| Patent Number |
Title Of Patent |
Date Issued |
| 6802894 |
Lithium disilicate glass-ceramics |
October 12, 2004 |
| This invention is directed to lithium disilicate (Li.sub.2 Si.sub.2 O.sub.5) based glass-ceramics comprising silica, lithium oxide, alumina, potassium oxide and phosphorus pentoxide. The glass-ceramics are useful in the fabrication of single and multi-unit dental restorations (e.g. a |
| 6660073 |
Method of manufacture of dental porcelain having small leucite crystallites |
December 9, 2003 |
| A porcelain composition for dental restorations comprising a leucite crystallite phase and a glass matrix phase, wherein the leucite crystallites possess diameters not exceeding about 10 micron. Preferably, the porcelain composition has a maturing temperature from about 750.degree. t |
| 6648645 |
Method for manufacturing dental restorations |
November 18, 2003 |
| A ceramic tape is provided in its green state so that it is malleable and formable to a mold for forming a dental restoration, but will not break or crack as it is applied to the mold. Pressure may be applied to further form or adapt the ceramic tape to the shape of the mold. Heat is app |
| 6554615 |
Porcelain compositions for low expansion all-porcelain cores and alloys |
April 29, 2003 |
| A dental porcelain composition comprises an amorphous glass phase with a maturing temperature less than about 850.degree. C., wherein the amorphous glass phase, in one embodiment, comprises: |
| 6517623 |
Lithium disilicate glass ceramics |
February 11, 2003 |
| This invention is directed to lithium disilicate (Li.sub.2 Si.sub.2 O.sub.5) based glass-ceramics comprising silica, lithium oxide, alumina, potassium oxide and phosphorus pentoxide. The glass-ceramics are useful in the fabrication of single and multi-unit dental restorations (e.g. a |
| 6455451 |
Pressable lithium disilicate glass ceramics |
September 24, 2002 |
| This invention is directed to lithium disilicate (Li.sub.2 Si.sub.2 O.sub.5) based glass-ceramics comprising silica, lithium oxide, alumina, potassium oxide and phosphorus pentoxide. The glass-ceramics are useful in the fabrication of single and multi-unit dental restorations (e.g. a |
| 6428614 |
Dental porcelains |
August 6, 2002 |
| Opaque porcelains for use with metal cores in the manufacture of PFM restorations. The porcelains exhibit a coefficient of thermal expansion (CTE) substantially equal to or slightly above the CTE of the metal to which it is applied. The porcelains exhibit a CTE equal to or up to about |
| 6413660 |
High-strength dental restorations |
July 2, 2002 |
| High strength ceramic components for use in dental applications are provided with a bonding layer disposed thereon to increase the bonding properties of the ceramic component in order that the ceramic component may better bond to a resin material, ceramic material or composite materi |
| 6375729 |
Machinable glass-ceramics |
April 23, 2002 |
| Micaceous glass-ceramics are useful in the fabrication of single and multi-unit dental restorations including but not limited to orthodontic appliances, bridges, space maintainers, tooth replacement appliances, splints, crowns, partial crowns, dentures, posts, teeth, jackets, inlays, |
| 6354836 |
Methods of producing dental restorations using CAD/CAM and manufactures thereof |
March 12, 2002 |
| Ceramic precursor powders are combined with a binder and pressed into blocks or similar shapes to form green bodies. The ceramic powders consist of fairly uniform particles thoroughly dispersed to be essentially free of agglomerates such that it will sinter predictably and isotropically |
| 6322728 |
Mass production of dental restorations by solid free-form fabrication methods |
November 27, 2001 |
| Solid free form fabrication techniques such as fused deposition modeling and three-dimensional printing are used to create a dental restoration. Three-dimensional printing includes ink-jet printing a binder into selected areas of sequentially deposited layers of powder. Each layer is |
| 6206958 |
Dental porcelain compositions |
March 27, 2001 |
| Porcelain compositions of the present invention comprises particulate of one or more glass or glass-ceramic powder components. Additionally, one or more opacifing agents, pigments, fluorescing agents and the like may be included in the composition. Based on volume percent, the particulat |
| 6155830 |
