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要使上颌第二、三磨牙根部图像清晰,无颧弓重叠,并对一些有张口受限,功能障碍的病人或腭咽部比较敏感的病人,完成摄片操作,有时会遇到困难。通过文献复习,找到一种比较简便的方法,可以解决这一困难,并基本上符合上述要求。技术要点说明患者头部位置应与正中平面垂直与耳屏鼻翼连线平行,同时与地面平行。胶片的长轴:通常使用的牙片,放置于前后位和水平位(即与咬牙合平面方向一致),注意胶片包的颊部中心部位应置于上颌第二磨牙的远中面(如图一)同时轻咬胶片袋不动。
To make the second and third molars the root of the image clear, no zygomatic arch overlap, and for some limited mouth, dysfunction or palatal pharyngeal patients more sensitive to complete the operation of the film, and sometimes encounter difficulties. Through the literature review, find a more convenient way to solve this problem, and basically meet the above requirements. Technical points that the patient's head position should be perpendicular to the median plane and the tragus parallel to the nose, while parallel with the ground. The long axis of the film: The commonly used teeth, placed in the anterior and posterior position and the horizontal position (that is consistent with the direction of the occlusal plane), pay attention to the center of the film package cheek should be placed in the distal surface of the maxillary second molar A) At the same time flicking the film bag does not move.