The document discusses the development of occlusion from birth through adulthood. It describes the key periods of occlusal development as the neonatal period, primary dentition period, mixed dentition period, and permanent dentition period. During each period, tooth eruption sequences and changes in overbite, overjet, and molar and incisor relationships are outlined. The document also discusses the keys to ideal occlusion as proposed by Andrew, including molar interarch relationship, crown angulation and inclination, absence of tooth rotation, tight contacts, and having a curve of Spee not exceeding 1.5mm.
The document discusses the development of occlusion from birth through adulthood. It begins by defining occlusion and describing the genetic and environmental factors involved in its development. It then outlines the key stages and features of occlusion in the predentate, deciduous, mixed, and permanent dentition periods. This includes descriptions of dental arch dimensions, tooth eruption sequences, transitional periods like the "ugly duckling stage", and how guidance from primary teeth influences the alignment of permanent teeth. The goal of optimal occlusion development is achieving a perfect interdigitation of the permanent dentition through coordinated jaw growth, tooth formation and eruption.
Preventive And Interceptive Orthodonticsshabeel pn
The document discusses preventive and interceptive orthodontics. It describes various procedures used in preventive orthodontics like parent education, caries control, space maintenance, and management of oral habits. Interceptive orthodontics aims to prevent potential malocclusions from progressing and includes serial extraction, correction of developing crossbites, control of habits, space regaining, and intercepting skeletal malrelations. Common space maintainers and habit breakers used are also outlined.
Study models are essential records in orthodontics that provide a 3D representation of the teeth and occlusion. A study model has two parts - the anatomic portion showing the teeth and soft tissues, and the artistic portion which is the stone base. Models need to be trimmed accurately to reproduce the dental anatomy and occlusion. Various analyses like Carey's, Ashley Howe's and Bolton's can be done on study models to assess discrepancies and plan treatment. Mixed dentition analysis using Moyer's or Tanaka-Johnston method helps predict the size of unerupted teeth.
1. Space maintainers are appliances used to maintain space created by premature tooth loss. They prevent crowding, impaction, and other issues by holding space open.
2. Common space maintainers include band and loop, crown and loop, lingual arch, Nance palatal arch, and removable appliances. The best option depends on factors like time since tooth loss and dental age.
3. Space maintainers are generally indicated when space is closing, future orthodontics may be simplified, or to prevent issues like supraeruption. They are contraindicated if space isn't closing or the succedaneous tooth is absent.
The active supervision of the developing dentition is a responsibility of the pedodontist. Seeing things from the beginning is most advantageous. By making a detailed study of dentition from initiation through eruption till functional occlusion, we may be able to obtain a clear concept of how occlusion develops and how its development can be guided. Knowledge of the normal development of the dentition and an ability to detect deviation from the normal are essential pre-requisites for pedodontic diagnosis and a treatment plan.
THE USE OF HAND AND WRIST RADIOGRAPH, OPG AND CEPHALOMETRIC RADIOGRAPH FOR TH...Aghimien Osaronse
This document discusses the use of hand and wrist radiographs, cephalometric radiographs, and panoramic radiographs for assessing growth in orthodontic patients. It covers the indications, methods, and clinical relevance of each radiograph type. Hand-wrist radiographs can be used to determine skeletal maturity stages and predict timing of growth spurts. Cephalometric radiographs allow assessment of cervical vertebrae maturation stages, which correlate with remaining growth. Panoramic radiographs provide dental age by evaluating tooth calcification stages. Together these radiographs provide useful information for orthodontic treatment planning and timing.
The document discusses the development of occlusion from birth through adulthood. It begins by defining occlusion and describing the genetic and environmental factors involved in its development. It then outlines the key stages and features of occlusion in the predentate, deciduous, mixed, and permanent dentition periods. This includes descriptions of dental arch dimensions, tooth eruption sequences, transitional periods like the "ugly duckling stage", and how guidance from primary teeth influences the alignment of permanent teeth. The goal of optimal occlusion development is achieving a perfect interdigitation of the permanent dentition through coordinated jaw growth, tooth formation and eruption.
Preventive And Interceptive Orthodonticsshabeel pn
The document discusses preventive and interceptive orthodontics. It describes various procedures used in preventive orthodontics like parent education, caries control, space maintenance, and management of oral habits. Interceptive orthodontics aims to prevent potential malocclusions from progressing and includes serial extraction, correction of developing crossbites, control of habits, space regaining, and intercepting skeletal malrelations. Common space maintainers and habit breakers used are also outlined.
Study models are essential records in orthodontics that provide a 3D representation of the teeth and occlusion. A study model has two parts - the anatomic portion showing the teeth and soft tissues, and the artistic portion which is the stone base. Models need to be trimmed accurately to reproduce the dental anatomy and occlusion. Various analyses like Carey's, Ashley Howe's and Bolton's can be done on study models to assess discrepancies and plan treatment. Mixed dentition analysis using Moyer's or Tanaka-Johnston method helps predict the size of unerupted teeth.
1. Space maintainers are appliances used to maintain space created by premature tooth loss. They prevent crowding, impaction, and other issues by holding space open.
2. Common space maintainers include band and loop, crown and loop, lingual arch, Nance palatal arch, and removable appliances. The best option depends on factors like time since tooth loss and dental age.
3. Space maintainers are generally indicated when space is closing, future orthodontics may be simplified, or to prevent issues like supraeruption. They are contraindicated if space isn't closing or the succedaneous tooth is absent.
The active supervision of the developing dentition is a responsibility of the pedodontist. Seeing things from the beginning is most advantageous. By making a detailed study of dentition from initiation through eruption till functional occlusion, we may be able to obtain a clear concept of how occlusion develops and how its development can be guided. Knowledge of the normal development of the dentition and an ability to detect deviation from the normal are essential pre-requisites for pedodontic diagnosis and a treatment plan.
