1. Department of Periodontology; Graduate School of Medical and Dental Sciences; Tokyo Medical and Dental University (TMDU); Tokyo Japan
2. Photonics Control Technology Team; Advanced Photonics Technology Development Group; RIKEN Center for Advanced Photonics, Riken, Wako; Saitama Japan
3. Research Center for Medical and Dental Sciences; Tokyo Medical and Dental University (TMDU); Tokyo Japan