Abstract: Objective To explore the influence of the clamping distance on the inclination angle of duplicated trace on convex tooth key. Method Convex tooth key models of same slope length but different tooth slope angles were made with aluminum plate. The duplication of these model keys with two clamping distances was simulated. The change of the inclination angles of duplicated trace was summarized. Results The inclination angles of duplicated trace are equal with two clamping distances. Conclusion The clamping distance does not affect the duplicated trace’s inclination angle.

Key words: font-size: 10.5pt, mso-bidi-font-size: 10.0pt, mso-fareast-font-family: 宋体, mso-font-kerning: 1.0pt, mso-ansi-language: EN-US, mso-fareast-language: ZH-CN, mso-bidi-language: AR-SA" lang="EN-US">convex tooth key, duplication, duplicated trace, inclination angle

摘要：  目的探索远近两种夹持方式对凸齿钥匙上仿形刀痕迹倾斜角度的影响。方法用铝板制作相同坡长、不同齿坡角的凸齿钥匙模型，在远近两种夹持方式下模拟增配过程，观察并总结钥匙上仿形刀痕迹倾斜角度的变化。结果两种夹持方式下的仿形刀痕迹倾斜角相等。结论远近夹持不影响仿形刀痕迹倾斜角度。

关键词: font-size: 10.5pt, mso-ascii-font-family: 'Times New Roman', mso-hansi-font-family: 'Times New Roman', mso-bidi-font-size: 10.0pt, mso-font-kerning: 1.0pt, mso-bidi-font-family: 'Times New Roman', mso-ansi-language: EN-US, mso-fareast-language: ZH-CN, mso-bidi-language: AR-SA">凸齿钥匙, 增配, 仿形刀痕迹, 倾斜角