1/24: Interocclusal Recoeds

Question 1

What are two types of interocclusal records?

Answer 1

1. Centric relation
2. Maximum intercuspation

Question 2

Answer 2

Centric relation
There is a 10mm posterior to anterior slide

Question 3

What is a hinge axis?

Answer 3

A hypothetical line through the two mandibular condyles around which the mandible may rotate

Question 4

What does criteria for optimum functional occlusion refer to?

Answer 4

The relationship of the max and mandibular teeth when they are in functional contact during activity of the mandible

Question 5

What does unilateral eccentric contact suggest?

Answer 5

Laterotrusive contacts (working contact) as well as protrusive contacts should occur only on the anterior teeth

Question 6

If the structures of the masticatory system are functioning efficiently and without pathology, the occlusal configuration is considered to be _____ and _______ regardless of specific tooth contacts

Answer 6

Physiologic; acceptable

Question 7

When the elevator muscles (masseter, media pterygoid, and temproalis) function, their contraction raises the mandible such that contact is made and force is applied to the skull in three areas:

Answer 7

The two temporomandibular joints (TMJs) and the teeth

Question 8

What does centric occlusion refer to?

Answer 8

1. The maximal intercuspation of the teeth
2. The relationship of the mandible to the maxilla when the teeth are in maximum occlusal contact, irrespective of the position or alignment of the condyle-disk assembles

Question 9

What is centric relation considered to designate?

Answer 9

The position of the mandible when the condyles are in an orthopedically stable position

Question 10

The most orthopedically stable joint position is when the condyles are located in the

Answer 10

Most superoanterior position in the articular fossae, fully seated and resting against the posterior slopes of the articular eminences

Question 11

What is centric relation?

Answer 11

Maxillomandibular relationship in which the condyles articulate with the thinnest avascular portion of their respective disks with the complex in the anteriosuperior position against the shapes of the articular eminences

Question 12

Centric relation is independent of _________

Answer 12

Tooth contact

Question 13

Centric relation is considered a _________ and _________ reference position

Answer 13

Reliable; reproducible

Question 14

What is centric relation and retruded contact position used for?

Answer 14

Restorative procedures all the teeth must be restored or reshaped

Question 15

What is centric relation good for?

Answer 15

Diagnostic casts to evaluate occlusal relationships

Question 16

Why are retrodiscal tissues not anatomically structured to accept force?

Answer 16

They are highly vascularized and well supplied with sensory nerve fibers
When force is applied to this area, there is great potential for eliciting pain and/or causing breakdown

Question 17

What is the articular disc composed of?

Answer 17

Dense fibrous connective tissue devoid of nerves and blood vessels

Question 18

What is the purpose of the articular disc?

Answer 18

Separate, protect, and stabilize the condyle in the mandibular fossa during functional movements

Question 19

What are the muscles that stabilize the TMJs?

Answer 19

Elevators

Question 20

What is referred to as the length of the face?

Answer 20

Vertical dimension
- The distance between two selected points, one on the fixed member (nose tip) and one on the movable member (chin point)

Question 21

What is vertical dimension maintained by?

Answer 21

The occlusion of the teeth or the balanced tonic contraction of the opening and closing muscles of mandibular movements

Question 22

What is the definition of vertical dimension of rest?

Answer 22

Vertical separation of the jaws when the opening and closing muscles of the mandible are at rest in tonic contraction

Question 23

What is tactile sense?

Answer 23

Where patient feels most comfortable

Question 24

What are phonetics?

Answer 24

Repeat the letter “mmm” and releax