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4826430Adhesive primer for alumina brackets1989-05-02Chen et al. 4797095Orthodontic hook mounting1989-01-10Armstrong et al. 4674978Orthodontic appliance1987-06-23Acevedo433/8 4669980Orthodontic appliance1987-06-02Degnan 4531911Combination single/twin edgewise orthodontic bracket1985-07-30Creekmore ...