A-21 ジルコニア切削用ダイヤモンドポイントにおける切削効率の検討(CAD/CAM・切削・研磨,一般講演(口頭発表))

概要

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The purpose of this study was to evaluate cutting performance of rotary instruments with diamond burs in zirconia. Zirconia disc was cut using one of two diamond burs; Mary Dia (MD) and GC (GC), attached with one of two rotary cutting instruments; air-turbine handpiece (AT) and micromoter handpiece (MM). The specimens were cut vertically and the cutting force was measured. In the AT groups, the cutting force in GC was higher than that in MD. However, there was no difference in cutting force between AT and MM. It was suggested that bur selection should influence on cutting performance of zirconia.
2010-03-25