THE USE OF HAND AND WRIST RADIOGRAPH, OPG AND CEPHALOMETRIC RADIOGRAPH FOR TH...Aghimien Osaronse
This document discusses the use of hand and wrist radiographs, cephalometric radiographs, and panoramic radiographs for assessing growth in orthodontic patients. It covers the indications, methods, and clinical relevance of each radiograph type. Hand-wrist radiographs can be used to determine skeletal maturity stages and predict timing of growth spurts. Cephalometric radiographs allow assessment of cervical vertebrae maturation stages, which correlate with remaining growth. Panoramic radiographs provide dental age by evaluating tooth calcification stages. Together these radiographs provide useful information for orthodontic treatment planning and timing.
This document discusses the classification of malocclusions. It begins with an introduction to orthodontics and the definition of normal occlusion versus malocclusion. It then discusses various ways malocclusions can be categorized, such as by etiology. The document focuses on Angle's classification system of Class I, Class II, and Class III malocclusions based on the molar relationship. It also discusses modifications to Angle's system proposed by others. The document provides an overview of several other classification systems and concludes with limitations of classification systems.
1. The document describes the development of dentition and occlusion from the embryonic oral cavity to the permanent dentition in adults.
2. Key stages of tooth development include the dental lamina, enamel organ, bud stage, cap stage, and bell stage. The primary teeth erupt around 6-8 months and the permanent dentition begins emerging around age 6 with the first molars.
3. The mixed dentition period involves space management during the transition between primary and permanent teeth. The permanent dentition is usually complete by around 13 years of age.
indications and contraindications of rapid maxillary arch expansion,appliances used and effects of rapid maxillary arch expansion/ comparison between rapid and slow expansion
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 provides an overview of orthodontics and orthodontic tooth movement. It defines orthodontics as the specialty concerned with treatment and management of malocclusion. Orthodontic tooth movement results from forces delivered by fixed or removable appliances and occurs through the periodontal ligament in response to these mechanical forces. Proper application of biomechanical principles can improve treatment efficiency. Different types of tooth movement like tipping, translation, and rotation are discussed along with optimal force levels and durations. Factors like wire properties, bracket size and material are also covered.
This document discusses self-correcting anomalies that arise during development from the predentate period to the permanent dentition period. It classifies anomalies based on the developmental period and describes several types including retrognathic mandible, anterior open bite, deep bite, flush terminal plane, primate and physiological spacing, anterior deep bite, end on molar relation, mandibular anterior crowding, and the ugly duckling stage. Many of these anomalies correct on their own through continued growth, eruption of teeth, attrition, and movement of jaws without requiring dental treatment.
Orthodontic study models are three-dimensional plaster reproductions of a patient's teeth and surrounding tissues that are used to accurately diagnose and monitor orthodontic treatment. The document outlines the requirements, uses, and proper procedures for fabricating and trimming study models. Key steps include accurately reproducing the dental anatomy, trimming bases and backs at specific angles, and using wax bites and articulators to achieve proper occlusion. Study models provide a permanent record for treatment planning, evaluation, and legal documentation of a patient's orthodontic condition and progress.
This document discusses the development of occlusion from birth through adulthood. It describes the neonatal period where gum pads are present, the primary dentition period where baby teeth erupt, the mixed dentition period where permanent teeth begin to replace primary teeth, and the permanent dentition period. Key aspects of each developmental period are outlined such as the sequence of tooth eruption, characteristics of different malocclusions, and compensatory mechanisms involved in the transition between dentitions. The document also introduces Andrews' seven keys to normal occlusion.
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.
This document discusses various methods of mixed dentition analysis used to predict the size and space needed for unerupted permanent teeth based on measurements of erupted primary and permanent teeth. It describes Nance analysis, Huckaba's method, Moyer's analysis, Tanaka Johnston analysis, Hixon-Oldfather prediction method, and Staley and Kerber method. The document emphasizes that mixed dentition analysis helps evaluate space availability and plan treatment during the transition from primary to permanent dentition.
Interceptive orthodontics refers to procedures that eliminate or reduce malocclusion in the developing dentition. Local factors that can cause malocclusion include delayed eruption, retained primary teeth, infraocclusion, ectopic eruption, hypodontia, diastema, crowding, and thumb sucking. Treatment for these local factors may include extractions, space maintenance, serial extraction, or appliances to redirect eruption. The timing of interceptive treatment is important to address developing issues before malocclusion worsens.
Ackerman & proffit classification of malocclusionAli Waqar Hasan
This document describes the Ackerman-Proffit analysis system for orthodontic malocclusions. It evaluates malocclusions based on Angle's classification plus five additional characteristics: transverse and vertical discrepancies, crowding, asymmetry, and incisor protrusion. It also assesses the dental arch, profile, lip posture, incisor display, and presence of crossbites or open bites. Rotational deviations around transverse, antero-posterior, and vertical axes (pitch, roll, yaw) are also evaluated. Scoring is done on a scale of 0 to 5 based on severity of the malocclusion characteristics.
This seminar discusses the classification and management of deep bites. It defines deep bites as having excessive overbite and classifies them as incomplete, complete, dental, or skeletal. Diagnosis involves clinical exams, study models, and cephalograms. Treatment depends on the type but generally involves intrusion or extrusion of teeth using removable appliances like bite planes, myofunctional appliances, or fixed appliances like utility arches to correct the overbite. Light forces are used to intrude incisors while heavier forces extrude posterior teeth. The goal is to reduce overbite through controlled tooth movement.
Myofunctional appliances in orthodonticbilal falahi
This document discusses different types of removable functional appliances used in orthodontic treatment, including activators, bionators, and Frankel function regulators. Activators are loose-fitting appliances that guide muscle forces to correct skeletal discrepancies like retrognathic mandibles. Bionators are less bulky than activators and can be worn full-time, using tongue posture modification to guide growth. Frankel function regulators aim to re-educate muscle balance through controlled orthopedic exercises.
