The tartar that collects on the teeth.

Pathology. Decay of the bones or teeth. Also attributive and in other combinations.

spec. A deposit of calcium phosphate from the saliva, which tends to harden and concrete upon the teeth. (So French tartre; cf. German weinstein.)

a concretion of dental tartar.

Imperfect or abnormal occlusion of the teeth; a case of this.

Inflammation of the pulp of a tooth.

= odontoma, n.

Inflammation of the pericementum (periodontal ligament) of a tooth.

(See quot. 1893.)

lack of occlusion of the front teeth when the jaw is closed normally.

Originally: a patch of sticky or hard material containing bacteria, deposited on the surface of a tooth (now rare). Now chiefly as a mass noun: the…

Dentistry. = overeruption, n.

a first molar tooth with a small, nodular, pitted crown resembling a mulberry, associated chiefly with congenital syphilis.

In the genitive and attributive. Designating a small, malformed first molar with a dome-shaped crown, seen in congenital syphilis; esp. in Moon's…

Dentistry. Malocclusion in which the teeth of the lower jaw are posterior to those of the upper. rare.

Involuntary or unconscious grinding or clenching of the teeth, esp. during sleep.

Abnormal elevation of the mandible (lower jaw) in relation to the maxilla (upper jaw), resulting in shortening of the lower face.

Protrusion of a tooth beyond the occlusal plane.