Global Patent Index - EP 1098623 A2

EP 1098623 A2 2001-05-16 - ODONTOSTOMATOLOGIC USE OF APATITE-BASED NANOSTRUCTURED MATERIALS

Title (en)

ODONTOSTOMATOLOGIC USE OF APATITE-BASED NANOSTRUCTURED MATERIALS

Title (de)

ODONTOSTOMATOLOGISCHE VERWENDUNG VON NANOSTRUKTURIERTEM MATERIAL AUF APATIT-BASIS

Title (fr)

UTILISATION ODONTOLOGIQUE DE MATIERES NANOSTRUCTUREES A BASE D'APATITE

Publication

EP 1098623 A2 (EN)

Application

EP 99936957 A

Priority

  • IT 9900224 W
  • IT RM980476 A

Abstract (en)

[origin: WO0003747A2] Biocompatible nanocrystalline materials based on apatite with high specific surface properties, having average size of the crystallites comprised between 0.5 and 200 nm and possible lattice deformations and/or defects, are proposed for use in the fields of dentistry and dental hygiene, in particular for the production of preparations, solutions, toothpastes and materials for the remineralisation of enamel and dentine and for the treatment of dentine hypersensitivity. The apatite-based nanostructured materials appear to possess specific physico-chemical properties connected to their nanocrystalline and defective nature, such as the remarkable surface chemical reactivity and the hygroscopicity, which allow the material to recrystallise as a result of the metastable character of the nanocrystalline system, to be used for the remineralisation of enamel and dentine. In addition, they possess the most suitable grain sizes to easily and deeply penetrate mechanically within the dentinal tubules, and also cause it to cement the internal surface thereof, both by swelling and by readily reacting with the natural tissues.

IPC 1-7 (main, further and additional classification)

A61K 6/033

IPC 8 full level (invention and additional information)

A61K 8/24 (2006.01); A61Q 11/00 (2006.01)

CPC (invention and additional information)

A61K 8/24 (2013.01); A61K 6/0008 (2013.01); A61K 6/0017 (2013.01); A61K 6/0035 (2013.01); A61K 6/0038 (2013.01); A61K 6/0085 (2013.01); A61K 6/06 (2013.01); A61K 6/08 (2013.01); A61Q 11/00 (2013.01); B82Y 5/00 (2013.01); A61K 2800/413 (2013.01)

Citation (search report)

See references of WO 0003747A3

Designated contracting state (EPC)

AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

EPO simple patent family

WO 0003747 A2 20000127; WO 0003747 A3 20000511; AU 5191999 A 20000207; CA 2338021 A1 20000127; EP 1098623 A2 20010516; IT 1299563 B1 20000316; IT RM980476 A1 20000118; IT RM980476 D0 19980717

INPADOC legal status


2008-02-22 [REG HK WD] APPLICATIONS WITHDRAWN, DEEMED TO BE WITHDRAWN, OR REFUSED AFTER PUBLICATION IN HONG KONG

- Document: HK 1038688

2004-08-11 [18D] APPLICATION DEEMED TO BE WITHDRAWN

- Effective date: 20040203

2003-12-17 [17Q] FIRST EXAMINATION REPORT

- Effective date: 20031103

2001-05-16 [17P] REQUEST FOR EXAMINATION FILED

- Effective date: 20010120

2001-05-16 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A2

- Designated State(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

2001-05-16 [AX] REQUEST FOR EXTENSION OF THE EUROPEAN PATENT TO:

- Free text: AL;LT;LV;MK;RO;SI