Avaliação do volume ósseo para enxerto da tuberosidade da maxila

Abstract

Autogenous bone represents the gold standard for the reconstruction of bone defects due to its osteoinduction, osteoconduction and osteogenesis properties. Quality and quantity are key factors that must be considered when choosing a graft donor site. Intraoral graft donor regions, despite providing a smaller amount of graft, are considered an alternative for a variety of reconstructive procedures for minor defects in the maxillofacial region. Among the intraoral graft donor regions, the maxillary tuberosity has gained prominence due to the amount of graft that can be removed from this site with a lower degree of comorbidity. In this sense, the present study aims to evaluate the bone volume in the maxillary tuberosity from cone beam computed tomography (CBCT) images and to analyze whether there is a correlation between the BV/TV variable between groups, sides and age . Included in this study were 60 CBCT images of the maxillary tuberosity of 30 men and 30 women from both sides. The images were evaluated with the aid of the ImageJ Software, which providedthe bone volume rate (BV/TV) of each analyzed region. The data were tabulated and submitted to statistical analysis comparing the values of the BV/TV rate in relation to sex, age and sides. It found a significant effect of age (F = 8.06, p = 0.0059) and a significant interaction between age and sex (F = 4.15, p = 0.045). There was no significant effect of lateralityon the variation of the BV/TV rate (F = 0.98, p = 0.325). It is concluded that the amount of bone in the maxillary tuberosity represented by the BV/TV rate is directly related to sex and age, and that a higher proportion of bone volume can be found in males and a lower proportion in older women. Although CBCT images when evaluated in ImageJ Software can provide a BV/TV bone volume ratio in the maxillary tuberosity, further studies should be carried out in order to describe other parameters that may directly interfere with the proportion of bone available in this region.