Apparatus for light-curing a dental object

Patent metadata

Field	Value
Publication number	US-9763760-B2
Application number	US-201514859546-A
Country	US
Kind code	B2
Filing date	Sep 21, 2015
Priority date	Jul 1, 2008
Publication date	Sep 19, 2017
Grant date	Sep 19, 2017

Abstract

The invention relates to an apparatus for irradiating an object, in particular for light-curing a dental object by means of a first radiation, the apparatus comprising at least one radiation source for emitting the first radiation, the apparatus further comprising at least one radiation sensor for measuring at least a second radiation, and the apparatus further comprising a housing. The second radiation is the first radiation reelected by the object.

First claim

What is claimed is:

1. Apparatus for light-curing a dental object by means of a first radiation, the apparatus comprising:
a housing;
at least one radiation source mounted on the housing for emitting the first radiation;
at least one radiation sensor mounted on the housing for measuring at least a second radiation, wherein the second radiation is the first radiation reflected by the object;
wherein the at least one radiation source and the at least one radiation sensor are oriented in the same direction and arranged next to each other on an exterior surface of an end of the housing directed at the dental object to be cured or are part of an exterior surface of an attachment that is detachably mounted on the end of the housing.

2. Apparatus as claimed in claim 1 , wherein the attachment that is detachably mounted on the end of the housing is formed as a hood that can be held above a natural or artificial dental object that is to be treated, so that the emitted radiation from the radiation source can be reflected from the inner walls of the hood.

3. Apparatus as claimed in claim 2 , wherein the hood can be formed in the shape of a dome or as a vertically oriented U-shape which can be randomly positioned along a set of teeth or the hood shape in the sectional view can substantially extend semicircular over the pertaining tooth.

4. Apparatus as claimed in claim 3 , wherein a second or a plurality of radiation sensors are provided and arranged in spaced apart relationship in at least one of the following positions comprising the same plane, at angles relative to the radiation sensor on the surface of the end of the housing or on the inner wall of the hood.

5. Apparatus as claimed in claim 1 , wherein the radiation source is preferably formed by at least one laser diode or light-emitting diode LED, each LED having at least one LED-chip.

6. Apparatus as claimed in claim 1 , wherein the radiation source emits a first radiation having a wavelength of 320 nm to 750 nm.

7. Apparatus as claimed in claim 1 , wherein the radiation sensor is sensitive in a wavelength range of the first radiation emitted by the radiation source.

8. Apparatus as claimed in claim 1 , wherein at least one of the radiation sensors is an image sensor, by means of which at least one picture of the object can be taken.

9. Apparatus as claimed in claim 1 , wherein one radiation sensor is centrally located, and a plurality of other radiation sensors are provided that are arranged in spaced apart relationship in at least one position comprising the same plane and at angles relative to the one radiation sensor.

10. Apparatus as claimed in claim 1 , wherein the apparatus comprises an output device for outputting perceptible information.

11. Apparatus as claimed in claim 10 , wherein the perceptible information is based on at least one measured value from at least one radiation sensor, the measured value indicating the intensity of the second radiation or being compared to at least one reference value.

12. Apparatus as claimed in claim 10 , wherein the output device is embodied as a display that is arranged on the apparatus, and/or the output device outputs the information in a visual and/or sensible manner.

13. Apparatus as claimed in claim 1 , wherein the apparatus determines the distance to the reflection surface from the second radiation.

14. Method for curing a dental object by means of an apparatus for light-curing, the method being comprising:
irradiating the dental object with a radiation source which is positioned on one end of a housing of the apparatus;
measuring the reflected radiation by means of at least one reflected sensor;
comparing the measured radiation to first and second reference values;
detecting a relative position of the radiation source with respect to the dental object based on the measured reflected light; and
controlling the amount of radiation that is radiated from the at least one radiation source,
wherein if the first reference value is met or exceeded, an output signal immediately signals that the radiation source is situated at an optimum position with respect to the dental object, and
wherein if the amount of measured radiation is below the first reference value or above the second reference value, a warning is generated.

Assignees

• Ivoclar Vivadent Ag

Inventors

• Senn Bruno
• Plank Wolfgang
• Rohner Gottfried

Classifications

• A61B1/24

  for the mouth, i.e. stomatoscopes, e.g. with tongue depressors; Instruments for opening or keeping open the mouth · CPC title

• G01J2001/4252

  for testing LED's · CPC title

• A61C19/004 Primary

  Hand-held apparatus, e.g. guns · CPC title

• G01J1/4228

  arrangements with two or more detectors, e.g. for sensitivity compensation · CPC title

• G01N2201/062

  LED's · CPC title