Dentistry – Orthodontics – Means to transmit or apply force to tooth
Patent
1995-11-29
1998-02-24
O'Connor, Cary E.
Dentistry
Orthodontics
Means to transmit or apply force to tooth
A61C 712
Patent
active
057206112
ABSTRACT:
A long-armed type molar uprighting spring is disclosed. It contains: (a) a lingual groove rest for mounting the uprighting spring in a lingual groove of a first molar; (b) a loop, which extends from the lingual groove and can be fixedly mounted around a mesial side of a second molar; (c) a buccal bracket rest extending from one end of the loop opposing the lingual groove rest for resting the upright spring on a buccal bracket of the first molar; (d) a reactivating area, which extends from the other end of the buccal bracket rest to fit into an area between the first molar and a second premolar so as to provide a stronger activating function; (e) a lever arm, which extends from the reactivating area to provide an uprighting function in accordance with impacted condition of the second molar. The long-armed type uprighting spring is specially designed in accordance with a first kind lever theory so as to overcome the problem of poor bonding that may affect a molar. After the uprighting spring is mounted between molars, an impacted molar will become uprighted so as to grow continuously to a precise position and the patient will be provided with a perfect orthodontic result within several weeks.
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Liauh W. Wayne
O'Connor Cary E.
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