Method of affixing a dental appliance

A method of affixing a dental appliance to teeth;

• said dental appliance including both brackets that are to be affixed to said teeth and the remainder of said dental appliance, and said brackets are affixed to said teeth by indirect bonding comprising a plurality of steps of:
• a. making a cast of the teeth and mouth of the patient;
• b. temporarily arranging the brackets on said cast;
• c. folding over said brackets a layer of soft plastic and embedding said brackets in said plastic;
• d. removing said plastic and brackets and applying to the clean bracket bases a proper viscosity layer of a substantially uniform admixture of two reactants of a three-reactant system consisting essentially of a bonding resin that is hydrolysis resistant, that is partially polymerized and that will polymerize further in the presence of a catalyst and an initiator to bond in the presence of acids and enzymes in the mouth and selected from the class consisting of epoxy resin, urethane resin, methacrylate resin, vinyl ester resin, and acrylate resin;
• a catalyst that will affect polymerization of said bonding resin and selected from the class consisting of benzoyl peroxide, and methyl ethyl ketone peroxide;
• and an initiator selected from the class consisting of N,N-dimethyl-para-toluidine, N,N-dimethyl aniline, and cobalt naphthenate;
• said two reactants including said bonding resin and either one of said initiator or catalyst that would effect polymerization of said bonding resin;
• e. applying to the surfaces of said teeth after said teeth have been cleaned and dried, a substantially uniform admixture of two reactants of said three-reactant system;
• said second two reactants including said bonding resin and the other of said catalyst or initiator that would effect polymerization of said bonding resin;
• f. inserting said plastic with said brackets in place and with said resin, catalyst and initiator intermediate said bases of said brackets and said teeth such that said brackets are emplaced adjacent the surface of said teeth and polymerization of said bonding resin is effected to adhere said brackets on to said teeth, and leaving said plastic in place for a period of at least several minutes to twenty minutes;
• g. removing said plastic to leave said brackets in place on said teeth with said brackets bonded directly to said teeth;
• and
• h. allowing sufficient time for cure of said bonding resin and thereafter affixing the remainder of said dental appliance.