OALAB- MX 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.

MX 3RD

Most variable shape of any other tooth (with mandibular third molar).

MX 3RD

Second most congenitally missing tooth (next to mandibular third molar).

MX 3RD

Shortest permanent tooth.

Crown morphology. Shortest maxillary crown.

MX 3RD

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

MX 3RD

Occlusal table is usually heart-shaped since DL cusp has little or no development; proximal shape is trapezoidal.

MX 3RD

Crown tapers lingually.

MX 3RD

3 cusps: MB, DB, lingual.

MX 3RD

Oblique ridge is poorly developed and often absent.

MX 3RD

Roots are often fused and distally inclined.

MX 3RD

Occludes only with mandibular third molar.