Multi-part dental cement
US11173100B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 20, 2017 |
| Grant date | Nov 16, 2021 |
| Priority date | — |
| Expiry date | Nov 27, 2037 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61K6/76
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
The present invention provides a dental cement showing excellent storage stability, undergoing little change in paste properties during long-term storage, and having a small solidification risk during long-term storage. The present invention relates to a multi-part dental cement comprising: a first paste comprising an acid group-containing (meth)acrylic polymerizable monomer (a), a polyfunctional (meth)acrylic polymerizable monomer (b) containing no acid group, an oxidizing agent (c-1) of a chemical polymerization initiator, and a filler (d); and a second paste comprising a polyfunctional (meth)acrylic polymerizable monomer (b) containing no acid group, a reducing agent (c-2) of a chemical polymerization initiator, and a filler (e), wherein the filler (d) is treated with a surface treatment agent and has an average particle diameter of 0.01 to 50.0 μm, the surface treatment agent comprises a silane coupling agent (A) represented by the general formula (1) and an organosilazane (B) represented by the general formula (2).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.