Maxillo-Mandibular Relationships Flashcards
____ is horizontal and reproducible; tissues at rest
Centric relation
The vertical occlusal dimension is about ____ mm
3mm
Physiologic resting position subtracted by interocclusal distance equals
Vertical dimension of occlusion
____ relationships include: occlusal vertical relations, rest vertical position
Vertical relationships
____ relationships include: centric relation (CR), protrusive, R and L lateral
Horizontal relationships
____ is defined as the distance between 2 points measured when the occluding members are in contact
Occlusal vertical dimension
_____ 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
Physiologic rest position
____ is defined as the distance between 2 selected points measured when the mandible is in its physiologic rest position
Rest Vertical dimension
____ is defined as space between the teeth or occluding members when the mandible is in the physiologic rest position
Interocclusal distance
_______ = occlusal vertical dimension plus interocclusal distance
Rest vertical dimension
Is there one specific way to establish occlusal vertical dimension?
No
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
occlusal vertical dimension
____ is the closest relationship of the occlusal surfaces and incisal edges of the mandibular teeth to the maxillary teeth during function and rapid speech
Closest speaking space
Which measurement should be greater: PRP or OVD?
PRP
____ is a horizontal mandibular position at an established vertical dimension; reproducible posterior hinge position of the mandible
Centric Relation
____ cast is mounted to the correct axis by a facebow transfer
Maxillary
____ cast is mounted in centric relation position to the maxillary cast
Mandibular cast
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
Vertical
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
Denture adhesive powder
T/F: Denture adhesive must be removed from cast before placing the record bases on master casts to avoid denture processing errors
True
Both rims have a ______ carved in to achieve a useful bite registration; ensures stability in a lateral direction
V-shaped grooves in the molar region
the 2 phases of ensuring _____ are Getting entire mandible retruded using bi-manual technique; positioning the condyle-disc assembly in the uppermost anterior position?
centric relation
Should contact occur between the wax rims or bases during bite registration?
No
T/F: The importance of accurate interocclusal records and accurately mounted casts merit extra time practicing with patient
True
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
Centric relation
____ is the instrument that carries the relationship between the maxillae and condyles from the patient to the articulator
Facebow
____ facebow uses an arbitrary axis (external auditory meatus) to approximate rotational centers of mandible
Arbitrary facebow
_____ 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
Kinematic facebow
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
Facebow
