MDS PREP
When patient closes in centric occlusion if lower jaw is placed anteriorly in relation to upper jaw, it is called as
1. Normal occlusion
2. Centric occlusion
3. Pre normal occlusion
4. Centric relation
Prosthodontics
Answer: 3
When a patient closes in centric occlusion, if the lower jaw is placed anteriorly in relation to the upper jaw, it is called pre-normal occlusion.
Decreased vertical dimension of occlusion (increased interocclusal space) results in all of the following except
1. Loss of muscle power
2. Sagging of the corners of the mouth
3. Senile appearance
4. Increase in the masticatory efficiency
Prosthodontics
Answer: 4
Decreased vertical dimension of occlusion results in all of the following except an increase in masticatory efficiency.
If the clasp assembly is not being placed on a tooth adjacent to an edentulous
area, the minor connector must
be positioned
1. in the embrasure between two teeth
2. on the lingual surface of the tooth distal to the edentulous space
3. on the lingual surface of the tooth mesial to the edentulous space
4. on any tooth with a convex lingual surface
Prosthodontics
Answer: 1
Explanation: The minor connector should be positioned in the embrasure between
two teeth to provide adequate support and stability for the clasp assembly. This
positioning helps distribute forces evenly and maintains the integrity of the
prosthesis. The other options do not provide the same level of support.
Custom tray is better than stock tray for impression (of crown) due to following reasons except
1. Custom tray is eary to adapt
2. Stock tray may not record full flange
3. Custom tray is cheaper
4. Stock tray can distort easily
Prosthodontics
Answer: 3
Custom tray is better than stock tray for impression (of crown) due to the reason that stock tray may not record full flange.
Retromolar area should be covered in CD or distal extension RPD in order to
1. Provide the better marginal seal
2. To slow down the rate of resorption of alveolar bone in posterior area
3. Derive support from the underlying bone which is resistant to resorption
4. All of the above
Prosthodontics
Answer: 4
Retromolar area should be covered in CD or distal extension RPD in order to derive support from the underlying bone which is resistant to resorption.
Which of the following is an example of static method of recording centric relation?
1. Intraoral records
2. Needle
3. House
4. Paterson
Prosthodontics
Answer: 1
Which of the following is an example of a static method of recording centric relation: intraoral records.
The average biting forces generated the natural dentition and complete
dentures are respectively
1. 200N and 600N
2. 9000 N and 7000 N
3.100N and 30N
4. 600N and 110N
Prosthodontics
Answer: 4
Explanation: Natural dentition can typically withstand average biting forces of
around 600N, which is significantly higher than the 110N that complete dentures
can generally handle. Complete dentures rely on muscular and bony support and
are limited by the resiliency of the soft tissues in the oral cavity.
The most desirable temporary record base for an edentulous patient is the one
made from
1. shellac, reinforced with a 12 gauge stainless steel wire
2 cold cure resin by the sprinkle on method
3. polystyrene in a thermal vacuum machine
4. cold cure resin by the noncompression dough technique
Prosthodontics
Answer: 2
Explanation: The cold cure resin by the sprinkle-on method
provides a stable and accurate temporary record base for edentulous patients.
This method allows for better adaptation to the oral tissues and ensures a more
reliable fit during the recording of jaw relations.