Dos Santos Pâmela Letícia, Santiago Joel Ferreira, Ponzoni Daniela, Aranega Alessandra Marcondes, Queiroz Thallita Pereira, Filho Osvaldo Magro, Garcia Idelmo Rangel
Department of Surgery and Integrated Clinics, School of Dentistry, Univiversidade Estadual Paulista, Araçatuba, Araraquara, São Paulo, Brazil.
J Craniofac Surg. 2011 Nov;22(6):2337-40. doi: 10.1097/SCS.0b013e318232a81c.
The aim of this study was to evaluate the bone repair process in the maxillary sinus in monkeys treated with high-density porous polyethylene (Medpor)
Four capuchin monkeys (Cebus apella) were submitted to bilateral horizontal osteotomies in the anterior wall of the maxillary sinus and divided into 2 groups: control group, left side with no implants, and porous polyethylene group, right side with Medpor. After a period of 145 days after implant placement, the maxillae were removed for histologic and histometric analyses.
Bone repair in osteotomized areas took place by connective tissue in 58.5% and 58.7% in the control group and the porous polyethylene group, respectively. In the contact surface with Medpor, bone repair occurred in 41.3%.
Medpor was not reabsorbed within the period of this study and allowed bone repair surrounding it. The porous polyethylene constitutes a feasible alternative for bone defect reconstruction.
