Removable prosthodontics and complete dentures Question and answers already passed 2024/2025
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Course
DENTURES,DX AND TX PLANNING
Institution
DENTURES,DX AND TX PLANNING
Removable prosthodontics and complete dentures Question and answers already passed 2024/2025 Removable prosthodontics and complete dentures
Cameo surface
the shiny or polished surface. The portion of the denture you can see. When placed in the patient's mouth can think of as like the outside su...
Removable prosthodontics and
complete dentures
Cameo surface
the shiny or polished surface. The portion of the denture you can see. When
placed in the patient's mouth can think of as like the outside surface.
Intaglio surface
the portion of the denture that is "inside the denture" or is the tissue bearing
surface (it comes in contact with the tissue when placed in patient's mouth).
labial notch of the denture
little notch we can see from the frontal view. The labial frenum is enveloped in
this area.
buccal notch of denture
notches found on the side of the denture where the buccal frenum will be
enveloped.
flanges of denture
extensions of the denture, length. These are the extensions into the vestibule.
,3 main properties to understand when creating a denture
1. support
2. stability
3. retention
support
resistance to forces directed toward the basal tissues, or underlying structures
stability
resistance to dislodgement of an object in a horizontal direction (lateral
direction)
retention
resistance to dislodgement of an object along the path of placement.
What has better support a table or a pile of pillows?
If you have a desk and you try and press an object against the desk or table it
cannot move or displace against the surface of the table. The table has good
support.
If you press an object against a pillow you can place the object deep into the
pillow and there is going to be lots of flex. So the pillow does not have good
support.
,Support depends on what three factors
1. degree of keratinization
2. Amount of Attached mucosa
-With an increase keratinization and amount of attached mucosa then it can
better withstand the forces of mastication.
3. Presence of cortical bone
-presence of cancellous bone can promote more resorption
What might happen to a patient lacking keratinization and attached mucosa
it may lead to the ridge becoming ulcerated very quickly.
What does stability depend on?
it depends on the height of the alveolar ridge
-higher ridge= the prosthesis is less likely to rock and will be more stable. It
won't move laterally as much.
It also can depend on the shape of the arch
-a more square/ rectangular arch is going to be more stable than a more
triangular arch.
what factors affect the stability of a maxillary denture
1. alveolar ridge height
2. presence of well formed tuberosities
3. presence of flabby moveable denture bearing surface.
, What factors affect the stability of mandibular denture
1. Alveolar ridge height
2. Tongue position --> about 30% of patient have a retruded tongue position in
which the tongue goes backward and retrudes so its going to be less stable.
3. floor of mouth contour
4. presence of flabby moveable denture bearing surface tissue.
Class I tongue
stable tongue position
Wright's tongue position
person's tongue is rotruded, not as stable.
glass slab exercise
comparing two slabs stuck together with and without water.
-with water its harder to pull apart.
properties of retention
cohesion, adhesion, contact angle of the denture material, surface tension
(capillary action and atmospheric pressure)
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