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NEET MDS Quiz - Practice Test

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Practice Test

Conservative Dentistry - 3 Questions

1
Conservative Dentistry
All of the following are true of metal ceramic crown preparation on anterior tooth except
1) Adequate incisal reduction
2) Sharp incisal line angles
3) Both A and B
4) None of the above

πŸ“ Explanation:

A metal ceramic crown preparation on an anterior tooth requires smooth, rounded line angles to ensure proper fit, strength, and aesthetics, and to avoid stress concentrations in the ceramic. 


Adequate incisal reduction (around 2 mm) is necessary to provide sufficient space for both the metal coping and the ceramic layer, which is a true requirement.

2
Conservative Dentistry
The main disadvantages of composites of not being recommended for class II posterior restorations 
 1. Colour matching is not good
 2. Lacks sufficient strength
 3. Occlusal wear
 4. Frequent fractures at the isthmus

πŸ“ Explanation:

One of the main disadvantages of composite materials in Class II posterior restorations is their susceptibility to occlusal wear, which can compromise the longevity of the restoration.

3
Conservative Dentistry
The property of the gold that allows it to be burnished
1) Surface hardness
2) Percentage elongation
3) Coefficient of thermal expansion
4) Malleability

πŸ“ Explanation:

Burnishing is the process of polishing a material by rubbing its surface with a hard, smooth tool.

Gold can be burnished because it is highly malleable — meaning it can be deformed, spread, or smoothed without cracking.

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