Agent for conditioning dentin and enamel

Patent metadata

Field	Value
Publication number	US-11020323-B2
Application number	US-201615751597-A
Country	US
Kind code	B2
Filing date	Aug 12, 2016
Priority date	Aug 12, 2015
Publication date	Jun 1, 2021
Grant date	Jun 1, 2021

Abstract

Aqueous solution of a transition and main group metal salt for use as conditioning agent in dental restoration therapy.

First claim

The invention claimed is:

1. A conditioning agent for teeth comprising
an aqueous solution which comprises 0.5 to 25 wt.-% of one or more transition and/or main group metal salts,
wherein the transition and/or main group metal salt is a salt of Zr 4+ , Hf 4+ , Ti 4+ or Sn 4+ .

2. The conditioning agent according to claim 1 ,
wherein the transition or main group metal salt comprises as anion Cl − , Br − , I − , NO 3 − , SO 4 2− , optionally as mixed salts with oxoanions.

3. The conditioning agent according to claim 1 ,
which comprises as transition and/or main group metal salt ZrOCl 2 , ZrO(NO 3 ) 2 , Zr(SO 4 ) 2 , Hf(SO 4 ) 2 , HfCl 4 , Hf(NO 3 ) 4 , TiOSO 4 , SnCl 4 or a mixture of these salts.

4. The conditioning agent according to claim 1 ,
which additionally comprises a further metal salt which is selected from the salts of Cu 2+ , Zn 2+ , Al 3+ and mixtures thereof.

5. The conditioning agent according to claim 4 ,
which additionally comprises Al(NO 3 ) 3 , CuSO 4 , ZnSO 4 or a mixture thereof.

6. The conditioning agent according to claim 1 ,
wherein the metal ion is Zr 4+ , Hf 4 or Ti 4+ .

7. The conditioning agent according to claim 6 ,
wherein the transition or main group metal salt comprises as anion Cl − , Br − , I − , NO 3 − , SO 4 2 , optionally as mixed salts with oxoanions.

8. The conditioning agent according to claim 6 ,
which comprises as transition and/or main group metal salt ZrOCl 2 , ZrO(NO 3 ) 2 , Zr (SO 4 ) 2 , Hf(SO 4 ) 2 , HfCl 4 , Hf(NO 3 ) 4 , TiOSO 4 or a mixture of these salts.

9. The conditioning agent according to claim 6 ,
which additionally comprises a further metal salt which is selected from the salts of Cu 2+ , Zn 2+ , Al 3+ , Sn 4+ and mixtures thereof.

10. The conditioning agent according to claim 9 ,
which comprises as a further metal salt Al (NO 3 ) 3 , CuSO 4 , ZnSO 4 , SnCl 4 or a mixture thereof.

11. The conditioning agent according to claim 1 ,
which contains no added acid.

12. The conditioning agent according to claim 1 ,
which comprises 2 to 15 wt.-% transition and/or main group metal salt, 36 to 98 wt.-% water and 0 to 49 wt.-% organic solvent.

13. The conditioning agent according to claim 1 ,
which comprises as organic solvent glycerol, ethanol, ethylene glycol, propylene glycol, propanediol, butanediol and polyethylene glycol or a mixture thereof.

14. The conditioning agent according to claim 1 ,
which comprises 4 to 10 wt.-% transition and/or main group metal salt, 42 to 96 wt.-% water and 0 to 48 wt.-% organic solvent.

Assignees

• Ivoclar Vivadent Ag

Inventors

• Catel Delphine
• Bock Thorsten

Classifications

• A61K6/70 Primary

  comprising inorganic additives · CPC title

• A61K6/40

  Primers (for dental adhesives A61K6/30) · CPC title

• A61K6/20

  Protective coatings for natural or artificial teeth, e.g. sealings, dye coatings or varnish · CPC title