Third Molars 2

Question 1

what extra-oral clinical aspects of third molars do we need to assess

Answer 1

TMJ
limited mouth opening
lymphadenopathy
facial asymmetry
muscles of mastication

Question 2

what 6 intra-oral clinical aspects of third molars do we need to assess

Answer 2

soft tissue
dentition
eruption statuses of other teeth
condition of remaining dentition
occlusion
oral hygiene
caries status

Question 3

when would radiographs be taken for extraction of 3rd molars

Answer 3

only if surgical intervention is being considered

Question 4

what are the six radiographic signs that a third molar is too close to the IAN

Answer 4

diversion of inferior dental canal
darkening of root where crossed by the canal
interruption of white lines of canals
deflection of root
narrowing of inferior dental canal
narrowing of the root

Question 5

what should be considered where a radiograph has shown a close relationship between third molar and inferior dental canal

Answer 5

CBCT
cone beam computed tomography

Question 6

what is the angulation of impacted 3rd molars measured against

Answer 6

curve of spee

Question 7

what orientation can third molars be impacted

Answer 7

horizontal
mesial/ distal
vertical
transverse

Question 8

how is the depth of impaction recorded for third molars

Answer 8

superficial
moderate
deep

Question 9

what is a superficial impaction

Answer 9

crown of 8 related to crown of 7

Question 10

what is a moderate impaction

Answer 10

crown of 8 related to crown and root of 7

Question 11

what is a deep impaction

Answer 11

crown of 8 related to root of 7