Surgical Options in TMD

Question 1

List examples of TMJ diseases (6)

Answer 1

TMJ dysfunction
Osteo-arthritis
Jaw dislocation
Ankylosis
Tumours
Rheumatoid arthritis

Question 2

Components of TMJ dysfunction

Answer 2

Muscular
Mechanical
Psychological
trauma

Question 3

Function of a bite appliance for TMD (3)

Answer 3

Eliminates occlusal interference
Prevents joint head from rotating so far posteriorly in the glenoid fossa
Reduces loading on TMJ

Question 4

Radiographic investigations for TMD

Answer 4

Arthogram
MRI

Question 5

Intra/post op complications with arthroscopy (5)

Answer 5

Middle ear perforation
Glenoid fossa perforation
Broken instruments
Infection
Haemorrhage

Question 6

Indications for TMJ reconstruction (3)

Answer 6

1. Joint destruction
2. Ankylosis
3. Tumours

Question 7

List the ankylosis classifications for TMJ (4)

Answer 7

I - flattening of condyle, little joint space

II - bony fusion at outer edge of articular surface

III - marked fusion bone between upper part of ramus + zygomatic arch

IV - entire joint replaced by mass of bone