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NEET MDS Quiz - Practice Test
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Practice Test

Conservative Dentistry - 3 Questions

1
Conservative Dentistry
Surface hardness of the gold foil during condensation
1) Always increases
2) Always decreases
3) Increased followed by a decrease
4) Decreased followed by an increase

πŸ“ Explanation:

The process of condensation (compaction) of gold foil in dentistry involves cold-welding layers of gold to build a solid restoration. As the gold is compacted, a phenomenon known as work hardening occurs, which increases the material's hardness and strength.

2
Conservative Dentistry
The term stepping is associated with
1) Root canal preparation
2) Direct gold condensation
3) Silver amalgam condensation
4) Fracture mandible

πŸ“ Explanation:

The term "stepping" refers to a specific technique used during the compaction (condensation) of direct gold restorations.


 This process involves using a condenser to press the gold material into the prepared cavity, with each succeeding "step" or application of the condenser overlapping the previous one by about half its diameter. 

This systematic, overlapping pattern ensures uniform compaction, reduces voids, and achieves maximum adaptation of the gold to the cavity walls.

3
Conservative Dentistry
Primary determinant of the outline form in class V preparation 
 1. Height of the gingival crest
 2. Extension of the caries
 3. Type of the restorative material
 4. Teeth anatomy

πŸ“ Explanation:

Explanation: The outline form of a Class V cavity preparation is primarily determined by the extent of carious tissue. The goal is to remove all carious dentin while preserving as much healthy tooth structure as possible. The outline form must encompass the entire area affected by caries to ensure that the restoration is effective and durable. Other factors, such as the height of the gingival crest, type of restorative material, and tooth anatomy, may influence the preparation but are secondary to the extent of caries.

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