Quiz 2 (Review slides 11-21)

Question 1

Protrusive Interferences are potentially observed on the following surfaces and features:

Answer 1

1. Distal marginal ridges of the mandibular posterior teeth

2. Mesial marginal ridges of the Maxillary posterior teeth

Question 2

Upon closure interference with “A” contact, the mandible will do what?

Answer 2

Deviate to the opposite side

• Inner incline of maxillary buccal cusp
• Outer incline of Mandibular buccal cusp

Question 3

Upon closure interference with “B” contact, the mandible will do what?

Answer 3

Will display mandibular deviation to the same side as the interference

• Inner incline of maxillary lingual cusp
• Inner incline of mandibular buccal cusp

Question 4

Initial TMJ Dysfunction: (3)

Answer 4

1. Retrodiscal ligaments
2. Disc morphology changes
3. A slight abnormal translation occurs between the condyle and disc

Question 5

3 Things of etiology for TMD

Answer 5

1. Predisoping factors: These will increase risk
2. Initiating factors: These are responsible for the onset of the disease
3. Perpetuating factors: These will interfere with healing or enhance progression of the disease

Question 6

Five major factors for TMD

Answer 6

Occlusal
Trauma
Emotional Stress
Deep Pain
Parafunction

Question 7

T or F, The etiology of temporomandibular dysfunction is complex and multifactorial

Answer 7

True

Question 8

explain the mitigating factors of extracapsular TMJ problems

Answer 8

Mitigating factors - Anxiety, fatigue, stress, overuse/underuse of jaw, poor sleep, bruxism, altered muscle contraction

Question 9

When pressing on the trigger point designated on the upper portion of the body of the masseter, the trigger is to what?

Answer 9

The maxillary posterior teeth

Question 10

What is the trigger to on the lateral pterygoid

Answer 10

The trigger is to the zygomatic arch and the TMJ

Question 11

Symptoms of Intracapsular TMD

Answer 11

1. Joint sounds
2. Limited opening with a HARD end feel
   
   • Deviation or deflection of mandible
3. Pain during loading of the TMJ
4. Sudden change in a patient’s occlusion

Question 12

When opening the mandible, if ROM is a soft end feel, it most likely what kind of a problem?

Answer 12

Muscle problem (Extracapsular?????)
LOOK OVER SLIDE #20

Question 13

Parafunctional activites and features of occlusion

Answer 13

1. Clenching
2. Bruxism
3. most parafunctional activities occur at a subconscious level
4. Occlusal prematurities do not directly cause bruxing events
5. Emotional stress directly relates to parafunction
6. Medications: Selective Serotonin Reuptake Inhibitors (SSRI) and other antidepressant medications have been linked to increased bruxing