MDS PREP
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.
All of the following landmarks are included while making a postdam for maxillary arch except
1. Pterygomaxillary notch
2. Hamular process
3. Fovea palatina
4. Vibrating line
Prosthodontics
Answer: 2
All of the following landmarks are included while making a postdam for maxillary arch except hamular process.
When determining the posterior limit of the maxillary denture, which of the following in on the posterior border
1. Hamular notch
2. Fovea palatine
3. Vibrating line
4. Hamular process
Prosthodontics
Answer: 1
When determining the posterior limit of the maxillary denture, the hamular notch is on the posterior border.
Excessive vertical dimension (decreased interocclusal distance) results in
1. Improper retention of the denture
2. Senile appearance of face
3. Sagging of the corners of the mouth
4. Trauma to the residual ridges
Prosthodontics
Answer: 4
Excessive vertical dimension (decreased interocclusal distance) results in trauma to the residual ridges.
Which of the following implant materials density equals that of the alveolar bone
1) Chromium-cobalt
2) Titanium alloy
3) Stainless steel alloy
4) Bioglass
Prosthodontics
Answer: 2
Titanium alloys are commonly used in dental implants due to their favorable properties, including biocompatibility and mechanical strength. The density of titanium alloys is relatively close to that of human alveolar bone, which helps in achieving a good integration (osseointegration) between the implant and the bone. Other materials listed, such as chromium-cobalt and stainless steel alloys, have different densities and are not as compatible with bone in terms of density and biological response. Bioglass, while biocompatible, is not typically used as a structural implant material in the same way as titanium.
Muscles involved in centric relation
1. Temporalis and masseter
2. Medial and lateral pterygoids
3. Temporalis and lateral pterygoid
4. None of the above
Prosthodontics
Answer: 1
Muscles involved in centric relation are temporalis and masseter.
All are consequences of edentulism except
1. Prognathic appearance
2. Thinning of lips
3. Decreased length of lip
4. Increase in columella-philtrum angle
Prosthodontics
Answer: 3
All are consequences of edentulism except decreased length of lip.
The appropriate shape of a rest for a canine tooth is:
1) Full moon shaped
2) Half moon shaped
3) Half pear-shaped
4) None of the above
Prosthodontics Answer: 2
The half moon shape is ideal for canine rests as it provides adequate support and stability for the removable partial denture.