Word: enamels
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...churches in Greece, Italy and Turkey as models, visited quarries and factories to get the marbles and materials he wanted. At last week's dedication he heaved a sigh of relief because everything had arrived safely. Narrowest squeak: the tesserae (small pieces of marble, glass, gold leaf and enamel) which make up the apse's mosaics. Shipped from Venice, they got out just before World War II put a stop to imports from Italy...
...True-Blend" teeth: the inner body of porcelain is made in one of ten different shades from cream to orange, matched to a patient's original teeth, or to his complexion. Over this core, corresponding to the dentine of "natural teeth, Dr. Myerson slips a transparent grey enamel coat...
...Myerson's aim is to imitate, not improve on nature. So he often inserts little wedges of darker stained porcelain into the orange body, cuts ridges and erosions on the enamel coats, bleaches small patches, shadows imitation cavities, sets teeth crooked in their plastic plates. The new teeth are made in Dr. Myerson's two Boston factories, sold to dentists all over the U. S. through regular dental supply houses. A plate takes eight days to make, costs little more than ordinary false teeth...
Taking a lesson from Oakley, the U. S. Public Health Service for years sent warnings to 300 other "mottled enamel areas" from South Carolina to Oregon. Even one-millionth part of fluorine in four daily glasses of water over a period of a year, said dentists, was enough to pit a growing child's teeth for life. And fluorine-pitted teeth, all dentists believed, quickly decayed and fell...
...work examining the teeth of 15,000 children in the Middle West. Last year he issued a report of his findings that shocked every dentist in the U. S. left Oakley parents down in the mouth. Said he: "The amount of caries [decay] is less in mottled enamel areas than in normal areas. ..." Although fluorine makes ugly smiles, it preserves teeth "independently of mottled enamel." To the known factors causing tooth decay (too many starches and sweets, not enough vitamins, an abundance of mouth bacteria) he suggested that his colleagues add lack of fluorine. There is a possibility, he said...