背景:进行翼腭窝(PPF)浸润是为了减少内窥镜鼻窦手术和鼻中隔成形术期间的血流量,以及控制后鼻出血,并在牙科手术中提供区域麻醉。考虑到大腭孔(GPF)的形态计量学,进行PPF浸润,腭大管(GPC)和PPF将增加手术的成功率并降低并发症的风险.本研究的目的是调查GPF,GPC,腭小孔(LPF),通过CBCT获得的小腭管(LPC)和PPF形态学,为介入手术提供信息。
方法:GPF,GPC,LPF,通过PlanmecaRomexis程序,在75例女性和75例男性的CBCT图像中对LPC和PPF进行了形态学回顾性评估。在这些图像上测量19个参数。
结果:对这些参数进行统计学评估。按性别对这些参数的比较表明,GPC-PC之间的距离存在显着差异,PC-IOF,LPC-GPF,冠状面和横向面的GPF-MS,GPF与牙齿咬合平面之间的距离,GPF-PNS,GPF-IF和TD-GPF,在GPF领域。发现LPF的数量范围为1至5。
结论:我们的研究结果可能有助于正确插入针头以应用上颌神经阻滞成功率高,并发症少。我们建议将针头插入到中矢面外侧14-15mm处,在牙齿的咬合平面上19-20毫米,并且与第三磨牙在同一直线上。对于通过GPF的PPF渗透,针头应在横向平面上以66°角向前推28毫米,在垂直平面上以14°-15°角向上推28毫米。
BACKGROUND: The pterygopalatine fossa (PPF) infiltration is performed to reduce blood flow during endoscopic sinus surgery and septorhinoplasty, as well as to control posterior epistaxis and provide regional anesthesia in dental procedures. PPF infiltration performed with consideration of the morphometrics of greater palatine foramen (GPF), greater palatine canal (GPC) and PPF would increase the success of the procedure and reduce the risk of complications. The aim of this study is to investigate the GPF, GPC, lesser palatine foramen (LPF), lesser palatine canal (LPC) and PPF morphology via the images obtained by CBCT, to provide information for interventional procedures.
METHODS: GPF, GPC, LPF, LPC and PPF were morphometrically evaluated retrospectively in CBCT images of 75 female and 75 male cases by Planmeca Romexis program. The 19 parameters were measured on these images.
RESULTS: These parameters were evaluated statistically. The comparison of these parameters by genders revealed significant differences in distances between GPC-PC, PC-IOF, LPC-GPF, GPF-MS in the coronal and transverse planes, the distance between GPF and the occlusal plane of the teeth, GPF-PNS, GPF-IF and TD-GPF, and in the area of GPF. The number of LPF was found ranging from 1 to 5.
CONCLUSIONS: Our results may help to insert to needle properly for application of maxillary nerve block with a high success rate and minimal complication. We recommend that the needle should be inserted 14-15 mm lateral to the midsagittal plane, 19-20 mm over the occlusal plane of the teeth and on the same line with the third molar teeth. For PPF infiltration through the GPF, the needle should be pushed forward 28 mm upward at 66° angle on the transverse plane and 14°-15° angle on the vertical plane.