Objective. To explore and analyze the application effect of external and internal elevation of the maxillary sinus in implant restoration of the posterior maxilla. Methods. A total of 84 patients undergoing implant restoration of the posterior maxilla in the hospital were enrolled between January 2019 and March 2021. According to the random number table method, they were divided into the observation group (n = 42) and the control group (n = 42). The control group underwent external elevation of the maxillary sinus, while the observation group underwent internal elevation of the maxillary sinus. At 6 h, 12 h, and 24 h after surgery, the pain degree between the two groups was compared. All were followed up at 6 months after surgery. The osseointegration (bone resorption around implants, elevation height of maxillary sinus floor, average healing time) and soft tissues (bleeding index, plaque index, probing depth) in both groups were observed. The occurrence of postoperative complications was recorded. Results. At 6 h, 12 h, and 24 h after surgery, VAS scores in the observation group were significantly lower than those in the control group (). At 6 months after surgery, bone resorption and elevation height of the maxillary sinus floor in the observation group were significantly higher than those i.0.0n the control group, and the average healing time was significantly shorter than that in the control group (). The bleeding index, plaque index, and probing depth in the observation group were significantly lower than those in the control group (). There was no significant difference in the incidence of postoperative complications between the observation group and the control group (9.52% vs. 19.05%) (). Conclusion. The application effect of internal elevation of the maxillary sinus is good in implant restoration of the posterior maxilla, which can relieve pain and swelling and improve implant effect.

中文翻译：

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上颌窦内外抬高术在上颌后牙种植修复中的应用效果

客观的。探讨分析上颌窦外抬高和内抬高在上颌后牙种植修复中的应用效果。方法。方法选取2019年1月至2021年3月期间在本院接受上颌后牙种植修复的患者84例,按照随机数字表法分为观察组（n=42）和对照组（n= 42  ）。  = 42）。对照组采用上颌窦外抬高术,观察组采用上颌窦内抬高术。术后6、12、24小时比较两组患者的疼痛程度。所有患者均于术后 6 个月进行随访。观察两组骨整合（种植体周围骨吸收、上颌窦底抬高高度、平均愈合时间）和软组织（出血指数、菌斑指数、探诊深度）。记录术后并发症的发生情况。结果。术后6、12、24小时观察组VAS评分显着低于对照组（）。术后6个月观察组骨吸收及上颌窦底抬高高度均显着高于对照组i.0.0，且平均愈合时间显着短于对照组（）。观察组出血指数、斑块指数、探诊深度均显着低于对照组（）。观察组与对照组术后并发症发生率无显着差异（9.52% vs. 19.05%）（）。 结论。上颌窦内抬高术在上颌后牙种植修复中的应用效果良好，可减轻疼痛、肿胀，提高种植效果。