Spectroscopic image measurements of human teeth by optical computed tomography (CT) using coherent detection imaging method with lasers

摘要

Optical computed tomography of human teeth is demonstrated by the coherent detection imaging method. The optical heterodyne detection technique with three different-wavelength lasers as the sources is used to obtain the optical heterodyne detection technique with three different-wavelength lasers as the sources is used to regions. The different layers of the internal structure of tooth can be clearly reconstructed with high resolu- tion. The image contrast is shown to be wavelength dependent and compared between the same extracted sample with and without saline in the pulp cavity.