Craniofacial and Palatal Abnormalities

Question 1

what are clefts classified based on

Answer 1

relation to the incisive foramen

Question 2

what type of cleft if you are ANT to incisive foramen

Answer 2

primary cleft

Question 3

what type of cleft is you are POST to incisive foramen

Answer 3

secondary cleft

Question 4

what type of cleft if it is the entire definitive palate

Answer 4

complete cleft

Question 5

primary cleft palate cause

Answer 5

failure of max process to fuse to IM process

can be bi, uni, or median

Question 6

3 types of primary clefts

Answer 6

1. uni cleft lip and alveolar ridge
2. uni cleft lip and alveolar ridge and 1º palate
3. bilateral cleft lip and 1º palate

Question 7

what causes 2º cleft palates

Answer 7

failure of the lateral palatal SHELVES to fuse together and NASAL SEPTUM

Question 8

3 types of 2º cleft palates

Answer 8

1. midline cleft of hard and soft palate
2. cleft soft palate
3. cleft uvula

Question 9

what causes complete clefts

Answer 9

failure of LATERAL PALATAL SHELVES to fuse with each other, IM segment, and nasal septum

Question 10

2 types of complete clefts

Answer 10

uni cleft lip and complete palate
bi cleft lip and complete palate

Question 11

T/F

facial clefts on the lower jaw are more common

Answer 11

FALSE!! they are super rare

Question 12

what is a dimple on chin ranging to complete separation on lower jaw called

Answer 12

lower jaw cleft

Question 13

what causes lower jaw clefts

Answer 13

failure of NC to MIGRATE
and/or
failure of ECTOMES to PROLIFERATION