拍“牙片”会不会受到辐射？牙医：相当于吃了20根香蕉…… Teeth are like icebergs, with 60 percent of their structure hidden beneath the gums. Dentists need images of the whole structures 香蕉 辐射 牙医 辐射剂量 牙片 2025-09-20 13:28 2