MDS PREP
Mention the blood supply to the flap that has been used to close an oro antral fistula in the area of tooth
1. Nasopalatine
2. Greater palatine
3. Posterior superior alveolar
4. Facial
The blood supply to the flap that has been used to close an oroantral fistula in the area of tooth is greater palatine.
Porosity occuring in the bulky portions of the heat-cured acrylic complete dentures is due to
1) Insufficient pressure application during packing
2) Time lag between packing and curing
3) Directly placing the packed resin in water at 100 degree
4) Using a fluid pour technique
Prosthodontics
Answer: 3
Porosity in heat-cured acrylic dentures can occur due to several factors, but the most significant cause in this context is the direct placement of the packed resin in water at high temperatures (100 degrees Celsius). When the packed resin is subjected to such conditions, it can lead to rapid polymerization and the formation of bubbles or voids within the material, resulting in porosity. This is because the heat causes the monomer to vaporize, and if the vapor cannot escape, it leads to trapped air pockets.
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.
Instructing the patient to say "ah" with short vigogous bursts will help in visualizing
1. Soft palate
2. Posterior vibrating line
3. Anterior vibrating line
4. Junction of hard and soft palate
Prosthodontics
Answer: 3
Instructing the patient to say "ah" with short vigorous bursts will help in visualizing the anterior vibrating line.
The effect of saliva on the denture prognosis
1. No effect
2. Affects denture retention
3. Tissue conditioners are indicated when there is reduction in salivary flow
4. None of the above
Prosthodontics
Answer: 2
The effect of saliva on denture prognosis affects denture retention.
According to Monson’s spheric theory of occlusion, each cusp and incisal edge conforms to a segment of the sphere, 8 inches in diameter, with its center at the
1. sella
2. lambda
3. glabella
4. bregma
Prosthodontics
Answer: 3
According to Monson’s spheric theory of occlusion, each cusp and incisal edge conforms to a segment of the sphere, 8 inches in diameter, with its center at the glabella.
Primary stress bearing area in maxillary complete denture is
1. Anterior palate
2. Buccal sulcus areas
3. Edentulous ridges
4. Posterior palatal area
Prosthodontics
Answer: 3
The primary stress-bearing area in maxillary complete denture is the edentulous ridges.
The precision attachment which derives its retention from within the root, in
which a female sleeve is cemented in the root and the male portion is a nylon
post and ball head, is the
1. Zest anchor
2. Ackermann joint
3. Doder attachment
4. Quinlivan attachment
Prosthodontics
Answer: 1
Explanation: The Zest anchor is a type of precision attachment used in dental prosthetics that provides a secure connection between the prosthesis and the remaining tooth structure. It utilizes a female component cemented into the root and a male component that fits into it, allowing for a stable and retentive connection. The other options do not describe this specific mechanism.<br />