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NEET MDS Quiz - Practice Test
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dental anatomy - 3 Questions

1
Dental Anatomy

Which dentin contains fewest tubules?
1). Primary
2). Secondary
3). Tertiary / reparative dentin (osteodentin)
4). Mantle dentin

📝 Explanation:

Tertiary dentin is the least tubular and is sometimes atubular. It may contain cell inclusions.

2
Dental Anatomy
The beginning of active eruption of a human tooth occurs
1. before the root has begun to develop
2. coincidental with the beginning of root formation
3. before the root has begun to develop
4. after one half of the root is formed

📝 Explanation:

The beginning of active eruption of a human tooth occurs after one half of the root is formed

3
Dental Anatomy

Cause of interglobular dentin increased in rickets:
1). Vitamin D deficiency leads to failure of calcospherite fusion
2). Fluoride excess
3). Calcium excess
4). Vitamin A deficiency

📝 Explanation:

Vitamin D deficiency leads to hypomineralization due to a low calcium-phosphate product. Globular mineralization fails, increasing interglobular dentin.

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