Computerised cephalometric systems /certified fixed orthodontic courses by Indian dental academy

2,484 views

Published on


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

Published in: Education, Technology, Business

Computerised cephalometric systems /certified fixed orthodontic courses by Indian dental academy

  1. 1. COMPUTARISED CEPHALOMETRICS INDIAN DENTAL ACADEMY Leader in continuing dental education www.indiandentalacademy.com www.indiandentalacademy.com
  2. 2. ACKNOWLEDGEMENT DR.E.MUNIRATHNAM NAIDU- PRINCIPAL DR.P.JAYAKUMAR. HEAD OF DEPARTMENT ALL STAFF MEMBERS & P.G. COLLEAGUES DEPT. OF ORTHODONTICS & DENTOFACIAL ORTHOPEDICS, MEENAKSHI AMMAL DENTAL COLLEGE CHENNAI www.indiandentalacademy.com
  3. 3. INTRODUCTION • Cephalometric radiography was introduced in 1930’s and computerized cephalometry in 1970’s. • Used in Orthodontics for diagnostic, prognostic and treatment evaluation. www.indiandentalacademy.com
  4. 4. COMPUTERS HAVE FACILITATED  Communication with patients through graphic imaging.  Visualize facial effects of treatment before final decisions are made.  Allows the Orthodontist to design the face first and measure what is needed to get there. www.indiandentalacademy.com
  5. 5. COMPUTER APPLICATIONS IN PREDICTION • It offers treatment planing manipulations such as growth estimation, orthopedic intervention, orthodontic tooth movement and orthognathic surgery. • Can be used for case diagnosis and treatment planing. • Can be used for formulation of computer generated treatment plans, so called visual treatment objectives (VTO’s) or surgical www.indiandentalacademy.com treatment objectives (STO’s).
  6. 6. www.indiandentalacademy.com
  7. 7. www.indiandentalacademy.com
  8. 8. ADVANTAGES OVER MANUAL TECHNIQUE • Faster than manual technique. • Removes human error except for errors of landmark identification. • Facilitates the use of double digitization of the land marks and the significantly increases the reliability of the analysis. www.indiandentalacademy.com
  9. 9. Contd... • Easy storage and retrieval of cephalometric values and tracing. • Cephalometric data can be combined with patient’s files, photographs and dental casts. • In Orthognathic surgery computerized cephalometric prediction of the surgical outcome on hard tissue and soft tissue profile are better www.indiandentalacademy.com than manual technique.
  10. 10. LANDMARK TRACING MANUAL COMPUTERIZED www.indiandentalacademy.com
  11. 11. TRACINGS -ANALYSIS MANUAL COMPUTERISED www.indiandentalacademy.com
  12. 12. TECHNICAL PRINCIPLES • It can be divided in to two components 1. Data Acquisition 2. Data Management • Data acquisition is achieved by various means including ionizing radiation, magnets, sound and light. www.indiandentalacademy.com
  13. 13. IMAGE ACQUISITION • Three methods are available 1. The phosphor plate technique 2. Direct receptor technique 3. Transparency scanner technique www.indiandentalacademy.com
  14. 14. THE PHOSPHOR PLATE TECHNIQUE • Uses Photo stimulable phosphor plates instead of film. • Conventional X-ray tube is used to expose the plate. • The sensitivity of the plate allows a reduction in x-ray exposure up to 90%. • Plates are reusable. www.indiandentalacademy.com
  15. 15. DIRECT RECEPTOR TECHNIQUE • Photo sensitive such as a CCD in place of x-ray film. • Conventional x-ray tube is used. • The sensor transfers its data through a thin cable directly to an interface board in a computer • Data are converted to a gray scale image and saved to the disk. www.indiandentalacademy.com
  16. 16. TRANSPARENCY SCANNER TECHNIQUE • Simplest and least expensive method. • X-ray film is scanned by a light source. • The transmitted light is detected by a CCD and is digitized into gray scale intensities. www.indiandentalacademy.com
  17. 17. DIGITIZATION • A process by which analog information is converted into digital form. • Digitizer is an inexpensive, accurate tool for digitizing cephalograms. • Digitizers may be opaque, translucent or transparent. www.indiandentalacademy.com
  18. 18. Two modes of digitization • Two modes of digitization 1. Point mode 2. Stream mode • Point mode digitization refers to the discrete location of individual landmarks. • Stream mode digitization : A process in which a stream of coordinate pairs is recorded as the user traces a radiographic contour and is controlled by programmable options. www.indiandentalacademy.com
