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*Hiroshi Ishihata
Div. Perio. and Endo. Tohoku Univ. Gradu, Sch. Dent.
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Nagayoshi Iwama
Div. Perio. and Endo. Tohoku Univ. Gradu, Sch. Dent.
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Mitsuru shimonishi
Div. of Comprehensive Dent. Tohoku Univ. Gradu, Sch. Dent.
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Masahumi Kanehira
Div. of Operative Dent. Tohoku Univ. Gradu, Sch. Dent.
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Masashi Komatsu
Div. of Operative Dent. Tohoku Univ. Gradu, Sch. Dent.
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Hidetoshi Shimauchi
Div. Perio. and Endo. Tohoku Univ. Gradu, Sch. Dent.