This document discusses the buccinator mechanism and its role in maintaining dental arch form and tooth position. It describes the buccinator muscle, its origin, insertion, and actions of drawing the corners of the mouth laterally and flattening the cheeks. The buccinator mechanism encircles the face along with other muscles. It balances pressure from the tongue to help stabilize tooth position. Malocclusions can result from abnormalities in buccinator or other facial muscle function. Myofunctional appliances used in orthodontics rely on muscle activity like that of the buccinator to help correct tooth alignment issues.
This document discusses the diagnosis and treatment of anterior dental crossbites. It defines crossbites as teeth that are malposed buccally, lingually, or labially in relation to the opposing teeth. Anterior crossbites require early treatment to prevent enamel abrasion, tooth mobility, and other issues. Treatment aims to tip affected maxillary teeth labially to establish a stable overbite. Crossbites can be caused by dental anomalies or skeletal issues and are classified as single, segmental, or posterior. Diagnosis involves evaluating the number of teeth involved, tooth inclinations, facial profile, and cephalometric analysis. Treatment may involve appliances like tongue blades, springs, or expanders to correct dental or functional
The document discusses preventive and interceptive orthodontics. Preventive orthodontics aims to preserve normal occlusion and involves procedures like patient education, caries control, space maintenance, and extraction of supernumerary teeth. Interceptive orthodontics is undertaken when a malocclusion has developed and involves procedures like serial extraction to correct developing issues. Serial extraction specifically refers to the planned removal of certain deciduous and permanent teeth to allow other teeth to align normally through physiologic tooth movement into extraction spaces.
This document discusses self-correcting anomalies that arise during development of the dentition from infancy to adulthood. These anomalies include a retrognathic mandible, anterior open bite, and infantile swallowing in the pre-dental period. In the primary dentition stage, common anomalies are anterior deep bite, spacing, and flush terminal plane. Mixed dentition anomalies include anterior deep bite, mandibular crowding, the ugly duckling stage, and end-on molar relationships. Increased overjet and overbite can occur in the permanent dentition stage. All of these anomalies typically correct themselves without treatment as the jaws and dentition develop through growth and the eruption of permanent teeth.
Transient malocclusions are self-correcting developmental variations that occur during dental development. In the pre-dentate period, infants have a retrognathic mandible that corrects over time. In the primary dentition, children commonly have an anterior open bite, deep anterior bite, spacing between teeth, and an edge-to-edge anterior bite that self-correct. In the mixed dentition, a deep bite and crowding are common but resolve with time. The permanent dentition may show increased overjet and overbite during transition that lessen without treatment.
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
1. Occlusion refers to the relationship between the teeth of the upper and lower jaws during normal function and parafunction. An ideal occlusion involves perfect interdigitation of the teeth as a result of developmental processes including jaw growth, tooth formation, and eruption.
2. Over time, humans evolved to have fewer cranial and facial bones to allow for synchronized development of teeth and bones and the formation of a functional occlusion.
3. Occlusal development occurs in stages including the neonatal, primary dentition, mixed dentition, and permanent dentition periods. Each period involves specific eruption sequences and shifts in the jaw and tooth relationships.
DEVELOPMENT OF OCCLUSION IN PEDIATRIC DENTISTRYChsaiteja3
HELLO VISITERS, IAM SAITEJA , BDS 3RD YEAR STUDENT FROM MNR DENTAL COLLEGE , SANGAREDDY. I AND MY BATCH HAS DEVELOPED A PPT ON DEVELOPMENT OF OCCLUSION IN PEDIATRIC DENTISTRY. PLEASE GO THROUGH THE PPT. EVERY TOPIC IS CLEARLY EXPLAINED IN THIS PPT ALONG WITH DIAGRAMS.
This document discusses the classification of malocclusions. It begins with an introduction to orthodontics and the definition of normal occlusion versus malocclusion. It then discusses various ways malocclusions can be categorized, such as by etiology. The document focuses on Angle's classification system of Class I, Class II, and Class III malocclusions based on the molar relationship. It also discusses modifications to Angle's system proposed by others. The document provides an overview of several other classification systems and concludes with limitations of classification systems.
1. The document describes the development of dentition and occlusion from the embryonic oral cavity to the permanent dentition in adults.
2. Key stages of tooth development include the dental lamina, enamel organ, bud stage, cap stage, and bell stage. The primary teeth erupt around 6-8 months and the permanent dentition begins emerging around age 6 with the first molars.
3. The mixed dentition period involves space management during the transition between primary and permanent teeth. The permanent dentition is usually complete by around 13 years of age.
indications and contraindications of rapid maxillary arch expansion,appliances used and effects of rapid maxillary arch expansion/ comparison between rapid and slow expansion
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 provides an overview of orthodontics and orthodontic tooth movement. It defines orthodontics as the specialty concerned with treatment and management of malocclusion. Orthodontic tooth movement results from forces delivered by fixed or removable appliances and occurs through the periodontal ligament in response to these mechanical forces. Proper application of biomechanical principles can improve treatment efficiency. Different types of tooth movement like tipping, translation, and rotation are discussed along with optimal force levels and durations. Factors like wire properties, bracket size and material are also covered.
This document discusses self-correcting anomalies that arise during development from the predentate period to the permanent dentition period. It classifies anomalies based on the developmental period and describes several types including retrognathic mandible, anterior open bite, deep bite, flush terminal plane, primate and physiological spacing, anterior deep bite, end on molar relation, mandibular anterior crowding, and the ugly duckling stage. Many of these anomalies correct on their own through continued growth, eruption of teeth, attrition, and movement of jaws without requiring dental treatment.
Orthodontic study models are three-dimensional plaster reproductions of a patient's teeth and surrounding tissues that are used to accurately diagnose and monitor orthodontic treatment. The document outlines the requirements, uses, and proper procedures for fabricating and trimming study models. Key steps include accurately reproducing the dental anatomy, trimming bases and backs at specific angles, and using wax bites and articulators to achieve proper occlusion. Study models provide a permanent record for treatment planning, evaluation, and legal documentation of a patient's orthodontic condition and progress.
