The part of the tooth that shows when someone opens their mouth is the anatomic crown.

Question

Quizplus · Accepted Answer

The anatomic crown is the entire coronal portion of the tooth that is covered by enamel,regardless of whether it is visible in the mouth or not.Unerupted portions of the crown are considered part of the anatomic crown.By contrast,the clinical crown is only that portion visible above the gingiva,and hence the part visible when someone opens his or her mouth.The clinical crown is also described as that portion of the crown that has erupted.

The Part of the Tooth That Shows When Someone Opens