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NEET MDS Quiz - Practice Test
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Practice Test

Conservative Dentistry - 3 Questions

1
Conservative Dentistry
A proximal carious lesion in a radiograph is
1) Usually larger than clinically
2) Smaller than clinically
3) Same as clinically
4) An incipient lesion

📝 Explanation:

Proximal carious lesions often appear smaller on radiographs than they are clinically due to the limitations of radiographic imaging.

2
Conservative Dentistry
Initial marginal adaptation is best for the following materials
1) Amalgam
2) Acid etched composites
3) Glass ionomer
4) Unfilled resins

📝 Explanation:

Marginal adaptation refers to how well a restorative material seals and adapts to the cavity margins, preventing microleakage.

Acid‑etched composites bond micromechanically to enamel and dentin after etching, giving excellent initial marginal adaptation.

Amalgam: Relies on mechanical retention, not bonding, so marginal adaptation is poorer initially.

Glass ionomer: Bonds chemically to tooth structure, but its initial adaptation is not as precise as acid‑etched composites.

Unfilled resins: These shrink considerably on polymerization, leading to poor marginal adaptation.

3
Conservative Dentistry
Which of the following is the functionally generated occlusal registration in an indirect gold casting technique
1) Centric relation
2) Anatomic registration
3) Restration of the envelope of occlusion
4) Static registration of dynamic occlusion

📝 Explanation:

In indirect gold casting techniques, occlusal registration is crucial for ensuring that the final restoration fits properly in the patient's occlusion. "Static registration of dynamic occlusion" refers to capturing the occlusal relationship when the patient is in a static position, which is essential for creating a functional restoration.

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