| 释义 |
primary tooth
primary toothn. Any of the temporary first teeth of a young mammal. Also called baby tooth, deciduous tooth, milk tooth.Thesaurus| Noun | 1. |  primary tooth - one of the first temporary teeth of a young mammal (one of 20 in children)baby tooth, deciduous tooth, milk toothchild's body - the body of a human childtooth - hard bonelike structures in the jaws of vertebrates; used for biting and chewing or for attack and defense |
EncyclopediaSeetoothprimary tooth
de·cid·u·ous tooth [TA] a tooth of the first set of teeth, comprising 20 in all, that erupts between 6-24 months of life. Synonym(s): dens deciduus [TA], baby tooth, deciduous dentition, dens lacteus, first dentition, milk tooth, primary dentition, primary tooth, temporary toothprimary toothn. Any of the temporary first teeth of a young mammal. Also called baby tooth, deciduous tooth, milk tooth.de·cid·u·ous tooth (dĕ-sij'ū-ŭs tūth) [TA] One of the first set of teeth, comprising 20 in all, which erupt between the mean ages of 6 and 28 months of life.
Synonym(s): dens deciduus [TA] , baby tooth, deciduous dentition, milk dentition, milk tooth, primary dentition, primary tooth, temporary tooth. tooth (tooth) (teth) plural.teeth STRUCTURE OF A TOOTH: (longitudinal section)Any of the hard, bony conical structures of the upper and lower jaws used for chewing. A tooth consists of a crown portion above the gum, a root portion embedded in a socket (alveolus) of the jaw bone, and a neck or cervical constricted region between the crown and root. The soft-tissue gingiva covers the neck and root to a variable extent, depending on age and oral hygiene. The major portion of a tooth consists of dentin, which is harder than bone; enamel; and cementum, which is similar to bone. The pulp cavity contains the dental pulp. Each tooth has five surfaces: occlusal, mesial, distal, lingual, and facial or buccal. See: illustration; dentitionEveryone has two complete sets of teeth during his life. The 20 primary teeth are the first set of teeth a person develops. They exfoliate by age 14 and are replaced by the 32 permanent teeth. The permanent teeth include the following: incisors, canines (cuspids), premolars (bicuspids), and molars. On average, a child should have 6 teeth at 1 year, 12 teeth at 18 months, 16 teeth at 2 years, and 20 teeth at 12 years. Some children are born with a few erupted teeth; in other children the teeth may not appear until 16 months. Patient careHealth care professionals should assess patients’ teeth and gums during physical examinations, educate patients about routine dental hygiene (brushing, flossing, gum stimulation, use of oral rinses), and refer them to a dental professional for dental caries, eruption anomalies, or periodontal problems. See: dental plaque; periodontal diseaseaccessional toothA permanent molar tooth that arises without deciduous predecessors in the dental arch.anterior toothThe central and lateral incisors and/or the canines, located adjacent to the midline of the maxilla or mandible.baby toothDeciduous tooth.bicuspid toothA permanent, premolar tooth. There are eight premolars, two in each quadrant (four in each jaw) between the canines and molars. Premolars have two or three cusps on the occlusal surface. bull toothTaurodontism.cracked toothA tooth whose enamel and dentin are fractured.  DECIDUOUS TEETH (LEFT SIDE)deciduous toothAny of the 20 teeth that make up the primary dentition, which are shed and replaced by the permanent teeth. Synonym: baby tooth; milk tooth; primary tooth See: illustrationhypersensitive toothA tooth sensitive to temperature changes, sweets, or percussion. It may exhibit gingival recession, exposed root dentin, caries, or periodontal disease. TreatmentPopular treatments for hypersensitivity include topical varnishes, sealants, and topical fluoride applications. Other treatments include application of silver nitrate, formalin, glycerin, strontium chloride, potassium nitrate, calcium compounds, sodium citrate, and potassium oxalate. Patient careThe patient can reduce sensitivity by a regimen of plaque control, dentifrice with fluoride, self-applied fluoride, and control of diet. impacted toothA tooth unable to erupt due to crowding by adjacent teeth, malposition of the tooth, or developmental disturbances.malacotic toothA tooth soft in structure, white in color, and esp. prone to decay.milk toothDeciduous tooth.permanent toothAny of the 32 teeth that develop as the second dentition and replace the deciduous teeth. Synonym: secondary tooth See: deciduous tooth for illusprimary toothDeciduous tooth.sclerotic toothA yellowish tooth that is naturally hard and highly resistant to caries.secondary toothPermanent tooth.succedaneous toothIn dentistry, a permanent tooth that succeeds (replaces) a normally erupted deciduous tooth. It includes the premanent incisors, cuspids, and premolars. The deciduous molars are replaced by the permanent premolars, which are not succedaneous teeth. wisdom toothAny of the third most-distal molars on each side of both jaws. These four molars may appear as late as the 25th year or may never erupt. FinancialSeeToothprimary tooth
Related to primary tooth: Milk teethSynonyms for primary toothnoun one of the first temporary teeth of a young mammal (one of 20 in children)Synonyms- baby tooth
- deciduous tooth
- milk tooth
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