Moderate

The shallow furrows on the enamel surface, where stria of Retzius end are known as _______________ ?

Correct answer: C. perikymata

A. Cracks
B. Pellicle
C. perikymata
D. Enamel lamellae

Explanation

Perikymata are shallow horizontal grooves or ridges on the enamel surface formed where the striae of Retzius reach the surface. Enamel lamellae are thin developmental defects or cracks extending through enamel, not surface grooves.

Submitted by a TestUstad contributor and published by the TestUstad editorial teamLast updated 18 September 2026

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