The Indian Dental Academy is the Leader in continuing dental education , training dentists in all aspects of dentistry and offering a wide range of dental certified courses in different formats.
Indian dental academy provides dental crown & Bridge,rotary endodontics,fixed orthodontics,
Dental implants courses.for details pls visit www.indiandentalacademy.com ,or call
00919248678078
The Indian Dental Academy is the Leader in continuing dental education , training dentists in all aspects of dentistry and offering a wide range of dental certified courses in different formats.
Indian dental academy provides dental crown & Bridge,rotary endodontics,fixed orthodontics,
Dental implants courses.for details pls visit www.indiandentalacademy.com ,or call
00919248678078
The Indian Dental Academy is the Leader in continuing dental education , training dentists in all aspects of dentistry and
offering a wide range of dental certified courses in different formats.for more details please visit
www.indiandentalacademy.com
Growth prediction /certified fixed orthodontic courses by Indian dental aca...Indian dental academy
The Indian Dental Academy is the Leader in continuing dental education , training dentists in all aspects of dentistry and offering a wide range of dental certified courses in different formats.
Indian dental academy provides dental crown & Bridge,rotary endodontics,fixed orthodontics,
Dental implants courses.for details pls visit www.indiandentalacademy.com ,or call
00919248678078
The Indian Dental Academy is the Leader in continuing dental education , training dentists in all aspects of dentistry and
offering a wide range of dental certified courses in different formats.for more details please visit
www.indiandentalacademy.com
Growth prediction 2 /certified fixed orthodontic courses by Indian dental a...Indian dental academy
The Indian Dental Academy is the Leader in continuing dental education , training dentists in all aspects of dentistry and offering a wide range of dental certified courses in different formats.
Indian dental academy provides dental crown & Bridge,rotary endodontics,fixed orthodontics,
Dental implants courses.for details pls visit www.indiandentalacademy.com ,or call
00919248678078
The Indian Dental Academy is the Leader in continuing dental education , training dentists in all aspects of dentistry and
offering a wide range of dental certified courses in different formats.for more details please visit
www.indiandentalacademy.com
Growth prediction1 /certified fixed orthodontic courses by Indian dental ac...Indian dental academy
The Indian Dental Academy is the Leader in continuing dental education , training dentists in all aspects of dentistry and offering a wide range of dental certified courses in different formats.
Indian dental academy provides dental crown & Bridge,rotary endodontics,fixed orthodontics,
Dental implants courses.for details pls visit www.indiandentalacademy.com ,or call
00919248678078
The Indian Dental Academy is the Leader in continuing dental education , training dentists in all aspects of dentistry and
offering a wide range of dental certified courses in different formats.for more details please visit
www.indiandentalacademy.com
The Indian Dental Academy is the Leader in continuing dental education , training dentists in all aspects of dentistry and offering a wide range of dental certified courses in different formats.
Indian dental academy provides dental crown & Bridge,rotary endodontics,fixed orthodontics,
Dental implants courses.for details pls visit www.indiandentalacademy.com ,or call
00919248678078
The Indian Dental Academy is the Leader in continuing dental education , training dentists in all aspects of dentistry and
offering a wide range of dental certified courses in different formats.for more details please visit
www.indiandentalacademy.com
Growth prediction /certified fixed orthodontic courses by Indian dental aca...Indian dental academy
The Indian Dental Academy is the Leader in continuing dental education , training dentists in all aspects of dentistry and offering a wide range of dental certified courses in different formats.
Indian dental academy provides dental crown & Bridge,rotary endodontics,fixed orthodontics,
Dental implants courses.for details pls visit www.indiandentalacademy.com ,or call
00919248678078
The Indian Dental Academy is the Leader in continuing dental education , training dentists in all aspects of dentistry and
offering a wide range of dental certified courses in different formats.for more details please visit
www.indiandentalacademy.com
Growth prediction 2 /certified fixed orthodontic courses by Indian dental a...Indian dental academy
The Indian Dental Academy is the Leader in continuing dental education , training dentists in all aspects of dentistry and offering a wide range of dental certified courses in different formats.
Indian dental academy provides dental crown & Bridge,rotary endodontics,fixed orthodontics,
Dental implants courses.for details pls visit www.indiandentalacademy.com ,or call
00919248678078
The Indian Dental Academy is the Leader in continuing dental education , training dentists in all aspects of dentistry and
offering a wide range of dental certified courses in different formats.for more details please visit
www.indiandentalacademy.com
Growth prediction1 /certified fixed orthodontic courses by Indian dental ac...Indian dental academy
The Indian Dental Academy is the Leader in continuing dental education , training dentists in all aspects of dentistry and offering a wide range of dental certified courses in different formats.
Indian dental academy provides dental crown & Bridge,rotary endodontics,fixed orthodontics,
Dental implants courses.for details pls visit www.indiandentalacademy.com ,or call
00919248678078
The Indian Dental Academy is the Leader in continuing dental education , training dentists in all aspects of dentistry and
offering a wide range of dental certified courses in different formats.for more details please visit
www.indiandentalacademy.com
The Indian Dental Academy is the Leader in continuing dental education , training dentists in all aspects of dentistry and
offering a wide range of dental certified courses in different formats.for more details please visit
www.indiandentalacademy.com
The Indian Dental Academy is the Leader in continuing dental education , training dentists in all aspects of dentistry and
offering a wide range of dental certified courses in different formats.for more details please visit
www.indiandentalacademy.com
Growth predictions /certified fixed orthodontic courses by Indian dental aca...Indian dental academy
The Indian Dental Academy is the Leader in continuing dental education , training dentists in all aspects of dentistry and offering a wide range of dental certified courses in different formats.
Indian dental academy provides dental crown & Bridge,rotary endodontics,fixed orthodontics,
Dental implants courses.for details pls visit www.indiandentalacademy.com ,or call
00919248678078
The Indian Dental Academy is the Leader in continuing dental education , training dentists in all aspects of dentistry and
offering a wide range of dental certified courses in different formats.for more details please visit
www.indiandentalacademy.com
The Indian Dental Academy is the Leader in continuing dental education , training dentists in all aspects of dentistry and
offering a wide range of dental certified courses in different formats.for more details please visit
www.indiandentalacademy.com
The Indian Dental Academy is the Leader in continuing dental education , training dentists in all aspects of dentistry and offering a wide range of dental certified courses in different formats.
Indian dental academy provides dental crown & Bridge,rotary endodontics,fixed orthodontics,
Dental implants courses.for details pls visit www.indiandentalacademy.com ,or call
00919248678078
The Indian Dental Academy is the Leader in continuing dental education , training dentists in all aspects of dentistry and
offering a wide range of dental certified courses in different formats.for more details please visit
www.indiandentalacademy.com
This document discusses various methods for predicting facial growth, including longitudinal, metric, and structural approaches proposed by Bjork. It also describes logarithmic spirals and Moss's theory that foramina in the mandible fit onto a logarithmic spiral curve. Moss found the foramen ovale was located farther down the spiral in open bite patients, aiding in early diagnosis, while deep bite patients had the foramen ovale cluster relatively higher up. However, growth prediction methods have significant limitations and are not highly accurate for clinical use.
skeletal growth prediction and Age estimation Aditi Singh
This document discusses several methods for predicting skeletal growth and estimating age, including:
1. Rickett's method of constructing a growth arc to predict mandibular growth increments over time.
2. Rickett's cephalometric prediction method which estimates changes in cranial base angle and condylar position to influence chin position.
3. A 6-step procedure is described for using Rickett's cephalometric method to estimate growth for a Class II patient, including projecting changes in cranial base, determining condylar behavior, and constructing the mandible.
4. Limitations are noted for the arcial growth prediction method in relying on tracings and using chronological rather than skeletal age.
This document provides an overview of various methods that have been used for predicting facial growth and development in orthodontics. It discusses early concepts like Hunterian growth theory and Bjork's implant studies showing rotational growth. Methods like Moss' logarithmic spiral concept and Ricketts' arcial growth pattern are explained. Growth prediction grids like Moorrees mesh and Johnston's grid are summarized. The document also mentions Todd's equation for predicting non-linear radial growth and Holdaway's concept of a visualized treatment objective to forecast normal growth and treatment effects.
The Indian Dental Academy is the Leader in continuing dental education , training dentists in all aspects of dentistry and
offering a wide range of dental certified courses in different formats.for more details please visit
www.indiandentalacademy.com
This document discusses various methods for predicting facial growth, including cephalometric methods like Moorrees mesh, Johnston's transformation grid, and Rickett's arcial growth prediction of the mandible. Non-cephalometric methods discussed include logarithmic spiral, Hirschfield and Moyers, and Todd's equation. The need for growth prediction in orthodontic treatment planning and challenges with accuracy are also addressed. The conclusion is that while various methods have been proposed, growth prediction is most reasonable for "average growers" but not "abnormal growers," and an orthodontist's experience is an important additional factor.
