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Antique Ivory Dental Tooth Key

Currency:USD Category:Western Americana Start Price:75.00 USD Estimated At:150.00 - 250.00 USD
Antique Ivory Dental Tooth Key
SOLD
120.00USDto t************n+ buyer's premium (24.00)
This item SOLD at 2016 Dec 12 @ 11:00UTC-8 : PST/AKDT
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A fine ivory-handled antique dental tooth key. Iron shaft. This dental tooth extracting instrument has rotating bolster and claw. In its 100 years of use the key was developed and improved many times. In the key with a straight shaft ( " Key of old construction " ), the axis of motion is such that the tooth is removed at a right angle to the line of the arch. By using the bolster on the inner side, the shaft is in an oblique direction. Because of that there is a tendency for the claw to exert force in a manner that presses the tooth against the one immediately posterior. Because of this, around 1765, Ferdinand Julius Leber reshaped the straight shaft and introduced a single bend. This improvement reduced the pressure on the proximal tooth. "Key of common construction ". State: United States City: Date: c.1780-1840 FHWAC#: 41940