MDS PREP
Most accurate reproducible relationship for recording jaw relation is
1. Physiologic rest position
2. Centric occlusion
3. Centric relation
4. Both B and C
Prosthodontics
Answer: 3
Most accurate reproducible relationship for recording jaw relation is centric relation.
Of the four factors affecting balanced occlusion in complete dentures, which of the following can be altered by only a slight amount because of wide limitations of esthetics and physiologic factors?
1. Condylar inclinations
2. Compensating curve
3. Incisal guidance
4. Cuspal inclinations
Prosthodontics
Answer: 3
Of the four factors affecting balanced occlusion in complete dentures, which of the following can be altered by only a slight amount: incisal guidance.
What is the purpose of using undercut gauges in dental surveying?
1) To identify the amount of retentive undercut
2) To measure the size of the cast
3) To contour wax patterns
4) To clean the surveyor
Prosthodontics
Answer: 1
Undercut gauges are specifically designed to measure the amount of retentive undercut available on the cast.
Which material is carried in a custom tray?
1. High fusing compound
2. Reversible hydrocolloid
3. Metallic oxide paste
4. Irreversible hydrocolloid
Prosthodontics
Answer: 3
Which material is carried in a custom tray: metallic oxide paste.
When recording jaw relations, the danger of displacing the baseplates can be
minimized by
1. fabricating wax occlusal rims
2. lining the baseplate with acrylic resin
3. fabricating compound occlusal rims
4. lining the baseplate with zinc oxide-eugenol impression paste
Prosthodontics
Answer: 4
Explanation: Lining the baseplate with zinc oxide-eugenol impression paste
provides a more stable and accurate fit during jaw relation records. This
material can help capture the contours of the underlying tissues and minimize
movement of the baseplate, thus reducing the risk of displacing it during the
recording process. The other options may not provide the same level of
stability.
Incorporation of peripheral seal in an impression is necessary to obtain
1. Stability
2. Functionally moulded periphery
3. Harmonious occlusion
4. Posterior palatel seal
Prosthodontics
Answer: 2
Incorporation of peripheral seal in an impression is necessary to obtain functionally moulded periphery.
In primary impression the stock tray should be................mm larger than ridge
1. 2
2. 4
3. 6
4. 8
Prosthodontics
Answer: 3
In primary impression, the stock tray should be 6 mm larger than the ridge.
If freeway space is obliterated, it would result in (or) Increased vertical dimension at occlusion (VDO) results in
1. Improper aesthetics
2. Clicking sounds of the dentures
3. Trauma to the underlying ridges
4. All of the above
Prosthodontics
Answer: 4
If freeway space is obliterated, it would result in all of the above: improper aesthetics, clicking sounds of the dentures, trauma to the underlying ridges.