Retrospective study of intentional tooth replantation

Abstract

This retrospective study investigated the effects of preoperative radiographic characteristics and the causes of intentional replantation on treatment outcome. The records of fifty patients who had undergone intentional replantation at the dental clinic of Chonnam National University from 2009 to 2016 were examined. Age, sex, tooth location, diagnosis, and preoperative radiographs were analyzed using PACS (Picture Archiving Communication System) and IBM SPSS Statistics 23.0. Eighteen (36%) subjects were female and 32 (64%) were male. The mean age at the time of surgery was 39.1 years (±16.4), and the mean periodic follow-up period was 18.8 months (±15.6). Pulp and periapical diseases were the most common cause of disease (31 cases). The preoperative radiologic characteristics were 9 cases (18%) without lesion, 2 cases (4%) with apical periodontal ligament (PDL) space widening, 29 cases (58%) with periapical rarefaction, 10 cases (20%) with periradicular rarefaction and 28 cases (56%) of condensing osteitis. The survival rate of the intentionally replanted teeth was 78% and the failure rate was 22%. The expected survival time of the teeth was 44.1 months. Data were evaluated according to frequency distribution and the chi-squared test. Fisher’s exact test was used to investigate statistical significances (p < 0.05) between healed tooth versus extracted tooth after intentional replantation. There was no statistically significant difference between the success rate and failure rate of intentional replantation based on age, gender, teeth, diagnosis, filling material, fixation method, preoperative proximal radiolucency or lesion size.