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上颌前牙区埋伏多生牙在口腔临床上较为常见。要拔除这些埋伏多生牙，术前需进行Ｘ线摄片定位，了解埋伏的位置、确定手术切口部位与摘除方向。国内目前均采用偏心投照来进行定位，但实际应用时受Ｘ线角度改变和牙片放置时产生的弯曲度，Ｘ线影像会出现变形，不易作出正确的判断。我科自１９８５年以来，采用上前牙轴向咬片对１４６例上颌前牙区埋伏多生牙患者进行摄片定位，与临床手术结果相符率达１００％。上颌前牙轴向咬片对埋伏多生牙定位影像直观，定位诊断准确，是一种可靠的定位方法。
Anterior teeth of the maxillary anterior lying ambush in oral clinical more common. To remove these ambush more raw teeth, preoperative radiographic positioning needs to understand the location of the ambush to determine the surgical incision site and removal of the direction. At present, eccentric projection is used for positioning in the country. However, when the angle is changed by X-ray and the bending degree when the tooth is placed in the practical application, the X-ray image may be distorted and it is difficult to make correct judgment. Our department since 1985, the use of axial bite on the anterior teeth of 146 cases of maxillary anterior area ambush litter localization of patients with radiographic positioning, and the results of clinical surgery consistent rate of 100%. Axial bite of the anterior teeth of the maxillary anterior vision of ambush localization images, positioning diagnosis is accurate, is a reliable method of positioning.