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*Keisuke Seki
Nihon University School of Dentistry Dental Hospital General Practice Residency
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Hideto Chikahashi
Department of Complete Denture Prosthodontics, Nihon University School of Dentistry
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Mitsue Kshida
Nihon University School of Dentistry Dental Hospital Dental hygienist Section
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Shigeko Okabe
Nihon University School of Dentistry Dental Hospital Dental hygienist Section
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Shigeyuki Masutani
Nihon University School of Dentistry Dental Hospital General Practice Residency
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Koichi Ito
Department of Periodontology, Nihon University School of Dentistry