数字化口腔修复(13)——消除前牙黑三角的数字化笑设计(附病例报告)

Digital restorative dentistry and prosthodontics(13)——Digital smile design of eliminating the black triangle in anterior teeth( a case report)

目的:通过计算机辅助设计,改变修复体邻面接触点的位置,并进行修复前的数字化笑设计,以获得与患者良好的沟通。方法:利用Photoshop CS6软件和CEREC誖AC Omnicam 4.2软件分别对1例冠折且伴有慢性牙周暴露"黑三角"的患者行全瓷冠修复和二维/三维数字化笑设计。结果:经过患者和口腔医师共同比较二维和三维数字化笑设计的虚拟图像,双方达成共识,即牙齿的基本形态由三角形改为方形,消除了"黑三角",修复后效果最为满意。结论:医患双方共同参与的修复前二维和三维数字化笑设计是行之有效的沟通渠道和手段,同时通过移动邻面接触点改变牙齿基本形态的方法有利于消除前牙"黑三角"。

Objective：To use computer aided design（CAD） changing the location of proximal contact point in crowns and pre-restorative digital smile design in order to get better communication and satisfaction with the patients. Method：One patient with anterior teeth broken and chronic periodontitis with the black triangle, would be proceed in all-ceramic crown restoration by two-dimensional digital smile design（2-DDSD） and three-dimensional smile designs（3-DDSD） via Photoshop CS6 software and CEREC 誖 AC Omnicam 4.2 software. Result：Via comparison of the virtual images of 2- and 3-DDSD,both patient and dentist reached consensus on the images of the teeth morphology which were changed from triangle to square. Because of that the black triangles in anterior teeth were disappeared completely, this restoration was the most satis-faction. Conclusion：2- and 3-DDSD were effective communication channel and method. Meanwhile, changing the teeth morphology via moving proximal contact point contributed to eliminate the black triangle in anterior teeth.