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Masahiro Hayasaka
Tohoku Dental University, Department of Removable Prosthodontics
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Kenji Takahashi
Tohoku Dental University, Department of Removable Prosthodontics
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Yasuo Kataoka
Tohoku Dental University, Department of Removable Prosthodontics
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Tokuji Tajima
Tohoku Dental University, Department of Removable Prosthodontics