The present study showed that both the bone volume and BIC were higher in the control group. However, the failure rates of the implants were low in both irradiated groups. The PRP was a positive adjuvant in the osseointegration process.

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In order to warrant the blood supply to the nervous system it is necessary an efficient and intact blood circulation system, where the pattern of vascularization is of fundamental importance. In this way, we intend to demonstrate the tridimensional architecture and the pattern of vascularization in the region of the brain cortex of frontal and parietal lobes. There for, our proposal is to study the microvascularization of the rabbit cortex (Oryctologus cuniculus).The studies about blood irrigation of the brain regions are very important to verify the capilar nets and their relations with intensity of blood flux in specified regions of central nervous system.The articles about vascularization that uses models obtained by the injection of aloplastic materials whose viscosity is similar to the blood's that allows the difusion until the capilar net was introduced by Murakami (1971). Lametschwandter et al (1984), studied aspects of corrosion technique to microvascular models.

The intention of this paper is to comparatively demonstrate the tridimensional architecture of the microvascularization and the pattern of the microvascularization of testicles submitted to tumour cells implant, considering that supporting mechanisms of cell vitality depend on the vascular array.Testicles of 25 Wistar male rats were used. To proceed the implant of the tumour cells it was used a 50cc insulin syringe with short needle witch was introduced into the inferior apex of the organ. The animals were anaesthetised with 50% ethylic ether solution and 50% alcohol 96° by inhalation in proper chamber. The weight of the rats was verified every day to evaluate alterations due to tumour development and malignant evolution so it was possible to determine the exact day of sacrifice.The perfusion was performed trough the abdominal part of the aorta using a needle connected to a silicon tube.

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