Abstract
A prospective experimental randomized controlled study with 12 male dogs will be done. The first surgical step will be the billateral mandibular pre-molars and molars extractions. In a second moment, five circunferential defects will be performed with a 6-mm-trephine in one site of the mandible. These defects will be grafted with BioOss Block", BioOss Collagen", BioOss" in granules, autog…