CDT Dental Anatomy & Morphology 2

Question 1

Which cusp of the maxillary first molar is known as the 'cusp of Carabelli' and is considered a non-functional accessory cusp?

Accepted Answer

Mesiolingual cusp

Answer

The cusp of Carabelli is a fifth accessory cusp located on the lingual surface of the mesiolingual cusp of the maxillary first molar.

Question 2

How many roots does a mandibular first molar typically have?

Accepted Answer

Two roots

Answer

The mandibular first molar normally has two roots — one mesial and one distal.

Question 3

The oblique ridge is a landmark unique to which tooth?

Accepted Answer

Maxillary first molar

Answer

The oblique ridge of the maxillary first molar runs diagonally across the occlusal surface from the distobuccal cusp to the mesiolingual cusp.

Question 4

Which permanent tooth has the longest root in the entire dentition?

Accepted Answer

Maxillary canine

Answer

The maxillary canine has the longest root of any tooth in the permanent dentition.

Question 5

What is the name of the ridge that runs cervico-occlusally on the buccal surface of posterior teeth?

Accepted Answer

Buccal ridge

Answer

The buccal ridge is a vertical elevation running cervico-occlusally along the middle of the buccal surface of premolars and molars.

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