He Wei, Tian Kaiyue, Xie Xiaoyan, Wang Enbo, Cui Nianhui
Department of Oral and Maxillofacial Surgery, Peking University School and Hospital of Stomatology, Beijing, China.
Department of Oral and Maxillofacial Plastic and Traumatic Surgery, Capital Medical University School of Stomatology, Beijing, China.
PeerJ. 2018 Nov 22;6:e5939. doi: 10.7717/peerj.5939. eCollection 2018.
BACKGROUND/AIM: Autotransplantation of teeth is a method to restore the missing teeth and computer-aided techniques have been applied in this field. The aim of this study was to describe a novel approach for computer-aided autotransplantation of teeth and to preliminarily assess its feasibility, accuracy, and stability.
Eight wisdom teeth with complete root formation of eight adult patients were autotransplanted. Individual replicas of donor teeth with local splints, surgical templates, and arch bars were virtually designed and fabricated using three-dimensional printing, these were then applied in the autotransplantation surgeries. Clinical and radiological outcomes were observed, the extra-alveolar time, success rate, and 1-year survival rate were analyzed, and accuracy and stability of this approach were evaluated.
The extra-alveolar time of donor teeth were less than 3 min. The average follow-up duration was 2.00 ± 1.06 years. All autotransplanted teeth showed normal masticatory function. Ankylosis was found in one patient, and the overall success rate was 87.5%, whereas the 1-year survival rate was 100%. Linear differences between the designed and the immediate autotransplanted positions at crowns and apexes of the donor teeth were 1.43 ± 0.57 and 1.77 ± 0.67 mm, respectively. Linear differences between immediate and the stable positions at crowns and apexes of the donor teeth were 0.66 ± 0.36 and 0.67 ± 0.48 mm, respectively.
The present study illustrated the feasibility, clinical satisfied accuracy, and stability of a novel approach for computer-aided autotransplantation of teeth. This new approach facilitated the surgical procedure and might be a viable and predictable method for autotransplantation of teeth.
背景/目的：牙自体移植是一种修复缺失牙的方法，计算机辅助技术已应用于该领域。本研究的目的是描述一种计算机辅助牙自体移植的新方法，并初步评估其可行性、准确性和稳定性。
对8例成年患者的8颗牙根完全形成的智齿进行自体移植。使用三维打印技术虚拟设计并制作带有局部夹板、手术模板和牙弓杆的供体牙个体复制件，然后将其应用于自体移植手术中。观察临床和影像学结果，分析牙槽外时间、成功率和1年生存率，并评估该方法的准确性和稳定性。
供体牙的牙槽外时间少于3分钟。平均随访时间为2.00±1.06年。所有自体移植牙均表现出正常的咀嚼功能。1例患者出现牙根粘连，总体成功率为87.5%，而1年生存率为100%。供体牙冠部和根尖部设计位置与即刻自体移植位置之间的线性差异分别为1.43±0.57和1.77±0.67毫米。供体牙冠部和根尖部即刻位置与稳定位置之间的线性差异分别为0.66±0.36和0.67±0.48毫米。
本研究说明了计算机辅助牙自体移植新方法的可行性、临床满意的准确性和稳定性。这种新方法简化了手术过程，可能是一种可行且可预测的牙自体移植方法。
