Histomorphometric analysis of XXXX maxillary sinus lift with a new bone substitute biocomposite: a preliminary report.

@entity1 @entity32 @entity2197 @entity281 @entity702 @entity77
PURPOSE: To analyze radiographic and histological outcomes of maxillary sinus floor augmentation using a @entity77 based allograft containing demineralized bone matrix particles. MATERIALS AND METHODS: Fifteen maxillary sinus lift procedures with simultaneous placement of @entity702 implants were performed in 12 @entity1 of both genders aged 36-71 years. Each sinus cavity was filled by the biocomposite. After 3 months of healing, all surgical sites were uncovered and bone biopsies were retrieved for undecalcified histology and histomorphometry. The ratio between the original and the grafted sinus height ( @entity2197 /OSH) was computed using a panoramic radiography taken immediately after surgery and at 3 months of healing, and the two ratios were compared by Wilcoxon signed-rank test. RESULTS: By 3 months, all implants were stable without clinical and radiographic signs of @entity281 . Significant changes in @entity2197 /OSH during healing were seen (2.7 +/- 0.6 initially vs. 2.6 +/- 0.5 after healing; p = 0.01). Histologic findings showed newly formed bone surrounding the residual grafted particles without @entity32 . At 3 months, mean regenerated bone density was 33.8 +/- 8.6%; marrow spaces amounted to 32.3 +/- 10.3%; residual graft was 33.9 +/- 9.0%. Similar histomorphometric and radiographic results were obtained independently from @entity1 age or sex. CONCLUSIONS: The analysed putty seems to be a safe and effective graft material for maxillary sinus floor augmentation by accelerating bone regeneration and thus reducing the healing time.
