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单词 dentition
释义

dentition


den·ti·tion

D0137100 (dĕn-tĭsh′ən)n.1. The type, number, and arrangement of a set of teeth.2. The process of growing new teeth; teething.
[Latin dentītiō, dentītiōn-, from dentītus, past participle of dentīre, to teethe, from dēns, dent-, tooth; see dentist.]

dentition

(dɛnˈtɪʃən) n1. (Dentistry) the arrangement, type, and number of the teeth in a particular species. Man has a primary dentition of deciduous teeth and a secondary dentition of permanent teeth2. (Dentistry) teething or the time or process of teething[C17: from Latin dentītiō a teething]

den•ti•tion

(dɛnˈtɪʃ ən)

n. 1. the makeup of a set of teeth including their kind, number, and arrangement. 2. the cutting of the teeth. [1605–15; < Latin dentītiō=dentī(re) to cut teeth, teethe + -tiō -tion]

den·ti·tion

(dĕn-tĭsh′ən) The type, number, and arrangement of teeth in an animal species. In mammals, dentition consists of several different types of teeth, including incisors, canines, and molars. The teeth of toothed fish and reptiles are usually of only one type.

dentition

the production or cutting of teeth; teething. Also called odontogeny.See also: Teeth
Thesaurus
Noun1.dentition - the eruption through the gums of baby teethdentition - the eruption through the gums of baby teethodontiasis, teethinggrowing, growth, ontogenesis, ontogeny, maturation, development - (biology) the process of an individual organism growing organically; a purely biological unfolding of events involved in an organism changing gradually from a simple to a more complex level; "he proposed an indicator of osseous development in children"precocious dentition - teething at an earlier age than expected
2.dentition - the kind and number and arrangement of teeth (collectively) in a person or animaldentition - the kind and number and arrangement of teeth (collectively) in a person or animalteethprimary dentition - dentition of deciduous teethsecondary dentition - dentition of permanent teethtooth - hard bonelike structures in the jaws of vertebrates; used for biting and chewing or for attack and defensemouth, oral cavity, oral fissure, rima oris - the opening through which food is taken in and vocalizations emerge; "he stuffed his mouth with candy"set - a group of things of the same kind that belong together and are so used; "a set of books"; "a set of golf clubs"; "a set of teeth"
Translations

dentition


dentition,

kind, number, and arrangement of the teethteeth,
hard, calcified structures embedded in the bone of the jaws of vertebrates that perform the primary function of mastication. Humans and most other mammals have a temporary set of teeth, the deciduous, or milk, teeth; in humans, they usually erupt between the 6th and 24th
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 of humans and other animals. During the course of evolution, teeth were derived from bony body scales similar to the placoid scales on the skin of modern sharks. Tooth structures such as those found in humans are restricted to certain vertebrates, i.e., most fish, mammals, and reptiles, and some amphibians. The teeth of sharks, which are primitive vertebrates, consist of simple conelike structures, sometimes with serrated edges and sometimes flattened for crushing shelled prey. In many lower vertebrates the individual teeth are replaced throughout the animal's life; old tooth loss and new tooth growth follow wavelike patterns down the length of jaw and affect alternate teeth at any one time, so that half the teeth in a region are always functional. Fish and reptiles that have teeth have homodont dentition; that is, all teeth are identical. The mammals have heterodont dentition, or teeth of different basic types, including incisors for nipping or cutting, canines for piercing, and premolars and molars for shearing and grinding. Carnivorous animals have relatively small incisors, used for grasping rather than for cutting; long and strong canines; and relatively thin, sharp premolars and molars, used for severing muscle and other tissues. Herbivorous animals have well-developed incisors, used to cut grass and other vegetation; canines that are either smaller than those of carnivores or absent altogether; and broad, flat premolars and molars for grinding food. In some herbivores, the upper canines are absent, so they cut vegetation by the combined action of the tongue and lower incisors. Omnivorous animals such as man have less specialized dentition. Only part of the dentition of mammals is usually replaced; however, the incisors of rodents grow out at the base as fast as they wear down at the tip. Teeth, the hardest structures in the body, have been well preserved as fossils and have played an important role for paleontologists and physical anthropologists in the study of human evolution.

