[1] Nihon Univ, Sch Dent, Dept Periodontol, 2-870-1 Sakaecho Nishi, Matsudo, Chiba 2718587, Japan
[2] Nihon Univ, Sch Dent, Res Inst Oral Sci, Matsudo, Chiba, Japan
[3] Meikai Univ, Sch Dent, Div Periodontol, Dept Oral Biol & Tissue Engn, Sakado, Saitama, Japan
[4] Niigata Univ, Grad Sch Med & Dent Sci, Div Periodontol, Dept Oral Biol Sci, Niigata, Japan
[5] Nihon Univ, Sch Dent, Dept Periodontol, Tokyo, Japan
[6] Tokyo Med & Dent Univ, Dept Periodontol, Grad Sch Med & Dent Sci, Tokyo, Japan
[7] Fukuoka Dent Coll, Sect Periodontol, Dept Odontol, Fukuoka, Japan
[8] Osaka Univ, Grad Sch Dent, Dept Periodontol, Suita, Osaka, Japan
[9] Matsubara Dent Clin, Gifu, Japan
[10] Seikeikai Hosp Internal & Dent Med, Yokohama, Kanagawa, Japan
[11] Keio Univ, Sch Med, Dept Dent & Oral Surg, Tokyo, Japan
[12] Matsumoto Dent Univ, Dept Endodontol, Sch Dent, Shiojiri, Japan
[13] Tokyo Dent Coll, Dept Oral & Maxillofacial Implantol, Tokyo, Japan
[14] Tokyo Dent Coll, Dept Periodontol, Tokyo, Japan
[15] Tohoku Univ, Grad Sch Dent, Div Periodontol & Endodontol, Dept Oral Biol, Sendai, Miyagi, Japan
[16] Fukuoka Dent Coll, Dept Operat Dent & Endodontol, Fukuoka, Japan
[17] Hidaka Dent Clin, Tokyo, Japan
[18] Iwate Med Univ, Div Periodontol, Dept Conservat Dent, Morioka, Iwate, Japan
[19] Asahi Univ, Sch Dent, Dept Periodontol, Div Oral Infect & Dis, Hozumi, Japan
[20] Kagoshima Univ, Grad Sch Med & Dent Sci, Dept Periodontol, Kagoshima, Japan
[21] Meikai Univ, Sch Dent, Dept Restorat & Biomat Sci, Div Oral Rehabil, Sakado, Saitama, Japan
[22] Ishikura Dent Clin, Takasaki, Gunma, Japan
[23] Hamamatsu Act Tower Aoyama Dent Off, Hamamatsu, Shizuoka, Japan
[24] Sanno Hosp, Dent & Oral Surg, Tokyo, Japan
[25] Kanagawa Dent Univ, Dept Periodontal Regenerat, Yokosuka, Kanagawa, Japan
[26] Showa Univ, Sch Dent, Dept Periodontol, Tokyo, Japan
[27] Itoh Dento Maxillofacial Hosp, Kumamoto, Japan
[28] Hlth Sci Univ Hokkaido, Sch Dent, Div Periodontol & Endodontol, Dept Oral Rehabil, Tobetsu, Hokkaido, Japan
[29] Tsurumi Univ, Sch Dent Med, Dept Periodontol, Yokohama, Kanagawa, Japan
[30] Sachi Dent Clin, Tsuchiura, Ibaraki, Japan
[31] Matsumoto Dent Univ, Dept Periodontol, Sch Dent, Shiojiri, Japan
[32] Hasegawa Dent Off, Tokyo, Japan
[33] Yuraku Dent Off, Yokohama, Kanagawa, Japan
[34] Sase Dent Off, Chiba, Japan
[35] Arita Dent Clin, Tokyo, Japan
[36] Kanagawa Dent Univ, Div Implantol & Periodontol, Dept Highly Adv Stomatol, Grad Sch Dent, Yokosuka, Kanagawa, Japan