精密加工された歯科用セラミックスに対する破壊強度の評価

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タイトル別名
  • Fracture strength for precision processed dental ceramics

抄録

<p>Dental ceramics are affected by milling process of CAM machine, and these surfaces are caused micro-cracks. This problem leads to cause severe fracture and reduce the fatigue life. The aim of this study is to eliminate the micro-crack of dental ceramics surface by using micro slurry-jet (MSJ) process. MSJ is a blasting technique that uses fine particles as the abrasive media, along with compressed air and pure water. In this study, CERASMART 270 that is composite resin ceramics was used as a specimen. The surface of specimens was adjusted MSJ process after polishing with #1500 sandpaper and dental abrasive. The MSJ processed and polished surfaces were observed using a laser microscopy to examined residual defects and micro-cracks. As a result, it was found that residual defects and micro-cracks on the surface after polishing could be able to expose and eliminate. This study showed that MSJ process is an effective technique for eliminating residual defects and micro-cracks on the surface of dental ceramics.</p>

収録刊行物

  • 年次大会

    年次大会 2018 (0), J0220203-, 2018

    一般社団法人 日本機械学会

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