8. Deep face

Question 1

What is a sign that your buccinator is not working well?

Answer 1

Food cannot stay between the molars and the food drops into the side of your cheek and must be removed with a finger

Question 2

Describe the TMJ during gape

Answer 2

There is less than 15 degrees of hinging and more than 15 degrees of anterior sliding

Question 3

Describe dislocation of the TMj: how does it typically dislocate?

Answer 3

Dislocates anteriorly and can pop into the temporal fossa and tears up the joint capsule

Question 4

What happens when there is a fracture at the blue line? (neck of the mandible?

Answer 4

There is a possible V3 injury; which would cause issues with mastication and problems with sensory to the mandibular portion of the face

Question 5

What happens when there is a fracture at the red or green lines? (fracture of the ramus or a fracture of the corpus)

Answer 5

can injure the inferior alveolar vessel and nerve

Question 6

What muscles are involved in elevation of the mandible?

Answer 6

Temporalis, masseter, medial pterygoids

Question 7

What muscles are involved in depression of the mandible?

Answer 7

Lateral pterygoids, suprahyoid, and infrahyoid

Question 8

What muscles are involved in protrusion of the mandible?

Answer 8

Lateral pterygoids, masseter, and medial pterygoids

Question 9

What muscles are involved in retrusion of the mandible

Answer 9

temporalis, masseter

Question 10

What muscles are invovled in the lateral movements of the madible?

Answer 10

Ipsilateral temporalis and the masseter, contralateral pterygoids

Question 11

What is pictured?

Answer 11

Saggital view of the TMJ when the mouth is closed

Question 12

What is pictured?

Answer 12

Sagittal CT section of the mouth widely open; the articular disc is moved forward anteriorly