Which structure separates primary parts of a crown or root?
A) Marginal ridge
B) Developmental groove
C) Developmental pit
D) Transverse ridge
E) Both b and c

Question

Quizplus · Accepted Answer

Shallow grooves or lines that separate primary parts of the crown or root are called developmental grooves. Marginal ridges are rounded borders of enamel that form mesial and distal shoulders of occlusal and incisal surfaces. Developmental pits are pinpoint holes evident within a fossa or anywhere on a tooth that are not associated with a disease process. A transverse ridge is the union of two triangular ridges, a buccal and a lingual, that cross the occlusal surface of a posterior tooth.

Which Structure Separates Primary Parts of a Crown or Root