HEAD NECK
ORAL CAVITY AND TONGUE
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Which tooth has the longest root in the maxillary arch?
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Central
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First molar
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Cuspid
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Lateral
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Explanation:
Detailed explanation-1: -The canines (tooth C, H) have a trapezoidal crown with one labial cusp. The labial surface is convex, and the palatal surface is concave. The canines have a single long root and a single root canal. The canine roots are the longest root of all teeth.
Detailed explanation-2: -Canine teeth often have the longest root of all teeth in the human mouth and the last to fully erupt and fall into place; often around age 13.
Detailed explanation-3: -In odontometric studies, the maximum measured lengths of the maxillary canine were 32.0 mm (Black 1902) and 33.3 mm (Bjorndal et al. 1974). The published photograph of the tooth indicates that the crown length was about 11 mm, and the root length was about 26 mm.
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