Apparatus for irradiating dental objects
US4412134A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 15, 1981 |
| Grant date | Oct 25, 1983 |
| Priority date | — |
| Expiry date | Jul 15, 2001 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61C19/003
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
An apparatus for treating, particularly bleaching, dental objects, such as dentures or parts thereof, made of synthetic material includes a support disposed in a drawer for receiving the objects and a lamp disposed above the drawer for emitting radiation in a spectral range (approximately 400 to 500 nm) suitable for the bleaching process. An upper reflector surrounding the lamp reflects from the total radiation emitted by the lamp mainly the portion lying within the said spectral range while it transmits the remaining radiation to the outside. An inner surface of the drawer forms a lower reflector. The support also consists of reflective material and has a central semi-spherical projection to ensure that the object positioned on the support so as to surround the projection is irradiated from all sides. In another embodiment, the support for the dental object is made of glass, and two lamps each surrounded by a reflector are used to irradiate the object from above and below. In this case, the upper lamp and reflector are disposed to emit light in a substantially horizontal direction, and a mirror is disposed above the support to re-direct the irradiation towards the object. The mirr…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.