A dental x-ray film with a central projection on which the teeth can close,holding it in position for the radiographic examination of several upper and lower teeth simultaneously.

 
  • 咬翼片一种牙齿X光片,牙齿可以合在其中心投影处,固定在射线照片可以同时检查几颗上牙和下牙的位置。
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