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Which primary tooth has the longest duration of function?

 # Which primary tooth has the longest duration of function?
A. Mandibular canine
B. Maxillary canine
C. Mandibular second molar
D. Maxillary second molar



The correct answer is B. Maxillary canine.

Deciduous maxillary canine has the longest duration of function and is the last tooth to shed off owing to its long root.

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