成人翼腭管CBCT测量研究

Examination the Pterygopalatine Canal of Adult with CBCT

目的:研究成人翼腭管的解剖形态,为经翼腭管行上颌神经阻滞麻醉提供指导。方法:利用锥体束CT(CBCT)观测200个正常国人翼腭管的解剖形态。结果:矢状面上翼腭管的走行有四类:1)斜线形,向前下方走行,此类型最为多见,所占比例为89.25%;2)突向前方的弧形,此类型所占比例为5.25%,占第二位;3)折线形,占3.25%。4)突向后方的弧形,此类型最为少见,占2.25%。翼腭管的形态有3类:1)上窄下宽的喇叭口状,此形态最为多见,占88%;2)上下径较一致管状,此形态较为少见,比例占10%;3)不规则形,约占2%。翼腭管的长度平均为(15.76±2.32)mm,翼腭管与颌平面的夹角平均为(55.77±3.37)°。结论:通过CBCT可明确观测翼腭管的形态,对临床有定位指导作用。

Objective： To provide guidance for maxillary nerve block anesthesia through pterygopalatine canal.Methods： We examined the anatomy of the pterygopalatine canal using data obtained from CBCT scans of 200 normal Chinese.Results： In the sagittal plane,four pathways were observed： 1） Diagonal form,the pterygopalatine canal travels in an anterior-inferior direction,the most common pathway,it occurred in 89.25%;2） Arc,Convex to the front,this pathway occurred in 5.25%;3）Fold line shape,this pathway occurred in 3.25%;4）Arc,Convex to the behind,this pathway occurred in 2.25%.There are three shapes of the pterygopalatine canal： 1） bellbottom shape,the most common shapes,the top diameter are less than the below,（88%）;2） tubular,the top diameter are same to the below,（10%）;3）irregular shape,（2%）.The average length of the pterygopalatine canal was（15.76±2.32）mm.The mean angle between the pterygopalatine and the occlusion plane were（55.77±3.37）°.Conclusion： Using CBCT,we are able to observe the exact shape of the pterygopalatine canal.It will play an important role to guide the clinical operation in the future.