Figure 1.

Prototype Yoshida Dental optical coherence tomography (OCT) system. (A) Specimen positioning to image the occlusal surface with the intraoral mirror tip for posterior teeth imaging attached to the handheld probe; (B) schematic diagram OCT system. An interference pattern is produced by splitting the beam of the Micro Electro Mechanical System (MEMS)-based laser source into two arms (i.e., reference arm and sample arm). The backscattered light from the sample is redirected back and recombined with the light from the reference arm in the coupler. The interference signal is transformed into raw A-scan data. Series of A-scans produce raw B-scan (2D) and the composition of 2D leads to the acquisition of 3D images; (C) overview of the OCT system with foot pedal for clinical imaging.