Maxila atrófica – Uma série de casos de reconstruções ósseas para reabilitação implantossuportada

Abstract

Introduction: Patients who present partial or total edentulism may present atrophic maxilla. The aim of this article is to compare tomographically the bone gain in reconstructive surgeries in the atrophic maxillary anterior region peformed with association of autogenous graft and xenogenous graft. Methodology: A prospective comparative study of the series of cases, in which five patients diagnosed with atrophic maxillaries were submitted to the grafting technique with particulate autogenous bone combined with xenogene bone for posterior rehabilitation with implants. Three CT scans were performed: preoperative, immediate postoperative and six months after surgery. The sites of choice for girth thickness and density were determined by locating the nasopalatine foramen. It was located 12 mm to the right and left, corresponding approximately to units 12 and 22, which are considered the measurement sites in the sagittal section. The points chosen were those that were 2 mm (P1) and 6 mm (P2) below the alveolar crest. The level of bone gain and the rate of resorption were evaluated using the Icat Vision® Software. Bone density was calculated using the DentalSlice® software. Results: At the two evaluated sites (P1 and P2), bone gains of 211% and 253% were obtained, respectively, after six months of reconstruction. Comparing the immediate and late postoperative, an 8% resorption in P1 and a bone gain of 7% in P2 were observed. The main type of bone obtained surgically after 6 months was bone type III. Conclusion: Atrophic maxillaries can be reconstructed with clinical success through the combined technique of autogenous and xenogenic bone grafting.