【摘要】 目的:探讨国人上颌窦底提升术前解剖形态学特点。方法:纳入行上颌窦底提升术的患者589人666个上颌窦。应用CBCT观测缺牙后上颌窦解剖形态及变异。结果:在666个上颌窦中,上颌窦分隔的发生率为30. 48%。上颌窦黏膜厚度≤2 mm占60. 36%。上颌窦外侧壁的厚度平均为(1. 38±0. 05) mm。上牙槽后动脉的检出率为66. 52%。上颌窦底骨质缺如的发生率为4. 35%。上颌窦宽度平均为(14. 20±0. 19) mm。上颌窦囊肿的检出率为11. 41%。结论:CBCT检查能够比较全面客观的反映上颌窦解剖形态的差异,为评估手术风险及术中操作提供参考依据。更多还原

【Abstract】 Objective: To observe the anatomic variations and lesions of maxillary sinus by CBCT before sinus augmentation in Chinese patients with edentulous posterior maxilla. Methods: 589 participants with 666 sinuses were enrolled in this study. The anatomic variations and lesions of maxillary sinus were examined by CBCT prior to sinus augmentation surgery. Results: In all 666 sinuses,the prevalence of septa was 30. 48%,membrane thickness ≤2 mm was 60. 36%,the average thickness of the lateral wall was( 1. 38 ± 0. 05) mm,the prevalence of posterior superior alveolar artery in the sinus was 66. 52%,the average diameter of the artery was( 0. 98 ± 0. 03) mm,the discontinuity of the sinus floor was 4. 35%,the mean width of maxillary sinus was( 14. 20 ± 0. 19)mm,and the prevalence of cyst was 11. 41%. Conclusion: CBCT can reveal the sinus diversity and provide the information for the safe and effective sinus augmentation.更多还原