早在50年代,日本和我国学者就将阻抗测量技术初步应用于测定牙齿根管长度。近年来国外还将这项技术用在诊断龋病、牙周病、牙龈病以及测定牙隐裂和充填物密合度等方面。在诊断龋病方面,国内除了“测定龋洞阻抗辅助诊断牙髓炎”的报告外,迄今尚无其它报道。1984年以来,我们用自行 As early as the 1950s, Japanese and Chinese scholars initially applied impedance measurement techniques to the determination of root canal length. In recent years, this technology is also used abroad in the diagnosis of dental caries, periodontal disease, gum disease and the determination of occult crack and filling adhesion and so on. In the diagnosis of dental caries, the domestic addition to the “determination of cavitary impedance of the auxiliary diagnosis of pulpitis” report, so far no other reports. Since 1984, we use our own