Opaque imparting liquid for zirconia

Patent metadata

Field	Value
Publication number	US-11622840-B2
Application number	US-201916367459-A
Country	US
Kind code	B2
Filing date	Mar 28, 2019
Priority date	Mar 30, 2018
Publication date	Apr 11, 2023
Grant date	Apr 11, 2023

Abstract

To provide a liquid material which can only adjust transparency by applying on a part of a zirconia crown having high transparency, without coloring.
The present disclosure provides an opaque imparting liquid used for a prosthesis device cut and machined from a dental zirconia for cutting and machining, comprising;
(a) 10 to 39 wt. % of a water-soluble aluminum compound and/or a water-soluble lanthanum compound, (b) 60 to 89 wt. % of water, and (c) 1 to 20 wt. % of an organic solvent.

First claim

What is claimed is:

1. An opaque imparting liquid used for a prosthesis device cut and machined from a dental zirconia for cutting and machining, consisting of:
(a) 10 to 39 wt. % of a water-soluble aluminum compound and/or a water-soluble lanthanum compound,
(b) 60 to 89 wt. % of water, and
(c) 1 to 20 wt. % of an organic solvent, wherein the opaque imparting liquid further consists of an organic marker.

2. The opaque imparting liquid according to claim 1 , wherein
the organic solvent (c) contains a member selected from the group consisting of alcohols, polyol and glycol ethers.

3. The opaque imparting liquid according to claim 1 , wherein
the water-soluble aluminum compound and/or the water-soluble lanthanum compound (a) contains aluminum acetate and/or lanthanum acetate.

4. The opaque imparting liquid according to claim 1 , wherein
the dental zirconia for cutting and machining is colored by a zirconia powder where iron, erbium and/or cobalt is solid-solved.

5. An opaque imparting method comprising;
applying the opaque imparting liquid according to claim 1 only to an inner surface of a prosthesis device cut and machined from a dental zirconia for cutting and machining.

6. The opaque imparting method according to claim 5 , wherein
the prosthesis device cut and machined from the dental zirconia for cutting and machining is a crown or a bridge.

7. The opaque imparting liquid according to claim 2 , wherein
the water-soluble aluminum compound and/or the water-soluble lanthanum compound (a) contains aluminum acetate and lanthanum acetate.

8. The opaque imparting liquid according to claim 2 , wherein
the dental zirconia for cutting and machining is colored by a zirconia powder where iron, erbium and/or cobalt is solid-solved.

9. The opaque imparting liquid according to claim 3 , wherein
the dental zirconia for cutting and machining is colored by a zirconia powder where iron, erbium and/or cobalt is solid-solved.

10. An opaque imparting method comprising;
applying the opaque imparting liquid according to claim 9 only to an inner surface of a prosthesis device cut and machined from a dental zirconia for cutting and machining.

11. The opaque imparting method according to claim 10 , wherein
the prosthesis device cut and machined from the dental zirconia for cutting and machining is a crown or a bridge.

12. An opaque imparting method comprising;
applying the opaque imparting liquid according to claim 2 only to an inner surface of a prosthesis device cut and machined from a dental zirconia for cutting and machining.

13. The opaque imparting method according to claim 12 , wherein
the prosthesis device cut and machined from the dental zirconia for cutting and machining is a crown or a bridge.

14. An opaque imparting method comprising;
applying the opaque imparting liquid according to claim 3 only to an inner surface of a prosthesis device cut and machined from a dental zirconia for cutting and machining.

15. The opaque imparting method according to claim 14 , wherein
the prosthesis device cut and machined from the dental zirconia for cutting and machining is a crown or a bridge.

16. An opaque imparting method comprising;
the opaque imparting liquid according to claim 4 is applied only to an inner surface of a prosthesis device cut and machined from a dental zirconia for cutting and machining.

17. The opaque imparting method according to claim 16 , wherein
the prosthesis device cut and machined from the dental zirconia for cutting and machining is a crown or a bridge.

Assignees

• Shofu Inc

Inventors

• Kitamura Toshio
• Takahashi Shuhei

Classifications

• C04B35/48

  based on zirconium or hafnium oxides, zirconates, {zircon} or hafnates · CPC title

• A61K6/60

  comprising organic or organo-metallic additives · CPC title

• A61K6/70

  comprising inorganic additives · CPC title

• C04B41/49

  Compounds having one or more carbon-to-metal or carbon-to-silicon linkages {; Organo-clay compounds; Organo-silicates, i.e. ortho- or polysilicic acid esters (to obtain SiO2C04B41/5089, C04B41/5035); Organo-phosphorus compounds; Organo-inorganic complexes} · CPC title

• C04B2235/449

  Organic acids, e.g. EDTA, citrate, acetate, oxalate · CPC title