Abstract
Background The aim of this study was to assess one-year implant survival after lateral window sinus augmentation using PRGF combined with various bone grafting materials. Material and Methods This was a retrospective chart review and radiographic analysis of patients that had undergone lateral window sinus augmentation with PRGF and had dental implants placed at least 6 months post augmentation. All implants included were followed up for at least one year after placement. Demographic, sinus and implant related characteristics (residual ridge height, sinus membrane perforation, type of graft material, implant length and width and ISQ at placement) were analyzed. Results A total of 31 patients with 39 sinus augmentations and 48 implants were included. The mean follow up was 22.8 ± 9.9 months. Implant survival was 95.8%, with 2 implants overall failing. Among all the variables assessed, the only one found to be associated with an increased risk for implant failure was the use of xenograft as bone grafting material in the sinus. Conclusions Within the limitations of this study, dental implants placed in maxillary sinuses grafted with PRGF in combination with bone grafting materials, exhibit high implant survival rates after at least one year follow up. Key words:PRGF, sinus graft, growth factors, implant survival, platelet concentrates.
Highlights
Implant supported dental reconstruction in the posterior maxilla can be challenging, primarily due to insufficient alveolar ridge dimensions following loss of teeth and subsequent maxillary sinus pneumatization
A recent study on bone quality outcomes following use of different grafting materials, reported that autogenous bone resulted in the highest amount of new bone formation and lowest amount of residual graft material compared to other options, whereas no difference was noted between allografts, xenografts and alloplasts [2]
Disadvantages associated with use of autogenous bone, including morbidity, limited availability and high volumetric changes [2], promoted the use of other biomaterials, often combined with platelet concentrates in an effort to enhance the regenerative outcome in maxillary sinus augmentation
Summary
Implant supported dental reconstruction in the posterior maxilla can be challenging, primarily due to insufficient alveolar ridge dimensions following loss of teeth and subsequent maxillary sinus pneumatization. Disadvantages associated with use of autogenous bone, including morbidity, limited availability and high volumetric changes [2], promoted the use of other biomaterials, often combined with platelet concentrates in an effort to enhance the regenerative outcome in maxillary sinus augmentation. The aim of the present retrospective study was to assess implant survival with at least one year follow up after lateral window sinus augmentation using PRGF combined with various bone grafting materials. The aim of this study was to assess one-year implant survival after lateral window sinus augmentation using PRGF combined with various bone grafting materials. Conclusions: Within the limitations of this study, dental implants placed in maxillary sinuses grafted with PRGF in combination with bone grafting materials, exhibit high implant survival rates after at least one year follow up
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