アブストラクト(21巻2号:神奈川歯学)

神奈川歯学

Japanese

Title : Non-precious合金用ミリングカッターの試作とその基礎的研究
Subtitle : 原著
Authors : 戸田篤志, 松尾悦郎
Authors(kana) :
Organization : 神奈川歯科大学歯科補綴学教室第一講座
Journal : 神奈川歯学
Volume : 21
Number : 2
Page : 149-175
Year/Month : 1986 / 9
Article : 原著
Publisher : 神奈川歯科大学学会
Abstract : 「緒言」ミリングテクニックによって製作する支台装置は, 歯科補綴領域において重要視されている咬合圧の均等配分や残存歯周組織の保全を主目的とし, その上に衛生学的ならびに審美的配慮をしたものである. テレスコープクラウン型支台装置に, ミリング法を導入したのは, Steiger,A.A. が最初とされGaerny,A. Bottger,H. およびKorber,K. らによって, 各々の理論に基づいた形態が提唱され, 今日では, パラレロテレスコープとコーンテレスコープの代表的な2種の支台装置として, そのミリング法および材料, 器材の研究開発とともに発達して来ている. これらのミリング法や器材は, 従来, 被削金属を金合金とし, なかでも白金加金を中心に研究開発されて来たものであるが, 最近では, 強度や経済的理由から, ミリング法を用いた支台装置材料に, Non-precious合金を応用した症例も見うけれ, Non-precious合金に対する切削条件や, 切削工具の基礎的研究, 開発が待たれている.
Practice : 歯科学
Keywords : Non-precious, ミリングカッター, 研削

English

Title : Basic Research on the Newly-developed Milling Cutters for Non-precious Alloys
Subtitle :
Authors : Atsushi TODA, Etsuro Matsuo
Authors(kana) :
Organization : 1st Department of Prosthetic Dentistry, Kanagawa Dental College
Journal : Kanagawa Shigaku
Volume : 21
Number : 2
Page : 149-175
Year/Month : 1986 / 9
Article : Original article
Publisher : Kanagawa Odontological Society
Abstract : [Abstract] : Dental milling technics up to now have chiefly made use of dental platinum added gold alloys, the materials which have undergone the greatest research and development. Recently, however, there have been reports on cases in which non-precious alloys were used as materials in milling technics because of their strength and economy. This has resulted in a need for basic research on cutting conditions for non-precious alloys as well as research and development for cutting tools. For these reasons, this study concentrated on developing methods and tools for grinding non-precios alloys with diamond cutting tools in addition to studying the cutting tools and conditions for milling non-precious alloys. The following results were obtained. 1. Diamond milling cutters were seen as possessing better cutting efficiency when compared with carbide milling cutters. 2. The following conditions were considered favorable for diamond milling cutters : a diamond grain size of 140/170, a cutting speed of 20,000 r.p.m., a cutting pressure of 250 gw and use of cutting oil. 3. The three types of diamond milling cutters for finishing (grain size : #500, #800, #1000) showed a better cutting surface smoothness when compared with carbide milling cutters. 4. Cutting conditions for diamond milling cutters used in finishing included use of oil during cutting and a cutting speeed of 10,000 to 20,000 r.p.m.. 5. When diamond milling cutters are used under the conditions listed in items 1 to 4, it is possible to mill non-precious alloys under routine conditions.
Practice : Dentistry
Keywords : Non-precious