Análise histomorfométrica da perfuração do leito receptor no processo de neoformação óssea do enxerto autógeno onlay corticomedular: estudo em humanos

Abstract

The objective of this research was to evaluate, histomorphometry, in humans, if there is influence of the method of perforate the recipient bed in the bone formation process autogenous corticomedullar onlay graft. After clinical and radiographic examinations were selected at the clinics of the Faculty of Dentistry, Federal University of Juiz de Fora, eight patients (2 men and 6 women, mean 56.9 years), with no physiological or organic changes, which had ridges atrophic in Jaw region, indicating autogenous bone graft onlay, and the donor area of the symphysis election. The patients underwent two surgical procedures, the first phase of grafting and the second time after six months, collecting material for histomorphometric analysis and implant placement. Each patient participated simultaneously in the two study groups, namely, test group (TG) in which the recipient bed has been perforated and control group (CG), the receiver bed has not received perforation for insertion of the graft block. The results showed that the microscopic characteristics of both groups showed presence of new bone formation, noting that there was no statistical difference between the groups (p = 0.046), in which an average of 5.74% (± 1.27) was assigned GT and 3.68 (± 1.82), the GC. It was concluded that, in the group of patients studied, the drilling of the recipient bed demonstrated influence on bone formation process of autogenous onlay graft corticomedullar.