Which Anatomical Landmark Could Make an Incisor More Prone to Dental

Question

Which anatomical landmark could make an incisor more prone to dental caries?
A) Cingulum
B) Lingual pit
C) Mamelons
D) Prominent marginal ridges

Accepted Answer

Of the four selections,only the lingual pit is concave in nature;the remaining selections are primarily convex.Concavities provide ideal nurturing locale for plaque biofilms,primary etiologic factors of dental caries.