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Long-term observation of autotransplanted teeth with complete root formation in orthodontic patients
Yohei Watanabe1, Tamaki Mohri, Masaki Takeyama
1Division of Orthodontics, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan. yohei@dent.niigata-u.ac.jp
Introduction:
The objective of this investigation was to examine the factors influencing the long-term prognosis of autotransplanted teeth with complete root formation.
Methods:
Thirty-eight teeth, autotransplanted in 32 patients, were examined more than 6 years after transplantation. Periodontal health, condition of restoration, mobility, occlusal contact, level of gingival margin, and course of orthodontic movement were investigated clinically and with radiographs.
Results:
More than 6 years after autotransplanation, 33 teeth survived in 27 patients. The survival rate was 86.8% (mean observation time, 9.2 years). Abnormal findings were observed in 9 teeth, so the success rate was 63.1%. An inadequate root filling tended to give rise to abnormal findings.
Conclusions:
The success of autotransplantation of a tooth with complete root formation is affected by the quality of root filling. When possible, clinicians should consider autotransplantation before root formation is complete.
