Orthodontic spreader
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United States of America Patent
Stats
-
Nov 13, 1984
Grant Date -
N/A
app pub date -
Mar 14, 1983
filing date -
Apr 8, 1982
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
This invention relates to an orthodontic spreader, particularly for correcting the positions of molars in the upper jaw, and comprises pressure-transmitting nuts for applying force at points which are as close as possible to the center of resistance. The spreader is capable of applying a high pressure and has a large spreading capacity and is as convenient as possible for the patient. The actuating screw for moving the pressure-transmitting nuts in opposite directions comprises an actuating portion, which is disposed between said pressure-transmitting nuts. Guide rods are slidably mounted in both pressure-transmitting nuts and carry stops which axially restrain said guide rods.
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Family
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Cited Art Landscape
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