发明名称 |
Method of orienting an orthodontic appliance to a tooth |
摘要 |
The relative orientation of an orthodontic appliance and a tooth is selected by providing a first relative orientation between the appliance and the tooth, and defining a first set of hypothetical reference lines or rays between the base of the appliance and the tooth in virtual three-dimensional space. The distance along each ray is then determined. Next, the relative orientation of the appliance and the tooth is changed to a second orientation. A second set of rays is defined between the appliance and the tooth, and the distance along each ray is determined. A mathematical computation is then carried out on the determined distances in order to help determine whether the first orientation or the second orientation provides a better fit between the base of the appliance and the tooth surface.
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申请公布号 |
US7210929(B2) |
申请公布日期 |
2007.05.01 |
申请号 |
US20030734323 |
申请日期 |
2003.12.12 |
申请人 |
3M INNOVATIVE PROPERTIES COMPANY |
发明人 |
RABY RICHARD E.;PUTTLER OLIVER L.;STARK NICHOLAS A. |
分类号 |
A61C3/00;A61C7/00;A61C7/14 |
主分类号 |
A61C3/00 |
代理机构 |
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