This document discusses the development of occlusion from birth through adulthood. It describes the neonatal period where gum pads are present, the primary dentition period where baby teeth erupt, the mixed dentition period where permanent teeth begin to replace primary teeth, and the permanent dentition period. Key aspects of each developmental period are outlined such as the sequence of tooth eruption, characteristics of different malocclusions, and compensatory mechanisms involved in the transition between dentitions. The document also introduces Andrews' seven keys to normal occlusion.
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.
This document discusses various methods of mixed dentition analysis used to predict the size and space needed for unerupted permanent teeth based on measurements of erupted primary and permanent teeth. It describes Nance analysis, Huckaba's method, Moyer's analysis, Tanaka Johnston analysis, Hixon-Oldfather prediction method, and Staley and Kerber method. The document emphasizes that mixed dentition analysis helps evaluate space availability and plan treatment during the transition from primary to permanent dentition.
Interceptive orthodontics refers to procedures that eliminate or reduce malocclusion in the developing dentition. Local factors that can cause malocclusion include delayed eruption, retained primary teeth, infraocclusion, ectopic eruption, hypodontia, diastema, crowding, and thumb sucking. Treatment for these local factors may include extractions, space maintenance, serial extraction, or appliances to redirect eruption. The timing of interceptive treatment is important to address developing issues before malocclusion worsens.
Ackerman & proffit classification of malocclusionAli Waqar Hasan
This document describes the Ackerman-Proffit analysis system for orthodontic malocclusions. It evaluates malocclusions based on Angle's classification plus five additional characteristics: transverse and vertical discrepancies, crowding, asymmetry, and incisor protrusion. It also assesses the dental arch, profile, lip posture, incisor display, and presence of crossbites or open bites. Rotational deviations around transverse, antero-posterior, and vertical axes (pitch, roll, yaw) are also evaluated. Scoring is done on a scale of 0 to 5 based on severity of the malocclusion characteristics.
This seminar discusses the classification and management of deep bites. It defines deep bites as having excessive overbite and classifies them as incomplete, complete, dental, or skeletal. Diagnosis involves clinical exams, study models, and cephalograms. Treatment depends on the type but generally involves intrusion or extrusion of teeth using removable appliances like bite planes, myofunctional appliances, or fixed appliances like utility arches to correct the overbite. Light forces are used to intrude incisors while heavier forces extrude posterior teeth. The goal is to reduce overbite through controlled tooth movement.
Myofunctional appliances in orthodonticbilal falahi
This document discusses different types of removable functional appliances used in orthodontic treatment, including activators, bionators, and Frankel function regulators. Activators are loose-fitting appliances that guide muscle forces to correct skeletal discrepancies like retrognathic mandibles. Bionators are less bulky than activators and can be worn full-time, using tongue posture modification to guide growth. Frankel function regulators aim to re-educate muscle balance through controlled orthopedic exercises.
This document discusses the buccinator mechanism and its role in maintaining dental arch form and tooth position. It describes the buccinator muscle, its origin, insertion, and actions of drawing the corners of the mouth laterally and flattening the cheeks. The buccinator mechanism encircles the face along with other muscles. It balances pressure from the tongue to help stabilize tooth position. Malocclusions can result from abnormalities in buccinator or other facial muscle function. Myofunctional appliances used in orthodontics rely on muscle activity like that of the buccinator to help correct tooth alignment issues.
This document discusses the diagnosis and treatment of anterior dental crossbites. It defines crossbites as teeth that are malposed buccally, lingually, or labially in relation to the opposing teeth. Anterior crossbites require early treatment to prevent enamel abrasion, tooth mobility, and other issues. Treatment aims to tip affected maxillary teeth labially to establish a stable overbite. Crossbites can be caused by dental anomalies or skeletal issues and are classified as single, segmental, or posterior. Diagnosis involves evaluating the number of teeth involved, tooth inclinations, facial profile, and cephalometric analysis. Treatment may involve appliances like tongue blades, springs, or expanders to correct dental or functional
The document discusses preventive and interceptive orthodontics. Preventive orthodontics aims to preserve normal occlusion and involves procedures like patient education, caries control, space maintenance, and extraction of supernumerary teeth. Interceptive orthodontics is undertaken when a malocclusion has developed and involves procedures like serial extraction to correct developing issues. Serial extraction specifically refers to the planned removal of certain deciduous and permanent teeth to allow other teeth to align normally through physiologic tooth movement into extraction spaces.
This document discusses self-correcting anomalies that arise during development of the dentition from infancy to adulthood. These anomalies include a retrognathic mandible, anterior open bite, and infantile swallowing in the pre-dental period. In the primary dentition stage, common anomalies are anterior deep bite, spacing, and flush terminal plane. Mixed dentition anomalies include anterior deep bite, mandibular crowding, the ugly duckling stage, and end-on molar relationships. Increased overjet and overbite can occur in the permanent dentition stage. All of these anomalies typically correct themselves without treatment as the jaws and dentition develop through growth and the eruption of permanent teeth.
Transient malocclusions are self-correcting developmental variations that occur during dental development. In the pre-dentate period, infants have a retrognathic mandible that corrects over time. In the primary dentition, children commonly have an anterior open bite, deep anterior bite, spacing between teeth, and an edge-to-edge anterior bite that self-correct. In the mixed dentition, a deep bite and crowding are common but resolve with time. The permanent dentition may show increased overjet and overbite during transition that lessen without treatment.
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
1. Occlusion refers to the relationship between the teeth of the upper and lower jaws during normal function and parafunction. An ideal occlusion involves perfect interdigitation of the teeth as a result of developmental processes including jaw growth, tooth formation, and eruption.
2. Over time, humans evolved to have fewer cranial and facial bones to allow for synchronized development of teeth and bones and the formation of a functional occlusion.
