odontoblasts


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Related to odontoblasts: tertiary dentin, mantle dentin

odontoblasts

the cells that give rise to dentine in vertebrate teeth and to simple teeth in invertebrates.
References in periodicals archive ?
However, VEGFR2 was not expressed within the dentine matrix or on odontoblasts. Some endothelial cells expressed VEGFR2, but not all blood vessels were positive.
Odontoblasts lined along the pulp-dentin border below which the tubular dentin was regularly presented in noninflamed dental pulp (Figure 1(a)).
* fibrous denticles--formed from the remains of the epithelial cells of the Hertwig epithelial root sheath, with odontoblasts arranged concentrically around,
Smear layer is consequenting from instrumentation, contains organic and inorganic particles of cut dentine, necrotic or vital pulp fragments, odontoblasts endings, microorganisms and blood cells.19 When analyzed by scanning electron microscope (SEM), smear layer on root canal walls appears as an irregular amorphous mass with grained surface.16 Most researchers agree that extensive instrumentation of root canal subsequently is leading to formation of smear layer, which means that thickness of the layer depends on instrumentation.16 Common depth of superficial sublayer is 1-2 m, while the depth of the sublayer impressed into dentinal tubules may be up to 40 m.16
Calcium hydroxide has been shown to promote the differentiation of odontoblasts or odontoblast-like cells, which will form a hard tissue bridge in the pulp, i.e.
The heat transferred to the pulp causes various histopathologic changes such as formation of blisters, ectopic odontoblasts, protoplasm coagulation and expansion of the liquid in the dentinal tubules.
It is assumed that they lead to initial change that causes undifferentiated cells within the pulp to differentiate into odontoblasts, which then form a hard tissue barrier at the pulp exposure site [10,11].
In addition regeneration causes odontoblasts to surround the pulp.
Metalloproteinases are expressed by odontoblasts and other pulpal cells during synthesis of the extracellular matrix; they are gelatinases (MMP2-9), collagenases (MMP1-8), and estromelisines (MMP 10-11).
The literature mentions several hypotheses for the etiology of regional odontodysplasia such as trauma, local ischemia, viral infection, vascular defect, irradiation, vitamin deficiency, metabolic and nutritional disorders, Rh incompatibility, local somatic mutation, hyperpyrexia, manifestation of latent virus in the odontogenic epithelium during dental development, genetic mutation of odontoblasts, premature degeneration of the enamel organ, and idiopathic factors (ALEVA et al., 1996; NEUPERT; WRIGHT, 1989; REZENDE et al., 1998; VOLPATO et al., 2008).
Initially, it was believed that the nerve fibers or the odontoblasts in teeth were responsible.
It is synthesized only by osteoblasts and odontoblasts, with a small amount released de novo into the circulation (2).