The Indian Dental Academy is the Leader in continuing dental education , training dentists in all
aspects of dentistry and
offering a wide range of dental certified courses in different formats.for more details please visit
www.indiandentalacademy.com
The document discusses various methods for predicting craniofacial growth, including the Hunterian concept, gnomic growth and logarithmic spiral, arcial growth, Moorrees mesh, Johnston's grid, Todd's equation, and visual treatment objectives. It describes how each method uses cephalometric landmarks and averages to forecast future growth and tooth eruption. The goal of growth prediction is to help orthodontists intercept and correct malocclusions and plan treatment duration.
This document discusses various methods of assessing skeletal maturity from radiographs, which is important for orthodontic treatment planning. It describes five main methods: 1) Greulich & Pyle atlas method comparing hand-wrist radiographs to standard images 2) Bjork, Grave & Brown method assessing nine stages of ossification in the hand and wrist 3) Fishman's Skeletal Maturity Indicators using four stages and six anatomical sites 4) Hassel and Farman method evaluating six stages of cervical vertebrae development 5) Assessment of tooth mineralization stages on panoramic radiographs. Evaluating a patient's skeletal maturity is crucial for determining prognosis, treatment goals and timing of growth modification therapies.
Growth prediction2 /certified fixed orthodontic courses by Indian dental aca...Indian dental academy
- The document discusses various methods for predicting craniofacial growth, including the Johnston forecast grid, average increments from sella-nasion, Ricketts' short-range prediction method, and a computer-based RMDS program.
- A study evaluated the accuracy of these four methods and found the RMDS computer program to be the most accurate, being 21% more accurate than Ricketts' method and 56% more accurate than the Johnston grid.
- The study also found Ricketts' long-range prediction method showed statistically significantly higher correlations between predicted and actual measurements for various craniofacial parameters in girls compared to boys in a sample of Turkish children.
This document provides an overview of principles of facial growth and development, with a focus on mandibular growth rotations. It discusses key concepts such as the amount and timing of growth, assessment of growth, growth of the mandible, and mechanisms of mandibular rotation. Several studies on mandibular growth rotations are summarized, including the seminal work by Bjork in the 1950s using metal implants to track growth sites and directions. Bjork identified seven structural signs that can indicate the direction of mandibular growth. The document also briefly discusses the work of Bjork and Skieller, Proffit, Schudy, and Isaacson related to mandibular growth rotations.
Dynamics of growth /certified fixed orthodontic courses by Indian dental acad...Indian dental academy
The Indian Dental Academy is the Leader in continuing dental education , training dentists in all aspects of dentistry and offering a wide range of dental certified courses in different formats.
Indian Dental Academy: will be one of the most relevant and exciting training center with best faculty and flexible training programs for dental professionals who wish to advance in their dental practice,Offers certified courses in Dental implants,Orthodontics,Endodontics,Cosmetic Dentistry, Prosthetic Dentistry, Periodontics and General Dentistry.
The Indian Dental Academy is the Leader in continuing dental education , training dentists in all aspects of dentistry and
offering a wide range of dental certified courses in different formats.for more details please visit
www.indiandentalacademy.com
The document discusses various methods for predicting facial growth, including Johnston's grid method, Bjork's structural method, and Fishman's maturational method. It compares the accuracy of short-term and long-term predictions between these methods. While growth prediction remains difficult due to variability, the maturationally oriented Fishman method was found to be generally superior to chronologically based methods like Johnston's grid and Ricketts analysis. No single method can accurately predict growth for all individuals, especially those with extreme growth patterns.
The Indian Dental Academy is the Leader in continuing dental education , training dentists in all aspects of dentistry and
offering a wide range of dental certified courses in different formats.for more details please visit
www.indiandentalacademy.com
The Indian Dental Academy is the Leader in continuing dental education , training dentists in all aspects of dentistry and
offering a wide range of dental certified courses in different formats.for more details please visit
www.indiandentalacademy.com
Growth predictions /certified fixed orthodontic courses by Indian dental aca...Indian dental academy
The Indian Dental Academy is the Leader in continuing dental education , training dentists in all aspects of dentistry and offering a wide range of dental certified courses in different formats.
Indian dental academy provides dental crown & Bridge,rotary endodontics,fixed orthodontics,
Dental implants courses.for details pls visit www.indiandentalacademy.com ,or call
00919248678078
The Indian Dental Academy is the Leader in continuing dental education , training dentists in all aspects of dentistry and
offering a wide range of dental certified courses in different formats.for more details please visit
www.indiandentalacademy.com
The Indian Dental Academy is the Leader in continuing dental education , training dentists in all aspects of dentistry and
offering a wide range of dental certified courses in different formats.for more details please visit
www.indiandentalacademy.com
The Indian Dental Academy is the Leader in continuing dental education , training dentists in all aspects of dentistry and offering a wide range of dental certified courses in different formats.
Indian dental academy provides dental crown & Bridge,rotary endodontics,fixed orthodontics,
Dental implants courses.for details pls visit www.indiandentalacademy.com ,or call
00919248678078
The Indian Dental Academy is the Leader in continuing dental education , training dentists in all aspects of dentistry and
offering a wide range of dental certified courses in different formats.for more details please visit
www.indiandentalacademy.com
This document discusses various methods for predicting facial growth, including longitudinal, metric, and structural approaches proposed by Bjork. It also describes logarithmic spirals and Moss's theory that foramina in the mandible fit onto a logarithmic spiral curve. Moss found the foramen ovale was located farther down the spiral in open bite patients, aiding in early diagnosis, while deep bite patients had the foramen ovale cluster relatively higher up. However, growth prediction methods have significant limitations and are not highly accurate for clinical use.
skeletal growth prediction and Age estimation Aditi Singh
This document discusses several methods for predicting skeletal growth and estimating age, including:
1. Rickett's method of constructing a growth arc to predict mandibular growth increments over time.
2. Rickett's cephalometric prediction method which estimates changes in cranial base angle and condylar position to influence chin position.
3. A 6-step procedure is described for using Rickett's cephalometric method to estimate growth for a Class II patient, including projecting changes in cranial base, determining condylar behavior, and constructing the mandible.
4. Limitations are noted for the arcial growth prediction method in relying on tracings and using chronological rather than skeletal age.
This document provides an overview of various methods that have been used for predicting facial growth and development in orthodontics. It discusses early concepts like Hunterian growth theory and Bjork's implant studies showing rotational growth. Methods like Moss' logarithmic spiral concept and Ricketts' arcial growth pattern are explained. Growth prediction grids like Moorrees mesh and Johnston's grid are summarized. The document also mentions Todd's equation for predicting non-linear radial growth and Holdaway's concept of a visualized treatment objective to forecast normal growth and treatment effects.
The Indian Dental Academy is the Leader in continuing dental education , training dentists in all aspects of dentistry and
offering a wide range of dental certified courses in different formats.for more details please visit
www.indiandentalacademy.com
This document discusses various methods for predicting facial growth, including cephalometric methods like Moorrees mesh, Johnston's transformation grid, and Rickett's arcial growth prediction of the mandible. Non-cephalometric methods discussed include logarithmic spiral, Hirschfield and Moyers, and Todd's equation. The need for growth prediction in orthodontic treatment planning and challenges with accuracy are also addressed. The conclusion is that while various methods have been proposed, growth prediction is most reasonable for "average growers" but not "abnormal growers," and an orthodontist's experience is an important additional factor.
The Indian Dental Academy is the Leader in continuing dental education , training dentists in all
aspects of dentistry and
offering a wide range of dental certified courses in different formats.for more details please visit
www.indiandentalacademy.com
The document discusses various methods for predicting craniofacial growth, including the Hunterian concept, gnomic growth and logarithmic spiral, arcial growth, Moorrees mesh, Johnston's grid, Todd's equation, and visual treatment objectives. It describes how each method uses cephalometric landmarks and averages to forecast future growth and tooth eruption. The goal of growth prediction is to help orthodontists intercept and correct malocclusions and plan treatment duration.
This document discusses various methods of assessing skeletal maturity from radiographs, which is important for orthodontic treatment planning. It describes five main methods: 1) Greulich & Pyle atlas method comparing hand-wrist radiographs to standard images 2) Bjork, Grave & Brown method assessing nine stages of ossification in the hand and wrist 3) Fishman's Skeletal Maturity Indicators using four stages and six anatomical sites 4) Hassel and Farman method evaluating six stages of cervical vertebrae development 5) Assessment of tooth mineralization stages on panoramic radiographs. Evaluating a patient's skeletal maturity is crucial for determining prognosis, treatment goals and timing of growth modification therapies.