dentition

[den′tish·ən] (vertebrate zoology) The arrangement, type, and number of teeth which are variously located in the oral or in the pharyngeal cavities, or in both, in vertebrates.

dentition

1. the arrangement, type, and number of the teeth in a particular species. Man has a primary dentition of deciduous teeth and a secondary dentition of permanent teeth 2. teething or the time or process of teething

dentition


dentition

 [den-tish´un] the teeth" >teeth in the dental arch, usually referring to the natural teeth in position in the alveoli.deciduous dentition primary teeth; see tooth.mixed dentition the complement of teeth in the jaws after eruption of some of the permanent teeth, but before all the deciduous teeth are shed.permanent dentition permanent teeth; see tooth.primary dentition primary teeth; see tooth.

den·ti·tion

(den-tish'ŭn), The natural teeth, as considered collectively, in the dental arch; may be deciduous, permanent, or mixed. [L. dentitio, teething]

dentition

(dĕn-tĭsh′ən)n.1. The type, number, and arrangement of a set of teeth.2. The process of growing new teeth; teething.

dentition

Teeth, natural or artificial. See Dental implants, Dentures, Postpermanent teeth.

den·ti·tion

(den-tish'ŭn) The natural teeth, as considered collectively, in the dental arch; may be deciduous, permanent, or mixed. [L. dentitio, teething]

dentition

(den-tish'un) [L. dentitio] DENTITIONThe type, number, and arrangement of teeth in the dental arch. See: illustration; teeth for illus.

diphyodont dentition

Two sets of teeth (i.e., primary and permanent, as in many mammals and humans).

heterodont dentition

A set of teeth of various shapes that may serve different functions (e.g., incisors, canines, and molars).

impaired dentition

Disruption in tooth development/eruption patterns or structural integrity of individual teeth.

mixed dentition

A set of both primary and permanent teeth, as in children between 6 and 13 years of age.

monophyodont dentition

A single set of teeth.

permanent dentition

The 32 permanent teeth, which begin to erupt at about 6 years of age in people. These are completed by the 16th year with the exception of third molars, which appear between the 18th and 25th years. The incisors are followed by the bicuspids (premolars) and the canines; then the second molars are followed by the third molars. In some individuals the third molars, although present beneath the gingiva, do not erupt. The appearance of the first molars is highly variable, but in some instances they may be the first permanent teeth to appear. Synonym: dens permanens See: teeth

polyphyodont dentition

Several successive sets of teeth developing during a lifetime.

primary dentition

The 20 primary or deciduous teeth in children. In general, the order of eruption is two lower central incisors, 6 to 8 months; two upper central incisors, 5 to 7 months; two lower lateral incisors, 8 to 11 months; two upper lateral incisors, 7 to 10 months; four canines (cuspids), lower and upper, 16 to 20 months; four first molars, lower and upper, 10 to 16 months; four second molars, upper and lower, 20 to 30 months.

dentition

Pertaining to the teeth. The primary dentition consists of 20 teeth, the secondary, or permanent, dentition, usually 32.

dentition

the arrangement, type and number of teeth in vertebrates.

den·ti·tion

(den-tish'ŭn) Natural teeth, considered collectively, in dental arch; may be deciduous, permanent, or mixed.[L. dentitio, teething]

dentition


Related to dentition: primary dentition
  • noun

Synonyms for dentition

noun the eruption through the gums of baby teeth

Synonyms

  • odontiasis
  • teething

Related Words

  • growing
  • growth
  • ontogenesis
  • ontogeny
  • maturation
  • development
  • precocious dentition

noun the kind and number and arrangement of teeth (collectively) in a person or animal

Synonyms

  • teeth

Related Words

  • primary dentition
  • secondary dentition
  • tooth
  • mouth
  • oral cavity
  • oral fissure
  • rima oris
  • set
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更新时间:2024/11/12 5:19:16