whitlockite calculus
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Whitlockite — Infobox mineral name = Whitlockite category = Phosphate Mineral boxwidth = boxbgcolor = imagesize = caption = formula = molweight = 1,071.45 gm color = Colorless, gray white habit = massive to tabular system = Trigonal twinning = cleavage = None… … Wikipedia
Calculus (dental) — Heavy staining and calculus deposits exhibited on the lingual surface of the mandibular anterior teeth, along the gumline. In dentistry, calculus or tartar is a form of hardened dental plaque. It is caused by the continual accumulation of… … Wikipedia
phosphate calculus — phosphatic calculus a urinary calculus composed of a phosphate such as brushite, struvite, or whitlockite; it may be hard, soft, or friable, and so large that it may fill the renal pelvis and calices … Medical dictionary
Calcium — A mineral found mainly in the hard part of bones. Bones serve as a storage area for calcium. Calcium is added to bones by cells called osteoblasts. It is removed from bones by cells called osteoclasts. When children consume calcium, they absorb… … Medical dictionary
