| 摘要 |
<p>A bracket (1) for orthodontics is formed of a material obtained by polymerizing and setting a mixture comprising a multifunctional methacrylate and a multifunctional acrylate, a filler, and a polymerization initiator. The body of the bracket (1) has a thin layer of a synthetic resin material (2) which is partly soluble or swellable in a dental adhesive, laminated on the base surface thereof in such a manner that the composite resin material constituting the bracket body and the synthetic resin material constituting the thin layer (2) are mingled with each other at the boundary therebetween. The synthetic resin thin layer (2) is formed by polymerizing and setting a mixture, comprising a monofunctional methacrylate, a polymethacrylate or a copolymer thereof, and a polymerisation initiator. Alternatively, a composite resin material B obtained by polymerizing and setting a mixture comprising a multifunctional methacrylate, a monofunctional methacrylate, a silica filler, and a polymerization initiator, is laminated on the base surface of the bracket body. The brackets (1) have improved physical properties, are asthetically pleasing and the thin layer of resin material (2) provided on the surface of the bracket enables improved adhesion of the bracket (1) to a tooth (12).</p> |
