Autotransplantation of ectopic teeth: a retrospective study of 284 teeth

摘要

Objective: To determine outcome in a series of autotransplanted teeth undertaken by the same surgeon over 2 5 years. Methods: This retrospective study examined the outcome of autotransplantation of 284 ectopic teeth - mainly maxillary canines - in a cohort group of 235 patients with a follow-up of between 0.5 and 19 years (median 2.0). Indication for autotransplantation was severe tooth ectopia when orthodontic repositioning was considered unsuitable clinically or unacceptable to the patient. The technique involved minimal instrumentation and using a multibond appliance for stabilisation and fine tuning of tooth position. Outcomes were measured at the last clinic follow-up. Results: Patients were aged between 9 and 51.8 years (median 15.4). Autotransplanted teeth comprised 254 maxillary canines, four mandibular canines, nine maxillary incisors, one mandibular incisor, five maxillary premolars and 11 mandibular premolars. Apices were fully formed in 202 teeth (71.0 %). Only 11 transplants were known to fail, but including loss to follow-up, there was a 96% 5-year survival and 65% 10-year survival. Of the survival group, 180 (66.9%) were vital with no root resorption, 57 (21.2%) were non-vital with normal radiographic appearances and 32 (11.9%) were root filled with normal radiographic appearances. There was no significant difference in survival between open and closed apices (P = 0.90). Of the failed group, four (36.4%) had root resorption requiring extraction and seven (63.6%) were lost. Conclusion: The findings are consistent with other studies in the field. Tooth transplantation should be considered when planning rehabilitation for patients presenting with ectopic teeth.