Dental restorations |
December 5, 2000 |
| A dental restoration comprising a porcelain composition, comprising a glassy matrix and leucite crystallites embedded therein, and having maturing temperatures in the range from about 680.degree. C. to about 870.degree. C. and CTEs in the range from about 12 to about 15, more prefera |
| 6133174 |
Machinable leucite-containing porcelain compositions and methods of manufacture |
October 17, 2000 |
| 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 te |
| 6090194 |
Cubic leucite-containing dental porcelains |
July 18, 2000 |
| A dental porcelain composition comprising a continuous glassy phase and a discontinuous, substantially uniform crystalline phase comprising cubic leucite. The porcelain exhibits coefficients of thermal expansion in the range of about 11 to about 17.times.10.sup.-6 /.degree. C. (measured |
| 6087282 |
Non-greening porcelain compositions |
July 11, 2000 |
| Porcelain compositions of the present invention possess non-greening properties and comprise one or more glass or glass-ceramic components. Additionally, an oxygen release agent is included in the compositions. The porcelain compositions may vary depending upon the specific thermal p |
| 6086662 |
Low fusing dental porcelains containing tetragonal rubidium-leucite |
July 11, 2000 |
| A dental porcelain composition, comprising a glassy matrix and rubidium leucite crystallites embedded therein, and having maturing temperatures in the range from about 650.degree. C. to about 800.degree. C. and CTEs in the range from about 13 to about 17, more preferably in the range fro |
| 6030209 |
Method for accurately preparing the color of a dental restoration |
February 29, 2000 |
| The present invention relates to a method for preparing the color of a dental restoration using a spectrophotometer and a unique color system for porcelain dental restorations which enables a dentist or technician to manipulate the various color components of the porcelain, hue, chroma, |
| 6022819 |
Dental porcelain compositions |
February 8, 2000 |
| Porcelain compositions of the present invention comprise one or more glass or glass-ceramic powder components. Additionally, one or more opacifying agents, pigments, fluorescing agents and the like may be included in the composition. Based on volume percent, 10% of the particulate in the |
| 5944884 |
Dental porcelain composition |
August 31, 1999 |
| A porcelain composition for dental restorations comprising a leucite crystallite phase and a glass matrix phase, wherein the leucite crystallites possess diameters not exceeding about 10 micron. Preferably, the porcelain composition has a maturing temperature from about 750.degree. t |
| 5775912 |
Method of producing a dental restoration using CAD/CAM |
July 7, 1998 |
| A method of making a dental porcelain restoration comprises providing a soft-sintered dental porcelain pellet; milling the soft-sintered pellet under the control of a CAD/CAM system to provide a tooth structure; investing the tooth structure with an investment refractory material to |
| 5653791 |
Two-phase dental forcelain composition |
August 5, 1997 |
| A two-phase porcelain composition for dental restorations comprising a leucite crystallite phase dispersed in a feldspathic glass matrix, a maturing temperature of from about 750.degree. to about 1050.degree. C. and a coefficient of thermal expansion of from about 12.times.10.sup.-6 |
| 5614330 |
Porcelain coating compositions for low expansion porcelain cores and the resulting all-ceramic d |
March 25, 1997 |
| An all-ceramic dental restoration comprising a ceramic core over and at least one coating thereon of a porcelain composition having a maturing temperature of from about 850.degree. to about 1050.degree. C. and a coefficient of thermal expansion of from about 4.0 to about 13 (room tem |
| 5314334 |
Dental procelain bond layer for titanium and titanium alloy copings |
May 24, 1994 |
| Porcelain compositions suitable for layers on metal base dental restorations have fusion temperatures of about 800.degree. C. and lower. The compositions may be employed as coatings on titanium and titanium alloy bases since the compositions have thermal expansion values close to tho |
| 5288232 |
Dental porcelain for titanium and titanium alloys |
February 22, 1994 |
