Clinical outcome of intentional replantation with preoperative orthodontic extrusion: a retrospective study

Y. H. Choi, J. H. Bae, Y. K. Kim, H. Y. Kim, S. K. Kim, B. H. Cho

Research output: Contribution to journalArticlepeer-review

41 Citations (Scopus)


Aim: To evaluate retrospectively the clinical outcomes of intentional replantation (IR) of teeth in terms of tooth survival and periradicular healing and to investigate their prognostic factors. Methodology: Two hundred and eighty-seven teeth treated by IR were analysed retrospectively. Clinical outcomes between the cases with preoperative orthodontic extrusion for 2-3 week and those without extrusion were analysed. The outcomes of IR were determined by clinical and radiographic evaluation. Tooth survival and periradicular healing estimates were compared using Kaplan-Meier analysis. The contribution of a patient's age and gender, tooth type and location, and preoperative orthodontic extrusion was investigated using the multivariate Cox proportional hazard model. Results: The mean follow-up period was 25.4 ± 9.3 months. The overall success rate of IR was 89.5% based on periradicular healing. The overall survival rate was 95.1%. The survival rates were 91.2% for the teeth extracted without extrusion and 98.1% for those extracted with extrusion. Amongst the variables tested, only the extraction technique with preoperative orthodontic extrusion significantly affected the survival rate (P = 0.016). Other prognostic variables, such as age and gender, tooth type and location, did not affect the survival of intentionally replanted teeth. Conclusions: Intentional replantation was a viable treatment option for teeth with previously failed nonsurgical root canal treatment, regardless of a patient's age and gender, and tooth type and location. Preoperative orthodontic extrusion for 2-3 weeks reduced root resorption and tooth fracture and can be recommended to enhance the outcome of IR.

Original languageEnglish
Pages (from-to)1168-1176
Number of pages9
JournalInternational Endodontic Journal
Issue number12
Publication statusPublished - 2014 Dec 1


  • Extraction technique
  • Intentional replantation
  • Orthodontic extrusion
  • Success estimate
  • Survival estimate

ASJC Scopus subject areas

  • Dentistry(all)


Dive into the research topics of 'Clinical outcome of intentional replantation with preoperative orthodontic extrusion: a retrospective study'. Together they form a unique fingerprint.

Cite this