NBDE Part 1 – Dental Anatomy And Occlusion Questions With Answer Keys

Question 16: Normally in the posterior teeth more occlusal surface is seen from the distal aspect due to the presence of high mesial marginal ridge EXCEPT in which of the following tooth?

A. Maxillary first premolar

B. Mandibular first premolar

C. Maxillary second premolar

D. Mandibular second premolar

Answer & Explanation

Answer: [B]


Question 17: Which of the following statement is CORRECT

  1. Lateral curve involves the teeth anterior to the premolars
  2. It has its convexity facing downwards

A. Both statements are correct

B. Both statements are incorrect

C. The first statement is correct while the second statement is incorrect

D. The first statement is incorrect while the second statement is correct

Answer & Explanation

Answer: [C]


Question 18: Which of the following is considered as the critical period for tetracycline discoloration?

A. For primary incisors 4 months in utero to 3 months postpartum

B. For primary canines 5 months in utero to 9 months postpartum

C. For permanent anterior 4 months postpartum to about 7 years of age

D. All of the above

Answer & Explanation

Answer: [D]


Question 19: Which of the following single rooted tooth can also have two roots more commonly than other options?

A. Mandibular first premolar

B. Mandibular canine

C. Mandibular incisor

D. Maxillary incisor

Answer & Explanation

Answer: [A]


Question 20: In ideal centric occlusion which of the following tooth does not have any contact with its opposing tooth?

A. Premolars

B. Molars

C. Incisors

D. None of the above

Answer & Explanation

Answer: [C]

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