Edentulous Challenge Flashcards
Artificial teeth rest on ____ membranes
Mucous
Pressure on mucosa causes ____ and ____
soreness and resorption
Complete dentures ____ in relation to the underlying bone during function
move
More movement causes more _____ and _____
soreness and resporption
Resiliency of tissue and instability of the dentures causes ________
denture movement
Almost all principles of complete denture fabrication hae been formulated to decrease ______ of the dentures or to minimize _____ transmitted to supporting structures
Movement; forces
in the edentulous state, there are few ______ left. The tissues where they rest will change progressively and irreversibly
Natural adaptive mechanisms
______ is resistance to vertical movement toward the underlying tissues
Support
Dentin, cementum, alveolar bone, and PDL serve as ____ for natural dentition
support
How much support is there in each arch of the natural dentition?
45 cm2
How much support is there in the maxillary arch for complete denture?
23 cm2
How much support is there in the mandible for complete denture?
12 cm2
______ says that living bone responds to functional stress by depositing bone in areas of stress
Wolff’s law
For an edentulous patients, there is _____ adaptation to functional stress on alveolar bone
little
In complete denture wearers, the mean reduction in anterior mandibular ridge is ______ times that of the maxillary ridge
4 times
T/F: Wearing of dentures is almost always accompanied by an undesirable loss of bone
True
T/F: Dentures must be removed for 8 hours a day to minimize residual resorption
True
Record tissues at rest, extend denture base to use maximum support area, and placement of pressure on those tissues best able to tolerate pressure outline proper _____ techniques
Proper impression techniques
Should anterior teeth contact in centric relation closure for complete dentures?
No!
Is bone a static tissue?
No
______ and equilibration at delivery to reduce occlusal discrepancies to reduce pressure on residual ridges
Clinical remount
____ ridge is partly covered by a layer of cortical bone after teeth are extracted
Maxillary
____ ridge: crest remains spongy, trabeculated and not very resistant to resorption
Mandibular
________ of the mandible is the primary denture support area on the mandibular arch
buccal shelf
____ principle: decrease the pressure per unit area by extending the denture base to cover the max area within physiologic tolerance
Snowshoe principle
More saliva contact leads to more ________
contact adhesion
Proper peripheral extension leads to ______
good border seal
_____ is resistance to dislodgement/ movement away from the foundation
Retention
Quantity and quality of _____ affect denture retention
Saliva
______: dryness that presents much difficulty for denture wearers- discomfort, ulcerations, retention loss, and chewing problems
Xerostomia
Attraction of unlike molecules for each other
Adhesion
The amount of ____ attributable to adhesion is directly proportional to the wettability of the denture base material, to the area covered by the denture base, and to the viscosity of the saliva
Retention
_____ is resistance to movement in the horizontal plane/ resistance to rotation/ resistance to lateral movement
Stability
The shape of alveolar ridges, size of alveolar ridges/vestibular depth, flange length and shape, and intimate fit of prosthesis are factors of ____
Stability
Lab tech’s feeling that they should be allowed to bypass the dentist and deal directly with the public
Denturism
Are dentures substitutes for natural teeth?
No
Are dentures substitutes for no teeth?
Yes
