Machinable leucite-containing porcelain compositions and methods

Compositions: ceramic – Ceramic compositions – Devitrified glass-ceramics


Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0


106 35, 501 32, 501 54, 501 66, 501 70, 501 72, 501 62, 4332011, 4332021, A61K 6027, C03B 2320, C03B 3202




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.

patent: 3723140 (1973-03-01), Beall et al.
patent: 4604366 (1986-08-01), Kacicz et al.
patent: 4798536 (1989-01-01), Katz
patent: 5204077 (1993-04-01), Mori et al.
patent: 5527182 (1996-06-01), Willoughby
patent: 5549476 (1996-08-01), Stern
patent: 5698019 (1997-12-01), Frank et al.
patent: 5775912 (1998-07-01), Panzera et al.
patent: 5994246 (1999-11-01), Denry
Prasad A, Vaidyanathan TK; Crystallization of Cubic Leucite by Composition Additives+; Prepared for Presentation at the Annual Session, American Association for Dental Research, Mar. 9, 1990.
Denry IL, Holloway JA, Rosenstiel SF; Crystallization Kinetics of a Low-Expansion Feldspar Glass for Dental Applications: Journal of Biomedical Materials Research, (Sep. 5, 1998) 41 (3) 398-404.
Hahn C, Teuchert K; Importance of the Glass Ceramic System K2O--A12O3--SiO2 in Dental Porcelain, Ceramic Forum International/Ber Dt. Keram Ges 57 (1980), No. 9-10, pp. 208-214.


Say what you really think

Search for the USA inventors and patents. Rate them and share your experience with other people.


Machinable leucite-containing porcelain compositions and methods does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Machinable leucite-containing porcelain compositions and methods, we encourage you to share that experience with our community. Your opinion is very important and Machinable leucite-containing porcelain compositions and methods will most certainly appreciate the feedback.

Rate now


Profile ID: LFUS-PAI-O-468528

All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.