Midterm Flashcards
Diff between support, stability, and retention?
Support: resistance to vertical movement to TOWARD underlying tissues
Stability: resistance to horizontal /lateral or rotational movements
Retention: resistance to displacement of denture base away from the ridge
Useful life of a set of dentures
7-10 years
Natural maxillary bearing area is ____ times larger than the mandibular bearing area
4x
3rd point of reference for hanau facebow
infraorbital notch
For pt with poor neuromuscular control and severely absorbed ridge, which scheme will be used?
Monoplane
The major drawback for monoplane is…
esthetics
4 reasons to remove the maxillary torus…
- encroach in the midline
The best way to pick teeth based on the form of the face is ….
geometric
What is the sequence for selecting teeth?
- shade
- size
- mold
What makes denture teeth look more natural?
incisal edge of maxillary teeth follow the lower lip line
What is the best way to avoid inflammation of the oral tissue due to an ill fitting denture before an appointment?
Remove the denture 24 hrs before the appointment.
What are the 7 anatomical marks required to be in a maxillary impression?
- Residual ridge
- Buccal and labial vestibules
- frenal attachments
- fovea palatinae and vibrating line
- palate
- tuberosities
- hamular notches
What are the 8 anatomical marks required to be in a mandibular impression?
- residual ridge
- retromolar pads
- buccal shelf areas
- external oblique ridges
- frenal attachments
- retromylohyoid spaces
- alveololingual sulcus
- labial and buccal vestibules
What distance between the retromolar pads and the max tuberosity requires surgical reduction?
2 mm
What is the most accurate repeatable mandibular position?
Centric Relation
Main purpose of posterior palatal seal?
Denture retention
The main constituent in the irreversible hydrocolloid is…
diatomaceous earth
How to you get the border molding for alveolarlingual sulcus?
move the tongue
What determines the distal buccal corner of the mandibular denture?
masseter
what helps form the distal lingual corner of the mandibular denture?
pharyngeal constrictor
what happens if the denture base is short of the retromolar pad?
severe absorption of the alveolar ridge
What technique does UMKC use for taking edentulous impressions?
selective pressure
Why do we ask the patient to swallow when recording the OVD?
the teeth touch during the swallowing process
What position is where teeth rest but likely do not touch?
PRP
What sound is used to check the interocclusal dimension?
sibilant sound
What is the purpose of marking the vibrating line?
determining the posterior border of the denture base
