| AH | abdominal hysterectomy; absorptive hypercalciuria; accidental hypothermia; acetohexamide; acid hydro... |
|---|---|
| AHES | artificial heart energy system |
| AHJ | artificial hip joint |
| AI/COAG | artificial intelligence hemostasis consultant system |
| AID | acquired immunodeficiency disease; acute infectious disease; acute ionization detector; Agency for I... |
| YAC | Yeast Artificial Chromosome |
|---|---|
| EH-TAH | electrohydraulic total artificial heart |
| 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) |
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| 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) |
| permanent tooth | One of the 32 teeth belonging to the second or permanent dentition; eruption of the permanent teeth begins from the fifth to the seventh year, and is not completed until the seventeenth to the twenty-third year, when the last of the wisdom teeth appears. Synonym: dens permanens, dens succedaneus, second tooth, secondary dentition, succedaneous dentition, succedaneous tooth. (05 Mar 2000) |
| perpetually growing tooth | A physiologic phenomenon whereby the tooth continually or constantly grows, calcifies, and erupts; e.g., the rat incisor tooth. Synonym: persistently growing tooth. (05 Mar 2000) |
| persistently growing tooth | A physiologic phenomenon whereby the tooth continually or constantly grows, calcifies, and erupts; e.g., the rat incisor tooth. Synonym: persistently growing tooth. (05 Mar 2000) |
| root canal of tooth | The chamber of the dental pulp lying within the root portion of a tooth. Synonym: canalis radicis dentis, marrow canal, pulp canal. (05 Mar 2000) |
| root of tooth | That part of a tooth below the neck, covered by cementum rather than enamel, and attached by the periodontal ligament to the alveolar bone. Synonym: radix dentis, radix, root. (05 Mar 2000) |
| cingulum of tooth | A U-or W-shaped ridge at the base of the lingual surface of the crown of the upper incisors and cuspid teeth, the lateral limbs running for a short distance along the linguoproximal line angles, the central portion just above the gingiva. Synonym: cingulum dentis, basal ridge, lingual lobe. (05 Mar 2000) |