Articulation And Occlusion Lecture 10

Front 1

In a normal TMJ, the articular disc is (behind/in front of/between) the condyle and eminence

Back 1

between

Front 2

In disc dislocation WITH reduction, the condyle is more (anterior/posterior)

Back 2

posterior

Front 3

In disc dislocation WITH reduction, the disc is more (anterior/posterior)

Back 3

anterior

Front 4

Which is also known as "closed lock"?

A. Normal TMJ
B. Disc Dislocation W/reduction
C. Disc Dislocation W/o reduction

Back 4

C. dislocation w/o reduction

Front 5

In disc dislocation without reduction, how does the disc behave?

Back 5

It get "scrunched" by the condyle so the condyle cannot slide underneath

Front 6

In disc dislocation without reduction, you get (less/more) than normal opening

Back 6

less

Front 7

If your right TMJ is in disc dislocation without reduction, then your jaw will move to the (right/left)

Back 7

right

Front 8

If disc dislocation without reduction progresses further, it becomes what?

Back 8

advanced closed lock

Front 9

There is (excessive/no/normal) opening with advanced closed lock

Back 9

normal

Front 10

True or False, all clicking joints eventually become advanced closed lock

Back 10

false

Front 11

What is the term for a clinical description of the condyle as it moves anterior to the crest of the articular eminence?

Back 11

subluxation

Front 12

The following pattern describes what condition?

click-open-close-click

Back 12

dislocated disc

Front 13

The following pattern describes what condition?

open-click-click-close

Back 13

subluxation

Front 14

True or False, subluxation typically does not get much worse

Back 14

True

Front 15

A dentist looks in and sees that a patient's 2nd molar has a broken cusp. This is a (sign/symptom)

Back 15

sign

Front 16

A patient comes in complaining of TMJ pain on the left side. This is a (sign/symptom)

Back 16

symptom

Front 17

By definition, a patient is ALWAYS aware of a (sign/symptom)

Back 17

symptom (by definition, a symptom is patient-reported)

Front 18

An average of __% of the pop. have at least one sign of joint dysfunction

Back 18

75

Front 19

An average of __% of the pop. have at least one symptom of joint dysfunction

Back 19

33

Front 20

Only __ to __% of the pop. requie TMJ treatment

Back 20

5-7%

Front 21

__ to __% of the pop. have asymptomatic TMJ sounds

Back 21

25-35%

Front 22

True or False, all joint sounds should be treated

Back 22

False, only those associated with PAIN

Front 23

__% of silent, asymptomatic joints were found to have disc displacement on arthrograms

Back 23

15%

Front 24

(men/women) have TMJ issues more often

Back 24

women

Front 25

Why do older patients not typically have TMJ issues?

Back 25

They have resolved themselves by the time they are older

Front 26

Only __% of females indicated abuse on health history while __% indicate abuse on anonymous surveys

Back 26

8.5%, 68.9%

Front 27

Only __% of the general female pop. report some type of abuse

Back 27

20%

Front 28

*What are the 7 requirements of optimum occlusion?

Back 28

1. Both the right and left condyles are in a supero-anterior position in fossae.

2. The articular disc is properly interposed.

3. There is even and simultaneous contact of all teeth.

4. Lighter contacts occur on the anterior teeth than on the posterior.

5. Occlusal forces are directed down long axis of teeth.

6. During laterotrusive movement, the mediotrusive side is discluded immediately.

7. During protrusive movement, all the posterior teeth are discluded immediately.