Where are the protective contour ridges located on the buccal and lingual surfaces?

Show Answers

At the midsection of the lingual surfaceClose to the occlusal third on the lingual sideWithin the cervical third of the buccal surfaceBoth A and CNone of the above

Explanation

Protective crests of contour are found in the middle third of the lingual surface as well as in the cervical third of the buccal surface, making both A and C correct.