TMJ

Question 1

mechanics of lateral excursion

Answer 1

ipsilateral TMJ spinning in place with the contralateral TMJ sliding
anterior.

Question 2

mandibular depression mechanics

Answer 2

both coldyle roll and slide ant of T disc, and also slides ant to maintain a congruent surface with the fossa

Question 3

function ROM for opening of mouth

Answer 3

40mm

Question 4

how much mandibular opening is allowed by TMJ lig? after that what happens

Answer 4

20-25 mm of opening via lig, then condyle translates anterior to further opening

Question 5

mechanics of protrusion

Answer 5

both TMJs slide anteriorly

Question 6

what are the mechanics of lateral excrusion

Answer 6

ipsilateral TMJ spinning in place while contralateral slides ant

Question 7

muscle involved in opening of mouth and normal ROM

Answer 7

lateral pterygoid

35-55mm

Question 8

closing of mouth muslces and

Answer 8

termporalis, masseter, medial pterygoid

Question 9

protrusion of mandible muscles and normal ROM

Answer 9

medial and lateral pterygoid

7 mm

Question 10

retraction of mandibles muscles and normal ROM

Answer 10

temporalis

3-4 mm

Question 11

lateral deviation of mandilbe

Answer 11

lateral pterygoid (ipsilateral), medial pterygoid (contralateral),
10-15 mm

Question 12

disc displacement with reduction will sound like??/

Answer 12

popping

Question 13

disc displacement with reduction will sounds like:

Answer 13

no popping

Question 14

joint mob for restriction in TMJ

Answer 14

primary is inferior