dentin


Also found in: Dictionary, Thesaurus, Encyclopedia, Wikipedia.

dentin

 [den´tin]
the chief substance of the teeth, surrounding the tooth pulp and covered by the enamel on the crown and by cementum on the roots. adj., adj den´tinal.

den·tin

(den'tin), Do not confuse this word with dentine.
The ivory forming the mass of the tooth. About 20% is organic matrix, mostly type I collagen, with some elastin and a small amount of mucopolysaccharide; the inorganic fraction (70%) is mainly hydroxyapatite, with some carbonate, magnesium, and fluoride. The dentin is traversed by a large number of fine tunnels known as tubules, running from the pulp cavity outward; within the tubules are processes from the odontoblasts.
[L. dens, tooth]

dentin

(dĕn′tĭn) or

dentine

(-tēn′)
n.
The main, calcareous part of a tooth, beneath the enamel and surrounding the pulp chamber and root canals.

den′tin·al (dĕn′tə-nəl, dĕn-tē′-) adj.

den·tin

(den'tin)
The ivory forming the mass of the tooth. Calcified tissue that is not as hard as enamel but harder than cementum. About 20% is organic matrix, mostly a fibrous protein collagen, with some elastin and a small amount of mucopolysaccharide; the inorganic fraction (70%) is mainly hydroxyapatite, with some carbonate, magnesium, and fluoride. It is traversed by closely packed tubules running from the pulp cavity outward; within the tubules are processes from the odontoblasts.
Synonym(s): dentinum.
[L. dens, tooth]

Dentin

The middle layer of a tooth, which makes up most of the tooth's mass.
Mentioned in: Tooth Decay

den·tin

(den'tin)
[TA] Ivory forming mass of tooth.
Synonym(s): dentinum [TA] , ebur dentis.
[L. dens, tooth]
References in periodicals archive ?
Seventy-two extracted human molar teeth were included in the study: 60 teeth with cavitated caries lesions extending into dentin, and 12 teeth without caries lesion.
Sodium hypochlorite could not penetrate deeply enough into the dentin layer and could not exterminate bacteria in the deep dentin layers (7).
Selective caries removal was executed on pulpal wall with hand excavators until firm dentin, and it was possible to observe that the remaining dentin had a darker color and leathery consistency.
These results demonstrate the great potential of DPCs + CPC + metformin construct as an ideal "stem cell-scaffold-small molecule" system for dentin regeneration.
Thus, the aim of this study was to evaluate the effect of chlorhexidine dentin treatment on the microtensile dentin bond strength of different adhesive systems (etc-hand-rinse, self-etch and universal) at different storage times (72 hours, 3 months and 6 months).
In Group 2, the exposed dentin surfaces were conditioned with GC cavity conditioner for a duration of 10 seconds washed, air dried but not desiccated.
The dental pulp is isolated from the lesion by the defensive response of a mature odontoblast, which produces secondary and reparative dentin in response to external physiological and pathological stimuli.
As part of the study, the researchers demonstrated that the major protein in the dentin is converted to smaller fragments when treated with hydrogen peroxide.
In the future, the researchers also plan to find out whether hydrogen peroxide affects not just collagen, but also other proteins that dentin contains.
Artificial saliva was used to ensure the presence of [Ca.sup.2+]-and [Zn.sup.2+]-ions required for the function of dentin endogenous enzymes (29).