Growth prediction2 /certified fixed orthodontic courses by Indian dental aca...Indian dental academy
- The document discusses various methods for predicting craniofacial growth, including the Johnston forecast grid, average increments from sella-nasion, Ricketts' short-range prediction method, and a computer-based RMDS program.
- A study evaluated the accuracy of these four methods and found the RMDS computer program to be the most accurate, being 21% more accurate than Ricketts' method and 56% more accurate than the Johnston grid.
- The study also found Ricketts' long-range prediction method showed statistically significantly higher correlations between predicted and actual measurements for various craniofacial parameters in girls compared to boys in a sample of Turkish children.
This document provides an overview of principles of facial growth and development, with a focus on mandibular growth rotations. It discusses key concepts such as the amount and timing of growth, assessment of growth, growth of the mandible, and mechanisms of mandibular rotation. Several studies on mandibular growth rotations are summarized, including the seminal work by Bjork in the 1950s using metal implants to track growth sites and directions. Bjork identified seven structural signs that can indicate the direction of mandibular growth. The document also briefly discusses the work of Bjork and Skieller, Proffit, Schudy, and Isaacson related to mandibular growth rotations.
Dynamics of growth /certified fixed orthodontic courses by Indian dental acad...Indian dental academy
The Indian Dental Academy is the Leader in continuing dental education , training dentists in all aspects of dentistry and offering a wide range of dental certified courses in different formats.
Indian Dental Academy: will be one of the most relevant and exciting training center with best faculty and flexible training programs for dental professionals who wish to advance in their dental practice,Offers certified courses in Dental implants,Orthodontics,Endodontics,Cosmetic Dentistry, Prosthetic Dentistry, Periodontics and General Dentistry.
The Indian Dental Academy is the Leader in continuing dental education , training dentists in all aspects of dentistry and
offering a wide range of dental certified courses in different formats.for more details please visit
www.indiandentalacademy.com
The document discusses various methods for predicting facial growth, including Johnston's grid method, Bjork's structural method, and Fishman's maturational method. It compares the accuracy of short-term and long-term predictions between these methods. While growth prediction remains difficult due to variability, the maturationally oriented Fishman method was found to be generally superior to chronologically based methods like Johnston's grid and Ricketts analysis. No single method can accurately predict growth for all individuals, especially those with extreme growth patterns.
Growyh prediction/certified fixed orthodontic courses by Indian dental academyIndian dental academy
This document discusses various methods for predicting facial growth, including longitudinal, metric, and structural approaches. It describes Moss's theories of functional matrix and gnomonic facial growth, and how they relate to logarithmic growth models of the mandible and nasal cavity. Limitations of early prediction methods are noted, including lack of consistency in longitudinal patterns and low correlation coefficients for metric methods. Later approaches using Cartesian coordinates and mesh diagrams as well as computerized methods are presented as more sophisticated techniques for the ongoing challenge of facial growth prediction.
The Indian Dental Academy is the Leader in continuing dental education , training dentists in all aspects of dentistry and offering a wide range of dental certified courses in different formats.
Indian dental academy provides dental crown & Bridge,rotary endodontics,fixed orthodontics,
Dental implants courses.for details pls visit www.indiandentalacademy.com ,or call
00919248678078
This document discusses various methods for predicting craniofacial growth. It begins by explaining that growth prediction can help orthodontists plan treatment and understand how a patient's malocclusion may change as they grow. It then reviews several common cephalometric methods for growth prediction, including Moss's logarithmic spiral method and Ricketts's arcial growth model. The document provides detailed descriptions of the landmarks and principles underlying these two influential cephalometric methods. Overall, the summary aims to introduce the topic of growth prediction and highlight two important cephalometric approaches.
Growth prediction methods aim to forecast facial bone growth to aid orthodontic treatment planning. Common methods include regression analyses of past growth data, experimental models based on a clinician's experience, and theoretical approaches. Accuracy is limited as growth varies individually. Cephalometric techniques like Moorrees mesh, Johnston's grid, and Ricketts' arcial analysis overlay growth increments on radiographs but have disadvantages like complexity and population-specific constants. Newer methods like C-axis and G-axis vectors attempt to quantify maxillary and mandibular growth respectively. Finite element modeling also uses mathematical tensors to simulate craniofacial growth. Overall, growth prediction provides guidance for treatment but cannot replace clinical judgment of an individual patient's growth potential
The Indian Dental Academy is the Leader in continuing dental education , training dentists in all aspects of dentistry and
offering a wide range of dental certified courses in different formats.for more details please visit
www.indiandentalacademy.com
Growth prediction3/certified fixed orthodontic courses by Indian dental academyIndian dental academy
The Indian Dental Academy is the Leader in continuing dental education , training dentists in all aspects of dentistry and offering a wide range of dental certified courses in different formats.
Indian dental academy provides dental crown & Bridge,rotary endodontics,fixed orthodontics,
Dental implants courses.for details pls visit www.indiandentalacademy.com ,or call
0091-9248678078
Growth assessment /certified fixed orthodontic courses by Indian dental acad...Indian dental academy
The Indian Dental Academy is the Leader in continuing dental education , training dentists in all aspects of dentistry and offering a wide range of dental certified courses in different formats.
Indian dental academy provides dental crown & Bridge,rotary endodontics,fixed orthodontics,
Dental implants courses.for details pls visit www.indiandentalacademy.com ,or call
00919248678078
Growth & development /certified fixed orthodontic courses by Indian dental a...Indian dental academy
The Indian Dental Academy is the Leader in continuing dental education , training dentists in all aspects of dentistry and offering a wide range of dental certified courses in different formats.
Indian dental academy provides dental crown & Bridge,rotary endodontics,fixed orthodontics,
Dental implants courses.for details pls visit www.indiandentalacademy.com ,or call
00919248678078
Vertical jaw relations /certified fixed orthodontic courses by Indian dental...Indian dental academy
The Indian Dental Academy is the Leader in continuing dental education , training dentists in all aspects of dentistry and offering a wide range of dental certified courses in different formats.
Indian dental academy provides dental crown & Bridge,rotary endodontics,fixed orthodontics,
Dental implants courses.for details pls visit www.indiandentalacademy.com ,or call
0091-9248678078
Vertical jaw relations /certified fixed orthodontic courses by Indian dental ...Indian dental academy
The Indian Dental Academy is the Leader in continuing dental education , training dentists in all aspects of dentistry and offering a wide range of dental certified courses in different formats.
Indian dental academy provides dental crown & Bridge,rotary endodontics,fixed orthodontics,
Dental implants courses.for details pls visit www.indiandentalacademy.com ,or call
00919248678078
The Indian Dental Academy is the Leader in continuing dental education , training dentists in all aspects of dentistry and
offering a wide range of dental certified courses in different formats.for more details please visit
www.indiandentalacademy.com
The Indian Dental Academy is the Leader in continuing dental education , training dentists in all aspects of dentistry and
offering a wide range of dental certified courses in different formats.for more details please visit
www.indiandentalacademy.com
The document discusses the concept of mandibular growth rotation as introduced by Bjork in 1955. Bjork used metallic implants in the jaws of children to track changes in growth direction and intensity. He identified that the mandible undergoes both forward and backward rotations during development due to remodeling processes. Several researchers since, including Schudy, Enlow, Bjork and Skieller, further explored the mechanisms and patterns of mandibular rotation. Rotations can occur at the matrix, total, and intramatrix levels. In general, rotations are caused by an interplay between vertical and horizontal growth at the condyle and jaw.
The Indian Dental Academy is the Leader in continuing dental education , training dentists in all aspects of dentistry and
offering a wide range of dental certified courses in different formats.for more details please visit
www.indiandentalacademy.com
Clinical implications of growth and development /certified fixed orthodontic ...Indian dental academy
The Indian Dental Academy is the Leader in continuing dental education , training dentists in all aspects of dentistry and offering a wide range of dental certified courses in different formats.
Indian dental academy provides dental crown & Bridge,rotary endodontics,fixed orthodontics,
Dental implants courses.for details pls visit www.indiandentalacademy.com ,or call
0091-9248678078
Clinical examination of an orthodontic case /certified fixed orthodontic cour...Indian dental academy
The Indian Dental Academy is the Leader in continuing dental education , training dentists in all aspects of dentistry and offering a wide range of dental certified courses in different formats.
Indian dental academy provides dental crown & Bridge,rotary endodontics,fixed orthodontics,
Dental implants courses.for details pls visit www.indiandentalacademy.com ,or call
0091-9248678078
The Indian Dental Academy is the Leader in continuing dental education , training dentists in all aspects of dentistry and
offering a wide range of dental certified courses in different formats.for more details please visit
www.indiandentalacademy.com
The Indian Dental Academy is the Leader in continuing dental education , training dentists in all aspects of dentistry and
offering a wide range of dental certified courses in different formats.for more details please visit
www.indiandentalacademy.com
Similar to Growth prediction /certified fixed orthodontic courses by Indian dental academy (20)
Opportunity for Dentists (BDS/MDS )to relocate to United kingdom -Register as a DENTAL HYGIENIST/ DENTAL THERAPIST without Board exams and after approval you can register in GDC as a DH/DT and start working as a DH/DT Immediately and get paid.
