Abstract:

Objective    To evaluate membrane change in osteotome sinus floor elevation in conjunction with dental implant placement. Methods    One hundred and twenty seven implants were placed in 100 consecutive patients with an insufficient residual vertical height. All implants were placed following a one-stage osteotome sinus floor elevation（OSFE）protocol （elevating the sinus floor and placing the implant at the same time）. CBCT was performed prior to，one-day after surgery and six months after surgery. The influence of osteotome technique in conjunction with implant placement on sinus membrane was evaluated. Results    The schneiderian membrane exhibited significant swelling one day after surgery （P < 0.05）. The corresponding changes were also observed for ostium patency with a tendency of transient obstruction（0.09%）after surgery. Compared with pre-surgery CBCT scans，no difference was found in diameter of antral pseudocysts in different periods（P > 0.05）. Conclusion    Thickened membranes and antral pseudocysts might not be contraindications to OSFE from the standpoint of the surgical impact on the schneiderian membrane.

Key words: osteotome sinus floor elevation, sinus schneiderian membrane, antral pseudocysts

摘要：

目的    观察冲压法上颌窦底提升同期牙种植体植入术对上颌窦黏膜的影响。方法    收集2012年1月至2015年8月于第四军医大学口腔医院口腔种植科就诊，因上颌后牙区垂直骨高度不足连续行冲压法上颌窦底提升术的患者100例（共100侧上颌窦），同期植入Straumann种植体126枚。于术前、术后1 d、术后6个月拍摄锥形束CT（CBCT），分析该术式对上颌窦黏膜的影响。结果    上颌窦正常黏膜和增厚黏膜在术后1 d 的CBCT上均观察到黏膜厚度的增加，与术前黏膜厚度的差异有统计学意义（P < 0.05）；术后1 d上颌窦鼻道开口阻塞发生率显著增加（0.09%），与术前差异有统计学意义（P < 0.05）。不同时期上颌窦假性囊肿直径无明显变化（P > 0.05）。结论           从对上颌窦黏膜及生理功能的影响来看，上颌窦黏膜增厚和假性囊肿并非冲压法上颌窦提升术的绝对禁忌证。

关键词: 冲压法上颌窦底提升术, 上颌窦黏膜, 上颌窦假性囊肿