History
The first European sets of dentures date from the 15th century and most probably existed before that time. They were carved from bone or ivory, or made up of teeth sourced from graveyards, the recent dead or living donors who exchanged their teeth for profit. These dentures were uncomfortable, attached visibly to a base supported by any remaining teeth with a thread of metal or silk. The false teeth were often made with ivory from the hippopotamus or walrus, and usually rotted after extended use.[citation needed]
London's Peter de la Roche is believed to be one of the first 'Operators for the Teeth', men who fashioned themselves as specialists in dental work. Often these men were professional goldsmiths, ivory turners or students of barber-surgeons.[1]
The first porcelain dentures were made around 1770 by Alexis Duchâteau. In 1791 the first British patent was granted to Nicholas Dubois De Chemant, previously assistant to Duchateau, for De Chemant's Specification, "a composition for the purpose of making of artificial teeth either single double or in rows or in complete sets and also springs for fastening or affixing the same in a more easy and effectual manner than any hitherto discovered which said teeth may be made of any shade or colour, which they will retain for any length of time and will consequently more perfectly resemble the natural teeth." He began selling his wares in 1792 with most of his porcelain paste supplied by Wedgwood.[citation needed] Single teeth in porcelain were made since 1808. Later dentures were made of vulcanite and then, in the 20th century, acrylic resin and other plastics. In Britain in 1968 79% of those aged 65-74 had no natural teeth, by 1998 this proportion had fallen to 36%.[citation needed]
2007-06-14 16:18:13
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answer #1
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answered by Tommiecat 7
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