As a carious lesion progresses, it takes on a triangular shape with the apex pointing toward the __________________ and the base toward the ___________________.
A) cementoenamel junction, outer surface of the tooth
B) dentinoenamel junction, outer surface of the tooth
C) outer surface of the tooth, cementoenamel junction
D) outer surface of the tooth, dentinoenamel junction

Question

Quizplus · Accepted Answer

As a carious lesion progresses, it begins at the surface and gradually advances towards the dentinoenamel junction (DEJ) where it spreads laterally along the DEJ. This gives the lesion a triangular shape with the apex pointing towards the enamel surface of the tooth and the base towards the DEJ. Therefore, the correct answer is option B.

As a Carious Lesion Progresses, It Takes on a Triangular