Accuracy of the Ceramic Crown Fabricated by the Newly Developed CAD/CAM System

DOI 10 Citations 10 References
  • HOTTA Yasuhiro
    Department of Oral Biomaterials and Technology, Showa University School of Dentistry
  • MIYAZAKI Takashi
    Department of Oral Biomaterials and Technology, Showa University School of Dentistry
  • LEE Won Sik
    Department of Oral Biomaterials and Technology, Showa University School of Dentistry
  • KOBAYASHI Yukitaka
    Department of Oral Biomaterials and Technology, Showa University School of Dentistry

Bibliographic Information

Other Title
  • 試作CAD/CAM装置で製作したセラミック製クラウンの適合精度

Search this article

Abstract

A new method for fabricating ceramic crowns using a CAD/CAM process with the originally developed dental CAD/CAM machine was developed. A stone model of the prepared abutment and adjacent teeth was digitized with a non-contact laser digitizer equipped in the machine. Subsequently, a crown fitting the abutment with the approximate contour was designed automatically by computer, and the NC program for CAM was prepared. A crown was fabricated by milling a crystalline glass ceramic block automatically with computer-aide program. The crown was set in the stone mold with zinc phosphate cement. The thickness of the cement layer was measured on the sectioned surface with a project profile meter. The thickness of the cement layer was 10 to 150 μm, and the discrepancy was larger on the occlusal sides than on margin. Because several factors affect the accuracy of the fabricated crown, further developments we needed to improve accuracy.

Journal

Citations (10)*help

See more

References(10)*help

See more

Keywords

Details 詳細情報について

Report a problem

Back to top