Which of the following is an accessory cusp found on a mandibular molar?

# Which of the following is an accessory cusp found on a mandibular molar?

A. Protostylid

B. Cusp of Carabelli

C. Dens Evaginatus

D. Paramolar cusp

The correct answer is A. Protostylid

The protostylid is a supernumerary accessory cusp located on the mesiobuccal surface of mandibular molars, often appearing as a pit, groove, or distinct tubercle that can vary in expression from mild to pronounced. In contrast, the cusp of Carabelli (option B) is an accessory feature on the mesiolingual surface of maxillary first molars; dens evaginatus (option C) typically presents as an occlusal tubercle on premolars (especially mandibular second premolars), though it can rarely affect molars; and the paramolar cusp (option D), also known as Bolk's cusp, is primarily an extra tubercle on the buccal surface of maxillary molars.

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