Intentional replantation of periodontally involved hopeless teeth: a case series study

Objectives To explore the clinical effect, the healing modes, and the potential influence factors of intentional replantation for periodontally hopeless teeth in combination with regeneration techniques. Materials and methods Intentional replantation was operated on forty-eight periodontally hopeless teeth from forty-eight patients. The clinical indexes and the X-ray films were recorded during the follow-up period of 18 months. The Wilcoxon signed-rank test or the paired T test was adopted to carry out the statistical analysis. Results The overall survival rate at the ninth month was 95.8% and declined to 91.7% at the eighteenth month. The improved rate of the mobility was 89.1% at the ninth month and the ankylosis percentage was 77.3% at the eighteenth month. The survival rate and mobility-improved rate of anterior teeth were both better than that of posterior teeth. Probing depth and bone loss decreased while ginginval recession increased ( P < 0.05). Smoking had an adverse effect on both mobility improvement and bone gain ( P < 0.05). Conclusions Intentional replantation for periodontally hopeless teeth could achieve favorable outcomes through a reasonable healing mode of tooth ankylosis. Strict control of infection and smoking could improve the success rate of this procedure. Clinical relevance To provide additional treatment for allowance of flexible options when patients and dentists are faced with periodontally hopeless teeth.