口外翼下颌阻滞麻醉的应用解剖学研究

Applied Anatomical Study of the Extraoral Pterygomandibular Block Anesthesia

在40侧头预部正中矢状切开标本和60侧下颌骨标本上,按口外翼下颌阻滞麻醉的设计要求,解剖观察了下牙槽神经、舌神经在翼下颌间隙的位置。测量了从下颌管下缘点和下颌角行口外翼下颌阻滞麻醉时的进针深度和角度。测得从下颌骨下缘点的进针深度为37mm;下颌角点的深度为30mm,穿刺针与下颌支后缘之间的角度为31°。对采用该法行口外阻滞麻醉的解剖学要点,优缺点进行了讨论。

In this study 40 sides head—neck specimens incised through the median sagittal plane and 60 sides specimens of mandible were used.According to the designing requirements for performing the extrao ral pterygomandibular space block anesthesia,the location of the inferior alveolar nerve and that of the lingual nerve in the pterygomandibular spaces were investigated.The depth and angle,between the mandibular lower border and the mandibular angle,used for puncture were measured.The anatomical main points,advantage and shortcoming for performing this type of anesthesia were also discussed in this article.