Classification of Malocclusion

Question 1

what is classification

Answer 1

a grouping of clinical cases of similar appearance of ease in handling and discussion
- it is not a system of diagnosis, method for determining prognosis or a way of defining treatment

Question 2

why do we classify

Answer 2

• traditional reasons
• ease of reference
• communication

Question 3

what is angle classification based on

Answer 3

the relationship of the first permanent molars and the alignment of the teeth relative to the line of occlusion

Question 4

describe a class I occlusion

Answer 4

the MB cusp of the upper first molar articulates or occludes on the buccal groove of the lower first molar

Question 5

what is normal occlusion

Answer 5

normal or class I molar relationship , teeth are well aligned with proper overbite and overjet

Question 6

what is angle class II classification and what is another name for it

Answer 6

• AKA distoocclusion
• lower molar distal to upper molar, relation of other teeth to line of occlusion not specified

Question 7

what is class I malocclusion

Answer 7

normal or class I molar relationship but teeth are crowded or rotated

Question 8

what is a class II division I

Answer 8

• maxillary incisors in proclination
• increased overjet
• prognathic maxilla and/or retrognathic mandible

Question 9

what is a class II division II

Answer 9

• the maxillary central incisors are retroclined
• the maxillary lateral incisors have tipped labially and mesially, sometimes overlapping the central incisors

Question 10

what is class III maloclussion and what is another name for it

Answer 10

• AKA mesioocclusion
• lower molar mesial to upper molar, relation of other teeth to line of occlusion not specified

Question 11

what is subdivision

Answer 11

asymmetric occlusion where one side is class II or III and the other is usually a class I