Establishment of a digital process in the manufacture of dental prostheses

2018 Fiscal Year Final Research Report

• Project/Area Number: 16K11610
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Prosthodontics/ Dental materials science and
• Research Institution: Health Sciences University of Hokkaido
• Principal Investigator: Hikita Kazuhiro 北海道医療大学, 歯学部, 教授 (20238281)
• Co-Investigator(Kenkyū-buntansha): 根津 尚史 北海道医療大学, 歯学部, 准教授 (40264056) ; 齊藤 正人 北海道医療大学, 歯学部, 教授 (50337036)
• Project Period (FY): 2016-04-01 – 2019-03-31
• Keywords: デジタルデンティストリー / CAD/CAM

Outline of Final Research Achievements

From the crown morphology data, abutment tooth data was created using CAD. In addition, crown cutting was carried out from abutment tooth data and crown data, and it was confirmed that a series of digital workflow is possible. However, it was confirmed that the work of generating the abutment tooth data using CAD had to be performed manually using a three-dimensional stylus, and that a special CAD software was required. Recently, more and more high-performance intraoral scanners have been developed, and it has been demonstrated that the use of intraoral scanners facilitates the input of crown morphology data from within the oral cavity and allows for the design of an appropriate abutment tooth formation.

Free Research Field

歯科補綴学

Academic Significance and Societal Importance of the Research Achievements

デジタルデンティストリーの発展により、CAD/CAM冠の保険導入やジルコニアなどのCAD/CAM材料の普及がすすんでいる。この技術を活かすためには、材料に応じた適切な支台歯形成が最も重要であることが指摘されている。最終的なクラウン形態から、支台歯形態を導く考え方は、今後歯科医師の技術向上と安定した術後の安定したパフォーマンスに大きく貢献すると考えられる。