NEET MDS Quiz - Practice Test

1

Conservative Dentistry

The mesial and distal cavity margins for class V gold restoration�
�1. Should end at the line angles of the tooth
�2. Should be converging
�3. Should extend into the proximal surfaces
�4. All of the above

Option 1

Option 2

Option 3

Option 4

📝 Explanation:

For a class V gold restoration, the mesial and distal cavity margins should end at the line angles of the tooth to ensure proper adaptation and prevent overhangs. This is important for both functional and aesthetic reasons

2

Conservative Dentistry

Gingivally the depth of a class V cavity is�
�1. 0.5-1 mm
�2. 0.75-1 mm
�3. 1-1.25 mm
�4. 2-3 mm

Option 1

Option 2

Option 3

Option 4

📝 Explanation:

Gingivally, the depth of a class V cavity is typically 0.75-1 mm. This depth is sufficient to provide a good bond with the tooth structure and prevent microleakage without causing significant gingival irritation or damage.

3

Conservative Dentistry

In conventional class III amalgam cavity preparation the axial wall in inciso gingival direction should be�
�1. Straight and parallel to the long axis of the crown, deeper incisally than gingivally
�2. Convex and parallel to the long axis of the tooth
�3. Concave and parallel to the incisogingival contour of the tooth
�4. None of the above

Option 1

Option 2

Option 3

Option 4

📝 Explanation:

Explanation:�In a conventional Class III amalgam cavity preparation, the axial wall should be straight and parallel to the long axis of the tooth. This design ensures that the restoration has adequate resistance form and is less likely to dislodge under occlusal forces. The wall being deeper incisally than gingivally helps to maintain the integrity of the tooth structure and provides a stable base for the amalgam restoration.

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