Open AccessArticle by Sho Komatsu 1, Shotaro Oshikiri 1, Takatoshi Nagano 1, Akihiro Yashima 1, Yuji Matsushima 1, Satoshi Shirakawa 2, Katsutoshi Komatsu 3, Akiko Mokubo 4 and Kazuhiro Gomi 1,* 1 Department of Periodontology, Tsurumi University School of Dental Medicine, 2-1-3 Tsurumi, Tsurumi ku, Yokohama 230-8501, Japan 2 Department of Dental Hygiene, Tsurumi Junior College, 2-1-3 Tsurumi, Tsurumi ku, Yokohama 230-8501, Japan 3 Komatsu Clinic, 1989-66 Denbo, Fuji 417-0061, Japan 4 Mokubo...