| Porcelain compositions suitable for use as porcelain layers on metal base dental restorations have fusion temperatures of about 800.degree. C. and lower. The compositions may be employed as coatings on titanium and titanium alloy bases since the compositions have thermal expansion values |
| 5180427 |
Fillers for investment and refractory die materials |
January 19, 1993 |
| Phosphate-bonded investments and refractory die materials are provided upon which dental porcelains and/or alloy powders can be sintered. Inorganic fillers are mixed with appropriate binders to produce mold materials which exhibit very high thermal expansion properties without exhibiting |
| 5176747 |
Dental porcelain for titanium and titanium alloys |
January 5, 1993 |
| Porcelain compositions suitable for use as porcelain layers on metal base dental restorations have fusion temperatures of about 800.degree. C. and lower. The compositions may be employed as coatings on titanium and titanium alloy bases since the compositions have thermal expansion values |
| 4828117 |
Porcelain dental restoration having a plurality of uniform, color-matched layers |
May 9, 1989 |
| A porcelain dental restoration having a plurality of layers including a translucent porcelain layer overlying a more opaque ceramic layer, wherein the color of each of the said two layers is uniform and wherein the colors of the said two layers match. |
| 4639218 |
Crystalline alumina orthodontic bracket |
January 27, 1987 |
| There is disclosed an orthodontic bracket including a base member for attaching to a tooth and a body member extending from the base member. The body member includes walls that define an archwire groove. The walls are made of single crystal alumina. Preferably, the entire bracket is made |
| 4557691 |
Dental porcelain paste and method of using the same |
December 10, 1985 |
| A porcelain paste comprising a porcelain powder mixed with an aqueous colloidal dispersion of a urethane polymer. The paste can be applied as the first layer to a dental coping, and does not need to be fired prior to the addition of the body porcelain layers. |
| 4551099 |
Ceramic dental restorative |
November 5, 1985 |
| An all-ceramic dental restorative comprising a core and a glaze having the following composition: |
| 4515634 |
Castable glass-ceramic composition useful as dental restorative |
May 7, 1985 |
| A glass ceramic, useful in making dental crowns and bridges, consisting essentially of: |
| 4481036 |
Glaze for use on non-metallic dental copings |
November 6, 1984 |
| A stable glaze for use on ceramic dental copings has the following composition: |
| 4455383 |
Single-frit glass ceramic |
June 19, 1984 |
| There is disclosed a single-frit porcelain powder, suitable for use as a porcelain layer on metal-base dental restorations, and having a fired coefficient of thermal expansion within the range of from about 12 to about 14.times.10.sup.-6 in./in. .degree.C., wherein said single frit p |
| 4209334 |
Porous ceramic seals and method of making same |
June 24, 1980 |
| A ceramic-metal composite laminate capable of exposure to high temperature differentials without damage, consisting of an inner ceramic layer, an outer metal layer and an intermediate interface layer of a low modulus metallic low density structure having a high melting point. The ceramic |
| 4094673 |
Abradable seal material and composition thereof |
June 13, 1978 |
| An abradable seal material suitable for high temperature application in turbomachinery comprising a sintered mat of (1) randomly disposed fine metal fibers, or (2) fine metal powders or (3) both fibers and powders. The metal fiber and powder are composed of an alloy consisting essentiall |
| 4080204 |
Fenicraly alloy and abradable seals made therefrom |
March 21, 1978 |
| Abradable seals for compressors and turbines are made of fibers and powders of an alloy consisting essentially of iron, nickel, chromium, aluminum, and yttrium. The alloy preferably contains 22-27 weight percent nickel, 18-22 weight percent chromium, 9-15 weight percent aluminum, 0.0005- |
| 4075364 |
Porous ceramic seals and method of making same |
February 21, 1978 |
| A ceramic-metal composite laminate capable of exposure to high temperature differentials without damage, consisting of an inner ceramic layer, an outer metal layer and an intermediate interface layer of a low modulus metallic low density structure having a high melting point. The ceramic |
