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目的 :探讨采用闭合式上颌窦提升术进行上颌窦底提升种植修复的效果及临床操作特点。方法:对58例缺牙区牙槽嵴距上颌窦底5—8mm的患者经牙槽嵴顶入路行闭合式上颌窦底提升术,共植入73枚种植体并完成修复。观察方法为临床检查和口腔x线片检查。结果:57例患者在术后6—10个月完成义齿修复。随访时间2—5年,平均37.9个月,义齿修复后种植体无松动及脱落。1例患者1枚种植体无骨结合,失败脱落。术后口腔全景X线片检查72枚种植体区窦底高度平均提升(3.59±0.47mm),种植体形成良好的骨结合。讨论:闭合式上颌窦底提升技术是一种改良的上颌窦底提升技术,具有:手术创伤小、并发症少、骨冲压窦底同时可挤压松质骨成致密骨质,增加种植体的初期稳定性等优点。结论:闭合式上颌窦底提升术较传统的开放式上颌窦提升术简化了手术步骤,缩短了手术时间,减轻了患者术后反应,是一种简单有效的窦底提升技术。
Objective: To investigate the effect and clinical operation of closed maxillary sinus augmentation for maxillary sinus floor elevation implant repair. Methods: A total of 73 implants were implanted and repaired in 58 patients with alveolar ridge whose maxillary sinus 5-8mm in length from the alveolar ridge were closed by alveolar crest. Observation methods for clinical examination and oral x-ray examination. Results: 57 patients completed the denture repair 6-10 months after surgery. Follow-up time of 2-5 years, an average of 37.9 months after the denture prosthesis without loosening and loss. One patient had one implant without bone union and failed to fall off. Postoperative oral panoramic X-ray examination of 72 implants improved sinus height (3.59 ± 0.47mm), and the implant formed a good bone union. Discussion: The closed maxillary sinus floor lifting technique is a modified maxillary sinus floor lifting technique, which has the following advantages: less trauma and fewer complications. Bone stamping sinus floor can squeeze cancellous bone into dense bone at the same time, Initial stability and so on. Conclusion: Compared with the traditional open maxillary sinus surgery, the closed maxillary sinus ascending surgery can simplify the operation procedure, shorten the operation time and reduce the postoperative reaction. It is a simple and effective technique of sinus lifting.