OALAB - MD 2ND VS MD 3RD

MD 3RD

Most variable morphology (with maxillary third molar).

MD 3RD

Most common congenitally missing tooth.

MD 3RD

Most frequently impacted tooth.

MD 3RD

Most common tooth to have enamel pearls (with maxillary third molars).

MD 3RD

Occlusal shape can be similar to mandibular first or second molars;

proximal shape is rhomboidal (tilted lingually 15-20°).

MD 3RD

4 or 5 cusps

MD 3RD

MB cusp > DB cusp.

MD 3RD

Has an irregular groove pattern.

MD 3RD

Roots are usually short, distally inclined, and often fused.

MD 3RD

Typically has distally inclined root trunk and apices.

MD 3RD

Occludes with maxillary second and third molar.

MD 2ND

Most symmetrical molar.

MD 2ND

Most common tooth to have cervical enamel projections.

MD 2ND

The B - L dimension is greater at the mesial than distal.

MD 2ND

Cusps are same height when viewed from buccal.

MD 2ND

Occlusal shape is rectangular; proximal shape is rhomboidal (tilted lingually 15 - 20°).

MD 2ND

4 cusps: MB (largest), DB, ML, DL.

MD 2ND

Occlusal pattern resembles a + with a straight central groove.

MD 2ND

Has two transverse ridges, three fossae with pits, three secondary grooves, one buccal groove with a pit, and a short lingual groove.

MD 2ND

Roots are closer together than the mandibular first molar and inclined distally.

MD 2ND

The root trunk is typically longer than the mandibular first molar.

MD 2ND

Occludes with the maxillary first and second molar.