Ceramic material for veneering metallic dental protheses

Details Ceramic material for veneering metallic dental protheses Ceramic material for veneering metallic dental protheses

1993-09-14

1994-05-03

Group, Karl

Compositions: coating or plastic

Coating or plastic compositions

Dental

501 59, 501 64, 501 66, 4332121, A61C 13083, C03C 3091

Patent

active

053083911

ABSTRACT:
Ceramic masses with processing temperatures of approximately 770.degree. C. and coefficients of thermal expansion of 8-9.multidot.10.sup.-6 K.sup.-1 and 16-17.5.multidot.10.sup.-6 K.sup.-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.sub.2, 4 to 15% by weight Al.sub.2 O.sub.3, 0.7 to 2.5% by weight B.sub.2 O.sub.3, 0 to 0.9% by weight Sb.sub.2 O.sub.3, 0 to 0.5% by weight CeO.sub.2, 0 to 2.5% by weight BaO, 0 to 0.5% by weight CaO, 7 to 12% by weight K.sub.2 O, 6 to 11% by weight Na.sub.2 O, 0.55 to 1.4% by weight Li.sub.2 O and 0.2 to 1.0% by weight F.sub.2.

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Scholze, H., "Glas, Natur, Struktur, Eigenschaften" ("Glass, Nature, Structure, Properties"), 1965, pp. 54-67; English language translation attached.

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