Department of Oral Surgery, Vienna Medical University, Vienna, Austria.
J Periodontol. 2012 May;83(5):551-6. doi: 10.1902/jop.2011.110345. Epub 2011 Nov 7.
Little is known about maxillary sinus compliance, i.e., the intrinsic potential of the sinus membrane to resume its homeostatic status after the surgical trauma caused by sinus floor elevation. The aim of the present study is to investigate the effect of maxillary sinus floor augmentation on sinus membrane thickness.
Within-patient comparison of computed tomographic scans before bone grafting versus 4 to 6 months after bone grafting was performed. Changes in membrane thickness were evaluated in 65 maxillary sinus floor augmentation procedures via a lateral approach in 35 patients without clinical signs of sinus pathology at any time.
Sinus membrane thickness differed significantly before (0.8 ± 1.2 mm) versus after (1.5 ± 1.3 mm) augmentation surgery (P <0.001), with a mean increase of 0.8 ± 1.6 mm (maximum: 4.4 mm). Only 28% of augmented sinuses did not show membrane thickening. In non-augmented control sinuses, there was no evidence of membrane thickness increase.
The results indicate that the maxillary sinus membrane, even in healthy clinical conditions, undergoes morphologic modifications after sinus floor elevation, yet membrane reactions demonstrate significant variability. Future research on the effect of augmentation surgery on maxillary sinus physiology is recommended.
关于上颌窦顺应性（即窦膜在接受鼻窦提升术的外科创伤后恢复其生理状态的固有潜能）知之甚少。本研究旨在探讨上颌窦底提升术对上颌窦膜厚度的影响。
对 35 例患者的 65 例上颌窦底提升术进行了患者内比较，所有患者均采用外侧入路，在任何时候均无窦腔病理的临床迹象。在骨移植前（0.8 ± 1.2 mm）和骨移植后（1.5 ± 1.3 mm）进行计算机断层扫描，评估膜厚度的变化。
提升术后窦膜厚度明显不同（术前：0.8 ± 1.2 mm；术后：1.5 ± 1.3 mm）（P <0.001），平均增加 0.8 ± 1.6 mm（最大：4.4 mm）。仅 28%的提升窦未出现膜增厚。在非提升对照窦中，没有膜厚度增加的证据。
结果表明，上颌窦膜即使在健康的临床条件下，在接受鼻窦底提升术后也会发生形态学改变，但膜反应表现出显著的可变性。建议对提升手术对上颌窦生理学的影响进行进一步的研究。
