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Masahiro TANAKA
The 2nd. Department of Prosthetic Dentistry, Osaka Dental University
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Tohru TOKUNAGA
The 2nd. Department of Prosthetic Dentistry, Osaka Dental University
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Yoshimasa SAKO
The 2nd. Department of Prosthetic Dentistry, Osaka Dental University
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Takayoshi KAWAZOE
The 2nd. Department of Prosthetic Dentistry, Osaka Dental University
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Tsugutake SADOYAMA
Industrial Products Research Institute
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Tadashi MASUDA
Industrial Products Research Institute