Watanabe Takashi, Marchack Baldwin W, Takei Henry H
Clinical Professor, Meikai University School of Dentistry, Sakado, Saitama, Japan.
J Prosthet Dent. 2013 Dec;110(6):435-41. doi: 10.1016/j.prosdent.2013.09.003.
Orthodontic extrusion of nonrestorable teeth has been used for almost 20 years as an alternative to bone grafting in preparation for implant placement. Although this technique predictably creates bone and soft tissue, and improves the socket diameter and depth, most of the bone apposition occurs in the marginal alveolar and periapical areas of the extruded tooth. To create more labial bone, the standard orthodontic extrusion technique was modified to apply pressure on the hopeless tooth both coronally and palatally, which allowed bone at the site to develop apically and labially. Gingival thickness on the labial aspect was also increased, and the tissue biotype was improved. A clinical treatment is presented that illustrates the use of this technique.
近20年来,不可修复牙齿的正畸牵引一直被用作骨移植的替代方法,为种植体植入做准备。尽管该技术可预测地产生骨组织和软组织,并改善牙槽窝直径和深度,但大部分骨附着发生在牵引牙的牙槽嵴顶和根尖区域。为了形成更多唇侧骨,对标准正畸牵引技术进行了改良,在患牙的冠方和腭方施加压力,使该部位的骨向根尖和唇侧生长。唇侧牙龈厚度也增加,组织生物学类型得到改善。本文介绍了一个说明该技术应用的临床治疗病例。