| AHES | artificial heart energy system |
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| AHJ | artificial hip joint |
| AI/COAG | artificial intelligence hemostasis consultant system |
| AID | acquired immunodeficiency disease; acute infectious disease; acute ionization detector; Agency for I... |
| AIM | Abridged Index Medicus; acute transverse myelopathy; area of interest magnification; artificial inte... |
| bicuspid tooth | A tooth usually having two tubercles or cusps on the grinding surface and a flattened root, single in the lower jaw and upper second premolar, and furrowed in the upper first premolar. There are four premolars in each jaw, two on either side between the canine and the molars; there are no premolars in the deciduous dentition. Synonym: dens premolaris, bicuspid tooth, dens bicuspidus. (05 Mar 2000) |
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| buck tooth | An anterior tooth in labioversion. (05 Mar 2000) |
| canine tooth | <dentistry> A tooth having a crown of thick conical shape and a long, slightly flattened conical root; there are two canine teeth in each jaw, one on either side adjacent to the distal surface of the lateral incisors, in both the deciduous and the permanent dentition. Synonym: dens caninus, canine, cuspid tooth, cuspidate tooth, cuspid, dens angularis, dens cuspidatus, eye tooth. (05 Mar 2000) |
| carnassial tooth | A tooth adapted to shear flesh; the last upper premolar or first lower molar tooth of certain carnivores. (05 Mar 2000) |
| ghost tooth | A tooth with reduced radiodensity seen in regional odontodysplasia. (05 Mar 2000) |
| vestibular surface of tooth | The surface of a tooth that faces the buccal or labial mucosa of vestibule of the mouth; opposite to the lingual surface of tooth. Synonym: facies vestibularis dentis, facies facialis dentis, buccal surface, facial surface of tooth, facies buccalis, facies labialis, labial surface. (05 Mar 2000) |
| cavity of tooth | The central hollow of a tooth consisting of the crown cavity and the root canal; it contains the fibrovascular dental pulp and is lined throughout by odontoblasts. Synonym: cavitas dentis, cavity of tooth, cavum dentis. (05 Mar 2000) |
| vital tooth | A tooth with a living pulp. (05 Mar 2000) |
| pegged tooth | A conical tooth whose sides converge from the cervical to the incisal region. (05 Mar 2000) |
| cervical margin of tooth | The slightly constricted part of a tooth, between the crown and the root. Synonym: cervix dentis, cervical margin of tooth, cervical zone of tooth, collum dentis, dental neck. (05 Mar 2000) |
| cervical zone of tooth | The slightly constricted part of a tooth, between the crown and the root. Synonym: cervix dentis, cervical margin of tooth, cervical zone of tooth, collum dentis, dental neck. (05 Mar 2000) |
| Charcot-Marie-Tooth disease | <disease> A slowly progressive genetic disorder which is the most common of the inherited peripheral neuropathies, and encompasses a family of disorders characterised by distal muscle weakness and diminished nerve conduction velocity, due to the destruction of nerves with degeneration of the myelin sheath. Features include muscle atrophy in the feet and the legs, progressing to the hands and arms, often with foot drop and a slapping gait. The predominant variety, designated CMT1, is an autosomal dominant disorder caused, in most cases, by duplication of a very large (1.5 Mb) region on chromosome 17p11.2-12. A related condition, hereditary neuropathy with liability to pressure palsies (HNPP), is associated with a large deletion in the same general region. There is no specific treatment for this disorder. (16 Dec 1997) |
| cheek tooth | A tooth having a somewhat quadrangular crown with four or five cusps on the grinding surface; the root is bifid in the lower jaw, but there are three conical roots in the upper jaw; there are six molars in each jaw, three on either side behind the premolars in the permanent dentition; in the deciduous dentition there are but four molars in each jaw, two on either side behind the canines. Synonym: dens molaris, cheek tooth, molar, multicuspid tooth. (05 Mar 2000) |
| mesial surface of tooth | The contact surface of a tooth that is directed toward the median plane of the dental arch; opposite to the facies distalis dentis. Synonym: facies mesialis dentis. (05 Mar 2000) |
| green tooth | Green to brown discoloration of the primary teeth associated with erythroblastosis foetalis and caused by deposition of haemoglobin pigments in the developing teeth. (05 Mar 2000) |