Analysis of Internal Defects in All-ceramic Crowns Using Micro-focus X-ray Computed Tomography

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概要

• 論文の詳細を見る

• The purpose of this study was to examine all-ceramic crowns for internal defects using micro-focus X-ray computed tomography (microCT). Mono-ceramic CAD/CAM crowns, ceramic-core CAD/CAM crowns, and heat-pressed ceramic crowns were used as specimens. The microCT images of the specimens were obtained and analyzed using a 3D volume rendering software. Mono-ceramic CAD/CAM crowns contained almost no pores, while ceramic-core CAD/CAM crowns contained pores only in the porcelain veneer area. Heat-pressed ceramic crowns had lots of pores in the cusps and the area around them. Results of this study indicated that internal pores in all-ceramic crowns could be observed non-destructively using microCT, and that CAD/CAM all-ceramic crowns contained fewer pores than crowns fabricated using manual techniques.

• 日本歯科理工学会の論文

著者

• Nakamura Takashi

  Department of Cardiology, Saiseikai Shigaken Hospital

• YATANI Hirofumi

  Department of Fixed Prosthodontics, Okayama University Graduate School of Medicine and Dentistry

• WAKABAYASHI Kazumichi

  Department of Fixed Prosthodontics and Occlusion, Faculty of Dentistry, Osaka University

• Yatani Hirofumi

  Division Of Oral Maxillofacial Regeneration Graduate School Of Dentistry Osaka University

• Yatani Hirofumi

  Department Of Fixed Prosthodontics

• Yatani Hirofumi

  Department Of Oral And Maxillofacial Rehabilitation Okayama University Graduate School Of Medicine A

• Takano Naoki

  Department Of Micro System Technology College Of Science And Engineering Ritsumeikan University

• KINUTA Soichiro

  Department of Fixed Prosthodontics, Osaka University Graduate School of Dentistry

• MUTOBE Yoshihiko

  Department of Fixed Prosthodontics, Osaka University Graduate School of Dentistry

• Kinuta Souichirou

  Division Of Oral Maxillofacial Regeneration Graduate School Of Dentistry Osaka University

• Nakamura T

  Division Of Oral Maxillofacial Regeneration Graduate School Of Dentistry Osaka University

• Wakabayashi K

  Division Of Oral Maxillofacial Regeneration Graduate School Of Dentistry Osaka University

• Kinuta Soichiro

  Department Of Fixed Prosthodontics Osaka University Graduate School Of Dentistry

• KAWAMURA Yoshiko

  Department of Fixed Prosthodontics, Osaka University Graduate School of Dentistry

• Mutobe Yoshihiko

  Department Of Fixed Prosthodontics Osaka University Graduate School Of Dentistry

• Kumazawa Youichi

  Bionic Co. Ltd. Osaka Jpn

• Nakamura Takashi

  Department Of Cardiology Saiseikai Shiga Hospital

• Kawamura Yoshiko

  Department of Chemistry, College of Liberal Arts and Sciences, Kyoto University

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