CDT Dental Anatomy & Morphology Understanding 3

Question 1

In permanent dentition, which tooth has the longest root relative to crown length?

Accepted Answer

Maxillary canine

Answer

The maxillary canine has the longest root of any tooth in the permanent dentition, contributing to its stability and anchorage value.

Question 2

Which surface of the mandibular first molar contains the distal pit?

Accepted Answer

Occlusal surface near the distal marginal ridge

Answer

The distal pit of the mandibular first molar is located on the occlusal surface adjacent to the distal marginal ridge.

Question 3

Which feature distinguishes the maxillary right central incisor from the left when viewed from the facial aspect?

Accepted Answer

The distoincisal angle is more rounded than the mesioincisal angle

Answer

On maxillary central incisors, the mesioincisal angle is sharp and nearly 90°, while the distoincisal angle is more rounded, helping to distinguish left from right.

Question 4

What is the developmental groove that separates the mesiobuccal and distobuccal cusps on the mandibular first molar called?

Accepted Answer

Buccal groove

Answer

The buccal groove of the mandibular first molar separates the mesiobuccal and distobuccal cusps on the buccal surface.

Question 5

Which of the following best describes the root trunk?

Accepted Answer

The undivided portion of the root below the cervical line before furcation

Answer

The root trunk is the undivided section of a multi-rooted tooth's root structure that exists between the cervical line and the furcation.

(CDT) Certified Dental Technicians Practice Test

(CDT) Certified Dental Technicians Practice Test

CDT Dental Anatomy & Morphology Understanding 3