Applications of Medpor Porous Polyethylene in Facial Bone Augmentation

Abstract

We report our experience in facial bone augmentation and nasal dorsal onlays with the Medpor porous polyethylene implant. Medpor is a highly stable, somewhat flexible alloplast which has been sintered to form a network of interconnecting pores. Its surface characteristics and porosity have been shown to promote rapid tissue ingrowth, vascularization, and fixation to the underlying bone. A total of 88 implants were placed in 68 patients during a 5-year period. Implants were used for augmentation in the chin (15), malar area (11), nasal dorsum (20), the orbit (19), and the cranium (23). The patients ranged in age from 10 to 76 years old. The etiologies of deformities were related to trauma (40), burns (17), aesthetic (8), and congenital (3). One malar implant became infected and was removed. There were no other implant-related complications. As a result of rapid soft-tissue ingrowth all implants became firmly fixed in position. No subsequent bone resorption, implant migration, or exposure were observed in our patient group. On the basis of these findings, we recommend the Medpor porous polyethylene implant as a dependable choice in the array of alloplastic materials available for facial reconstruction. Its remarkable stability, conductivity for tissue ingrowth, and ease of use allow for an accurate and reliable establishment of contour and symmetry in the craniofacial skeleton.