Figure 2

Size and inclination of the metacone on the labial side of the M1 tooth.

(A) As large as the paracone. (B) Smaller than the paracone. (C) Inclined posteriorly parallel to the axis of the paracone. (D) Slightly inclined posteriorly but not parallel to the axis of the paracone. (E) Not inclined posteriorly (=vertical). Colors correspond to those in Fig. 4.