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Large back teeth, which grind; grinding teeth.

Occupy the farther part of each alveolar arch. Their coronae are broader than they are high: unequal; tuberculated: and the roots are more or less subdivided. They are 20 in number, 10 in each jaw. The first two pairs of molares, premo`lar or bicuspid, dentes bicuspida`ti seu bucca`les. The coronar have two tuber cles; the outer being more prominent and larger than the inner. the root is commonly simple; sometimes bifurcated. The other three pairs have been termed, great molares- dentes multicuspidees (Ch.) Their coronae are cubical rounded, and have, at the upper surface, four or five tubercles, separated by deep furrows. The root is divided into two,three,four and five fangs, which are more or less curved. The third great molaris appears a long time after the others, and hence has been called Dens sapien`tiae or Wisdom tooth.

A t. having more than one root and a rounded quadrangular crown with several cusps. In adult dentition there are (including the bicuspids) ten molar teeth in each jaw.