Interocclusal Records

Question 1

What are the two types of interocclusal record?

Answer 1

• centric relation
• maximum intercuspation

Question 2

What is the definition of hinge axis?

Answer 2

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

Question 3

What does maximum intercuspation (MI) not allow for?

Answer 3

will not allow complete occlusal evaulation for diagnosis

Question 4

What is maximum intercuspation (MI) practical for?

Answer 4

practical for single unit crowns and simple restorative procedures

Question 5

What is the criteria for optimum functional occlusion?

Answer 5

RELATIONSHIP OF THE MAXILLARY AND MANDIBULAR TEETH WHEN THEY ARE IN FUNCTIONAL CONTACT DURING ACTIVITY OF THE MANDIBLE

Question 6

What is the theory of unilateral eccentric contact?

Answer 6

LATEROTRUSIVECONTACTS (WORKING CONTACTS) AS WELL AS PROTRUSIVE CONTACTS SHOULD OCCUR ONLY ON THE ANTERIOR TEETH

Question 7

What is the theory of dynamic individual occlusion?

Answer 7

focuses on the health and function of the masticatory system and not on any specific occlusal configuration

Question 8

What three spots do the elevator muscles apply force and contact to the skull?

Answer 8

• the two tempormandibular joints
• teeth

Question 9

What is centric occlusion?

Answer 9

1. maximal intercuspation of the teeth
2. relationship of the mandible to the maxilla when the teeth are in maximum occlusal contact, irrespective of the prosition of aligment of the condyle-disk assemblies

Question 10

What is centric relation independent of?

Answer 10

tooth contact

Question 11

Which interocclusal record is considered a reliable and reproducible reference position?

Answer 11

centric relation

Question 12

Why is centric relations described as a ligamentous position?

Answer 12

it is minaly determined by the ligaments of the TMJ

Question 13

What is the definition of centric relation?

Answer 13

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

Question 14

What tissues are not structured to accept force since they are highly vascularized and well supplied with sensory nerve fibers?

Answer 14

retrodiscal tissues

Question 15

The most superior and posterior position of the condyle is or is not a physiologically or anatomically sound position?

Answer 15

IS NOT

Question 16

What is the articular disc of the TMJ composed of?

Answer 16

composed of dense fibrous connective tissue devoid of nerves and blood vessels

Question 17

What is the purpose of the articular disc of the TMJ?

Answer 17

separate, protect, and stabilized the condyle in the mandibular fossa during functional movements

Question 18

What is the vertical dimension?

Answer 18

length of the face (distance between two selected points; one on the nose tip and one on the chin)

Question 19

What is the vertical dimension maintained by?

Answer 19

occlusion of the teeth (VDO) or the balanced tonic contraction of the opening/closing muscles of mandibular movements (VDR)

Question 20

What is the vertical dimension of rest (VDR)?

Answer 20

• The vertical separation of the jaws when the opening & closing muscles of the mandible are at rest in tonic contraction
• It is the length of the face when the mandible is in physiologic rest position

Question 21

How should you determine the vertical dimension of the patient?

Answer 21

tactile sense
phonetics
facial expression
anatomic landmarks