Simultaneous Measurement of Multiple Scattering Coefficient and Scattering Anisotropy Factor in Dental Demineralization

Abstract

We developed an intraoral swept source optical coherence tomography (SSOCT) and combined a simultaneous measurement of optical quantitative parameters (i.e., multiple scattering coefficient, m , and scattering anisotropy factor, g eff ) for nondestructive assessment of dental hard tissues. Two-dimensional (2D) circumferential images were constructed by rotating the mini-probe (1.8 mm in diameter) while acquiring image lines, and the adjacent lines in each rotation could be stacked to generate a three-dimensional (3D) volume. In OCT images, areas of demineralization show statistically significant differences (p < 0 01) in optical parameters compared with the parameters from sound enamel.