TMD

Question 1

collateral ligaments of TMJ

Answer 1

medial goes from disc to medial pole

lateral goes from disc to lateral pole

Question 2

stylomandibular ligament

Answer 2

• primary function to limit excessive jar protrusion

Question 3

sphenomandibular ligament

Answer 3

• no significant affect on limiting normal mandibular motion

Question 4

articular disc

Answer 4

• dense fibrous tissue
• divides joint into superior and inferior compartments
• posterior attachment to the temporal bone through a section of loose retrodiscal tissue
• anterior attachment to the capsule and superior lateral pterygoid muscle

Question 5

mandibular opening muscles

Answer 5

• inferior lateral pterygoid
• digastric
• secondary muscles: stylohyoid, geniohyoid, mylohyoid

40-60 mm

Question 6

mandibular closing muscles

Answer 6

temporalis
masseter
medial pterygoid

Question 7

lateral mandibular movement

Answer 7

• temporalis (ipsilateral)
• medial and lateral pterygoid (contralateral)

5-10 mm

Question 8

protrusion

Answer 8

5-10 mm

masseter
medial pterygoid
lateral pterygoid

Question 9

retrusion

Answer 9

temporalis
digastric
hyoid muscles

small mobility

Question 10

innervation

Answer 10

• trigeminal nerve (cn V)
• opthalmic division (orbit and frontal)
• maxillary division (anterior portion of temple, maxillary, nasal cavity, upper teeth)
• mandibular division (post temple, masseter, mandibular, lower teetch)

Question 11

mouth opening

Answer 11

• rotation of mandible (condyle) on articular disc (20-25 mm)
• translation of condyle and disc on mandibular fossa (condyle moves anteriorly and inferiorly; anterior surface of mandible moes posteriorly and inferiorly)

Question 12

mouth closing

Answer 12

• disc and condyle translate together posteriorly
• condyle rotates posteriorly

Question 13

lateral mouth movement

Answer 13

• unilateral rotation of ipsilateral condyle
• unilateral translation of contralateral condyle

Question 14

craniomandibular disorder symptoms

Answer 14

• face or jaw pain
• joint sounds
• limitation in jaw movement
• muscle tenderness
• TMJ joint tenderness
• headache
• ear symptoms
• cervical spine disorder

Question 15

group 1: muscle disorders

Answer 15

• myofascial pain
• myofascial pain with limitations in aperture

Question 16

group 2: disc displacement

Answer 16

• disc displacement with reduction
• disc displacement without reduction but no limitations in aperture
• disc displacement without reduction and with limitations in aperture

Question 17

group 3: arthralgia, arthritis, arthrosis

Answer 17

• arthralgia
• OA of TMJ
• osteroarthrosis of TMJ

Question 18

disc displacement with reduction

Answer 18

S path

Question 19

disc displacement without reduction

Answer 19

jaw with deviate towards involved side

Question 20

condylar subluxation

Answer 20

• shallow articular eminence
• lax capsule and ligaments

give clunk sound

jaw will deviate away from side

Question 21

hypermobility intervention

Answer 21

• stabilization
• teach to not open wide
• teach to limit mouth opening that can be performed in the tongue up position
• teach lateral pole palpation
• isometric exercies
• address muscle weakness
• mandibular muscle relaxation

Question 22

hypomobility intervention

Answer 22

mobilize

• manual mobilization
• self-mobilization
• intraoral appliance
• stretching