ameloblast


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Related to ameloblast: odontoblast, ameloblastoma
  • noun

Words related to ameloblast

a cell from which tooth enamel develops

References in periodicals archive ?
In marsupials, tubules are described as hollow spaces formed by the course of ameloblasts, occurring within or outside of prisms, and sometimes continuous with dentine tubules across the enamel-dentine junction (Boyde and Lester, 1967).
Environmental conditions thought to affect ameloblast function range from ill-health during pregnancy to perinatal medical conditions such as premature birth and low birth weight to early childhood acute illnesses including pneumonia and unexplained high fever [Chawla et al.
The minimum time period effective enough to cause abnormal ameloblast function is likely to depend on the sensitivity of the ameloblasts to the harmful factor and the power/concentration of this factor.
Researchers at the Forsyth Institute in Massachusetts, a fluoride research center for the past century, found that fluoride initiates an ER stress response in ameloblasts that interferes with protein synthesis and secretion--culminating in dental fluorosis.
Inadequate amounts of vitamin C results in changes in the ameloblasts and odontoblasts; ameloblasts and odontoblast atrophy, and there is a decrease in their orderly polar arrangement.
8) It has also been recently shown that since exposure to fluoride can inhibit protein synthesis, fluoride may therefore induce endoplasmic reticulum stress in ameloblasts responsible for dental enamel formation.
Although its murine and porcine counterparts play a role in maturation of the dental enamel with stage-specific production in ameloblasts and odontoblasts (23-25), studies in this area in humans have not been reported.
This toxic effect extends to the ameloblasts making tooth enamel, which is consequently weakened and then made brittle; its visible appearance is, of course, dental fluorosis.
This process is controlled by ameloblasts, which secrete an extracellular protein matrix and provide a gel scaffold to support apatitic crystal growth (Fincham & Simmer 1997).
Placoid scales develop in the upper layer of the dermis as dermal papillae (scale primordia), which eventually differentiate into an innermost dental papilla, a layer of odontoblasts that secrete dentine, and a layer of ameloblasts that secrete enamel (Kemp 1999).
Second, the interference by TCDD with the formative stage of tooth development--that is, the function of secretory ameloblasts and odontoblasts--results in delayed or defective mineralization of the molar teeth (Gao et al.
Its production begins with a matrix of amelogenin, produced by cells called ameloblasts, along with the less abudant protein enamelin.
At the secretory stage, ameloblasts secrete large amounts of enamel matrix proteins within which long thin ribbons of enamel mineral, mainly hydroxyapatite, are formed almost immediately the enamel matrix is laid down.
Characterized by pits, furrows, or swales on the surface of teeth, enamel hypoplasia is a permanent record of disturbances that hinder the development of ameloblasts (cells responsible for enamel deposition).
The tumor is made up of a blend of ameloblasts and epithelial cells that try to duplicate the enamel organ.