University Clinic for Cranio- and Maxillofacial Surgery, Medical University of Vienna, Austria.
Department of Conservative Dentistry and Periodontology, School of Dentistry, Medical University of Vienna, Sensengasse 2a, 1090 Vienna, Austria.
Sci Rep. 2017 Mar 24;7:45397. doi: 10.1038/srep45397.
The aim of this study was to analyse the posterior maxillary sinus based on its extension into the alveolar process and to provide a simple clinical classification. A retrospective cohort study was conducted in CT scans of 200 dentate and 200 edentulous patients (100 women and 100 men, respectively). After manual placement of 12 reference points morphometric analysis was performed and sinus depth, residual alveolar ridge height (RH) and the sinus opening angle were calculated. Sinuses were classified according to the quartiles of sinus depth: class I (above the hard palate), class II (0-6 mm below the hard palate) and class III (>6 mm below the hard palate). Sinus depth was found to be a reliable anatomical landmark and did not vary significantly between gender (p = 0.8940) or dentition groups (p = 0.9723). Alveolar height varied significantly between sinus classes (p < 2 × 10) and dentition groups (p < 2 × 10) but not between genders (p = 0.5178). The sinus opening angle was significantly different between sinus classes (p < 2.2 × 10) but not between gender or dentition groups. We propose a novel classification built upon the quartiles of sinus depth, dividing the sinuses into three classes. Our classification is the first one that represents the anatomy of the patient independent of gender and dentition.
本研究旨在分析上颌窦后份向牙槽突的延伸，并提供一种简单的临床分类方法。对 200 例有牙和 200 例无牙患者（分别为 100 名女性和 100 名男性）的 CT 扫描进行了回顾性队列研究。手动放置 12 个参考点后进行形态分析，计算窦腔深度、剩余牙槽嵴高度（RH）和窦口角度。根据窦腔深度的四分位将窦腔分为三类：I 类（硬腭上方）、II 类（硬腭下方 0-6mm）和 III 类（硬腭下方 6mm 以上）。窦腔深度是一个可靠的解剖标志，在性别（p=0.8940）或牙列组（p=0.9723）之间没有显著差异。牙槽嵴高度在窦腔分类（p<2×10）和牙列组（p<2×10）之间存在显著差异，但在性别之间无显著差异（p=0.5178）。窦口角度在窦腔分类之间存在显著差异（p<2.2×10），但在性别或牙列组之间无显著差异。我们提出了一种基于窦腔深度四分位的新分类，将窦腔分为三类。我们的分类是第一个独立于性别和牙列的患者解剖学分类。