3. Occlusal development occurs in stages including the neonatal, primary dentition, mixed dentition, and permanent dentition periods. Each period involves specific eruption sequences and shifts in the jaw and tooth relationships.
DEVELOPMENT OF OCCLUSION IN PEDIATRIC DENTISTRYChsaiteja3
HELLO VISITERS, IAM SAITEJA , BDS 3RD YEAR STUDENT FROM MNR DENTAL COLLEGE , SANGAREDDY. I AND MY BATCH HAS DEVELOPED A PPT ON DEVELOPMENT OF OCCLUSION IN PEDIATRIC DENTISTRY. PLEASE GO THROUGH THE PPT. EVERY TOPIC IS CLEARLY EXPLAINED IN THIS PPT ALONG WITH DIAGRAMS.
This document discusses the development of occlusion from birth through adulthood. It covers:
- The gum pad (neonatal) period from birth to 6 months, characterized by separation of the upper and lower gum pads into tooth buds.
- The primary dentition period from 6 months to 6 years, where the 20 primary teeth erupt in a set sequence. Features include shallow overjet/overbite and ovoid arch form.
- The mixed dentition period from 6-12 years, where permanent molars and incisors erupt alongside primary teeth. This leads to three transitional phases as the dentition changes.
- The permanent dentition period after 12 years when all 32 permanent teeth
This document discusses the development of occlusion from the neonatal period through adulthood. It covers the following key points:
1. Occlusion develops through four periods: neonatal, primary dentition, mixed dentition, and permanent dentition. Each period has characteristic features and relationships between the teeth.
2. During the neonatal period, the gum pads have an anterior open bite relationship. As the primary teeth erupt, different molar relationships can form that influence the permanent dentition.
3. In the mixed dentition period, the first permanent molars erupt and can cause early or late shifts to a class I molar relationship through mechanisms like leeway space. Anterior teeth are also exchanged.
This document discusses the development of occlusion from birth through the primary and mixed dentition periods. It describes the key stages and changes that occur during predental, deciduous dentition, and mixed dentition periods. During the deciduous dentition period, the primary teeth erupt in a spaced arrangement to allow for proper alignment of the permanent teeth. The terminal plane between the maxillary and mandibular second primary molars is an important reference point. A modified Angle's classification is also described for assessing occlusion during the primary dentition stage.
This document discusses the development of occlusion from birth through adulthood. It describes the following periods:
1) Pre-dental period in infants lacking teeth for the first 6 months. Gum pads are present which separate to make space for erupting teeth.
2) Deciduous dentition period from 6 months to 3.5 years when primary teeth erupt in a given sequence. Spacing is normal between teeth.
3) Mixed dentition period involving both primary and permanent teeth from 6-13 years. This includes 3 transitional phases as permanent molars and incisors emerge.
4) Permanent dentition period after 13 years when all permanent teeth have erupted and primary teeth are replaced
This document discusses dental development from the dental lamina stage through the stages of tooth development (bud, cap, bell stages) and root development. It describes the key structures involved at each stage, including the enamel organ, dental papilla, stellate reticulum, and Hertwig's epithelial root sheath. It also summarizes the characteristics of primary dentition, the mixed dentition period, and transitional periods between primary and permanent dentition.
Development of dentiton and occlusion dr ajay srinivasDr. AJAY SRINIVAS
This document discusses dental development from prenatal to adulthood. It covers prenatal tooth development, the neonate mouth, primary tooth eruption and occlusion. The mixed dentition period involves the first and second transitional periods as permanent teeth replace primary teeth. Factors affecting occlusion such as genetics and trauma are examined. Permanent tooth development and occlusion are also summarized.
Interceptive guidance of occlusion with emphasis on diagnosisNC Kolyaei
Serial extraction is an interceptive procedure used to correct hereditary tooth and jaw size discrepancies by extracting primary teeth. It is most effective for Class I malocclusions where the permanent teeth are in a favorable relationship. Careful monitoring of the eruption sequence is important during mixed dentition to identify issues and reduce future crowding through early intervention.
The document discusses the development of occlusion from birth through adulthood. It covers the pre-dentate period where gum pads are present, the primary dentition period where baby teeth erupt, the mixed dentition period where permanent teeth start coming in, and the permanent dentition period when all adult teeth have erupted. Key aspects discussed include the sequence of tooth eruption, characteristics of different dentition stages like overbite and spacing, self-correcting anomalies, and factors that influence occlusion development.
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.
This document discusses occlusal development from birth through adulthood. It begins by describing the gum pads present at birth, noting their segmentation and relationships. It then outlines the four periods of occlusal development: neonatal, primary dentition, mixed dentition, and permanent dentition. For each period, it details the typical eruption sequence and characteristics. The mixed dentition period is subdivided into three phases focusing on molar relationships and shifts. Factors that facilitate the transition between primary and permanent incisors are also explained.
The document discusses the development of occlusion from birth through adulthood. It begins by defining occlusion and describing an ideal occlusion. It then outlines the major periods of occlusal development: the neonatal period involving gum pads in infants; the primary dentition period when baby teeth erupt; the mixed dentition period involving both primary and permanent teeth; and the permanent dentition period when all adult teeth erupt. Key processes discussed include tooth eruption sequences, transitions between dentition periods, and changes to the dental arches that allow proper alignment of teeth.
This document provides an overview of occlusion, including definitions, concepts, classifications, and development across different dentition stages. Some key points:
- Occlusion refers to the contact relationship between teeth during function or parafunction. Centric occlusion is the first tooth contact when mandible is in centric relation.
- Primary dentition occlusion involves each tooth contacting two teeth in the opposing jaw, except for central incisors. Mixed dentition begins around age 6 as permanent teeth erupt.
- Molar and canine relationships in primary dentition can influence permanent occlusion. A flush terminal plane is ideal, while distal or mesial steps increase risks of Class II or III malocclusion.
