enamel prism

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• enamel prism sheath — enamel rod sheath a sheath of organic tissue completely or partially surrounding each enamel prism. Called also prism s. and rod s …   Medical dictionary

• prism sheath — enamel prism s …   Medical dictionary

• enamel rod — n one of the elongated prismatic bodies making up the enamel of a tooth called also enamel prism …   Medical dictionary

• Enamel rod — An Enamel rod is the basic unit of tooth enamel. The antiquated term is enamel prism. Measuring 4 μm wide to 8 μm high, an enamel rod is a tightly packed, highly organized mass of hydroxyapatite crystals. In cross section, it is best compared to… …   Wikipedia

• enamel rods — the approximately parallel rods or prisms forming the enamel of teeth. They are enclosed in a sheath of organic matter (the enamel rod sheath, or prism sheath) and are embedded in the interprismatic or cement substance …   Medical dictionary

• prism — A transparent solid, with sides that converge at an angle, that deflects a ray of light toward the thickest portion (the base) and splits white light into its component colors; in spectacles, a p. corrects ocular muscle im …   Medical dictionary

• enamel — The hard glistening substance covering the exposed portion of the tooth. In its mature form, it is composed of an inorganic portion made up of 90% hydroxyapatite and 6 8% calcium carbonate, calcium …   Medical dictionary

• Tooth enamel — Labeled molar Latin enamelum Code TA …   Wikipedia

• rod sheath — enamel prism s …   Medical dictionary

• ameloblast — One of the columnar epithelial cells of the inner layer of the enamel organ of a developing tooth, concerned with the formation of enamel matrix. SYN: enamel cell, enameloblast, ganoblast. [Early E. amel, enamel …   Medical dictionary

• Noronhomys — Conservation status Extinct (IUCN 3.1)[1] …   Wikipedia