Occlusion and TMD

Question 1

What are the 2 basic types of TMD?

Answer 1

Myogenous TMD = Muscle related

Arthogenous TMD = Joint related

Question 2

What are the 6 Cardinal criteria to be considered for diagnosis of TMD?

Answer 2

1. Pain
2. Limitation of function
3. Limitation of Movement
4. Physical changes
5. Altered jaw realtionships
6. Temporomandibular sounds that have been increasing in intensity and frequency.

Question 3

True or false, TMD is disease that has a multifactorial editology.

Answer 3

True

Question 4

The etiological factors of TMD can be classified into what 3 types of factors?

Answer 4

1. Predisposing factors = increase risk. (systemic, occlusal, loss of posterior teeth.
2. Initiating factors = Cause TMD. (Trauma, parafunctional habits.
3. Perpetuating Factors = enhance progression of TMD.
   (Behavioral, social or emotional stress)

Question 5

What are the 5 factors associated with TMD?

Answer 5

1. Occlusal Condition
2. Trauma
3. Emotional stress
4. Deep pain input
5. Parafunctional activites

Question 6

Problems in bringing the teeth together into MI are reflected in the _______.

Answer 6

Muscles

Question 7

One teeth are in occlusion, problems in loading the masticatory structures are reflected in the ______.

Answer 7

Joints

Question 8

What are the parafunctional activities of the masticatory system?

Answer 8

Diurnal parafunctional activity

• Clenching & grinding
• Cheek and tongue biting
• finger and thumb sucking

Nocturnal parafunctional activity
- bruxing

Question 9

If occlusal interferences are not related to TMD symptoms, what should you do?

Answer 9

Refer the patient

Question 10

Prosthodontic treatment in TMD patients should only be carried out when?

Answer 10

AFTER reversible therapy has resulted in relief of pain and the normalization of function. (Makes sense because you cannot adjust prosthodotic work to “Normal” until they have a healthy “Normal” to adjust to.)