Device and method for heating dental composite materials
US10172690B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 10, 2017 |
| Grant date | Jan 8, 2019 |
| Priority date | — |
| Expiry date | Jul 10, 2037 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61C5/66
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A heater assembly made of positive temperature coefficient (PTC) material such as barium titanate ceramic that may be self-regulating. A dental compule that holds a dental (e.g. composite) material may be made from thermally conductive plastic and/or electrically conductive plastic that is self-heating when an electric current is passed through the compule. A compule may be generally cylindrical and include an electrically conductive polymer that may exhibit PTC characteristics while generating heat when electric current is applied to the polymer, two flat contact areas each disposed along one portion of the generally cylindrical compule, an orifice or opening positioned at one end of the compule, an inner chamber; and extrudable dental material held within the inner chamber.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.