NEET MDS Quiz - Practice Test

1

Dental Anatomy

Which of the following permanent maxillary molar teeth normally has four root canals? 1. First molar 2. Second molar 3. Third molar 4. None of theabove

Option 1

Option 2

Option 3

Option 4

📝 Explanation:

permanent maxillary First molar teeth normally has four root canals

2

Dental Anatomy

When calcospherites fail to fuse during calcification of dentin matrix then
1 Interglobular dentin is formed
2 Dead tracts are found in formed dentin
3 Irregular dentin results
4 None

Option 1

Option 2

Option 3

Option 4

📝 Explanation:

Interglobular Dentin:
Sometimes, mineralization of dentin begins in small globular areas that fail to coalesce into a homogenous mass. This results in�zones of hypomineralization between the globules.
These zones are known as globular dentin or interglobular spaces. Thus, demonstrating defect of mineralization and not of matrix�formation, the dentinal tubules pass uninterruptedly through interglobular dentin.

3

Dental Anatomy

How soon after the eruption of permanent tooth is the apex usually fully developed? 1. Immediately 2. 3-6 months 3. 2-3 years 4. 6-9 years

Option 1

Option 2

Option 3

Option 4

📝 Explanation:

Afet tooth eruption in permanent teeth the apex is fully developed after 2-3 years

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