Premolar autotransplantation in juvenile dentition: Quantitative assessment of vertical bone and soft tissue growth

Publication date: Available online 22 February 2017
Source:Oral Surgery, Oral Medicine, Oral Pathology and Oral Radiology
Author(s): Inessa Michl, Dirk Nolte, Claudia Tschammler, Martin Kunkel, Robert Linsenmann, Johannes Angermair
ObjectivePremolar autotransplantation represents an effective therapeutic option for the treatment of juvenile dentition with either aquired or congenital hypodontia. The objective of this prospective clinical study was to quantitatively assess bone and soft tissue levels after autogenous premolar transplantation by clinical and radiographic parameters.Study DesignIn the study 26 premolars were transplanted in 20 patients after traumatic tooth loss (n=16) or congenital aplasia (n=10) in the anterior maxilla. Based on standardized photographic documentation, the relative soft tissue level was measured in comparison to the healthy adjacent teeth. Radiographic findings included the evaluation of root resorption, pulp canal obliterations and the relative bone height.ResultsAverage survival rate of transplanted premolars (n = 26) was 100% over a follow-up period of 29 months (range 10-60 months). The relative soft tissue level significantly increased by +1.1 mm (p<0.05). Radiographs showed the tendency to vertical bone growth. Continuous root development and signs of pulpal healing were observed postoperatively on 18 transplants (69.2%).ConclusionsAutogenous premolar transplantation represents a safe method to ensure functional and aesthetic rehabilitation in the anterior maxilla irrespective of the nature of tooth loss. ClinicalTrials.gov: NCT02740907



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