Each of the following is evident on a maxillary first premolar EXCEPT one.Which one is the EXCEPTION?

Question

Quizplus · Accepted Answer

The maxillary first premolar has only two cusps,one lingual and one buccal.It is the mandibular second premolar that can have three cusps,with the two lingual cusps often described as small and afunctional.The maxillary first premolar is readily identified by the mesial marginal groove,which extends from the mesial marginal ridge cervically.Also apparent from the mesial aspect is the mesial developmental depression,located cervical to the contact area.This tooth has a mesial marginal ridge as well as a strong distal marginal ridge.

Each of the Following Is Evident on a Maxillary First