Maxillo-Mandibular Relationships

Question 1

____ is horizontal and reproducible; tissues at rest

Answer 1

Centric relation

Question 2

The vertical occlusal dimension is about ____ mm

Answer 2

3mm

Question 3

Physiologic resting position subtracted by interocclusal distance equals

Answer 3

Vertical dimension of occlusion

Question 4

____ relationships include: occlusal vertical relations, rest vertical position

Answer 4

Vertical relationships

Question 5

____ relationships include: centric relation (CR), protrusive, R and L lateral

Answer 5

Horizontal relationships

Question 6

____ is defined as the distance between 2 points measured when the occluding members are in contact

Answer 6

Occlusal vertical dimension

Question 7

_____ position is defined as a postural position the mandible assumes when all muscles that close the jaws and all muscle that open the jaws are in a state of minimal contraction sufficient only to maintain posture; no teeth are contacting

Answer 7

Physiologic rest position

Question 8

____ is defined as the distance between 2 selected points measured when the mandible is in its physiologic rest position

Answer 8

Rest Vertical dimension

Question 9

____ is defined as space between the teeth or occluding members when the mandible is in the physiologic rest position

Answer 9

Interocclusal distance

Question 10

_______ = occlusal vertical dimension plus interocclusal distance

Answer 10

Rest vertical dimension

Question 11

Is there one specific way to establish occlusal vertical dimension?

Answer 11

No

Question 12

The following methods are used to establish _____; patient’s old dentures, swallowing threshold, closest speaking space, phonetics (“s” sounds), esthetics, tactile sense, paralleling posterior ridges, pre-existing records, facial measurements

Answer 12

occlusal vertical dimension

Question 13

____ is the closest relationship of the occlusal surfaces and incisal edges of the mandibular teeth to the maxillary teeth during function and rapid speech

Answer 13

Closest speaking space

Question 14

Which measurement should be greater: PRP or OVD?

Answer 14

PRP

Question 15

____ is a horizontal mandibular position at an established vertical dimension; reproducible posterior hinge position of the mandible

Answer 15

Centric Relation

Question 16

____ cast is mounted to the correct axis by a facebow transfer

Answer 16

Maxillary

Question 17

____ cast is mounted in centric relation position to the maxillary cast

Answer 17

Mandibular cast

Question 18

The casts are mounted at the correct ______ distance from each other to allow the teeth to be arranged, bases are placed in mouth and teeth occlude at this ____ dimension

Answer 18

Vertical

Question 19

To make sure the maxillary baseplate stays in place during interocclusal bite registration, sprinkle a small amount of ______ powder on the tissue side of the denture

Answer 19

Denture adhesive powder

Question 20

T/F: Denture adhesive must be removed from cast before placing the record bases on master casts to avoid denture processing errors

Answer 20

True

Question 21

Both rims have a ______ carved in to achieve a useful bite registration; ensures stability in a lateral direction

Answer 21

V-shaped grooves in the molar region

Question 22

the 2 phases of ensuring _____ are Getting entire mandible retruded using bi-manual technique; positioning the condyle-disc assembly in the uppermost anterior position?

Answer 22

centric relation

Question 23

Should contact occur between the wax rims or bases during bite registration?

Answer 23

No

Question 24

T/F: The importance of accurate interocclusal records and accurately mounted casts merit extra time practicing with patient

Answer 24

True

Question 25

Resiliency of the tissues supporting the denture bases, stability and retention of record bases, TMJ and ints neuromuscular mechanism, technique employed in making the records, amount of pressure applied in making the records, and skill of dentist are factors that affect _____ record

Answer 25

Centric relation

Question 26

____ is the instrument that carries the relationship between the maxillae and condyles from the patient to the articulator

Answer 26

Facebow

Question 27

____ facebow uses an arbitrary axis (external auditory meatus) to approximate rotational centers of mandible

Answer 27

Arbitrary facebow

Question 28

_____ facebow uses the transverse hinge axis; used in fixed procedures; locates exact hinge axis points on skin then transfers cast to articulator in accurate relation to these points

Answer 28

Kinematic facebow

Question 29

The purpose of the ____ is to orient the max cast to the articulator in the same relationship to the opening/closing axis of the articulator as exists between the maxillae and the opening/closing axis of the TMJ of the patient

Answer 29

Facebow