DMD Oral Anatomy & Physiology 2

Question 1

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

Accepted Answer

Maxillary canine

Answer

The maxillary canine has the longest root of any permanent tooth, giving it excellent anchorage.

Question 2

The cusp of Carabelli, when present, is located on which cusp of the maxillary first molar?

Accepted Answer

Mesiolingual

Answer

The cusp of Carabelli is a fifth cusp found on the lingual surface of the mesiolingual cusp.

Question 3

Which permanent tooth most commonly has two roots, one buccal and one lingual?

Accepted Answer

Maxillary first premolar

Answer

The maxillary first premolar is usually bifurcated into buccal and lingual roots.

Question 4

The most common occlusal groove pattern of the three-cusp form of the mandibular second premolar is:

Accepted Answer

Y pattern

Answer

The three-cusp mandibular second premolar shows a Y-shaped groove pattern, while the two-cusp form shows H or U patterns.

Question 5

The oblique ridge of the maxillary first molar connects which two cusps?

Accepted Answer

Mesiolingual and distobuccal

Answer

The oblique ridge runs from the mesiolingual cusp to the distobuccal cusp.

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