Types of Malocclusion
Skeleto-dental Dysplasia
Skeletal Dysplasia
Classification of Malocclusion
What is a Classification System?
● A grouping of clinical cases of similar appearance for ease in handling and
discussion
● To classify malocclusion, one must have a concept of normal occlusion
● It is not a system of diagnosis, method for determining prognosis, or a way
of defining treatment
Variations of Classification of Malocclusion
A. Angle's Classification
B. Angle's Classification with Dewey and Anderson's Modification
C. Lischer's Classification
D. Simon's Classification
E. Ackerman-Proffit Classification
F. Skeletal Classifications
A. Angle's Classification
● Permanent first molar is the "key to occlusion"
● It still serves a very useful purpose in describing the anteroposterior
relationships of the maxillary and mandibular dental arches which usually
reflect the jaw relationship
Class I
Class II:
Division 1, Division 2
LEGASPI
, Class 3
B. Angle's Classification with Dewey Anderson Modification
Class I: - the mesiobuccal cusp of the upper 6 should fall on the mesiobuccal
groove of the lower 6.
● Type 1 - crowding
● Type 2 - labioversion of anteriors
● Type 3 - anterior crossbite
● Type 4 - posterior crossbite
● Type 5 - mesial drifting of molar
LEGASPI
Skeleto-dental Dysplasia
Skeletal Dysplasia
Classification of Malocclusion
What is a Classification System?
● A grouping of clinical cases of similar appearance for ease in handling and
discussion
● To classify malocclusion, one must have a concept of normal occlusion
● It is not a system of diagnosis, method for determining prognosis, or a way
of defining treatment
Variations of Classification of Malocclusion
A. Angle's Classification
B. Angle's Classification with Dewey and Anderson's Modification
C. Lischer's Classification
D. Simon's Classification
E. Ackerman-Proffit Classification
F. Skeletal Classifications
A. Angle's Classification
● Permanent first molar is the "key to occlusion"
● It still serves a very useful purpose in describing the anteroposterior
relationships of the maxillary and mandibular dental arches which usually
reflect the jaw relationship
Class I
Class II:
Division 1, Division 2
LEGASPI
, Class 3
B. Angle's Classification with Dewey Anderson Modification
Class I: - the mesiobuccal cusp of the upper 6 should fall on the mesiobuccal
groove of the lower 6.
● Type 1 - crowding
● Type 2 - labioversion of anteriors
● Type 3 - anterior crossbite
● Type 4 - posterior crossbite
● Type 5 - mesial drifting of molar
LEGASPI
