Verweij Jop P, Moin David Anssari, Mensink Gertjan, Nijkamp Peter, Wismeijer Daniel, van Merkesteyn J P Richard
Resident, Department of Oral and Maxillofacial Surgery, Leiden University Medical Center, Leiden, The Netherlands.
Dentist, Department of Oral Function and Restorative Dentistry, Academic Center for Dentistry Amsterdam (ACTA), Research Institute Move, Amsterdam, The Netherlands.
J Oral Maxillofac Surg. 2016 Jun;74(6):1114-9. doi: 10.1016/j.joms.2016.01.030. Epub 2016 Jan 25.
Autotransplantation of premolars is a good treatment option for young patients who have missing teeth. This study evaluated the use of a preoperatively 3-dimensional (3D)-printed replica of the donor tooth that functions as a surgical guide during autotransplantation.
Five consecutive procedures were prospectively observed. Transplantations of maxillary premolars with optimal root development were included in this study. A 3D-printed replica of the donor tooth was used to prepare a precisely fitting new alveolus at the recipient site before extracting the donor tooth. Procedure time, extra-alveolar time, and number of attempts needed to achieve a good fit of the donor tooth in the new alveolus were recorded.
For each transplantation procedure, the surgical time was shorter than 30 minutes. An immediate good fit of the donor tooth in the new alveolus was achieved with an extra-alveolar time shorter than 1 minute for all transplantations.
These results show that the extra-alveolar time is very short when the surgical guide is used; therefore, the chance of iatrogenic damage to the donor tooth is minimized. The use of a replica of the donor tooth makes the autotransplantation procedure easier for the surgeon and facilitates optimal placement of the transplant.
对于有牙齿缺失的年轻患者，前磨牙自体移植是一种很好的治疗选择。本研究评估了术前使用供体牙齿的三维（3D）打印复制品作为自体移植过程中的手术导板。
前瞻性观察连续5例手术。本研究纳入了牙根发育良好的上颌前磨牙移植。在拔除供体牙齿之前，使用供体牙齿的3D打印复制品在受体部位制备一个精确适配的新牙槽窝。记录手术时间、牙槽外时间以及使供体牙齿在新牙槽窝中达到良好适配所需的尝试次数。
对于每例移植手术，手术时间均短于30分钟。所有移植手术的牙槽外时间均短于1分钟，供体牙齿在新牙槽窝中立即实现了良好适配。
这些结果表明，使用手术导板时牙槽外时间非常短；因此，供体牙齿受到医源性损伤的几率降至最低。使用供体牙齿的复制品使外科医生进行自体移植手术更加容易，并有助于移植牙的最佳植入。
