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目的:探讨上颌后牙区种植,骨高度不足病例采用经牙槽嵴顶入径的上颌窦提升技术,不植入骨移植材料,同期进行种植体植入的可行性。方法:采用经牙槽嵴顶入径,以骨凿技术进行闭合式上颌窦提升,在提升后的空间内不植入任何骨移植材料,并同期植入种植体,修复完成后经1、3、6、12、24个月随访,拍摄全颌曲面断层片和根尖片评价种植体颈缘骨水平变化,窦底提升后骨高度变化以及种植体周围骨整合情况。结果:所有病例在观察期内均未发生上颌窦炎症,种植体根尖部与窦底之间可见新骨生成,种植体周围骨整合良好,窦底提升后上颌窦底至牙槽嵴顶的骨量明显增加。结论:经牙槽嵴顶入径,采用骨凿技术进行上颌窦底提升术后,不植入骨移植材料,在6月后的X线片上可观察到窦底骨高度由于新骨的生成而增加,种植体根尖部被新生的骨组织包绕并形成骨结合。
OBJECTIVE: To investigate the maxillary sinus elevation technique with maxillary alveolar approach using maxillary sinus approach in maxillary posterior teeth implantation and bone insufficiency. The feasibility of implants was not implanted during the same period. Methods: With the approach of alveolar crest, osteotome technique for closed maxillary sinus elevation, no bone graft material was implanted in the augmented space and implants were implanted at the same time. All patients were followed up for 6, 12 and 24 months. All the maxillary curved facets and root tips were used to evaluate the changes of the level of cervical margin, the change of the bone height after sinus floor elevation and the osseointegration of the implant. RESULTS: No maxillary sinusitis occurred in all cases during the observation period. New bone was found between the apical portion of the implant and the sinus floor. The osseointegration around the implant was good. The maxillary sinus elevation to the crest of the alveolar ridge Significant increase in bone mass. CONCLUSIONS: After the maxillary sinus floor elevation using the osteotome technique with the maxillary sinus approach, the bone graft is not implanted. The sinus bone height can be observed on the X-ray film after 6 months due to the formation of new bone Increased, the implant tip is surrounded by nascent bone tissue and forms an osseous bond.