You can complete the whole process in 3-4 months.Salary range for DH/DT is around 2500-3500 Pounds per month.
Eligibility / requirements-
1. An International English Language Testing System (IELTS) certificate
at the appropriate level.(Within 2 yrs of application date )
2: A recent primary dental qualification that has been taught and examined in English..(Within 2 yrs of application date )
3: A recent pass in a language test for registration with a regulatory authority in a country where the first language is English.
If you are interested Please contact us for more details.
1ST, 2ND AND 3RD ORDER BENDS IN STANDARD EDGEWISE APPLIANCE SYSTEM /Fixed ort...Indian dental academy
Indian Dental Academy: will be one of the most relevant and exciting training center with best faculty and flexible training programs for dental professionals
who wish to advance in their dental practice,Offers certified courses in Dental implants,Orthodontics,Endodontics,Cosmetic Dentistry, Prosthetic Dentistry,
Periodontics and General Dentistry.
Indian Dental Academy: will be one of the most relevant and exciting training center with best faculty and flexible training programs for dental professionals who wish to advance in their dental practice,Offers certified courses in Dental implants,Orthodontics,Endodontics,Cosmetic Dentistry, Prosthetic Dentistry, Periodontics and General Dentistry.
I –Aligners are made with FDA approved transparent thermoplastic materials using 3D scanning, 3D Printing and finally Trays with Pressure vacuum formers.
Dear Doctor,
Indian Dental Academy Now offers comprehensive online Orthodontics course.
Course includes:
1.whiteboard lecture presentations
2.Case Discussions
3.with hundreds of pictures.
4.Demo on Models
5.Demo on Patients
6. subtitles in your own language
12 months unlimited access and support @350 USD only.
For Demo please visit :www.idalectures.com/preview/
For more details visit: www.idalectures.com
Please contact us for any clarifications:
idalectures@gmail.com
indiandentalacademy@gmail.com
Thanks & Regards
Indian Dental Academy
--
Indian Dental Academy
Leader in continuing dental education
www.indiandentalacademy.com
skype:indiandentalacademy
+919248678078
The Indian Dental Academy is the Leader in continuing dental education , training dentists in all aspects of dentistry and
offering a wide range of dental certified courses in different formats.for more details please visit
www.indiandentalacademy.com
The Indian Dental Academy is the Leader in continuing dental education , training dentists in all aspects of dentistry and
offering a wide range of dental certified courses in different formats.for more details please visit
www.indiandentalacademy.com
Cytotoxicity of silicone materials used in maxillofacial prosthesis / dental ...Indian dental academy
The Indian Dental Academy is the Leader in continuing dental education , training dentists in all aspects of dentistry and
offering a wide range of dental certified courses in different formats.for more details please visit
www.indiandentalacademy.com
Diagnosis and treatment planning in completely endntulous arches/dental coursesIndian dental academy
The Indian Dental Academy is the Leader in continuing dental education , training dentists in all aspects of dentistry and
offering a wide range of dental certified courses in different formats.for more details please visit
www.indiandentalacademy.com
Properties of Denture base materials /rotary endodontic coursesIndian dental academy
The Indian Dental Academy is the Leader in continuing dental education , training dentists in all aspects of dentistry and
offering a wide range of dental certified courses in different formats.for more details please visit
www.indiandentalacademy.com
Use of modified tooth forms in complete denture occlusion / dental implant...Indian dental academy
This document discusses dental occlusion concepts and philosophies for complete dentures. It introduces key terms like physiologic occlusion and defines different occlusion schemes like balanced articulation and monoplane articulation. The document discusses advantages and disadvantages of using anatomic versus non-anatomic teeth for complete dentures. It also outlines requirements for maintaining denture stability, such as balanced occlusal contacts and control of horizontal forces. The goal of occlusion for complete dentures is to re-establish the homeostasis of the masticatory system disrupted by edentulism.
The Indian Dental Academy is the Leader in continuing dental education , training dentists in all aspects of dentistry and
offering a wide range of dental certified courses in different formats.for more details please visit
www.indiandentalacademy.com
The Indian Dental Academy is the Leader in continuing dental education , training dentists in all aspects of dentistry and
offering a wide range of dental certified courses in different formats.for more details please visit
www.indiandentalacademy.com
This document discusses dental casting investment materials. It describes the three main types of investments - gypsum bonded, phosphate bonded, and ethyl silicate bonded investments. For gypsum bonded investments specifically, it details their classification, composition including the roles of gypsum, silica, and modifiers, setting time, normal and hygroscopic setting expansion, and thermal expansion. It provides information on how the properties of gypsum bonded investments are affected by their composition. The document serves as a comprehensive overview of dental casting investment materials.
The Indian Dental Academy is the Leader in continuing dental education , training dentists in all aspects of dentistry and
offering a wide range of dental certified courses in different formats.for more details please visit
www.indiandentalacademy.com
The Indian Dental Academy is the Leader in continuing dental education , training dentists in all aspects of dentistry and
offering a wide range of dental certified courses in different formats.for more details please visit
www.indiandentalacademy.com
The Indian Dental Academy is the Leader in continuing dental education , training dentists in all aspects of dentistry and
offering a wide range of dental certified courses in different formats.for more details please visit
www.indiandentalacademy.com
The Indian Dental Academy is the Leader in continuing dental education , training dentists in all aspects of dentistry and
offering a wide range of dental certified courses in different formats.for more details please visit
www.indiandentalacademy.com
The Indian Dental Academy is the Leader in continuing dental education , training dentists in all aspects of dentistry and
offering a wide range of dental certified courses in different formats.for more details please visit
www.indiandentalacademy.com
हिंदी वर्णमाला पीपीटी, hindi alphabet PPT presentation, hindi varnamala PPT, Hindi Varnamala pdf, हिंदी स्वर, हिंदी व्यंजन, sikhiye hindi varnmala, dr. mulla adam ali, hindi language and literature, hindi alphabet with drawing, hindi alphabet pdf, hindi varnamala for childrens, hindi language, hindi varnamala practice for kids, https://www.drmullaadamali.com
ISO/IEC 27001, ISO/IEC 42001, and GDPR: Best Practices for Implementation and...PECB
Denis is a dynamic and results-driven Chief Information Officer (CIO) with a distinguished career spanning information systems analysis and technical project management. With a proven track record of spearheading the design and delivery of cutting-edge Information Management solutions, he has consistently elevated business operations, streamlined reporting functions, and maximized process efficiency.
Certified as an ISO/IEC 27001: Information Security Management Systems (ISMS) Lead Implementer, Data Protection Officer, and Cyber Risks Analyst, Denis brings a heightened focus on data security, privacy, and cyber resilience to every endeavor.
His expertise extends across a diverse spectrum of reporting, database, and web development applications, underpinned by an exceptional grasp of data storage and virtualization technologies. His proficiency in application testing, database administration, and data cleansing ensures seamless execution of complex projects.
What sets Denis apart is his comprehensive understanding of Business and Systems Analysis technologies, honed through involvement in all phases of the Software Development Lifecycle (SDLC). From meticulous requirements gathering to precise analysis, innovative design, rigorous development, thorough testing, and successful implementation, he has consistently delivered exceptional results.
Throughout his career, he has taken on multifaceted roles, from leading technical project management teams to owning solutions that drive operational excellence. His conscientious and proactive approach is unwavering, whether he is working independently or collaboratively within a team. His ability to connect with colleagues on a personal level underscores his commitment to fostering a harmonious and productive workplace environment.
Date: May 29, 2024
Tags: Information Security, ISO/IEC 27001, ISO/IEC 42001, Artificial Intelligence, GDPR
-------------------------------------------------------------------------------
Find out more about ISO training and certification services
Training: ISO/IEC 27001 Information Security Management System - EN | PECB
ISO/IEC 42001 Artificial Intelligence Management System - EN | PECB
General Data Protection Regulation (GDPR) - Training Courses - EN | PECB
Webinars: https://pecb.com/webinars
Article: https://pecb.com/article
-------------------------------------------------------------------------------
For more information about PECB:
Website: https://pecb.com/
LinkedIn: https://www.linkedin.com/company/pecb/
Facebook: https://www.facebook.com/PECBInternational/
Slideshare: http://www.slideshare.net/PECBCERTIFICATION
A workshop hosted by the South African Journal of Science aimed at postgraduate students and early career researchers with little or no experience in writing and publishing journal articles.
This slide is special for master students (MIBS & MIFB) in UUM. Also useful for readers who are interested in the topic of contemporary Islamic banking.
