Skeletal Relationship Revision Questions

Question 1

What is the anterior posterior skeletal realationship

Answer 1

where the maxilla lies in relation to mandible

Question 2

Class 1

Answer 2

mandible 2-3mm benhind the maxilla

Question 3

Class 2

Answer 3

mandible up to 100mm behind the maxilla

teeth have OJ (retrognathic mandible)

Question 4

Class 3

Answer 4

maxilla almost inline with mandible 
<2-3mm 
Reverse OJ (anteriorposterior maxillary definciency)

Question 5

Incisor Class 1

Answer 5

lower incisor edges occlude with or lie immediately below the cingulum plateu of the upper central inciros

Question 6

Incisor Class II div 1

Answer 6

lower incisors edge lie posterior to the cingulum plateau of the upper incisors
upper inciosors are proclined and increase in OJ

Question 7

Incisor Class II div 2

Answer 7

lower incisor edges lie postieor to the cingulum plateau of the upper incisors
Upper incisors are retroclined Oj is minimal or may be increase

Question 8

Incisor - Class III

Answer 8

lower incisor edges lie anterior to the cingulum plateau of the upper incisors
OJ is reduced or reveresed