CLASSIFICATION OF MALOCCLUSION

Contents

Introduction

Occlusion=Oc (up) + clusion(closing)

Functional Occlusion

Malocclusion= mal(bad)+ occlusion(bite)

Historical Perspective

TYPES OF MALOCCLUSIONS

Crowding classification based on etiology

Interarch Malocclusions

Sagittal Plane Mal-relation

Vertical Plane malrelations

Transverse Plane malrelations

Buccal nonocclusion

SKELETAL MALOCCLUSONS

Systems of Classification

Angle's System Of Classification

Why 1st permanent molars ?

Class I Malocclusion

Dewey's Modification Of Angle'sClass I Malocclusion(1915)

Bimaxillary Protrusion

Class II Malocclusion

Class II Division I

Moyer’s Classification of Class II

Horizontal Types

TYPE-A (Dental class2)

TYPE-B (Max excess)

TYPE-C

TYPE-D

TYPE-E

TYPE-F

VERTICAL TYPES

TYPE-2 “ Square face”

TYPE-3

TYPE-4

TYPE-5

Class II Division II

Von-Der-Linden Classification of class II/2

Class II Sub-division

Sunday Bite

Class III Malocclusion

Class III modifications of Dewey

Class IV

Lischer's Modifications ofAngle's classification (1933)

Intermediate Situation

Angle’s Classification Revisited

Pseudo Class I

Merits of Angle’s Classification

Drawbacks of Angle's classification

Incisor Classification(1965)

Class I

CLASS II

CLASS III

Modification Of Incisor Classification

Merits of Incisor Classification

Canine Classification

Simon’s System(1926)

Merits and Demerits of Simon System

Bennet's Classification(1912)

Ackerman-Proffit System: Orthogonal Analysis(1960)

Venn Diagram

Addition To The Five-characteristics Classification System

Rotational Axes

Rotational Axes

Merits and Demerits of Ackermann Proffit Classification

Etiologic classification(Moyers)

Katz premolar Classification

Merits and Demerits of Katz Classification

Skeletal Classification: Salzman(1950)

Molar relation in primary dentition

Limitations of Classification system

Conclusion

Bibliography