Main Java[All of the Base Concepts}.docxadhitya5119
This is part 1 of my Java Learning Journey. This Contains Custom methods, classes, constructors, packages, multithreading , try- catch block, finally block and more.
The simplified electron and muon model, Oscillating Spacetime: The Foundation...RitikBhardwaj56
Discover the Simplified Electron and Muon Model: A New Wave-Based Approach to Understanding Particles delves into a groundbreaking theory that presents electrons and muons as rotating soliton waves within oscillating spacetime. Geared towards students, researchers, and science buffs, this book breaks down complex ideas into simple explanations. It covers topics such as electron waves, temporal dynamics, and the implications of this model on particle physics. With clear illustrations and easy-to-follow explanations, readers will gain a new outlook on the universe's fundamental nature.
How to Add Chatter in the odoo 17 ERP ModuleCeline George
In Odoo, the chatter is like a chat tool that helps you work together on records. You can leave notes and track things, making it easier to talk with your team and partners. Inside chatter, all communication history, activity, and changes will be displayed.
How to Manage Your Lost Opportunities in Odoo 17 CRMCeline George
Odoo 17 CRM allows us to track why we lose sales opportunities with "Lost Reasons." This helps analyze our sales process and identify areas for improvement. Here's how to configure lost reasons in Odoo 17 CRM
This presentation was provided by Steph Pollock of The American Psychological Association’s Journals Program, and Damita Snow, of The American Society of Civil Engineers (ASCE), for the initial session of NISO's 2024 Training Series "DEIA in the Scholarly Landscape." Session One: 'Setting Expectations: a DEIA Primer,' was held June 6, 2024.
How to Fix the Import Error in the Odoo 17Celine George
An import error occurs when a program fails to import a module or library, disrupting its execution. In languages like Python, this issue arises when the specified module cannot be found or accessed, hindering the program's functionality. Resolving import errors is crucial for maintaining smooth software operation and uninterrupted development processes.
A Strategic Approach: GenAI in EducationPeter Windle
Artificial Intelligence (AI) technologies such as Generative AI, Image Generators and Large Language Models have had a dramatic impact on teaching, learning and assessment over the past 18 months. The most immediate threat AI posed was to Academic Integrity with Higher Education Institutes (HEIs) focusing their efforts on combating the use of GenAI in assessment. Guidelines were developed for staff and students, policies put in place too. Innovative educators have forged paths in the use of Generative AI for teaching, learning and assessments leading to pockets of transformation springing up across HEIs, often with little or no top-down guidance, support or direction.
This Gasta posits a strategic approach to integrating AI into HEIs to prepare staff, students and the curriculum for an evolving world and workplace. We will highlight the advantages of working with these technologies beyond the realm of teaching, learning and assessment by considering prompt engineering skills, industry impact, curriculum changes, and the need for staff upskilling. In contrast, not engaging strategically with Generative AI poses risks, including falling behind peers, missed opportunities and failing to ensure our graduates remain employable. The rapid evolution of AI technologies necessitates a proactive and strategic approach if we are to remain relevant.
Thinking of getting a dog? Be aware that breeds like Pit Bulls, Rottweilers, and German Shepherds can be loyal and dangerous. Proper training and socialization are crucial to preventing aggressive behaviors. Ensure safety by understanding their needs and always supervising interactions. Stay safe, and enjoy your furry friends!
Exploiting Artificial Intelligence for Empowering Researchers and Faculty, In...Dr. Vinod Kumar Kanvaria
Exploiting Artificial Intelligence for Empowering Researchers and Faculty,
International FDP on Fundamentals of Research in Social Sciences
at Integral University, Lucknow, 06.06.2024
By Dr. Vinod Kumar Kanvaria
5. Introduction
It
is not possible to predict how a patient is
going to respond to a particular treatment.
Variability is expected
www.indiandentalacademy.com
7. In the absence of growth, treatment
responses are reasonably predictable
GROWTH IS NOT…….
www.indiandentalacademy.com
8. The
goal of growth prediction is to reduce
the clinician’s ignorance of the future…
www.indiandentalacademy.com
9. What are we interested in predicting in
the craniofacial complex?
1. Future size of a part -The prediction of
future size is primarily a problem of predicting
future increments which are to be added to a
size that is already known.
Eg:
prediction of length of the mandible
www.indiandentalacademy.com
10. 2. Relationship of parts –
The most important prediction for the
clinician is the future relationship of parts,
that is the future facial pattern.
www.indiandentalacademy.com
11. Timing of growth events – Because growth
does not proceed evenly, certain facial dimensions
demonstrate marked change in their velocity
curves. These spurts make predictions much more
difficult.
3.
If one were to predict a “spurt”, we might want to
predict the a) time of onset. b) duration of
increased rate of growth c) rate of growth during
the spurt.
www.indiandentalacademy.com
12. 4.
Vectors of growth- Most predictive method
presume a continuation of the pattern first
seen.The presumption is made that the vectors
of the growth present at the time of prediction
will remain.
However this is not true…..
Mandible which grow vertically for a
period of time can start to grow
horizontally!!!
Can such changes in growth direction be
predicted???
www.indiandentalacademy.com
13. 5. Velocity of growth- It would be of use to know the
future expected rate of growth especially during pubescent
spurt.
6.Effect of orthodontic therapy on any of the
above predicted parameters
What effect therapy is having on the predicted and
actual growth of one specific face
www.indiandentalacademy.com
14. How
well can we predict these
parameters???
Future
Size
Complex craniofacial growth
Any simple series of size prediction is not
clinically useful.
www.indiandentalacademy.com
15. Relationship
of parts
Harvold, Johnston, Ballach –
predicted maxillo mandibular relationship.
None were accurate…
Timing
and growth events
Hunter
& Miller reported the shape of the face as
roughly related to the timing of the pubuscent
spurt.
Frisancho- predict the individual spurt in stature
from noting the time of calcification of the
sesamoid bone
www.indiandentalacademy.com
16. Vectors of growth
There is no means of anticipating change in the
direction of growth
Predicting vector is not same as predicting
changes in the vector….
Velocity
Not much attention is given to this
www.indiandentalacademy.com
17. The
effect of orthodontic therapy on
growth
Ricketts’ method- sets the prediction and
then works to make them come true
www.indiandentalacademy.com
18. Methods of prediction of
craniofacial growth
William J Hirschfeld AJO Vol 60 no 5
1971
Several predictive methods that are used
can be grouped as followsA) Theoretical B) Regression
C) Experiential D) Time Series
www.indiandentalacademy.com
19. 1.Theoretical methods of prediction-
A theoretical model is constructed mathematically,
and a test for hypothesis is devised.
Theoretical models of craniofacial growth have not
yet been defined mathematically in terms precise
enough to permit the application of the method to
prediction
www.indiandentalacademy.com
20. Regression methods- These methods serve to
calculate a value for one variable, called
dependent, on the basis of its initial state and
degree of its correlation with one or more
independent variables
However Johnston evaluated and revised this
method and concluded1.The ultimate accuracy of cephalometric prediction
may be limited by intrinsic error within the
cephalometric method itself.
2. These methods seem inadequate to provide an
efficient estimate of individual change attributable to
growth only.
2.
www.indiandentalacademy.com
21. 3. Experiential method- These methods are based
on the clinical experience of a single investigator
who attempts to quantify his observations of
practice in such a way that they can be modified for
use by others.
4. Time series methods- 2 types
A) Time series analysis- it extracts in a
mathematical form the fundamental nature of the
process as it relates to time.
B) Smoothing methods –it gives representative or
average values to the parameters of a previously
derived time series equation.
www.indiandentalacademy.com
22. Gnomic growth and logrithmic
spiral
What is gnomic growth?
The process where upon the addition to a body
leaves the resultant body similar to the original is
called gnomic growth.
D’Arcy Thompson classified the sea shells in
accordance to their pattern of enlargement and
developed an equation.
www.indiandentalacademy.com
23. The Nautilus offers 2 fundamental characterstics 1. The shell grows in size but does not change its
shape
new growth
2. Its gnomic growth can be described by a
particular kind of curve- the logarithmic or
equiangular spiral.
www.indiandentalacademy.com
24. The spiral is characterized by the movement of a
point away from the pole along the radius vector
with a velocity increasing as its distance from the
pole
www.indiandentalacademy.com
25. Logarithmic growth of human
mandible
There are several functional conditions which are
not violated during orofacial growth- one of these is
neural innervations which must never be subjected
to external loading.
Craniometric studies were performed on American
Indian skull .they are representative of mandible
with fetal, deciduous, mixed and adult dentition.
Small lead shots were fixed to foramen ovale.
Mandibular foramen.& foramen mental
www.indiandentalacademy.com
26. Lateral
x-rays effectively outlined the
pathway of the Inf. Alveolar nerve.
