Patent US5308391A successfully refreshed from Google Patents.
US5308391A
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Ceramic material for veneering metallic dental protheses
Assignee: Ducera Dental-Gesellschaft mbH
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Filing: 1993-09-14
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Granted: 1994-05-03
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Expires: 2013-09-14
Abstract
Abstract Ceramic masses with processing temperatures of approximately 770° C. and coefficients of thermal expansion of 8-9·10 -6 K -1 and 16-17.5·10 -6 K -1 are required for dental prostheses consisting of low-melting gold alloys and titanium alloys for their veneering. Such ceramic masses are composed of 60 to 75% by weight SiO 2 , 4 to 15% by weight Al 2 O 3 , 0.7 to 2.5% by weight B 2 O 3 , 0 to 0.9% by weight Sb 2 O 3 , 0 to 0.5% by weight CeO 2 , 0 to 2.5% by weight BaO, 0 to 0.5% by weight CaO, 7 to 12% by weight K 2 O, 6 to 11% by weight Na 2 O, 0.55 to 1.4% by weight Li 2 O and 0.2 to 1.0% by weight F 2 .
Inventors
- 👤 Ottmar Komma
- 👤 Juergen Steidl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 04:04
CPC Classifications
C; C03; C03C; C03C8/00; C03C8/24; A; A61; A61K; A61K6/00; A61K6/20; A61K6/80; A61K6/802; A61K6/822; A61K6/84; A61K6/844; C03C8/02; C03C8/06
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
192 words
A method of using a ceramic material to make a veneer on a gold alloy dental prostheses comprising depositing a ceramic material on said gold alloy dental prostheses and firing at a sufficiently high temperature and for a sufficient period of time to form said veneer, said ceramic material having a coefficient of thermal expansion between 20° and 500° C. of 16·10 -6 to 17.5·10 -6 K -1 and comprising 60 to 68% by weight SiO 2 , 10 to 15% by weight Al 2 O 3 , 0.7 to 1.5% by weight B 2 O 3 , 0 to 0.5% by weight Sb 2 O 3 , 0 to 0.5% by weight CeO 2 , 0 to 0.5% by weight BaO, 0.1 to 0.5% by weight CaO, 9 to 12% by weight K 2 O, 9 to 11% by weight Na 2 O, 0.8 to 1.4% by weight Li 2 O and 0.2 to 0.4% by weight F 2 and wherein said gold alloy dental prothesis comprises a gold alloy having a coefficient of thermal expansion between 20° and 500° C. of 16·10 -6 to 17.5· 10 -6 K -1 .
Claim 2
Independent Claim
192 words
A method of using a ceramic material to make a veneer on a gold alloy dental prostheses comprising depositing a ceramic material on said gold alloy dental prostheses and firing at a sufficiently high temperature and for a sufficient period of time to form said veneer, said ceramic material having a coefficient of thermal expansion between 20° and 500° C. of 16·10 -6 to 17.5·10 -6 K -1 and comprising 60 to 68% by weight SiO 2 , 10 to 15% by weight Al 2 O 3 , 0.7 to 1.5% by weight B 2 O 3 , 0 to 0.5% by weight Sb 2 O 3 , 0 to 0.5% by weight CeO 2 , 0 to 0.5% by weight BaO, 0.1 to 0.5% by weight CaO, 9 to 12% by weight K 2 O, 9 to 11% by weight Na 2 O, 0.8 to 1.4% by weight Li 2 O and 0.2 to 0.4% by weight F 2 and wherein said gold alloy dental prothesis comprises a gold alloy having a coefficient of thermal expansion between 20° and 500° C. of 16·10 -6 to 17.5· 10 -6 K -1 .
Claim 3
Dependent Claim
103 words
The method according to claim 1, wherein said ceramic material veneer comprises 62 to 65% by weight SiO 2 , 12 to 15% by weight Al 2 O 3 , 0.8 to 1.2% by weight B 2 O 3 , 0 to 0.2% by weight Sb 2 O 3 , 0 to 0.4% by weight CeO 2 , 0 to 0.1% by weight BaO, 0.2 to 0.4% by weight CaO, 9 to 12% by weight K 2 O, 9 to 11% by weight Na 2 O, 0.8 to 1.2% by weight Li 2 O and 0.2 to 0.4% by weight F 2 .
Claim 4
Dependent Claim
93 words
The method according to claim 1, wherein said ceramic material veneer comprises 63.2% by weight SiO 2 , 12.8% by weight Al 2 O 3 , 0.8% by weight B 2 O 3 , 0.2% by weight Sb 2 O 3 , 0.2% by weight CeO 2 , 0.1% by weight BaO, 0.3% by weight CaO, 10.6% by weight K 2 O, 10.4% by weight Na 2 O, 1.1% by weight Li 2 O, and 0.3% by weight F 2 and has a coefficient of thermal expansion of 16.2·10 -6 K -1 .
