PTH and Osteopenia: Orchiectomized animals showed less percent bone volume and separation between trabeculae and greater porosity of trabeculae, because they were induced to osteopenia; however, the use of topical Biogran® + PTH helped discretely in the reconstruction of the alveolus, showing similar results to the SHAM CLOT group, where even for some parameters the treated ORQ group was superior to untreated orchiectomized rats (higher Tb.N and less Po.tot).