BACKGROUND AND OBJECTIVES: Sinus augmentation is a procedure used for augmenting insufficient bone height that is often observed in the maxillary posterior areas. Many different techniques as well as bone graft regimens have been suggested for performing this procedure. It was the goal of this study to compare, clinically and histologically, two different composite grafting regimens used for sinus augmentation. MATERIAL AND METHODS: Five patients, needing a bilateral sinus augmentation to allow implant placement, were recruited for this study. Right sinuses were grafted with cortical bone (collected from overlying the sinus membrane) and bovine hydroxyapatite (HA), while the left side sinuses were grafted with overlying autologous bone plus a bioglass (BG) material. Bone core biopsies were taken at 6 months after sinus graft or at the time of implant insertion. A waiting period of 6 additional months was granted to allow healing, before prosthetic restoration and functional loading. The level of peri-implant bone was evaluated 12 months after loading. A comparative histomorphometric analysis was conducted and a statistical analysis was performed. RESULTS: All implants in both groups were functional after a 12-month loading period. No bone loss was observed radiographically or clinically in both groups. Histologic analysis revealed that both composite grafts had a high biocompatibility. In the bovine HA-containing group, minimal xenogenic graft absorption was noted. In contrast, BG group samples presented a high absorption rate with some remaining particles imbedded in new normal bone. CONCLUSIONS: Sinus augmentation using a combination of autogenous bone plus either bovine HA or BG is a predictable technique.
BACKGROUND AND OBJECTIVES: Sinus augmentation is a procedure used for augmenting insufficient bone height that is often observed in the maxillary posterior areas. Many different techniques as well as bone graft regimens have been suggested for performing this procedure. It was the goal of this study to compare, clinically and histologically, two different composite grafting regimens used for sinus augmentation. MATERIAL AND METHODS: Five patients, needing a bilateral sinus augmentation to allow implant placement, were recruited for this study. Right sinuses were grafted with cortical bone (collected from overlying the sinus membrane) and bovine hydroxyapatite (HA), while the left side sinuses were grafted with overlying autologous bone plus a bioglass (BG) material. Bone core biopsies were taken at 6 months after sinus graft or at the time of implant insertion. A waiting period of 6 additional months was granted to allow healing, before prosthetic restoration and functional loading. The level of peri-implant bone was evaluated 12 months after loading. A comparative histomorphometric analysis was conducted and a statistical analysis was performed. RESULTS: All implants in both groups were functional after a 12-month loading period. No bone loss was observed radiographically or clinically in both groups. Histologic analysis revealed that both composite grafts had a high biocompatibility. In the bovine HA-containing group, minimal xenogenic graft absorption was noted. In contrast, BG group samples presented a high absorption rate with some remaining particles imbedded in new normal bone. CONCLUSIONS: Sinus augmentation using a combination of autogenous bone plus either bovine HA or BG is a predictable technique.
Authors: Andreas L Ioannou; Georgios A Kotsakis; Tarun Kumar; James E Hinrichs; Georgios Romanos Journal: Clin Oral Investig Date: 2014-12-05 Impact factor: 3.573
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Authors: Bálint Trimmel; Noémi Gede; Péter Hegyi; Zsolt Szakács; Gyöngyi Anna Mezey; Eszter Varga; Márton Kivovics; Lilla Hanák; Zoltán Rumbus; György Szabó Journal: Clin Oral Implants Res Date: 2021-01-06 Impact factor: 5.977
Authors: Rafael Arcesio Delgado-Ruiz; Jose Luis Calvo-Guirado; Marcus Abboud; Maria Piedad Ramirez-Fernández; Jose Eduardo Maté-Sánchez; Bruno Negri; Alex Won; Georgios Romanos Journal: Int J Oral Sci Date: 2014-02-21 Impact factor: 6.344