摘要目的:探讨存在上颌窦间隔时应用盘钻法经牙槽嵴顶上颌窦底提升术的临床效果。方法:收集2019年1月至2020年1月就诊于青岛大学附属医院口腔种植科，存在上颌窦间隔应用盘钻法经牙槽嵴顶上颌窦底提升术同期种植的病例（24例，女性14例，男性10例），年龄（39.3±11.7）岁（22~56岁）。术后6~8个月行永久修复，根据上颌窦间隔位置分为E类（颧牙槽嵴之前）、M类（颧牙槽嵴之后）和D类（近远中走向）。术前、术后即刻、6个月、1年、2年拍摄锥形束CT。测量术前上颌窦底剩余骨高度（residual bone height，RBH），术后即刻、6个月、1年、2年测量上颌窦底垂直骨高度（vertical bone height，VBH）。统计黏膜穿孔率、种植体存留率。结果:24例患者均成功完成手术，共植入种植体24枚，患者均无头痛头晕等不适，黏膜穿孔率为0（0/24），种植体的愈合期内存留率为100%（24/24）。术前RBH为（5.26±1.90）mm；术后即刻、6个月、1年、2年的VBH分别为（11.82±1.09）、（10.98±0.52）、（10.66±0.44）和（10.40±0.33）mm，不同观测点的VBH差异有统计学意义（ F=187.70， P<0.001）。但术后2年与术后1年的VBH比较，差异无统计学意义（ P=0.071）。1例患者在术后18个月出现种植体周炎。 结论:在种植位点RBH>2 mm且存在上颌窦间隔时，使用盘钻经牙槽嵴顶上颌窦底提升术同期种植的患者均未发生黏膜穿孔，成功率高，可获得足够骨高度并完成同期种植，术后2年与术后1年比较未发生明显的骨吸收改建，骨结合形成良好，操作安全可控。

abstractsObjective:To investigate the clinical effect of disk-up sinus reamer (DSR) in maxillary sinus floor elevation with maxillary sinus septum.Methods:Twenty-four patients were included between January 2019 to January 2020 in Department of Oral Implantology, The Affiliated Hospital of Qingdao University. There were 10 males and 14 females with the age of (39.3± 11.7) years (range 22-56 years). Pre-operative(T0) cone-beam CT (CBCT) was taken for measurement and analysis. All patients were divided into group E (easy situations, septum located anterior to the zygo-matic process), group M (moderate situations, septum located posterior to the zygomatic process) and group D (difficult situations, sagittally oriented septum). The maxillary sinus floor was grafted through the crestal approach by DSR and implants were placed simultaneously. Permanent repair was performed 6-8 months after operation. All patients underwent CBCT before surgery, after surgery immediately (T1), 6 months after surgery(T2), 1 year after surgery(T3), 2 year after surgery(T4). The residual bone height (RBH) and the vertical bone height (VBH) were analyzed. The mucosal perforation rate, implant survival rate were counted.Results:All the 24 patients completed the maxillary sinus lift surgery successfully and 24 implants were placed simultaneously. All patients had no headache, dizziness. The mucosal perforation rate was 0 (0/24). The survival rate of implants during the healing period was 100% (24/24). The RBH was (5.26±1.90) mm pre-operation, the VBH T1, VBH T2, VBH T3 and VBH T4 were (11.82±1.09), (10.98±0.52), (10.66±0.44) and (10.40±0.33) mm, respectively. The differences between the groups by pairing test were statistically significant ( F=187.70, P<0.001), expect VBH T3 and VBH T4 ( P=0.071). Bone resorption and remodeling mainly occurred 1 year after surgery. One patient developed peri-implantitis 18 months after surgery. Conclusions:With the RBH of implant site>2 mm and existence of maxillary sinus septum, using DSR for sinus floor elevation has a high success rate. It can obtain enough bone height and complete the simultaneous implantation to form a good osseointegration. The DSR is simple, safe and controllable, and can shorten the operation time.