Anatomy

Question 1

What type of joint is the TMJ?

Answer 1

ginglymoarthrodial

superior part is arthrodial (translation)
inferior part is ginglymoid (rotation)

Question 2

Normal saliva production

Answer 2

stimluated: 1-2 mL/min
unstimulated: 0.3-0.4 mL/min

Question 3

How do you determine salivary flow rate?

Answer 3

1) intraoral inspection: dry/sticky? ropey?
2) empirical: drooling in a cup (unstimulated), chewing parrafin (stimulated)

Question 4

Where does unstimulated saliva mostly come from?

Answer 4

submandibular
(mixed, mostly serous)

Question 5

Where does stimluated salivary flow mostly come from?

Answer 5

parotid
(mostly serous)

Question 6

What muscles are involved in protrusion of the mandible?

Answer 6

• lateral pterygoid (inferior head)
• medial pterygoid

to a lesser degree:
masseter (superficial fibers)
temporalis

Question 7

What muscles are involved in laterotrusion?

Answer 7

• lateral pterygoid
• medial pterygoid

both on the contralateral side