Flexible dental composite compositions and restorative methods using flexible dental compositions
US5865623A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Mar 12, 1997 |
| Grant date | Feb 2, 1999 |
| Priority date | — |
| Expiry date | Mar 12, 2017 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61K6/887
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
Flexible dental composite compositions and restorative compositions are provided comprising (a) about 2 to 15 weight percent of a flexible monomer portion comprising one or more flexible comonomers of the general formula R.sup.1 --O--(CH--R.sup.2).sub.n --O--!.sub.z --R.sup.3 wherein R.sup.1 and R.sup.3 are acrylate or methacrylate functional groups, R.sup.2 is selected from the group of hydrogen, methyl and ethyl, n is from 3 to 5 and z is from about 3 to about 20 and the monomers have average molecular weights from at least about 300 or higher, (b) about 30 to about 80 weight percent of a filler portion, (c) about 18 to 60 weight percent of a comonomer portion comprising one or more comonomers capable of polymerizing with the flexible monomer portion, and (d) a polymerization catalyst system for polymerizing and hardening the composition. Compositions according to the invention are useful in Class V and other types of dental restorations. Methods for using such compositions in such restorative procedures are also provided.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.