Functional Evaluation of Implant-supported Prostheses following Mandibular Reconstruction by Combination with Titanium Mesh Tray and Iliac Particulate Cancellous Bone and Marrow

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  • チタンメッシュトレーと腸骨骨髄海綿骨細片移植による下顎骨再建後のインプラント義歯の機能評価

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The purpose of this study was to evaluate the clinical results of implant-supported prostheses following mandibular reconstruction for segmental resected defect. Six patients with mandibular segmental defect were studied in this series. All patients underwent mandibular reconstruction by combination with titanium meshtray and graft of particulate cancellous bone and marrow (PCBM) harvested from bilateral posterior iliac crests. About 6 months later, the titanium mesh tray was removed and fixtures were installed in the non-resected and/or reconstructed mandible. About three to four months later, the abutments were connected. Approximately two weeks after the abutment connection, implant-supported prostheses were fabricated. Masticatory function and speech function were evaluated one month after placement of the implant-supported prostheses. Resorption of the marginal bone around the fixtures was evaluated annually by means of radiographic images.<br/> There was no serious postoperative complication related to the mandibular reconstructive surgery.Twenty-seven fixtures except two were osseointegrated. All patients wore implant-supported overdentures or fixed prostheses, and excellent occlusal reconstruction was completed. There was no complication during the follow-up period.<br/> These results suggest that implant-supported prosthesis following mandibular reconstruction by combination with titanium mesh tray and iliac PCBM graft is useful for oral rehabilitation in patients with mandibular segmental defect.

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