Survival and success rates of autotransplanted premolars: A prospective study of the protocol for developing teeth

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The aim of this prospective clinical trial was to examine the predictability of the protocol for premolar transplantation when applied by an inexperienced surgeon. Additional objectives were to examine the hard and soft tissues and to compare the findings with control premolars and also to record the patients' opinions of the treatment provided.


The sample comprised 23 consecutively transplanted developing premolars in 19 patients. Their mean age at surgery was 12 years 8 months (range, 9 years 10 months-17 years). The mean observation time was 35 months (range, 6-78 months). Plaque accumulation, pocket depth, gingival recession, mobility, and pulp sensitivity were recorded for the transplanted and the control teeth. Standardized radiographs were used to examine hard tissues and crown-to-root ratios. Questionnaires were used to register each patient’s opinion about the treatment and its outcome.


The survival rate was 100%, and the success rate was 91.3%. No significant differences were recorded between transplanted and control teeth. The patients' perceptions of the surgical management and the treatment outcome were favorable.


The protocol for autotransplantation of developing premolars in growing patients was successfully adopted, regardless of lack of previous experience with this type of treatment.

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