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临床上,在按常规下齿槽神经阻滞方法作下齿槽神经麻醉时,常遇到麻醉不全的病例。其可能的解释是麻醉剂或麻醉技术上的原因,解剖变异或精神因素所致。近年来,学者们对解剖学上的变异已予以重视。认为可能是舌神经的分叉或上齿槽后神经、耳颞神经或下齿槽舌侧的异常分布。Schjetman氏于1967年报道下齿槽神经的变异磨牙分支可分布到下颌第三磨牙。学者们建议,对有神经分布变异者可采用各种辅助措施,如颏或舌下注射、改变阻滞技术及牙周韧带注射等。
Clinically, under the routine alveolar nerve block method for alveolar nerve anesthesia, often encountered cases of incomplete anesthesia. Its possible explanation is the technical, anesthetic or anesthetic causes, anatomical variations or mental factors. In recent years, scholars have attached importance to anatomical variation. It is thought that this may be an abnormal distribution of the lingual nerve bifurcation or superior alveolar nerve, auricular temporal nerve, or lingual inferior lingual groove. Schjetman's 1967 report of a variant of the alveolar nerve The molars branch can be distributed to the mandibular third molars. Scholars suggest that a variety of ancillary measures such as chin or sublingual injection, alteration of blockage techniques, and periodontal ligament injection may be used for those with variations in nerve distribution.