  19. 19. CEPHALOMETRIC ANALYSIS AND TREATMENT PLANING • Cephalometrics - 1. Static function 2. Dynamic function • Static function - Information is derived from the radiographic contours on a current film or collection of films. • Dynamic function - Elements of the cephalometric representation are transformed or manipulated. www.indiandentalacademy.com
  20. 20. DIFFERENT TYPES OF COMPUTERIZED CEPHALOMETRIC SYSTEMS • RMO’s (Rocky Mountain orthodontics) Jiffy orthodontic evaluation. • The first to provide a computer aided cephalometric diagnosis in 1960. • JOE is a static analysis program. • Tracing of lateral or frontal cephalograms using Ricketts, Jarabak, Sassouni, Steiner and Grummons analyses. www.indiandentalacademy.com
  21. 21. POR DIOS (Purpose on request Digitizer input output System) • Is capable of solving measuring problems the two dimensional Cartesian coordinate system. • Based on a library of mathematical procedures (i.e. angular and linear) • It uses Cephalometric analysis including Bjork, Burstone, Coben, Downs, Frontal McNamara, Profile, www.indiandentalacademy.com Ricketts, Seiner and Tweed.
  22. 22. Contd… • Capable to produce occlusograms from photocopies of dental casts. • It is multilingual. • Can produce a database file containing the results of the digitization. www.indiandentalacademy.com
  23. 23. DENTOFACIAL PLANNER • Computer aided diagnostic and treatment planing software system. • It works with an IBM compatible to 286 or 386processor. • It allows to do superimpositions, estimate facial growth, to simulate the skeletal and soft tissue effects of orthopedic appliances and to stimulate www.indiandentalacademy.com orthodontic tooth movement.
  24. 24. QUICK CEPH IMAGE • Programme designed especially for high end macintosh computers. • A high resolution monitor should be used. • The Hardware also consists of a black- white camera, camera stand and a colour printer. • It allows the user to take all the patient’s pictures, including intra orals. www.indiandentalacademy.com
  25. 25. DIGI GRAPH • Is a synthesize of video imaging, computer technology and 3 dimensional sonic digitizing. • Work station equipment measures above 5 feet x 3 feet x 7 feet. • This device uses sonic, digitizing electronics to record cephalometric landmarks by lightly touching the sonic digitizing probe to the patients skin. • Three dimensional www.indiandentalacademy.com
  26. 26. Digigraph uses sonic digitizing electronics to record cephalometric landmarks by lightly touching the sonic digitizing probe to the patient’s skin. www.indiandentalacademy.com
  27. 27. TREATMENT VISUALIZATION APPLICATIONS • Applied to cephalometric projections of anticipated growth and treatment response. • Two visualization approaches 1. Image Editing 2. Manipulation of linked pairs. photocephalometric www.indiandentalacademy.com
  28. 28. Graphic Imaging - Treatment simulations Initial Record High pull H. G 4’s Extraction www.indiandentalacademy.com Growth Forecast Mandibular Advancement
  29. 29. IMAGE EDITING SYSTEMS • Facial images are modified using a variety of simple image editing tools to stimulate the effects of the treatment on facial form. www.indiandentalacademy.com
  30. 30. PHOTO CEPHALOMETRIC TREATMENT VISUALIZATION • These are done by linking digitized lateral cephalograms to lateral facial bitmapped imaged for automatic facial transformation. • Treatment visualization applications perform cephalometric prediction and image transformation in a manner that appears tobe virtually simultaneous. www.indiandentalacademy.com
  31. 31. PHOTO CEPHALOMETRIC TREATMENT VISUALIZATION www.indiandentalacademy.com
  32. 32. SELECTION OF COMPUTERIZED SYSTEM • User friendly • Should transform all digitized points into x and y coordinates, • Compatible with all cephalometric analyses. • Easy to modify and add new points to the system. • Should have a graphic demonstration of the patient’s structures. www.indiandentalacademy.com
  33. 33. Contemporary diagnosis and treatment planning have been taken to a different level with the advent of computerised cephalometrics. With ever widening technological advances, this will be the future of orthodontic diagnosis, treatment planning, prediction of growth and treatment outcome, be it orthodontic treatment or orthognathic surgery. www.indiandentalacademy.com
  34. 34. www.indiandentalacademy.com Leader in continuing dental education www.indiandentalacademy.com

×