Claim 5
Independent Claim
165 words
A method of using a ceramic material to make a veneer on a titanium or titanium alloy dental prostheses comprising depositing a ceramic material on said titanium or titanium alloy dental prostheses and firing at a sufficiently high temperature and for a sufficient period of time to form said veneer, said ceramic material having a coefficient of thermal expansion between 20° and 500° C. of 8·10 -6 to 17.5·10 -6 K -1 and comprising 68 to 75% by weight SiO 2 , 4 to 8% by weight Al 2 O 3 , 2 to 2.5% by weight B 2 O 3 , 0.3 to 0.9% by weight Sb 2 O 3 , 0 to 0.2% by weight CeO 2 , 0.5 to 2.5% by weight BaO, 0 to 0.3% by weight CaO, 7 to 11% by weight K 2 O, 6 to 10% by weight Na 2 O, 0.55 to 0.75% by weight Li 2 O and 0.8 to 1.0% by weight F 2 .
Claim 6
Independent Claim
165 words
A method of using a ceramic material to make a veneer on a titanium or titanium alloy dental prostheses comprising depositing a ceramic material on said titanium or titanium alloy dental prostheses and firing at a sufficiently high temperature and for a sufficient period of time to form said veneer, said ceramic material having a coefficient of thermal expansion between 20° and 500° C. of 8·10 -6 to 17.5·10 -6 K -1 and comprising 68 to 75% by weight SiO 2 , 4 to 8% by weight Al 2 O 3 , 2 to 2.5% by weight B 2 O 3 , 0.3 to 0.9% by weight Sb 2 O 3 , 0 to 0.2% by weight CeO 2 , 0.5 to 2.5% by weight BaO, 0 to 0.3% by weight CaO, 7 to 11% by weight K 2 O, 6 to 10% by weight Na 2 O, 0.55 to 0.75% by weight Li 2 O and 0.8 to 1.0% by weight F 2 .
Claim 7
Dependent Claim
95 words
The method according to claim 4, wherein said ceramic material veneer comprises 70 to 74% by weight SiO 2 , 4 to 7% by weight Al 2 O 3 , 2.1 to 2.4% by weight B 2 O 3 , 0.4 to 0.6% by weight Sb 2 O 3 , 1.8 to 2.2% by weight BaO, 0 to 0.1% by weight CaO, 7 to 9% by weight K 2 O, 7 to 9% by weight Na 2 O, 0.55 to 0.75% by weight Li 2 O and 0.8 to 1.0% by weight F 2 .
Claim 8
Dependent Claim
83 words
The method according to claim 4, wherein said ceramic material veneer comprises 72.5% by weight SiO 2 , 4.5% by weight Al 2 O 3 , 2.5% by weight B 2 O 3 , 0.3% by weight Sb 2 O 3 , 2.2% by weight BaO, 7.5% by weight K 2 O, 9.0% by weight Na 2 O, 0.7% by weight Li 2 O and 0.8% by weight F 2 and has a coefficient of thermal expansion of 8.3·10 -6 K -1 .
Claim 9
Dependent Claim
140 words
A veneered dental prothesis comprising a ceramic material veneer and a dental prothesis, wherein said dental prothesis comprises a gold alloy having a coefficient of thermal expansion between 20° and 500° C. of 16·10 -6 to 17.5·10 -6 K -1 and said ceramic material veneer has a coefficient of thermal expansion between 20° and 500° C. of 16·10 -6 to 17.5·10 -6 K -1 and comprises 60 to 68% by weight SiO 2 10 to 15% by weight Al 2 O 3 , 0.7 to 1.5% by weight B 2 O 3 , 0 to 0.5% by weight Sb 2 O 3 , 0 to 0.5% by weight CeO 2 , 0 to 0.5% by weight BaO, 0.1 to 0.5% by weight CaO, 9 to 12% by weight Li 2 O and 0.2 to 0.4% by weight F 2 .
Claim 10
Dependent Claim
140 words
A veneered dental prothesis comprising a ceramic material veneer and a dental prothesis, wherein said dental prothesis comprises a gold alloy having a coefficient of thermal expansion between 20° and 500° C. of 16·10 -6 to 17.5·10 -6 K -1 and said ceramic material veneer has a coefficient of thermal expansion between 20° and 500° C. of 16·10 -6 to 17.5·10 -6 K -1 and comprises 60 to 68% by weight SiO 2 10 to 15% by weight Al 2 O 3 , 0.7 to 1.5% by weight B 2 O 3 , 0 to 0.5% by weight Sb 2 O 3 , 0 to 0.5% by weight CeO 2 , 0 to 0.5% by weight BaO, 0.1 to 0.5% by weight CaO, 9 to 12% by weight Li 2 O and 0.2 to 0.4% by weight F 2 .
