Guided bone augmentation around a titanium bone-anchored hearing aid implant in canine calvarium: an initial comparison of two barrier membranes.

摘要: Background: The placement of a bone-anchored hearing aid (BAHA) implant in young children may be hampered by the presence thin, poor-quality calvarial bone. use extraskeletal guided skull bone augmentation around titanium is one potential solution. Purpose: To compare effectiveness collagen membrane BioSISt (Cook Biotech Inc., Lafayette, IN, USA) and PGA/PLA barrier membrane, Osseoquest (W.L. Gore & Associates, Flagstaff, AZ, promoting formation, when combined with cancellous graft, canine calvarium. quality quantity tissue was compared. Materials Methods: A 4-mm BAHA placed cranial parietal 11 dogs. protruded from surface measured distance. Two groups, each three dogs, received an implant, either or membrane. Three dogs graft (positive controls), two only (negative controls). Samples were retrieved at 3, 6, 9 months after placement. Undecalcified histologic histomorphometric assessments made augmented thickness, gain factors calculated for sample group. Results: process osseointegration implants ongoing increased over time. Bone generation occurred both test membranes early trabecular that formed, matured, remodelled to compact months. samples showed superior compared exhibited thinner persistent inflammation. Quantitatively, statistically greater new contact area than positive negative controls, whereas did not. factor BioSiSt controls Conclusions: In this study, promoted formation polyglycolic/polylactic acid-based Further investigation warranted.