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*Tomoko Tokuda
Graduate Sch. Dentistry(Dept. Orthodontics), Osaka Dental Univ.
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Yoshitomo Honda
Institute of Dental Research, Osaka Dental Univ.
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Yoshiya Hashimoto
Dept. Biomaterials, Osaka Dental Univ.
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Naoyuki Matsumoto
Dept. Orthodontics, Osaka Dental Univ.