Dentistry – Orthodontics – Bracket
Patent
1997-12-01
1999-05-11
Lucchesi, Nicholas D.
Dentistry
Orthodontics
Bracket
A61C3/00
Patent
active
059021047
ABSTRACT:
An orthodontic wire supporting device, for example, in the form of a bracket improved so that the bracket can be reliably held on teeth during a period of orthodontic treatment but easily detached from teeth, if it is desired, for exchange of the bracket with a fresh one. A base of the bracket destined to be bonded to the tooth plane by means of an adhesive layer is formed adjacent four corners with anchoring holes each defined by a truncated cone having its diameter on the upper side smaller than its diameter on the lower side of the base. The lower side of the base is coated with the adhesive layer, and then the base is pressed against the tooth plane with an appropriate force so that the adhesive layer is partially forced to pass through the respective anchoring holes and to project from the upper side of the base. The portion of the adhesive layer thus projecting from the upper side of the base appropriately bulges to form buttons each having a diameter substantially larger than the diameter of the associated anchoring hole. Once the adhesive layer has been solidified, these buttons come into engagement with the base so as to hold the adhesive layer on the base. Firmly bonding the adhesive layer to the tooth plane allows the bracket to be firmly held on the tooth plane, and cutting off of the buttons facilitates the bracket to be separated from the adhesive layer.
REFERENCES:
patent: 3765091 (1973-10-01), Northcutt
patent: 3932940 (1976-01-01), Andren
patent: 4063360 (1977-12-01), Waller
patent: 4094068 (1978-06-01), Schinhammer
patent: 4773857 (1988-09-01), Herrin
patent: 5267854 (1993-12-01), Schmitt
patent: 5435720 (1995-07-01), Riebschleger
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