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NEET MDS Quiz - Practice Test
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Practice Test

Prosthodontics - 3 Questions

1
Prosthodontics
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

📝 Explanation:

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.

2
Prosthodontics
Occlusal rims for making the jaw relations aids in all of the following except 
 1. Determination of the centric relation
 2. Determinatin of the overjet
 3. Orientation of plane of occlusion or Camper"s line
 4. Estimation of freeway space

📝 Explanation:

Occlusal rims for making the jaw relations aid in all of the following except estimation of freeway space.

3
Prosthodontics
The purpose of plane of orientation is 
 1. To serve as a guide in establishing occlusal plane
 2. To aid in measuring height and length of posterior teeth
 3. Both A and B
 4. None of the above

📝 Explanation:

The purpose of the plane of orientation is to serve as a guide in establishing the occlusal plane.

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