Abstract
A follow-up study of autologous tooth transplantation
A follow-up study was conducted to determine the current status of autologous tooth grafting performed at author’s institution and to identify areas for improvement. The scope of the survey was set as autologous tooth transplantation performed during the period from April 2005 to March 2018 and the subjects included 52 people and 52 teeth received autologous tooth transplantation. The average age was 44.6 years and the average duration of observation 4.1 years. Most of the reasons for tooth extraction in the recipients that required autografting were due to caries lesions. Most of the donors were mandibular third molars (69.2%) and most of the recipients were mandibular molars (78.8%). The 5-year survival rate by the Kaplan-Meier method was 89.2%: 6 teeth were lost. The state of engraftment at the time of tooth grafting had the greatest impact on the postoperative course, including the loss of teeth. In the analysis of risk factors, a significant difference (p＜0.05) was found for smoking in the log-rank test results. On the other hand, there were no significant differences in gender, age (＞50 years and ＜50 years), or root morphology (single root and double root). In our hospital, 77 autologous teeth were transplanted during the same period, which averaged 1.5 teeth per year per dentist. Autologous tooth grafting is a less common procedure in dentistry.