All the 3 neural foramina at all ages fit
precisely upon a single mathematically
defined, logarithmic spiral.
www.indiandentalacademy.com
27. Another
longitudinal and cross sectional clinical
growth data showed that these foramina moved
along the same logarithmic spiral in geometric
fashion, with the gradient of motion directly
increasing with the distance of the foramina from
the cranial base. ie mental foramen moves most
and the foramen ovale least.
www.indiandentalacademy.com
28. In the fetal period the 3 foramina are relatively
near the origin of the spiral and at the same time
they are placed nearer to each other than at
later stage. This produces a flatter curvatre
hence gonial angle is relatively flat
With growth due to increase in distance ramus
becomes straight relative to corpus and gonial
angle acute.
www.indiandentalacademy.com
29. During
all stages of development the corpus
stays in essentially a horizontal position. At the
same time the mandible curves down the
logarithmic spiral course of the inferior alveolar
nerve.
www.indiandentalacademy.com
30. Arcial growth
Ricketts
in 1972 developed a method to
determine the arc of growth of the mandible.
PRINCIPLE:
A normal human mandible grows by superior
anterior apposition at the ramus on a curve or
arc which is a segment formed from a circle. The
radius of this circle is determined by using the
distance from mental protrubence (Pm) to a
point at the forking of the stress lines at the
terminus of the oblique ridge on the medial side
of the ramus( point Eva)
www.indiandentalacademy.com
31.
Landmarks
Xi pointThe deepest point on the subcoronoid is selected as R1.
R2 is selected directly opposite to it on post border of
ramus.
R3 is selected at the depth of the sigmoid notch.
R4 is directly on the lower border of ramus.
The centroid of the rectangle formed is called Xi point.
www.indiandentalacademy.com
32.
Supra pogonion- It is a point located at the superior
aspect of symphysis.
It is labelled Pm
This is substantiated as a reference point because1. It is the site of a reversal line (Enlow)
2. Stable unchanging bone in this area of bone (Bjork).
Point Dc – It is a point at the bisection of condyle neck
www.indiandentalacademy.com
33. Point
Eva- it is a biologic point as it is located
over the point of forking of the stress line in the
ramus.
Ramus reference point (RR) is the point halfway
between Xi point and R3 on the anterior border
of ramus.
www.indiandentalacademy.com
34.
1
2
3
4
Construction of growth
arc:
Point RR and R3 are
connected.
Mid point of RR and R3 is pt
Eva
Take pt Eva –Pm as radiuscircle is drawn
1. taking eva as a centre
2. taking Pm as a centre.
The point of intersection is
TR (True radius) taking this
as a centre an arc is drawn.
Where this arc crosses
sigmoid notch is called
Murray point.
www.indiandentalacademy.com
35. Steps
in growth prediction
Step 1 amount of growth on arc- 2.5mm
From pt Mu the mandible is grown out on the arc at
the sigmoid notch about 2.5mm.
cutoff for males=19yrs
females= 14.5yrs
www.indiandentalacademy.com
36. Step 2
Coronoid –
upwards &outwards – 0.8mm/ yr
Condyle upward & backward - 0.2 mm / yr
Step 3 - Drift of gonial angle
Females- no addition
Males - 0.2 mm / yr
www.indiandentalacademy.com
37. Step
4 complete forcasting of the
mandibular form
Connections from coronoid process –RR –
0.4mm/yr
determine space available for 3rd molar
www.indiandentalacademy.com
38. By
constructing the growth arc, growing the
mandible on the arc, extending and drifting the
angular process, this forecasting technique is
tested.
www.indiandentalacademy.com
39. Drawbacks
of arcial growth prediction
1. It relies heavily on the operators skill in tracing
the cephalogram.
2. Mitchell & Jordan (1975) concluded Ricketts
uses chronological age rather than the skeletal
age. If the patient is in a growth spurt or lag phase
it will alter the result.
3. The growth increments constants are for a fixed
population.
www.indiandentalacademy.com
40. Ricketts cephalometric or short
term prediction
The changes in the face during treatment were
thought to be influenced by a phenomenon
within TMJ complex.
1. The changes in the angle of cranial base to a
more acute or obtuse relationship.
2. Forward or backward movement of the
condyle that influenced the chin behavior.
www.indiandentalacademy.com
41. Procedure for growth estimation
Class
II Div 1 case was selected to demonstrate
the procedure.
For growth estimation work, the cranial plane
basion-nasion (Ba-Na) plane is employed.
It can be studied in following steps:
STEP 1:
1. Projection of probable changes in the basi
cranium
It includes Points N, S, & Ba.
a.) Sella – starting point.
Average expectancy for increase along SN
www.indiandentalacademy.com
42.
pubertal spurt – 1mm / yr
Mixed dentition – 0.5 – 0.7 mm / yr.
b) Expected changes between sella & Basion
change in length is 3/4th of S-N.
c.) Establish Expected Ba-N
Connect the new S & N & Ba –formation of new
basicranium.
www.indiandentalacademy.com
43. STEP 2:
Predeterming the behaviour of condyle
Condyle position remained same in 60% of cases
Downward & forward movement of Ar & Ba –similar after the age of 6
Superimposing Ba- N and registering Ba will reveal the future
condylar position..
www.indiandentalacademy.com
44. STEP 3:
Ptm is outlined-evaluation of maxillary growth, coronoid pr.
Superimposing of SN and registering at S shows
Downward dropping of this fissure.
Tip of the coronoid process is located 3mm forward to ptm
at both start and completion of Treatment.
www.indiandentalacademy.com
45.
STEP 4:
Construction of condylar axis
From the centre of condyle to antegonial angle.
www.indiandentalacademy.com
46. STEP 5:
Contemplation of growth of condyle
Estimated on the condyle axis .
During Rx 2mm of growth / yr upto 9yrs
During puberty = 3 or 4 mm / yr may be expected
The assessment of condylar growth permits the construction of the
post. Border, gonial angle, sigmoid notch,& ant. Border of ramus.
www.indiandentalacademy.com
47.
STEP 6: assessment of remaining mandible
Rotation of mandibular plane untill the change agrees with the
estimate of change for that case
Forward direction of condyle – lower mandibular plane angle
Backward condylar growth - higher mandible plane angle .
STEP 7:
Lengthening of body of mandible
It is slightly greater than S-N plane
1.5 mm / yr
Changes in the symphysis are
plotted
www.indiandentalacademy.com
48.
STEP 8:
Facial plane and Y axis is constructed
Superimposition on the BA-N plane will indicate the direction of
growth of mandible.
www.indiandentalacademy.com
49. Position of Maxilla
Step1
Increase in face height( vertical changes)
Facial plane is superimposed & registered on N
40% above ANS
60% of TFH increase is due to the denture area ie below
ANS.
www.indiandentalacademy.com
50. Step
2 Horizontal position of maxilla
It is postulated from the tendency of S-Na to remain
constant to Ba-N
Pt A is dropped parallel with line NA
Great amt of bodily retraction- Pt. A will be moved back
as much as 3-5 degree.
www.indiandentalacademy.com
51. 3.
future facial convexity is determined by
predicted behavior of Pt. A
www.indiandentalacademy.com
52. 4.
Descent of the palate is forecast
Post nasal spine drops parallel to ptm
www.indiandentalacademy.com
53.
Soft tissue behavior
Nose – superimposing of the palatal bone and registering
on ANS
2mm of growth of nose
Profile outlined is then constructed to the area below nose.
www.indiandentalacademy.com
54. Upper Lip- severely protruding cases- 2-4 mm increase in
thickness
Moderate protrusion 1-2mm increase in thickness.
Lower lip- bisecting the overbite& overjet
change and drawing sup portion of the lower lip
at this level.
www.indiandentalacademy.com
55. This
constitutes the complete procedure
for estimating the changes that can be
expected in any given case prior to
treatment.
www.indiandentalacademy.com
56. Prediction of mandible growth
Rotations
Bjork 1969 gave 3 methods to predict growth.
1.Longitudnal – following the course of development
in annual x –ray
pattern of growth is not constant
2.Metric- prediction of the facial development on the
basis of facial morphology from a single x ray film.
www.indiandentalacademy.com
57. 3.Structural- based on the information concerning the
remodelling process of the mandible during growth
gained from implant studies.
Principle- to recognize specific structural feature that
develop as a result of remodelling in a paricular
type of mandibular rotation. A prediction of the
subsequent course is then made on assumption
that the trend will continue.
www.indiandentalacademy.com
58. Mandible
may be regarded as an unconstrained
bone.
The site of the center of rotation may be located at:
Anterior ends
Posterior ends
Between the ends
Thus center may not necessarily lie at TMJ
www.indiandentalacademy.com
59. Forward rotation may occur in 3 ways
Type I: Forward rotation centre in TMJ
It gives rise to deep bite resulting in under development of anterior
face height
Cause may be occlusal imbalance
powerful muscular pressure.
www.indiandentalacademy.com
60. TYPE 2: Rotation centre at the incisal edges
Marked Development of Post. Facial height + normal
increase in Ant. Facial height. The post part of mandible
rotates away from maxilla.
