Title:
MACHINABLE LEUCITE-CONTAINING PORCELAIN COMPOSITIONS AND METHODS OF MANUFACTURE
Document Type and Number:
WIPO Patent Application WO1999018911
Kind Code:
A3
Abstract:
A method for producing a machinable feldspathic porcelain comprising leucite is presented. Machinability is imparted to feldspathic porcelains by achieving homogeneous distribution of fine crystalline constituent comprised of at least one of the following leucite phases: potassium tetragonal leucite, rubidium leucite, cesium stabilized cubic leucite, rubidium stabilized cubic leucite, and pollucite. The porcelains produced in accordance with the present invention are readily machinable by using available diamond tooling techniques. Furthermore, the porcelains are especially useful for the fabrication of dental restorations using CAD/CAM technology.
Inventors:
BRODKIN DMITRI
PANZERA CARLINO
PANZERA PAUL
PANZERA CARLINO
PANZERA PAUL
Application Number:
PCT/US1998/021659
Publication Date:
July 08, 1999
Filing Date:
October 14, 1998
Export Citation:
Assignee:
JENERIC PENTRON INC (US)
International Classes:
A61C5/08; A61K6/027; A61K6/06; C03C10/00; C03C10/16; C04B35/18; A61C9/00; A61C13/00; (IPC1-7): A61K6/02; C04B35/19
Foreign References:
| US5204077A | 1993-04-20 | |||
| EP0543065A1 | 1993-05-26 | |||
| FR2655264A1 | 1991-06-07 |
Other References:
A. PRASAD: "19th annual session American Association for Dental Research", JOURNAL OF DENTAL RESEARCH, 1990, us, pages 2100, XP002102556
DENRY I L ET AL: "Crystallization kinetics of a low-expansion feldspar glass for dental applications.", JOURNAL OF BIOMEDICAL MATERIALS RESEARCH, (1998 SEP 5) 41 (3) 398-404. JOURNAL CODE: HJJ. ISSN: 0021-9304., United States, XP002102544
DENRY I L ET AL: "Crystallization kinetics of a low-expansion feldspar glass for dental applications.", JOURNAL OF BIOMEDICAL MATERIALS RESEARCH, (1998 SEP 5) 41 (3) 398-404. JOURNAL CODE: HJJ. ISSN: 0021-9304., United States, XP002102544
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