舌侧托槽的数字化3D打印技术

目的探索一种新型的个性化、精密、底板更吻合的舌侧托槽设计和直接制造技术,为临床获得更好的矫形效果提供实验依据。方法通过CT扫描获得牙模数据,经反求技术转化成牙齿计算机辅助设计(computer aided design,CAD)模型;在CAD上设计个性化舌侧托槽;用选区激光熔化快速成型3D打印设备制造舌侧托槽。结果 3D打印技术制造的个性化舌侧托槽底板能够与患者牙齿的舌侧面精密吻合,通过转换托盘直接将托槽粘接在预先设计的位置上,消除传统舌侧托槽需要依赖粘接剂厚度补偿的弊端。结论通过激光选区熔化3D打印技术可初步制造和设计个性化舌侧托槽。

Three-dimension digitized printing technology of lingual orthodontic brackets

Objective To design anti manufacture individual and precise lingual brackets with more coincident sur- face on lingual profile of the tooth inner surface. Methods A new design and manufacturing technology of individual lin- gual bracket was presented. First, got the CT seamling data of teeth, and then transformed the data into the dental CAD （ computer aided design） models by reverse technology. Second, designed customized bracket based on the CAD model. Third, used 3-dimension （3D） printing equipment of selective laser inching to manufacture brackets. Results The 3D printing technology successfully manufactured individual lingual bracket backplane directly through the conversion of the tray bracket bonding in the pre-designed position, obtained individual bracket base plate with the teeth of the lingual sur- face precision of the anastomosis, and eliminated the drawbacks of traditional tongue side of the bracket needs to rely on the adhesive thickuess compensation. Conclusion The 3D digitized printing technolu~＇ could design and manufacture individual lingual orthodontic bracket.