目的:Schneiderian膜穿孔是鼻窦增大术中的主要并发症之一。原因可能与手术技术有关,隔膜,山脊高度不足,和膜厚度。然而,使用锥形束计算机断层扫描(CBCT)量化窦膜厚度的报道有限.这项回顾性研究的目的是:研究经胰窦抬起过程中膜厚度与穿孔率之间的相关性,并根据CBCT数据提出窦膜厚度分类系统。
方法:因此选择了一百零二名受试者,他们在2010年至2013年之间接受了上颌骨后牙种植修复,共进行了185次经颌窦提升手术。所选择的每位患者都必须在初次检查和手术后立即进行CBCT检查。膜厚度,穿孔率,残余骨高度,记录和升高的骨高度进行统计学分析。
结果:施耐德膜的平均厚度为1.78±1.99mm。膜厚与穿孔率呈显著相关(P<0.05),膜厚(≥3mm)和膜薄(≤0.5mm)的穿孔率较高。在厚度组中,B级(≥1和<2mm之间)的穿孔率最低。穿孔和膜形态之间没有显着差异。发现残余骨高度与膜厚度之间呈负相关。趋势表明,在较厚和较薄的残余骨高度,穿孔率越高。
结论:膜厚度与穿孔率之间存在显著相关性。当厚度为1.5-2mm时,穿孔率最低。
OBJECTIVE: Schneiderian membrane perforation is one of the main complications during sinus augmentation. The reasons may be associated with surgical technique, septum, inadequate ridge height, and membrane thickness. However, reports that used cone-beam computed tomography (CBCT) to quantify the thickness of sinus membrane were limited. The aims of this retrospective study were: to study the correlation between membrane thickness and perforation rate during transcrestal sinus lift and to propose a classification system of sinus membrane thickness based upon CBCT data.
METHODS: One hundred and twenty-two subjects who received dental implant restorations over posterior maxilla with a total of 185 transcrestal sinus lift procedures between years 2010 to 2013 were selected consequently. Each patient selected had to have taken CBCT in the initial examination and immediately after surgery. The membrane thickness, perforation rate, residual bone height, and elevated bone height were recorded and processed for statistical analysis.
RESULTS: The mean thickness of the Schneiderian membrane was 1.78 ± 1.99 mm. There was a significant correlation between membrane thickness and perforation rate (P < 0.05), and the perforation rate was higher in thicker (≥3 mm) and thinner membrane (≤0.5 mm). Among the thickness group, Class B (between ≥1 and <2 mm) had the lowest perforation rate. No significant difference was between the perforation and the membrane morphology. A negative relationship between residual bone height and membrane thickness was found. Trend showed that in the thicker and the thinner residual bone height, the higher the perforation rate would be.
CONCLUSIONS: There was a significant correlation between membrane thickness and perforation rate. The perforation rate was lowest when the thickness was 1.5-2 mm.