发明授权
- 专利标题: Fiber reinforced orthodontic appliance and method of manufacture
- 专利标题(中): 纤维增强矫正器具及其制造方法
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申请号: US903568申请日: 1992-06-24
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公开(公告)号: US5318440A公开(公告)日: 1994-06-07
- 发明人: Randall E. Adam , James D. Cleary , Jerold S. Horn , Said Pazirandeh
- 申请人: Randall E. Adam , James D. Cleary , Jerold S. Horn , Said Pazirandeh
- 申请人地址: MN St. Paul
- 专利权人: Minnesota Mining and Manufacturing Company
- 当前专利权人: Minnesota Mining and Manufacturing Company
- 当前专利权人地址: MN St. Paul
- 主分类号: A61C7/14
- IPC分类号: A61C7/14 ; A61C7/12 ; A61C7/28 ; A61C13/00 ; A61C7/00
摘要:
An orthodontic appliance such as a bracket is made of a polymeric material with reinforcing fiber structure embedded in the polymeric material. The reinforcing fiber structure includes relatively long filaments that extend about the perimeter of the bracket including the periphery of an archwire slot. In one embodiment, a method for making the bracket includes the steps of placing a tubular fiber preform in a mold assembly in an orientation aligned with a mesial-distal axis of the resultant bracket, and then closing the mold assembly in directions toward a central axis of the preform.
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