Moiseiwitsch J, Irvine T
Department of Endodontics, University of Maryland, Baltimore 21201-1510, USA.
Oral Surg Oral Med Oral Pathol Oral Radiol Endod. 2001 Sep;92(3):325-8. doi: 10.1067/moe.2001.115977.
This study determined the average length of the pterygopalatine fissure by using human cadavers. Recommendations are made to improve the success of maxillary nerve block injections.
Pterygopalatine fissures were dissected, exposing the maxillary nerve trunk in 47 human cadavers. The length of the fissure was measured from the maxillary nerve to the buccal sulcus. The angle between the fissure and the occlusal plane was also recorded.
The average fissure length was 36.7 mm, making an approximately 60 degrees angle to the occlusal plane. Fissures from females were statistically significantly shorter than those from males. There was no difference with respect to ethnic group. Cadaver length was the best predictor of fissure length.
Depth of penetration with a needle that is longer than that normally available is necessary to predictably ensure a successful maxillary nerve block.
本研究通过使用人体尸体来确定翼腭裂的平均长度。并提出了提高上颌神经阻滞注射成功率的建议。
解剖47具人体尸体的翼腭裂，暴露上颌神经干。从翼腭裂到颊沟测量其长度。同时记录翼腭裂与咬合平面之间的夹角。
翼腭裂平均长度为36.7毫米，与咬合平面呈约60度角。女性的翼腭裂在统计学上显著短于男性。不同种族之间无差异。尸体长度是翼腭裂长度的最佳预测指标。
为确保上颌神经阻滞成功，需要使用比通常可用的更长的针进行穿刺。
