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    • 7. 发明申请
    • Method of orienting an orthodontic appliance to a tooth
    • 将矫正器具定向到牙齿的方法
    • US20050130095A1
    • 2005-06-16
    • US10734323
    • 2003-12-12
    • Richard RabyOliver PuttlerNicholas Stark
    • Richard RabyOliver PuttlerNicholas Stark
    • A61C7/00A61C7/14A61C3/00
    • A61C7/146A61C7/002
    • 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.
    • 通过在器具和牙齿之间提供第一相对定向并且在虚拟三维中在器具的基部和牙齿之间限定第一组假想参考线或光线来选择正畸器具和牙齿的相对定向 空间。 然后确定每条射线的距离。 接下来,将器具和牙齿的相对定向改变为第二方向。 在器具和牙齿之间限定第二组光线,并确定每条光线的距离。 然后在所确定的距离上进行数学计算,以帮助确定第一方向或第二方向是否提供了在器具的基座和牙齿表面之间更好的配合。