Increase in post facial height : lowering of middle cranial
fossa
increase height of ramus.
www.indiandentalacademy.com
61. Vertical direction of condylar growth
Mandilble is lowered more than it is carried forward
Muscle and ligamnetous attachment
lowering takes place as a forward rotation in relation to
maxilla
www.indiandentalacademy.com
62.
Type 3: centre at pre molar
In case of large maxillary overjet the center of rotation is displaced
backward in the arch.to the level of premolars
AFH – under developed
PFH - increases.
Dental arches are pressed into each other and basal deep bite
develops.
In Type II & III the mandibular symphysis swings forward to a
marked degree and the chin becomes prominent.
www.indiandentalacademy.com
63.
BACKWARD ROTATION OF THE MANDIBLE
2 types.
TYPE 1: centre of rotation in TMJ
Backward rotation of the mandible about a center in the
joints also occurs in connection with growth of the cranial
base.
In the case of flattening of the cranial base, the middle
cranial fossae are raised in relation to the anterior one,
and then the mandible is also raised.
There may be other causes also, such as an incomplete
development in height of the middle cranial fossae.
www.indiandentalacademy.com
64. This
underdevelopment of the posterior face
height leads to a backward rotation of the
mandible, with overdevelopment of the anterior
face height and possibly open-bite as a
consequence. The mandible is, in principle,
normal.
www.indiandentalacademy.com
65.
TYPE 2: Centre at distal occluding molars
. This occurs in connection with growth in the sagittal direction
at the mandibular condyles.
As the mandible grows in the direction of its length it is carried
forward more than it is lowered in the face, and because of its
attachment to muscles and ligaments it is rotated backward.
www.indiandentalacademy.com
66. The
symphysis is swung backward and the chin
is drawn back below the face. The soft tissues of
the chin may not follow this movement, and a
characteristic double chin can form.
Basal open-bite may develop,
Difficulty in closing the lips without tension.
Lower incisors, functionally related to the upper
incisors, become retroclined in the mandible
and
the alveolar prognathism is reduced
www.indiandentalacademy.com
67. BJORK & RUNE found a contrast between the positioning of
mandible in a longitudnal series when superimposed on
the cranial base and positioning contours resulting from
superimposition on metallic implants. They divided
rotations into 3 components.
1.
2.
3.
Matrix Rotation
Intramatrix rotation
Total rotation
www.indiandentalacademy.com
68. Matrix Rotation: centre in the condyle
Rotation of bone with its matrix or periosteal
capsule in its articulation with surrounding bone
www.indiandentalacademy.com
69.
INTRAMATRIX ROTATION : centre in corpus
Rotation of the mineralized corpus inside the matrix periosteum.
Periosteal cellular activity
rotation of the bony corpus
Surface of bone are remodeled in compensatory fashion
Matrix retains its stable inclination.
www.indiandentalacademy.com
70.
TOTAL ROTATION :
Combination of the 2 types
It is rotation of the mandibular corpus measured as a
change in the inclination of an implant line in the mandibular
corpus relative to anterior cranial base.
The position of center of rotation of total rotation is
dependent on the other 2 centers of rotation.
www.indiandentalacademy.com
71. Structural
method of growth prediction
STRUCTURAL SIGNS OF GROWTH ROTATION
7 structural signs of extreme growth rotation
The greater in number that are present, the more reliable the
prediction.
1) INCLINATION OF CONDYLE HEAD:
Forward or backward inclination
of the condylar head
May not be easy to identify
on the cephalograms.
www.indiandentalacademy.com
72.
2) CURVATURE OF MANDIBULAR CANAL:
Vertical condylar growth
– curvature of canal is more
Sagittal condylar growth
- straight mandibular canal
3) SHAPE OF THE LOWER BORDER OF MANDIBLE
Vertical condylar growth –
apposition below the symphysis
and anterior part of mandible
Sagittal growth –
ant rounding absent
thin cortical layer
jaw angle is convex
www.indiandentalacademy.com
73. 4. INCLINATION OF SYMPHYSIS
Vertical type –
symphysis swings forward
Sagittal type –
swings backward with receding chin.
5.Position of the lower incisor seems to be functionally related to the
upper incisors
Inter incisal angle undergoes a smaller change than the rotation of
the jaws.
www.indiandentalacademy.com
74.
6. INTERMOLAR & PREMOLAR ANGLE:
Forward growth rotation - mandibular post. More upright
increase in inter molar/ premolar angle
Backward rotation - mandibular molar and premolars inclined
forward
small inter molar / premolar angle.
www.indiandentalacademy.com
75.
7. LOWER ANT. FACIAL HEIGHT
Forward growth rotation- decrease in lower AFH
Backward rotation
- over development of AFH
www.indiandentalacademy.com
76. Thus,
from structural method for prediction
of rotation B’jork concluded:
Forward inclination of condyle- ant rotation
of the mandible
Backward inclination- post rotation of the
mandible.
www.indiandentalacademy.com
77. Drawbacks
There is no absolute correlation between structural growth
prediction and degree of growth rotation in cases showing
average changes.
The method should be primarily used to determine whether
any typical signs of ant. or post. Growth rotations are
present.
www.indiandentalacademy.com
78. Johnston method of growth
prediction
This
is a simple method based on the addition of
mean increment by direct superimposing on a
printed grid
In this regular angular changes in average
direction was shown ie each point advanced
1grid/yr using standard SN orientation registered
at S
www.indiandentalacademy.com
80. This
method by using the grid produces a
moderate flattening of the profile and occlusal
plane as well as a slight mesial drift of M.
This method do not fit a random series of
patients
It is not easy to evaluate the significance of the
forecasting error.
www.indiandentalacademy.com
81. Mesh analysis
Coenrad.
F.A moorrees et al
The mesh diagram is composed of a grid of
rectangular scaled on the pt’s upper facial height
and depth.
www.indiandentalacademy.com
82. The
face is inscribed in a coordinate system
consisting of 24 rectangles.
www.indiandentalacademy.com
83. The
length and height of mesh rectangle differs
among individuals.
The size increases from 8-16yrs.
Boys-4.5mm- ht
Girls- 3.5mm-ht
Length- 3.2mm in boys
Length 2.4mm in girls
Shape of mesh rectangle is determined by
shape of the core rectangle- represents the ratio
between face depth and upper facial height.
www.indiandentalacademy.com
84. In
the original proposal, the grid was
distorted to fit the proportionate location of
pt’s cephalometric landmark as compared
to the norm, thereby graphically
representing how the patient face deviated
from the norm.
Disadv- complex and laborious method
www.indiandentalacademy.com
85. Modification
– a norm is superimposed
on the pt’s grid in order to reveal
difference from a normalized mesh
diagram
Advantages graphically display pt’s deviation
Normal mesh diag is readily understood
by patient
www.indiandentalacademy.com
86. C- AXIS
M point- by Nanda & Meritt (AJO 1994)
It is a constructed point representing the
center of the largest circle that is tangent
to the superior, anterior & palatal surfaces
of maxilla as seen in the sagital plane .
www.indiandentalacademy.com
87. C-Axis:
The line from the sella (S) to M- point is
defined as C- axis.
www.indiandentalacademy.com
88. It
permits the quantification of a complex
maxillary growth process
Age group -7.4-18.75yrs
The regression formula is independent of gender
within the chronological age studied.
Upto age 14, both male and females showgrowth increment of 1.41mm &1.31mm/yr.
www.indiandentalacademy.com
89. The
mean growth axis angle (C-axis- SN)
Increased for both males and females.
Males = 3.98
Females = 2.25
www.indiandentalacademy.com
90. Palatal plane to C-Axis
Palatal
plane is geometrically related to C-axis.
Females= increases from 35.4 – 37.4
Males =increases from 39.3- 41.6
These changes tend to flatten the palatal plane.
www.indiandentalacademy.com
91. A
single M point cannot by itself
summarize the growth of dentomaxillary
complex in sagital plane.
However, when associated with the
palatal plane the downward & forward
migration is more accurately decsribed.
www.indiandentalacademy.com
92. Quantification
of the displacement of the
mandible???
Y axis !!!
What
about remodeling of external
symphyseal area….???
www.indiandentalacademy.com
93. G Axis
G –Axis : A growth vector for mandible
Stanley Braun et al , Angle orthodontist, Vol 74
No3 ,2004
G point : it is a point representing the centre of
largest circle that is tangent to the internal inf,
anterior, and post surfaces of the mandibular
symphyseal region as seen on lat
cephalograms.
www.indiandentalacademy.com
94. G point : it is a point representing the centre
of largest circle that is tangent to the
internal inf, anterior, and post surfaces of
the mandibular symphyseal region as
seen on lat cephalograms.
www.indiandentalacademy.com
95.
