CDT Dental Anatomy & Morphology Understanding 2

Question 1

Which cusp of the maxillary first molar is the smallest and located on the distolingual aspect?

Accepted Answer

Cusp of 5th

Answer

The fifth cusp of the maxillary first molar, sometimes called the cusp of 5 or tubercle of Carabelli's counterpart, is located on the distolingual surface and is the smallest cusp.

Question 2

The triangular ridge of a cusp runs in which direction?

Accepted Answer

From the cusp tip toward the central groove

Answer

A triangular ridge descends from the tip of a cusp toward the central developmental groove of the tooth.

Question 3

Which permanent tooth has a prominent lingual ridge dividing its lingual surface into two fossae?

Accepted Answer

Maxillary canine

Answer

The maxillary canine has a prominent lingual ridge that divides the lingual surface into mesiolingual and distolingual fossae.

Question 4

The contact area of anterior teeth is located closest to which region?

Accepted Answer

Incisal third of the crown

Answer

Contact areas of anterior teeth are located in the incisal third of the crown, near the incisal edge.

Question 5

Which mandibular premolar most closely resembles a canine in its occlusal morphology?

Accepted Answer

Mandibular first premolar

Answer

The mandibular first premolar has a dominant buccal cusp and a small, nonfunctional lingual cusp, giving it a canine-like appearance from the occlusal view.

(CDT) Certified Dental Technicians Practice Test

(CDT) Certified Dental Technicians Practice Test

CDT Dental Anatomy & Morphology Understanding 2