Abstract
BackgroundThe purpose of this study was to evaluate the vertical new bone formation induced by sputtered HA-coated titanium implants (HA-coated) compared with sandblasted acid-etched titanium implants (noncoated) in a rabbit calvarial model.
Materials and methodTwenty HA-coated and 20 noncoated titanium implants were divided equally into four groups as HA-coated implant (HA); noncoated implant (NC); HA-coated implant with membrane (HA/M); noncoated implant with membrane (NC/M). All implants were placed 5 mm above the original bone (OB). Collagen membranes were placed over the implants in HA/M and NC/M groups. The animals were sacrificed at 4 weeks (n=5) and 8 weeks (n=5). Vertical bone height above OB (VBH, mm) and augmented bone area (ABA, mm(2)) were analyzed histologically and radiographically.
ResultsAt 4 weeks, VBH reached significantly higher level in HA/M group compared with other three groups (p<0.05). At 8 weeks, significant difference was detected between HA/M and NC groups (p<0.05). At 4 and 8 weeks, ABA in HA/M group was significantly larger compared with other three groups (p<0.05).
ConclusionThe present results indicated that sputtered HA-coated titanium implant together with collagen membrane could be a novel and effective approach for vertical bone augmentation. (c) 2014 Wiley Periodicals, Inc. J Biomed Mater Res Part B: Appl Biomater, 103B: 1700-1708, 2015.