MDS PREP
Which of the following is NOT a component of a dental surveyor?
1) Base
2) Vertical arm
3) Toothbrush holder
4) Surveying arm
Prosthodontics
Answer: 3
A dental surveyor consists of components like a base, vertical arm, horizontal arm, and surveying arm, but it does not include a toothbrush holder.
Which of the following factor(s) you would like to consider for constructing a CD for diabetic patient (any medically compromised person)
1. Maximum extension of the denture base within limits
2. Use of selective or non-pressure impression techniques
3. Narrow occlusal table
4. All of the above
Prosthodontics
Answer: 4
Which of the following factor(s) you would like to consider for constructing a CD for a diabetic patient: all of the above.
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.
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.
Proximal surface calculus is removed by
1. Push motion with scales
2. Push motion with chisel
3. Pull motion with file
4. Pull motion with scales
Prosthodontics
Answer: 2
Proximal surface calculus is removed by push motion with chisel.
Xerostomia is seen in all of the patients except (or) Reduction of salivary flow is not seen in
1. Parkinsonism
2. Phenothiazine therapy
3. Patients receiving radiation therapy
4. Early diabetic patient
Prosthodontics
Answer: 1
Xerostomia is seen in all of the patients except Parkinsonism.
Posterior palatal seal is recorded when the head is bent at
1. 30 degree
2. 150 degree
3. 60 degree
4. 45 degree
Prosthodontics
Answer: 1
Posterior palatal seal is recorded when the head is bent at 30 degrees.
Articulators are classified into arbitrary positional and functional by
1. Beak
2. Posell
3. Boucher
4. Thomas
Prosthodontics Answer: 3
Articulators are classified into arbitrary positional and functional by Boucher.
Arbitrary positional articulators hold the mandible in a pre-determined, fixed position that does not necessarily represent the patient's true centric relation or functional movements.
Functional articulators, on the other hand, aim to simulate the patient's individual centric relation and dynamic movements of the mandible, allowing for a more accurate representation of the patient's actual occlusion. Boucher's classification system is based on the type of articulation and the way it records and transfers the patient's jaw movements to the dental casts.