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Management of Deepbite /certified fixed orthodontic courses by Indian dental ...Indian dental academy
This document provides information on the management of deep bite malocclusions. It begins by defining deep bite and classifying it as skeletal, dental, true, or pseudo. It then discusses factors related to the development of deep bite such as incisor angulation and mandibular growth patterns. Treatment strategies for correcting deep bite are also outlined, including intrusion of incisors and extrusion of posterior teeth. Considerations for treatment planning such as soft tissues, smile line, and skeletal factors are also reviewed. Orthodontic biomechanics for intruding incisors using intrusion arches are described in detail.
Does Over-Masturbation Contribute to Chronic Prostatitis.pptxwalterHu5
In some case, your chronic prostatitis may be related to over-masturbation. Generally, natural medicine Diuretic and Anti-inflammatory Pill can help mee get a cure.
Rasamanikya is a excellent preparation in the field of Rasashastra, it is used in various Kushtha Roga, Shwasa, Vicharchika, Bhagandara, Vatarakta, and Phiranga Roga. In this article Preparation& Comparative analytical profile for both Formulationon i.e Rasamanikya prepared by Kushmanda swarasa & Churnodhaka Shodita Haratala. The study aims to provide insights into the comparative efficacy and analytical aspects of these formulations for enhanced therapeutic outcomes.
Promoting Wellbeing - Applied Social Psychology - Psychology SuperNotesPsychoTech Services
A proprietary approach developed by bringing together the best of learning theories from Psychology, design principles from the world of visualization, and pedagogical methods from over a decade of training experience, that enables you to: Learn better, faster!
8 Surprising Reasons To Meditate 40 Minutes A Day That Can Change Your Life.pptxHolistified Wellness
We’re talking about Vedic Meditation, a form of meditation that has been around for at least 5,000 years. Back then, the people who lived in the Indus Valley, now known as India and Pakistan, practised meditation as a fundamental part of daily life. This knowledge that has given us yoga and Ayurveda, was known as Veda, hence the name Vedic. And though there are some written records, the practice has been passed down verbally from generation to generation.
Histololgy of Female Reproductive System.pptxAyeshaZaid1
Dive into an in-depth exploration of the histological structure of female reproductive system with this comprehensive lecture. Presented by Dr. Ayesha Irfan, Assistant Professor of Anatomy, this presentation covers the Gross anatomy and functional histology of the female reproductive organs. Ideal for students, educators, and anyone interested in medical science, this lecture provides clear explanations, detailed diagrams, and valuable insights into female reproductive system. Enhance your knowledge and understanding of this essential aspect of human biology.
These lecture slides, by Dr Sidra Arshad, offer a simplified look into the mechanisms involved in the regulation of respiration:
Learning objectives:
1. Describe the organisation of respiratory center
2. Describe the nervous control of inspiration and respiratory rhythm
3. Describe the functions of the dorsal and respiratory groups of neurons
4. Describe the influences of the Pneumotaxic and Apneustic centers
5. Explain the role of Hering-Breur inflation reflex in regulation of inspiration
6. Explain the role of central chemoreceptors in regulation of respiration
7. Explain the role of peripheral chemoreceptors in regulation of respiration
8. Explain the regulation of respiration during exercise
9. Integrate the respiratory regulatory mechanisms
10. Describe the Cheyne-Stokes breathing
Study Resources:
1. Chapter 42, Guyton and Hall Textbook of Medical Physiology, 14th edition
2. Chapter 36, Ganong’s Review of Medical Physiology, 26th edition
3. Chapter 13, Human Physiology by Lauralee Sherwood, 9th edition
One health condition that is becoming more common day by day is diabetes.
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Muktapishti is a traditional Ayurvedic preparation made from Shoditha Mukta (Purified Pearl), is believed to help regulate thyroid function and reduce symptoms of hyperthyroidism due to its cooling and balancing properties. Clinical evidence on its efficacy remains limited, necessitating further research to validate its therapeutic benefits.
1. BY --- PRIYANKA PARIHAR
MDS 1st yr
Dept of Conservative Dentistry
& Endododontic
1
2. Introduction
Periods of occlusal development
Neo-natal period.
Primary dentition period.
Mixed dentition period.
Permanent dentition period
Keys of occlusion
Compensatory curve
Conclusion
References
2
3. The term occlusion is derived from the Latin word, ‘occluso’ defined as the
relationship between all the components of the masticatory system in
normal function, dysfunction, and parafunction .
An ideal occlusion is perfect interdigitation of upper and lower teeth, which
is a result of developmental process consisting of the three main events -
JAW GROWTH
TOOTH FORMATION
ERUPTION
3
6. This period starts soon after birth and lasts upto 6 months . During this period,
the neonate has no teeth
The alveolar process at the time of birth is called the gum pads
6
7. GUM PADS
They are horseshoe shaped pads that are pink,
firm and covered with a layer of dense
periosteum
They are divided into two parts by dental groove
(labiobuccal and lingual).
The gum pad is further divided into 10 segments
by transverse groove; each segment has one
developing tooth sac.
lateral sulcus, which is the transverse groove
between canine and 1st molar region.
This is helpful in predicting inter-arch relation at
a very early stage.
7
8. Anterior open bite relation between upper
and lower gum pads at birth
The Maxillary gum pad is wider and longer than
the Mandibular
Thus when they are approximated, there is a
complete overjet all around.
The only contact that occurs is around the molar
region .
This is called infantile open bite, which is
considered normal and helpful during suckling
8
9. Natal tooth Neonatal teeth
(Present at birth) (Erupt in the first 30 days of life)
9
10. • Superficial position of the developing tooth germ, which predisposes
the tooth to erupt early.
Hereditary factors which was explained by Holt and McIntosh
Natal and neonatal teeth are also found to be associated with
multisystem syndromes(eg;cranofacial dysostosis,) and developmental
abnormalities providing the evidence of genetic contribution
10
12. A radiograph should be made to determine the amount of root development
and the relationship of a prematurely erupted tooth to its adjacent teeth.
