侧壁开窗上颌窦底提升术后垂直向骨增量的观察研究

目的通过观察侧壁开窗上颌窦底提升术后垂直向骨增量的变化情况,研究其相关的影响因素。方法收集上颌后牙区牙列缺损行侧壁开窗上颌窦底提升术分期种植患者资料,对纳入病例的术前剩余牙槽骨高度(residual bone height,RBH)、术后当日垂直向骨高度、术后6个月垂直向骨高度及垂直向骨增量的变化情况进行观察。结果术后6个月较术后当日垂直向骨高度有显著性降低,降低量为0.56±0.25mm;上颌窦底黏膜厚度的术后6个月较术后当日垂直向骨增量的变化量无明显差异;在不同剩余牙槽骨高度情况下,术后6个月较术后当日垂直向骨增量的变化量有统计学差异,RBH大于5mm的患者相对RBH小于5mm的患者垂直向骨增量的降低值显著增加;上颌窦宽度与术后6个月较术后当日垂直向骨增量的降低值呈正相关。结论侧壁开窗上颌窦底提升术后6个月较术后当日存在垂直向骨增量的降低现象;剩余牙槽骨高度大于5mm时垂直向骨增量的降低值显著增加;上颌窦宽度与垂直向骨增量的降低值呈正相关。

Evaluation on the vertical bone augmentation after lateral window sinus floor elevation

Objective To observe the vertical bone augmentation after staged approach lateral window sinus floor elevation, analysis the related influencing factors that may cause the change of vertical bone height. Methods Patients who received staged approach lateral window sinus floor elevation were enrolled in this study. The residual bone height before the surgery, the vertical bone height after the surgery and after the surgery 6 months, and the change of vertical bone augmentation were measured. Results The bone height has decreased significantly between after the surgery and after the surgery 6 months. The reduction of bone height was 0.56 ±0.25 mm. The patients’ initial membrane thickness of the maxillary sinus not influence the vertical bone augmentation. The change of vertical bone augmentation between after the surgery and after the surgery 6 months is related with the residual bone height significantly. The decreasing of vertical bone augmentation in patients with RBH greater than 5 mm was significantly higher than that of patients with RBH less than 5 mm. The decreasing of vertical bone augmentation between after the surgery and after the surgery 6 months was positively correlated with the sinus width. Conclusion The bone height has decreased significantly at 6 months after lateral window sinus floor elevation surgery compared with the day after surgery;RBH and maxillary sinus width were the influencing factors of the change of vertical bone augmentation.