Length of this axis is determined by Sella & G- point.
Direction is determined by alpha angle
-Mean growth axis vector angle
Theta angle- Mandibular plane & G-axis.
- Mean mandibular plane angle
www.indiandentalacademy.com
96. Age
group- 6- 19.25yrs.
G-axis length
Females – 1.6mm/yr
Males – 2.3mm/yr
Mean
Growth vector angle
Females – decreases 0.02/yr
Males – increases 0.14/yr
Mean
mandibular plane angle
Females –increases by 0.4/yr
Males – increases by 0.3/yr
www.indiandentalacademy.com
97. Thus,
G-axis allow for the quantification of
the complex mandibular growth process in
cephalometric terms relative to various
craniofacial structure in the sagittal plane.
www.indiandentalacademy.com
98. VTO
It is completely practical as a treatment planning
procedure to approach the proposed orthodontic
changes from a soft tissue analysis perspective
Possible soft tissue profile is established--- compute the
tooth movements.
It can be done manually or cephalometric tracings.
Tracing represents the expected growth or any growth
changes induced during treatment.
This is especially noticeable when growth over a period
of 5yrs or longer was forecast
www.indiandentalacademy.com
99. Mathematical Model for prediction
of craniofacial growth
Presented
by James. T. Todd & Leonard Mark
The
model is derived from the basic
assumptions about the long range effects of
gravitational pressure on the remodelling of
bone and expressed formally on a single
geometric transformation.
www.indiandentalacademy.com
100. The
validity of the model is examined
empirically using data for 20 individuals
from the Denver Child research Council,
longitudnal growth study.
It
is based on the following hypothesis “The overall pattern of craniofacial
growth is primarily controlled by
biomechanical influences.” This is known
as Wolf ‘s law.
www.indiandentalacademy.com
101. The
wolf law’s states- The bone
elements place themselves in the
direction of functional pressure and
increase or decrease their mass to
reflect the amount of functional
pressure.
www.indiandentalacademy.com
103. Todd
& mark conclude that the mathematical
transformation was shown to make reasonably
accurate prediction over a span of 10-15 yrs.
REVISED
CARDIOIDAL STRAIN
R’ = R +bP
www.indiandentalacademy.com
104. Gravity influences the biomechanics of growth
which is exerted on every point with in the
craniofacial complex and it also provides a counter
force for the action of muscles.
www.indiandentalacademy.com
105. Heads
are not perfectly spherical
There are other sources of stress operating on
craniofacial complex besides the force gravity
The orientation of the head with respect to the
gravity does not remain fixed.
www.indiandentalacademy.com
106. The
predictions that were made were not
accurate because of mechanical errors
Oral habits
Nevertheless they very closely predict
the actual outcome of growth……
www.indiandentalacademy.com
107. FEM method of craniofacial
growth
Finite element modeling is able to provide
absolute quantitive description of cranial
skeletal size and shape change with local
growth significance, independent of any
external frame of references.
www.indiandentalacademy.com
108. Finite element fundamental attribute its ability
to dicretize or subdivide structures or bodies
into 2-3 dimensional elements by a series
of imaginary lines, called as finite element.
Each line is connected at one end to at least
one other line. The point of connection is
termed as nodes
www.indiandentalacademy.com
109. Growth
strains –
It is the measurable deformation of a
biologic body resulting from its growth.
The direction and quantification of growth tensor
can be computed and graphically displayed
Finer the discretization of the body , the more
closely the resulting numerical resulting
numerical result will approximate the reality of
growth behavior at each point.
www.indiandentalacademy.com
110. Growth
tensors define growth changes locally
independent of the body registration methods
The growth tensor describes the relative
displacement of all points in the neighborhood of
the given point.
It may be regarded as specifying transformation
of coordinates from one stage of growth to
another.
www.indiandentalacademy.com
111. Growth tensor and growth prediction
If growth process is prescribed by
-specifying growth tensors at every point of the
body,
-assuming the growth strains are compatible,
- initial shape of the body is given,
The fem is capable of predicting the shape of
the body at any subsequent stage during its
growth.
www.indiandentalacademy.com
112. Advantage
over roentgenographic
cephalometry
1. Growth prediction is independent of any
external frame of reference thus eliminating
the principal source of methodological error in
RCM
2. It describes growth locally
www.indiandentalacademy.com
113. Limitations
1.The errors of anatomic or material point
imaging, detection and representations.
2. This does not correspond closely to biologic
reality because tissues of different histologic
type and growth process are present,
including the air fluid.
www.indiandentalacademy.com
114. Parental data to predict growth
of craniofacial form
Akira Suzuki & Yashuhide Takahama
Am J Orthod Dentofac Orthop 1991;99 107-121
In a family study of craniofacial
dimension the most
striking feature is the high level of significant
correlation between parents and off springs and
between siblings especially when they are
contrasted with the co-relation of fathers to mothers
www.indiandentalacademy.com
115. Twin studies:
- genetic analysis of craniofacial morphology was of
prime concern
Family studies:
the statistically significant correlations between
parents and their children have been reported.
1) The cranio facial forms of children with a certain
degree of bone maturity were significantly co
rrelated with those of their parents
www.indiandentalacademy.com
116. 2) The genetic influence of parents on their children
appear to be equal
3)Coefficient of correlation of craniofacial forms
between children and their parents increased from
childhood to adulthood
4) The heritabilities of variables associated with
craniofacial form ranged from 0.5-0.9 except
respiratory and masticatory system.
www.indiandentalacademy.com
117. The following hypothesis formed the basis of
parental data to predict growth 1. The face of off spring often resemble that of at
least one of his parents
2. if the face of a young offspring resembles the
face of either parent, it will continue to resemble
that parent when the off spring becomes an adult .
3. if the cranio facial type of an off spring resembles
that of the father or of the mother in the early
growing stage , its adult craniofacial type will be
nearly like that of the same parent.
www.indiandentalacademy.com
119. There is a high correlation between the craniofacial form of
an off spring and that of his or her parents.
The relationship become closer with growth, so its better to
use the parental information than to use average growth
curves when the individual growth of a child is to be
determined.
www.indiandentalacademy.com
120. Computerized
growth predictions
Cephalometric software (quickceph image,
dentofacial planner) have replaced manual acetate
tracings with computer generated tracings derived from
digitized head film. During the process of digitization, the xy coordinates of cephalometrics landmarks are recorded
and stored in data set from which various cephalometric
measurements are made.
Growth and treatment response can be displayed and
measured by longitudnal superimposition of serial datasets
on stable cranial base or regional landmarks
www.indiandentalacademy.com
121. Rickett’s
technique- It is the most
widely used and the first technique that is
implemented in software.
It assigns mean increments of growth to a
series of landmarks along reference lines
determined by the use of growth
increments that are sensitive to the
skeletal age.
www.indiandentalacademy.com
122. Computerized
VTO-
The
manual method of prediction gives a
reasonable good graphic representation of
growth changes to create a VTO
Computer offers the added advantage
quicker access to information
greater accuracy in producing the tracing
useful in pt education
Software used are. Rocky Mountain Data
System, Quickceph II
www.indiandentalacademy.com
123. Computerized mesh analysis
It
is a quantitative assessment of the direction
and amount of deviation of each facial landmark
of the patient.
A modified 3 dimensional mesh analysis could
then be used to compare patients values to
reference soft tissue data collected on normal
standard.
www.indiandentalacademy.com
124. Construction of the reference
grid
Normal
reference have been constructed on the
basis of the data bank available at LAFAS, Milan
with the use of 3D facial morphometry, which
detects 3 dimensional coordinates.
The digitized landmarks described the head, the
face, the orbits, the nose lips&mouth. Mean
values were computed within genders.
A standard lattice of equidistant horizontal,
vertical,& A-P line was constructed comprising
84 parallelopipeds (28 frontal , 21 sagital 12
horizontal tracings)
www.indiandentalacademy.com
126. Comparison of the patient to the
norm.
3
dimensional coordinates of the facial
landmarks of each pt were obtained, oriented on
x-y-z axis & a grid is constructed.
Step 1. std normal reference is superimposed
on the patients tracings
Size
and shape difference is evaluated by
calculation of new relevant displacement vector
for each landmark
www.indiandentalacademy.com
127. Conclusion
has pointed out “ the knowledge
of prediction might best proceed by learning to
predict untreated growing faces.”
The clinician must always wonder what
effect his therapy is having on the patient
and actual growth of one specific face.
Burstone
www.indiandentalacademy.com
128. Research
work may develop mathematical
models, devise predictive procedures and
test them statistically but the practicing
orthodontist treating one child at a time
will prove the ultimate worth of any
suggested method….
www.indiandentalacademy.com