UD1 Some features of enamel surface

Question 1

What are perikymata?

Answer 1

Perikymata is the outward aspect of internal growth increments; the normal transverse wavelike grooves or lines on the external surface of the tooth. They can be lost through tooth wear.

Question 2

What are linear enamel hypoplasia?

Answer 2

A disruption to enamel formation that causes deep grooves to form on the surface of the tooth.

Question 3

What causes linear enamel hypoplasia?

Answer 3

Generally caused by poor nutrition “stressful event” during the development of the tooth. e.g. calium defieincy in childhood while adult teeth are still developing

Question 4

What are mamelons?

Answer 4

elevations in the cutting edge of the newly emerged anterior teeth (incisors) that correspond to their developmental lobes. These in due course wear off to form a flat cutting edge.