King and Lee recommended that inflamed gingival tissue around teeth
should be controlled by applying chlorhexidine gluconate gel 3 times a day.
In some cases with sharp incisal edge of the tooth selective grinding is
advisable.
Most prematurely erupted teeth are hyper mobile because of the limited root
development and there is danger of aspiration, in which case the removal of
the tooth is indicated. 12
17. There are 48 teeth/parts of teeth present in the
jaw. At this time there are more teeth in the jaws
than at any other time.
17
18. The initiation of primary teeth occurs during first sixth weeks of
intrauterine life and the first primary tooth erupts at the age of 6 months.
It takes around 2½ to 3½ years for all the primary teeth to establish
their occlusion.
FEATURES INCLUDES
SPACING
Shallow overjet & overbite (Anterior Teeth Relationship)
vertical inclination of anteriors
Molar Relationship
18
19. A) Spaced dentition
Usually seen in the deciduous dentition to accommodate the larger
permanent teeth in the jaws.
More prominent in the anterior region, and are called ‘physiological
spacing’ or ‘developmental spacing’.
The spaces present are of two types-
1. Primate spaces
2. Physiologic spaces
19
20. PRIMATE SPACES
Exist between the maxillary lateral incisors and the canines (present
mesial to maxillary deciduous canines) and mandibular canines and
1st deciduous molars (present distal to mandibular deciduous canines).
20
21. PHYSIOLOGIC SPACES
Present in between all the primary teeth and play an important role in
normal development of the permanent dentition.
The total space present may vary from
• 0 to 8 mm with the average 4 mm in the maxillary arch
• and 1 to 7 mm with the average of 3 mm in the mandibular arch.
21
22. B) Nonspaced dentition
lack of space between primary teeth either due to small jaw or larger
teeth.
This type of dentition usually indicates to crowding in developing
permanent dentition.
22
23. 1 Overbite
It is the distance, which the incisal edge of the maxillary
incisors overlaps vertically the incisal edge of the
mandibular incisors.
The primary incisors erupt in a deep overbite which is
corrected by eruption of posterior teeth around five years
of age.
The average overbite in the primary dentition is 2 mm.
2 Edge-to-edge bite
When the incisal edges of the two incisors are in the
same plane. This is also called as a zero overbite.
This is most common due to attrition, lengthening of
ramus and downward-forward growth of mandible. 23
24. 3 Overjet
It is the horizontal distance between the lingual aspect of
the maxillary incisors and the labial aspect of the
mandibular incisors when the teeth are in centric occlusion.
The average in primary dentition is 1 to 2 mm.
At the age of 2 years it is seen often to be 4 mm with a
fairly continious decrease upto the age of 5years
24
26. (MOLAR
RELATIONSHIP)
The mesiodistal relation between the distal surfaces of
maxillary and mandibular 2nd deciduous molars is called as
terminal plane.
This is of 3 types;
1. Flush terminal plane:
If the distal surface of maxillary and mandibular deciduous
second molars are in the same vertical plane; then it is
called a flush terminal plane.
It is usually most favorable relationship to guide the
permanent molars into class I
It is seen in 74 %
26
28. 2. Mesial-step terminal plane:
The distal surface of the deciduous 2nd mandibular molar is more
mesial to that of the deciduous 2nd maxillary molar.
Seen in 14 %
28
29. 3. Distal-step terminal plane
The distal surface of the deciduous 2nd mandibular molar is more
distal to that of the deciduous 2nd maxillary molar.
Seen in 10 %
29
32. The period during which both the primary and permanent teeth are present
in the mouth together is known as mixed dentition.
This phase begins at around 6 years with the eruption of 1st permanent
molars and lasts till about 12 years of age.
Mixed dentition period can be divided into three phases
1. FIRST TRANSITIONAL PERIOD
2. INTER-TRANSITIONAL PERIOD
3. SECOND TRANSITIONAL PERIOD
32
33. I. FIRST TRANSITIONAL
PERIOD
This is characterized by emergence of 1st permanent molars and exchange of
deciduous incisors with permanent incisors.
Emergence of 1st Permanent Molars
The anteroposterior relation between the two opposing 1st molars after
eruption depends on their positions previously occupied within the jaws,
sagittal relation between the maxilla and mandible.
Occlusal relationship is established by the cone and funnel mechanism with
the upper palatal cusp (cone) sliding into the lower occlusal fossa (funnel).
The mandibular molars are the first to erupt at around 6 years of age.
33
34. ■ Early mesial shift
The eruptive forces of 1st permanent molars are strong enough to push
the deciduous molars forward in the arch thereby utilizing the primate
spaces and thus establishing class I relationship
Early mesial shift
34
35. LATE MESIAL SHIFT
Many children lack primate spaces and have a nonspaced dentition and
thus erupting permanent molars are not able to establish Class I relation .
In these cases, the molars establish Class I relation by drifting mesially and
utilizing the Leeway space after exfoliation of deciduous molars and this is
called late mesial shift
35
36. EXCHANGE OF INCISORS
The deciduous incisors are replaced by permanent
incisors during this phase.
This period of transition is from 6½ to 8½ years.
The permanent incisors are larger as compared to
their primary counterparts and thus require more
space for their alignment.
This difference between space available and space
required is called the incisor liability
This is 7 mm for maxillary arch and 5 mm for
mandibular arch.
36
37. ■ Utilization of inter-dental spacing of primary
incisors:
Averages 4 mm in the maxillary arch and 3 mm in
the mandibular arch.
■ Increase in inter-canine arch width:
This occurs as the child grows. In males, it is 6 mm
for maxilla & 4 mm for mandible whereas in females,
it is 4.5 mm in maxilla & 4 mm in mandible.
■ Increase in inter-canine arch length:
This is due to growth of jaws.
