Dentistry – Orthodontics – Bracket
Patent
1978-03-06
1980-05-06
Peshock, Robert
Dentistry
Orthodontics
Bracket
433228, A61C 700
Patent
active
042009804
ABSTRACT:
A composition and method for affixing a dental appliance to the teeth characterized by effecting a layer of catalyst that will effect polymerization of a bonding resin on the surface of the teeth to which the dental appliance is to be affixed, after the surface has been cleaned and dried so as to effect a good bond; effecting a layer of the catalyst on the base of at least a portion of the dental appliance that is to be bonded to the teeth after the base has been cleaned and dried so as to effect a good bond; positioning the base of the portion of the dental appliance adjacent the teeth after resin has been applied intermediate the two layers of catalyst on the base and on the surface of the tooth. After a predetermined cure time, the remainder of the dental appliance is affixed in place. The bonding resin is selected from the group consisting of epoxy, per se or capped with hydrolysis-resistant moiety; urethane; cyano-acrylate; methacrylate; vinyl ester; and acrylate. Appropriate catalyst such as benzoyl peroxide and initiator are preferably employed for effecting polymerization. Also, critical viscosity of the bonding resin in the range of 25,000-40,000 centipoises, as measured with a Brookfield Niscometer at 50.degree. C., is employed, with filler if necessary, to obtain the desired wettability and prevent "creep" during gellation. Also disclosed are preferred constituents and steps in the method, including the indirect bonding method.
REFERENCES:
patent: 3955282 (1976-05-01), McNell
patent: 4010545 (1977-03-01), Kilian
Advance Dental Corporation
Peshock Robert
Wofford Wm. T.
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