| PDRB | Permanent Diability Rating Board |
|---|---|
| PPD | packs per day; paraphenylenediamine; percussion and postural drainage; permanent partial disability;... |
| PPI | partial permanent impairment; patient package insert; present pain intensity; purified porcine insul... |
| PPM | permanent pacemaker; phosphopentomutase; physician practice management; pigmented pupillary membrane... |
| PT | pain threshold; parathormone; parathyroid; paroxysmal tachycardia; part time; patient; pericardial t... |
| skin of teeth | The primary enamel cuticle, consisting of two extremely thin layers (the inner one clear and structureless, the outer one cellular), covering the entire crown of newly erupted teeth and subsequently abraded by mastication; it is evident microscopically as an amorphous material between the attachment epithelium and the tooth. Synonym: cuticula dentis, adamantine membrane, dental cuticle, membrana adamantina, Nasmyth's cuticle, Nasmyth's membrane, skin of teeth. (05 Mar 2000) |
|---|---|
| spaced teeth | Teeth which have separated and lost proximal contact with adjacent teeth. (05 Mar 2000) |
| natal teeth | Predeciduous teeth present at birth. They may be well formed and normal or may represent hornified epithelial structures without roots. They are found on the gingivae over the crest of the ridge and arise from accessory buds of the dental lamina ahead of the deciduous buds or from buds of the accessory dental lamina. (12 Dec 1998) |
| nonanatomic teeth | Teeth with occlusal surfaces not based on anatomic forms; artificial teeth so designed that the occlusal surfaces are not copied from natural forms, but rather are given forms which in the opinion of the designer seem more nearly to fulfill the requirements of mastication, tissue tolerance, etc. (05 Mar 2000) |
| notched teeth | The teeth of congenital syphilis in which the incisal edge is notched and narrower than the cervical area. See: Hutchinson's crescentic notch. Synonym: notched teeth, screwdriver teeth, syphilitic teeth. (05 Mar 2000) |
| numerical notation for teeth | <dentistry> The numerical notation for teeth is an alternate to Palmer's notation. In this notation, the centrals are designated as 1's, the laterals as 2's, the cuspids as 3's, the first bicuspids as 4's, the second bicuspid's as 5's, etc. (08 Jan 1998) |
| deciduous teeth | <dentistry> The primary, or baby teeth. (08 Jan 1998) |
| supernumerary teeth | <dentistry> Some people have extra teeth. These are called supernumerary teeth. (08 Jan 1998) |
| syphilitic teeth | The teeth of congenital syphilis in which the incisal edge is notched and narrower than the cervical area. See: Hutchinson's crescentic notch. Synonym: notched teeth, screwdriver teeth, syphilitic teeth. (05 Mar 2000) |
| impacted teeth | <dentistry> Teeth that have not fully erupted into their normal position. (15 Nov 1997) |
| infundibulum of teeth | Origin: L, a funnel, from infundere to pour in or into. See Infuse. 1. <anatomy> A funnel-shaped or dilated organ or part; as, the infundibulum of the brain, a hollow, conical process, connecting the floor of the third ventricle with the pituitary body; the infundibula of the lungs, the enlarged terminations of the bronchial tubes. 2. <zoology> A central cavity in the Ctenophora, into which the gastric sac leads. The siphon of Cephalopoda. See Cephalopoda. Source: Websters Dictionary (01 Mar 1998) |
| oral teeth | <dentistry> Your centrals, laterals, and cuspids. These are the teeth in the front of your mouth. (08 Jan 1998) |
| teeth | Pl> Teeth . [OE. Toth,tooth, AS. T; akin to OFries. Tth, OS. & D. Tand, OHG. Zang, zan, G. Zahn, Icel. Tnn, Sw. & Dan. Tand, Goth. Tumpus, Lith. Dantis, W. Dant, L. Dens, dentis, Gr, Skr. Danta; probably originally the p. Pr. Of the verb to eat. 239. Cf. Eat, Dandelion, Dent the tooth of a wheel, Dental, Dentist, Indent, Tine of a fork, Tusk. 1. <anatomy> One of the hard, bony appendages which are borne on the jaws, or on other bones in the walls of the mouth or pharynx of most vertebrates, and which usually aid in the prehension and mastication of food. The hard parts of teeth are principally made up of dentine, or ivory, and a very hard substance called enamel. These are variously combined in different animals. Each tooth consist of three parts, a crown, or body, projecting above the gum, one or more fangs imbedded in the jaw, and the neck, or intermediate part. In some animals one or more of the teeth are modified into tusks which project from the mouth, as in both sexes of the elephant and of the walrus, and in the male narwhal. In adult man there are thirty-two teeth, composed largely of dentine, but the crowns are covered with enamel, and the fangs with a layer of bone called cementum. Of the eight teeth on each half of each jaw, the two in front are incisors, then come one canine, cuspid, or dog tooth, two bicuspids, or false molars, and three molars, or grinding teeth. The milk, or temporary, teeth are only twenty in number, there being two incisors, one canine, and two molars on each half of each jaw. The last molars, or wisdom teeth, usually appear long after the others, and occasionally do not appear above the jaw at all. "How sharper than a serpent's tooth it is To have a thankless child !" (Shak) 2. Taste; palate. "These are not dishes for thy dainty tooth." (Dryden) 3. Any projection corresponding to the tooth of an animal, in shape, position, or office; as, the teeth, or cogs, of a cogwheel; a tooth, prong, or tine, of a fork; a tooth, or the teeth, of a rake, a saw, a file, a card. 4. A projecting member resembling a tenon, but fitting into a mortise that is only sunk, not pierced through. One of several steps, or offsets, in a tusk. See Tusk. 5., one of the appendages at the mouth of the capsule of a moss. See Peristome. 6. <zoology> Any hard calcareous or chitinous organ found in the mouth of various invertebrates and used in feeding or procuring food; as, the teeth of a mollusk or a starfish. In spite of the teeth, in defiance of opposition; in opposition to every effort. In the teeth, directly; in direct opposition; in front. "Nor strive with all the tempest in my teeth." . To cast in the teeth, to report reproachfully; to taunt or insult one with. Tooth and nail, as if by biting and scratching; with one's utmost power; by all possible means. "I shall fight tooth and nail for international copyright." . <medicine> Tooth coralline See Red-gum. To show the teeth, to threaten. "When the Law shows her teeth, but dares not bite." . To the teeth, in open opposition; directly to one's face. "That I shall live, and tell him to his teeth ." . Source: Websters Dictionary (01 Mar 1998) |
| triangularity of the teeth | A well-marked indication of advancing age in the horse, shown by increasing depth from front to rear in the occlusal surfaces of the incisor teeth; at nine years, when the marks fail, this sign is of use in determining the age of the animal. (05 Mar 2000) |
| tube teeth | Artificial teeth constructed with a vertical, cylindric aperture extending from the centre of the base up into the body of the tooth into which a pin may be placed or cast for the attachment of the tooth to a denture base. (05 Mar 2000) |