Tooth decay detection

特許 係属中 PROBLEM TO BE SOLVED: To provide a tooth decay detection method and device for detecting an early tooth decay with sensitivity, accuracy, and safety. ; SOLUTION: A terahertz spectroscope capable of frequency sweeping or a terahertz analyzer generating only a specific wavelength is applied to a decayed tooth diagnosis to detect a tooth decay mainly from crystallinity evaluation or from crystal defects caused by changes in the composition.