| tooth cervix | The constricted part of the tooth at the junction of the crown and root or roots. It is often referred to as the cementoenamel junction (cej), the line at which the cementum covering the root of a tooth and the enamel of the tooth meet. (12 Dec 1998) |
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| tooth components | The anatomical components of a tooth, its tissues, and correlated parts. (12 Dec 1998) |
| tooth, cracked, syndrome | <syndrome> A toothache caused by a broken tooth (tooth fracture) without associated cavity or advanced gum disease. Biting on the area of tooth fracture can cause severe sharp pains. These fractures are usually due to chewing or biting hard objects such as hard candies, pencils, nuts, etc. Sometimes, the fracture can be seen by painting a special dye on the cracked tooth. Treatment usually is to protect the tooth with a crown. However, if placing a crown does not relieve pain symptoms, a root canal procedure may be necessary. (12 Dec 1998) |
| tooth crown | The upper part of the tooth, which joins the lower part of the tooth (tooth root) at the cervix (tooth cervix) at a line called the cementoenamel junction. The entire surface of the crown is covered with enamel which is thicker at the extremity and becomes progressively thinner toward the cervix. (12 Dec 1998) |
| tooth, deciduous | The 20 teeth of the first dentition, which are shed and replaced by the permanent teeth, usually by the age of six years. All deciduous teeth are normally expected to erupt by the age of two and a half years. (12 Dec 1998) |
| tooth demineralization | A tooth's loss of minerals, such as calcium in hydroxyapatite from the tooth matrix, caused by acidic exposure. An example of the occurrence of demineralization is in the formation of dental caries. (12 Dec 1998) |
| tooth discoloration | Any change in the hue, colour, or translucency of a tooth due to any cause. Restorative filling materials, drugs (both topical and systemic), pulpal necrosis, or haemorrhage may be responsible. (12 Dec 1998) |
| tooth erosion | Progressive loss of the hard substance of a tooth by chemical processes that do not involve bacterial action. (12 Dec 1998) |
| tooth exfoliation | Physiologic loss of the primary dentition. (zwemer, boucher's clinical dental terminology, 4th ed) (12 Dec 1998) |
| tooth extraction | The surgical removal of a tooth. (12 Dec 1998) |
| tooth form | The characteristics of the curves, lines, angles, and contours of various teeth which permit their identification and differentiation. (05 Mar 2000) |
| tooth fractures | Break or rupture of a tooth or tooth root. (12 Dec 1998) |
| tooth germ | The collective tissues from which an entire tooth is formed, including the dental sac, enamel organ, and dental papilla. (12 Dec 1998) |
| Tooth, Howard | <person> English physician, 1856-1925. See: Charcot-Marie-Tooth disease. Synonym: dens. (05 Mar 2000) |
| tooth, impacted | A tooth that is prevented from erupting by a physical barrier, usually other teeth. Impaction may also result from orientation of the tooth in an other than vertical position in the periodontal structures. (12 Dec 1998) |