Claim 11
Dependent Claim
105 words
The veneered dental prothesis according to claim 7, wherein said ceramic material veneer comprises 62 to 65% by weight SiO 2 , 12 to 15% by weight Al 2 O 3 , 0.8 to 1.2% by weight B 2 O 3 , 0 to 0.2% by weight Sb 2 O 3 , 0 to 0.4% by weight CeO 2 , 0 to 0.1% by weight BaO, 0.2 to 0.4% by weight CaO, 9 to 12% by weight K 2 O, 9 to 11% by weight Na 2 O, 0.8 to 1.2% by weight Li 2 O and 0.2 to 0.4% by weight F 2 .
Claim 12
Dependent Claim
95 words
The veneered dental prothesis according to claim 7, wherein said ceramic material veneer comprises 63.2% by weight SiO 2 , 12.8% by weight Al 2 O 3 , 0.8% by weight B 2 O 3 , 0.2% by weight Sb 2 O 3 , 0.2% by weight CeO 2 , 0.1% by weight BaO, 0.3% by weight CaO, 10.6% by weight K 2 O, 10.4% by weight Na 2 O, 1.1% by weight Li 2 O and 0.3% by weight F 2 and has a coefficient of thermal expansion of 16.2·10 -6 K -1 .
Claim 13
Dependent Claim
160 words
A veneered dental prothesis comprising a ceramic material veneer and a dental prothesis, wherein said dental prothesis comprises titanium or a titanium alloy having a coefficient of thermal expansion between 20° and 500° C. of 9· 10 -6 to 10·10 -6 K -1 and said ceramic material veneer has a coefficient of thermal expansion between 20° and 500° C. of 8·10 -6 to 9·10 -6 K -1 and comprises 68 to 75% by weight SiO 2 , 4 to 8% by weight Al 2 O 3 , 2 to 2.5% by weight B 2 O 3 , 0.3 to 0.9% by weight Sb 2 O 3 , 0 to 0.2% by weight CeO 2 , 1.5 to 2.5% by weight BaO, 0 to 0.3% by weight CaO, 7 to 11% by weight K 2 O, 6 to 10% by weight Na 2 O, 0.55 to 0.75% by weight Li 2 O and 0.8 to 1.0% by weight F 2 .
Claim 14
Dependent Claim
160 words
A veneered dental prothesis comprising a ceramic material veneer and a dental prothesis, wherein said dental prothesis comprises titanium or a titanium alloy having a coefficient of thermal expansion between 20° and 500° C. of 9· 10 -6 to 10·10 -6 K -1 and said ceramic material veneer has a coefficient of thermal expansion between 20° and 500° C. of 8·10 -6 to 9·10 -6 K -1 and comprises 68 to 75% by weight SiO 2 , 4 to 8% by weight Al 2 O 3 , 2 to 2.5% by weight B 2 O 3 , 0.3 to 0.9% by weight Sb 2 O 3 , 0 to 0.2% by weight CeO 2 , 1.5 to 2.5% by weight BaO, 0 to 0.3% by weight CaO, 7 to 11% by weight K 2 O, 6 to 10% by weight Na 2 O, 0.55 to 0.75% by weight Li 2 O and 0.8 to 1.0% by weight F 2 .
Claim 15
Dependent Claim
97 words
The veneered dental prothesis according to claim 10, wherein said ceramic material veneer comprises 70 to 74% by weight SiO 2 , 4 to 7% by weight Al 2 O 3 , 2.1 to 2.4% by weight B 2 O 3 , 0.4 to 0.6% by weight Sb 2 O 3 , 1.8 to 2.2% by weight BaO, 0 to 0.1% by weight CaO, 7 to 9% by weight K 2 O, 7 to 9% by weight Na 2 O, 0.55 to 0.75% by weight Li 2 O and 0.8 to 1.0% by weight F 2 .
Claim 16
Dependent Claim
85 words
The veneered dental prothesis according to claim 10, wherein said ceramic material veneer comprises 72.5% by weight SiO 2 , 4.5% by weight Al 2 O 3 , 2.5% by weight B 2 O 3 , 0.3% by weight Sb 2 O 3 , 2.2% by weight BaO, 7.5% by weight K 2 O, 9.0% by weight Na 2 O, 0.7% by weight Li 2 O and 0.8% by weight F 2 and has a coefficient of thermal expansion of 8.3·10 -6 K -1 .
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