Patent · US Active

Temporary root canal sealer dispersion

US9895294B2 · kind B2 · utility

0Cited by

5References

14Claims

0Family size

Assignee

Dentsply Sirona Inc. · US

Inventors

Joachim E. Klee · Radolfzell, DE
Christoph Weber · Heidenheim, DE
Andreas E. Grützner · Radolfzell, DE

Key dates

Filing date	Mar 18, 2010
Grant date	Feb 20, 2018
Priority date	—
Expiry date	Jul 25, 2031

Classification

Technology area (CPC A)Human Necessities
CPC primaryA61K6/878
WIPO fieldPharmaceuticals
WIPO sectorChemistry

Abstract

A temporary root canal sealer dispersion having a pH of at least 9 and comprising: (i) an aqueous dispersion medium comprising an oligomer and/or polymer having Lewis basic groups, and optionally a hydroxide of an alkali metal and/or a hydroxide of an alkaline earth metal, and (ii) a dispersed phase comprising a radio-opaque filler, wherein the weight ratio of oligomer and/or polymer having Lewis basic groups to hydroxide of an alkali metal and/or hydroxide of an alkaline earth metal is at least 0.5 when said aqueous dispersion medium comprises a hydroxide of an alkali metal and/or a hydroxide of an alkaline earth metal.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.