37
38. ■ Change in inter-incisal angulations
The angle between the maxillary and mandibular incisors is about 150°
in primary dentition, whereas it is about 123° in permanent dentition
thus allows more proclination and gaining space for incisor alignment.
This is called incisor labiality
38
39. II. INTER-TRANSITIONAL PERIOD
In this period, the maxillary and
mandibular arches consist of permanent
incisors and permanent molars that
sandwich the deciduous canines and
molars.
This phase lasts for 1½ years and is
relatively stable.
39
40. Root formation of emerged incisors, and molars continues, along with
concomitant increase in alveolar process height.
Resorption of roots of deciduous canines and molars.
40
41. III. SECOND TRANSITIONAL PERIOD
This phase is characterized by replacement of deciduous molars & canines by
premolars & permanent cuspids & the eruption of maxillary lateral incisors and
canines.
This takes place around 9 to 11 years of age.
Replacement of Deciduous Molars and Canine
The combined mesiodistal width of permanent canine and premolars is less
than that of deciduous canine and molars. This extra space is called Leeway
space of Nance
And is utilized by molars to establish Class I relationship through late mesial
shift.
41
42. Leeway space of Nance
It is 1.8 mm (0.9 mm on each side) in maxillary arch & 3.4 mm (1.7 mm
on each side) in mandibular arch.
42
43. The dimensions of deciduous 2nd molars is more than that of 2nd
premolars, this excess space is called as E-space
43
44. ERUPTION OF MAXILLARY CANINE
As the permanent maxillary canines erupt they displace the roots of
maxillary lateral incisors mesially. This force is transmitted to the central
incisors & their roots are also displaced mesially.
Thus, the resultant force causes the distal divergence of the crown in an
opposite direction,leading to midline spacing.
This is called Ugly Duckling Stage or Broadbent phenomenon.
This self-correcting malocclusion is seen around 8 to11 years of age and
was first described by H Broadbent in 1937.
44
46. This condition corrects itself after the canines have erupted. The
canines after eruption apply pressure on the crowns of incisors thereby
causing them to shift back to original positions.
46
48. The entire permanent dentition is
formed within the jaws after birth
except for the cusps of 1st molar,
which are formed before birth.
This period is marked by the
eruption of the four permanent
second molars
48
49. Some changes that can be seen in permanent dentition are:
Horizontal overbite decreases(Overjet ) by 0.7 mm between 12 and 20
years of age
Vertical overlap (Overbite)decreases up to the age of 18 years by 0.5 mm
49
50. The permanent incisors develop
lingual to the deciduous incisors
and move labially as they erupt.
50
54. Andrew in 1970 put forward keys to occlusion after studying 120
patients with ideal occlusion. He hypothesized that the presence of the
following features is necessary for an ideal occlusion:
1. Molar inter-arch relationship
2. Mesiodistal crown angulation
3. Labiolingual crown inclination
4. Absence of rotation
5. Tights contacts
6. Curve of spee
7. Bolton’s discrepancy.
54
55. Mesiobuccal cusp of the maxillary 1st molar
should fall into the mesiobuccal groove of the
mandibular 1st molar
And the distal surface of the Distobuccal
cusp of the upper 1st permanent molar
should make contact and occlude with mesial
surface of the Mesiobuccal cusp of the lower
2nd molar.
55
56. The angulation of the facial axis of every clinical crown should be
positive
The gingival portion of the long axis of the all crowns must be distal
than the incisal portion
56
57. Crown inclination refers to the
labiolingual or buccolingual inclination
of the long axis of the crown
Cervical area of crown is lingually
placed then it is called as positive
crown inclination and if it is more
bucally then it is called as negative
crown inclination.
Maxillary incisors-positive, mandibular
incisors-negative.
57
58. The fourth key to normal occlusion is that the teeth should be free of
undesirable rotations
58
59. Contact points should be tight (no spaces).
In absence of abnormalities such as genuine tooth size discrepancies,
contact point should be tight.
59
60. Occlusal plane should be flat with
curve of Spee not exceeding 1.5 mm.
Intercuspation of teeth is best when the
plane of occlusion is relatively flat.
During the adolescent dentition stage,
the curve depth decreases slightly and
then remains relatively stable into early
adulthood.(Am J Orthod Dentofacial
Orthop 2008;134:344-52)
60
61. 61
A deep curve of Spee results in a more
confined area for the upper teeth, creating
spillage of the upper teeth progressively
mesially and distally
A flat plane of occlusion is most receptive
to normal occlusion
A reverse curve of Spee results in
excessive room for the upper teeth
65. The curve of spee given by F. Graf Von Spee in Germany in 1890
It refers to the anteroposterior curvature of the occlusal surfaces
beginning at the tip of the mandibular cuspid and following the buccal
cusps of bicuspid and molar continuing as an arch through the condyle.
65
66. It is a curve that contacts the buccal and lingual
cusps tips of the mandibular posterior teeth.
The curve of wilson is medio-lateral on each side of
the arch
It helps in two ways
– Teeth aligned parallel to direction of medial pterygoid
for optimum resistance to masticatory forces.
– The elevated buccal cusps prevent food from going
past the occlusal table.
66
67. This curve is obtained by extending the curve of spee and curve of
wilson to all cusps and incisal edges , which forms a sphere of a 4 inch
radius, mandibular arch adopted itself to the curved segment of a
sphere
67
68. Occlusion, ideally aligned or malalinged is the result of an
complicated synthesis of genetics and environmental
relationship throughout the early developmental stages of
childhood.
A knowledge of growth and development of occlusion helps
to differentiate abnormal from normal relation of teeth and
helps in diagnosis & treatment planning.
68
69. Textbook of Pedodontics: Shoba Tandon.
Orthodontics the art & science: S. I. Bhalajhi.
Dental Anatomy, Physiology & Occlusion:
Wheeler.
Textbook of Pediatric Dentistry – Nikhil Marwah
69