dentition

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Related to deciduous dentition: Milk teeth, permanent 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.
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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.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.

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
Collins Discovery Encyclopedia, 1st edition © HarperCollins Publishers 2005
References in periodicals archive ?
(2011), who identified subluxation as the most prevalent injury in trauma to the deciduous dentition.
Breast feeding, bottle feeding, and non-nutritive sucking; effects on occlusion in deciduous dentition. Arch Dis Child.
Anand, "Age changes in the occlusal pattern of deciduous dentition.," Journal of Dental Research, vol.
Duckworth, "Odontodysplasia in the deciduous dentition," The Dental practitioner and dental record, vol.
The purpose of this article is to report a rare case of congenitally missing permanent teeth with over retained deciduous dentition in 2 siblings.
It generally initiates with the completion of deciduous dentition eruption and ends with the eruption or removal of an impacted tooth.
From a public health perspective, the assessment of malocclusion in the deciduous dentition should focus on magnitude and severity as a guide to establishing strategies aimed at preventing occlusal problems later in life.
Detailed history revealed that she had retained deciduous dentition which was confirmed on a panoramic radiograph.
Deciduous dentition consists of 28 teeth: DI, 3/3; DC, 1/1; DP, 3/3, and the permanent set comprises 34 teeth: I, 3/3; C, 1/1; P,3/3; M, 1/2.
Supernumerary root in deciduous dentition is very rare and occurs most commonly in mandibular molars and in canines.
CLIP HLP (mean value) (mean value) P1| * 1.04 0.80 PIIs ** 1.19 0.85 Dmft 3.00 4.16 DM FT 2.61 1.25 SM >[10.sup.5] cfu/ml 78.57% 85.7% LB >[10.sup.5] cfu/ml 75% 64.2% CLIP: patients with cleft; HLP: healthy patients; PII: plaque index on Ramfjord teeth, respectively; Pills: plaque index on teeth situated near the cleft, respectively; dmft: caries index in the deciduous dentition; DMF r: caries index in the permanent dentition; MS: levels of mutans streptococci; LB: levels of lactobacilli; * p=0.004; ** p=0.000 Table 2.