Avaliação tomográfica de duas diferentes técnicas de preservação alveolar e do uso de um provisório pôntico ovóde imediato: estudo clínico-randomizado e controlado

Abstract

Objective: The aim of the present study was to evaluate whether a fixed ovate pontic provisional restoration is capable of reducing dimensional alterations of the alveolar ridge after tooth extraction when compared to other socket preservation techniques. Material and methods: Twenty-one patients with indication for maxillary anterior teeth extractions were randomly allocated into three different groups. PF group: socket closure using palatal pedicled subepithelial connective tissue flap; BCP group: socket filling with synthetic biphasic calcium phosphate bone substitute; and OP group: socket sealing with an ovate pontic. Cone-Beam Computed Tomography (CBCT) examinations were performed immediately after extraction and four months later. The dimensions measured were: alveolar ridge height in buccal, lingual and central positions and buccal and lingual width in three levels: cervical, medium and apical. The alveolar ridge height were measured at the buccal, lingual and central positions and buccal and lingual width were measured at the cervical, medium and apical levels. Results: All three groups had dimensional reduction after four months in both height and width, but only BCP group had a significant difference in cervical width (BC). There was no statistical difference in dimensional reduction between the groups studied. Conclusion: Considering that neither techniques proved to be better than the other, we concluded that the a fixed ovate pontic provisional restoration is a feasible and efficient technique due to its lower surgical morbidity and lower sensitivity; therefore it constitutes a good option for socket preservation following extraction.