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1. WO2000010509 - GLASS-CERAMIC MATERIAL FOR DENTAL RESTORATION AND METHOD FOR PRODUCING SAME

Publication Number WO/2000/010509
Publication Date 02.03.2000
International Application No. PCT/CH1999/000249
International Filing Date 09.06.1999
Chapter 2 Demand Filed 24.01.2000
IPC
A61K 6/06 2006.01
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
KPREPARATIONS FOR MEDICAL, DENTAL, OR TOILET PURPOSES
6Preparations for dentistry
02Use of preparations for artificial teeth, for filling or for capping teeth
06Use of inorganic cements
C03C 10/00 2006.01
CCHEMISTRY; METALLURGY
03GLASS; MINERAL OR SLAG WOOL
CCHEMICAL COMPOSITION OF GLASSES, GLAZES, OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
10Devitrified glass ceramics, i.e. glass ceramics having a crystalline phase dispersed in a glassy phase and constituting at least 50% by weight of the total composition
C04B 35/19 2006.01
CCHEMISTRY; METALLURGY
04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
BLIME; MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
35Shaped ceramic products characterised by their composition; Ceramic compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
01based on oxides
16based on silicates other than clay
18rich in aluminium oxide
19Alkali metal aluminosilicates, e.g. spodumene
CPC
A61K 6/16
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
KPREPARATIONS FOR MEDICAL, DENTAL, OR TOILET PURPOSES
6Preparations for dentistry
15Compositions characterised by their physical properties
16Refractive index
A61K 6/17
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
KPREPARATIONS FOR MEDICAL, DENTAL, OR TOILET PURPOSES
6Preparations for dentistry
15Compositions characterised by their physical properties
17Particle size
A61K 6/78
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
KPREPARATIONS FOR MEDICAL, DENTAL, OR TOILET PURPOSES
6Preparations for dentistry
70comprising inorganic additives
78Pigments
A61K 6/816
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
KPREPARATIONS FOR MEDICAL, DENTAL, OR TOILET PURPOSES
6Preparations for dentistry
80Preparations for artificial teeth, for filling teeth or for capping teeth
802comprising ceramics
816comprising titanium oxide
A61K 6/822
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
KPREPARATIONS FOR MEDICAL, DENTAL, OR TOILET PURPOSES
6Preparations for dentistry
80Preparations for artificial teeth, for filling teeth or for capping teeth
802comprising ceramics
822comprising rare earth metal oxides
A61K 6/827
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
KPREPARATIONS FOR MEDICAL, DENTAL, OR TOILET PURPOSES
6Preparations for dentistry
80Preparations for artificial teeth, for filling teeth or for capping teeth
802comprising ceramics
827Leucite
Applicants
  • CHEMICHL AG [LI]/[LI] (AT, BE, CA, CH, CY, DE, DK, ES, FI, FR, GB, GR, IE, IT, LU, MC, NL, PT, SE)
  • BEHAM, Gerhard [LI]/[LI] (UsOnly)
Inventors
  • BEHAM, Gerhard
Agents
  • LIEBETANZ, Michael
Priority Data
1685/9817.08.1998CH
Publication Language German (DE)
Filing Language German (DE)
Designated States
Title
(DE) GLASKERAMIK FÜR DIE DENTALE RESTAURATION UND VERFAHREN ZU DEREN HERSTELLUNG
(EN) GLASS-CERAMIC MATERIAL FOR DENTAL RESTORATION AND METHOD FOR PRODUCING SAME
(FR) VITRO-CERAMIQUE DESTINEE A LA RESTAURATION DENTAIRE ET SON PROCEDE DE PRODUCTION
Abstract
(DE)
Eine Glaskeramik für die dentale Restauration weist einen hohen kristallinen Leucitgehalt auf. Dabei sind die Leucitkristalle nadel- oder stäbchenförmig und weisen eine Dicke zwischen 0,3 und 1,5 Mikrometer auf und ihre Länge beträgt zwischen 7,5 und 20 Mikrometer, wobei die Glaskeramik im wesentlichen ein semitransparentes Material ist, welches (in Gewichtsprozenten ausgedrückt) umfasst: SiO2 67 - 71 %, Al2O3 8 - 12 %, Na2O 3 - 5 %, K2O 8 - 10 %, CaO 1 - 3 %, BaO 0,2 - 2 %, CeO2 0,5 - 2 %, TiO2 0,2 - 1 % und B2O3 0,5 - 2 %. Dieser glaskeramische Werkstoff weist eine verbesserte Bruchfestigkeit auf und eröffnet neue Indikationsbereiche für den Einsatz von Vollkeramik in der Dentaltechnik, insbesondere die matallfreie Restauration.
(EN)
The invention relates to a glass-ceramic material for dental restoration having a high crystalline leucite content. The leucite crystals are needle- or rod-shaped, have a thickness of between 0.3 and 1.5 micrometers and are between 7.5 and 20 micrometers in length. Said glass-ceramic material is substantially semi-transparent and contains, in % by weight: between 67 and 71 % SiO2, between 8 and 12 % Al2O3, between 3 and 5 % Na2O, between 8 and 10 % K2O, between 1 and 3 % CaO, between 0.2 and 2 % BaO, between 0.5 and 2 % CeO2, between 0.2 and 1 % TiO2, and between 0.5 and 2 % B2O3. The above glass-ceramic material presents improved fracture strength and offers new indications for the use of full ceramic materials in dental technology, notably metal-free dental restoration.
(FR)
L'invention concerne une vitro-céramique qui est destinée à la restauration dentaire et qui présente une teneur leucitique cristalline élevée. Les cristaux leucitiques ont la forme d'aiguilles ou de bâtonnets et ont une épaisseur comprise entre 0,3 et 1,5 micromètres, une longueur comprise 7,5 et 20 micromètres. La vitro-céramique est sensiblement un matériau transparent qui contient (en % en poids): SiO2 67 à 71 %, Al2O3 8 à 12 %, Na2O 3 à 5 %, K2O 8 à 10 %, CaO 1 à 3 %, BaO 0,2 à 2 %, CeO2 0,5 à 2 %, TiO2 0,2 à 1 % et B2O3 0,5 à 2 %. Ce matériau vitro-céramique présente une résistance à la rupture élevée et ouvre de nouvelles perspectives d'utilisation de la céramique pleine dans la technique dentaire, notamment la restauration sans métal.
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