NEET MDS Quiz - Practice Test

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

Option 1

Option 2

Option 3

Option 4

📝 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

Option 1

Option 2

Option 3

Option 4

📝 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

Option 1

Option 2

Option 3

Option 4

📝 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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