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NEET MDS Quiz - Practice Test

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dental anatomy - 3 Questions

1
Dental Anatomy

Number of dentinal tubules per mm2 near pulp vs near DEJ:
1). Equal
2). More near pulp (45,000-65,000/mm2) vs near DEJ (15,000-20,000)
3). More near DEJ
4). No tubules near DEJ

📝 Explanation:

Tubule density and diameter decrease peripherally. Near the pulp, the diameter is 2.5-3 microns, and near the DEJ it is 0.8-1 micron. This explains greater sensitivity near the pulp and higher permeability, which is a basis for dentin bonding challenges.

2
Dental Anatomy
A permanent tooth erupting in the mouth of an 11 years old child is most likely
1. maxillary lateral incisor
2. mandibular second bicuspid
3. maxillary third molar
4. rnandibular central incisor

📝 Explanation:

A permanent tooth erupting in the mouth of an 11 years old child is most likely mandibular second bicuspid

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

📝 Explanation:

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

🎉 Quiz Completed!

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