PDF(Pubmed)
Abstract：
UNASSIGNED: This retrospective study assessed the risks and complications associated with dental implants after jaw surgery and radiotherapy for large defects, highlighting challenges for reconstructive surgeons and prosthetic dentists.
UNASSIGNED: From 2002 to 2008, National Taiwan University\'s Department of Maxillofacial Surgery used preoperative stereolithographic models and microvascular flaps for mandibular reconstruction in 18 patients with defects from ameloblastoma or advanced gingival cancer. They received free fibular flap grafts, followed by 46 osseointegrated dental implants. Patient outcomes, monitored for up to 60 months, were assessed through clinical and radiographic evaluations of implant success.
UNASSIGNED: The overall survival rate of dental implants following tumor surgery and radiotherapy was 84.8%. Seven implants failed due to peri-implantitis (3), tumor recurrence (2), and osteoradionecrosis (ORN) (2). The ameloblastoma group did not contribute to implant failure, with 4 implant failures in the stage III gingival cancer group, and 3 implant failures in the stage IV gingival cancer group.
UNASSIGNED: Following segmental mandibulectomy for mandible lesions, free fibular bone graft reconstruction restored mandible continuity, while subsequent dental implantation and overdenture fabrication restored occlusion and aesthetics for patients. Besides considering treatment strategies for ameloblastoma groups, similar approaches can be extended to oral cancer patients undergoing post-operative reconstruction. However, additional considerations (peri-implant soft tissue condition, tumor recurrence, ORN, etc.) are necessary for oral cancer patients predisposed to dental implant failure post-surgery.
UNASSIGNED: From 2002 to 2008, National Taiwan University\'s Department of Maxillofacial Surgery used preoperative stereolithographic models and microvascular flaps for mandibular reconstruction in 18 patients with defects from ameloblastoma or advanced gingival cancer. They received free fibular flap grafts, followed by 46 osseointegrated dental implants. Patient outcomes, monitored for up to 60 months, were assessed through clinical and radiographic evaluations of implant success.
UNASSIGNED: The overall survival rate of dental implants following tumor surgery and radiotherapy was 84.8%. Seven implants failed due to peri-implantitis (3), tumor recurrence (2), and osteoradionecrosis (ORN) (2). The ameloblastoma group did not contribute to implant failure, with 4 implant failures in the stage III gingival cancer group, and 3 implant failures in the stage IV gingival cancer group.
UNASSIGNED: Following segmental mandibulectomy for mandible lesions, free fibular bone graft reconstruction restored mandible continuity, while subsequent dental implantation and overdenture fabrication restored occlusion and aesthetics for patients. Besides considering treatment strategies for ameloblastoma groups, similar approaches can be extended to oral cancer patients undergoing post-operative reconstruction. However, additional considerations (peri-implant soft tissue condition, tumor recurrence, ORN, etc.) are necessary for oral cancer patients predisposed to dental implant failure post-surgery.
摘要：
■这项回顾性研究评估了颌骨手术和放射治疗大型缺损后与牙种植体相关的风险和并发症，强调重建外科医生和假肢牙医面临的挑战。
■从2002年到2008年，国立台湾大学颌面外科学系在18例成釉细胞瘤或晚期牙龈癌缺损的患者中使用术前立体光刻模型和微血管皮瓣进行下颌骨重建。他们接受了游离腓骨皮瓣移植,其次是46个骨整合牙种植体。患者结果,监测长达60个月，通过临床和影像学评估植入物的成功。
■肿瘤手术和放疗后种植牙的总生存率为84.8%。七个植入物由于种植体周围炎而失败（3），肿瘤复发（2），和骨坏死（ORN）（2）。成釉细胞瘤组未导致植入失败，在III期牙龈癌组中有4次植入物失败，IV期牙龈癌组3例植入失败。
■下颌骨节段切除术后，游离腓骨植骨重建恢复下颌骨连续性，而随后的牙种植和覆盖义齿制造恢复了患者的咬合和美学。除了考虑成釉细胞瘤组的治疗策略，类似的方法可以扩展到接受术后重建的口腔癌患者。然而,额外考虑(种植体周围软组织状况，肿瘤复发,ORN,等。)是口腔癌患者在手术后易患牙科种植失败所必需的。
■从2002年到2008年，国立台湾大学颌面外科学系在18例成釉细胞瘤或晚期牙龈癌缺损的患者中使用术前立体光刻模型和微血管皮瓣进行下颌骨重建。他们接受了游离腓骨皮瓣移植,其次是46个骨整合牙种植体。患者结果,监测长达60个月，通过临床和影像学评估植入物的成功。
■肿瘤手术和放疗后种植牙的总生存率为84.8%。七个植入物由于种植体周围炎而失败（3），肿瘤复发（2），和骨坏死（ORN）（2）。成釉细胞瘤组未导致植入失败，在III期牙龈癌组中有4次植入物失败，IV期牙龈癌组3例植入失败。
■下颌骨节段切除术后，游离腓骨植骨重建恢复下颌骨连续性，而随后的牙种植和覆盖义齿制造恢复了患者的咬合和美学。除了考虑成釉细胞瘤组的治疗策略，类似的方法可以扩展到接受术后重建的口腔癌患者。然而,额外考虑(种植体周围软组织状况，肿瘤复发,ORN,等。)是口腔癌患者在手术后易患牙科种植失败所必需的。
