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*Mayuko Awata
Graduate Sch. Dentistry(Dept. Orthodontics),Osaka Dental Univ.
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Masahiro Okada
Graduate Sch. Medicine, Dentistry and Pharmaceutical Sciences(Dept. Biomaterials),Okayama Univ.
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Takayuki Nambu
Dept. Bacteriology, Osaka Dental Univ.
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Naoyuki Matsumoto
Dept. Orthodontics, Osaka Dental Univ.