Shinagawa Adriana, Chin Veronica K L, Rabbani Said R, Campos Antonio C
Department of Oral and Maxillofacial Surgery, Faculty of Dentistry, University of São Paulo, São Paulo, Brazil.
J Oral Maxillofac Surg. 2009 Dec;67(12):2609-16. doi: 10.1016/j.joms.2009.07.042.
The Gow-Gates technique is said to have several advantages over traditional techniques to achieve mandibular nerve anesthesia; however, its routine use is quite limited, mainly due to complications during visual alignment of reference landmarks. The purpose of this study was to verify the validity and accuracy of a new method to reach the injection site.
Fifteen magnetic resonance images were captured. Distances from the ideal injection point in the condylar neck (puncture ideal) to the injection points located in the alpha and beta plane intersection (puncture Gow-Gates and puncture modified) were measured and compared.
Positive and significant (P <or= .003) Pearson correlations between landmarks and injection points confirmed the validity of the modified technique. Paired t test showed that the segment line puncture ideal-puncture modified, 5.17 mm, was 3 times shorter (P < .001) than the segment line puncture ideal-puncture Gow-Gates, 17.91 mm. As calculated by linear regression, establishing the injection point of the modified technique depended only on the anteroposterior and lateromedial condyle positions.
The modified technique proved to be valid and precise and has a determined and an effective injection site.
据说Gow-Gates技术在实现下颌神经麻醉方面比传统技术有几个优点；然而，其常规应用相当有限，主要是由于在参考标志的视觉对齐过程中出现并发症。本研究的目的是验证一种到达注射部位的新方法的有效性和准确性。
采集15张磁共振图像。测量并比较从髁突颈部理想注射点（穿刺理想点）到位于α平面和β平面交点处的注射点（Gow-Gates穿刺点和改良穿刺点）的距离。
标志点与注射点之间呈显著正相关（P≤0.003），证实了改良技术的有效性。配对t检验显示，穿刺理想点-改良穿刺点的线段长度为5.17mm，比穿刺理想点-Gow-Gates穿刺点的线段长度17.91mm短3倍（P<0.001）。通过线性回归计算，确定改良技术的注射点仅取决于髁突的前后和内外位置。
改良技术被证明是有效和精确的，并且有一个确定且有效的注射部位。
