Abstract: An object is to provide a polymerization apparatus for dental technique with which both of preliminary polymerization and final polymerization can be carried out by one apparatus. The apparatus includes a plurality of light sources whose light axes run at least in two directions; a cover that covers the light sources, forms a polymerization space inside thereof and switches a formation and closure of an opening that communicates inside and outside the polymerization space; a sensor that detects the formation and closure of the opening by the cover; a controller that receives signals from the sensor, and based on the formation and closure of the opening, turns on some of the light sources having two or more directions of light axis with the opening closed, and turns on some of the light sources having fewer directions of light axis than with the opening closed, with the opening open.

Abstract: An object is to provide a polymerization apparatus for dental technique with which both of preliminary polymerization and final polymerization can be carried out by one apparatus. The apparatus includes a plurality of light sources whose light axes run at least in two directions; a cover that covers the light sources, forms a polymerization space inside thereof and switches a formation and closure of an opening that communicates inside and outside the polymerization space; a sensor that detects the formation and closure of the opening by the cover; a controller that receives signals from the sensor, and based on the formation and closure of the opening, turns on some of the light sources having two or more directions of light axis with the opening closed, and turns on some of the light sources having fewer directions of light axis than with the opening closed, with the opening open.

Abstract: Provided is an intraoral inspection apparatus for dental use capable of distinguishing and detecting more kinds of diseased sites etc. with one apparatus. The apparatus comprises: a light source unit provided with color-producing light sources capable of inducing fluorescent lights from diseased sites; a wavelength adjusting device provided with a first filter that transmits, among the fluorescent lights, a light having a wavelength of a fluorescent light from a predetermined diseased site and blocks or attenuates a light having a wavelength other than this, and provided with a second filter that transmits, among the fluorescent lights, a light having a wavelength of a fluorescent light from a diseased site different therefrom and blocks or attenuates a light having a wavelength other than this; and an imaging device which receives the fluorescent lights transmitted through the first filter and the second filter, and converts them into electrical signals.

Abstract: A photoirradiation device in which an optical system can be miniaturized and utilization efficiency of light can be improved in a manner that includes a first lens and a second lens, which share refraction of light to convert light beams emitted from a plurality of light sources into the light beams substantially parallel to an optical axis, and a third lens focusing the light beams from the second lens on an incident surface 20A of a lightguide 20. A fiber rod which can output uniform light beams in a manner that includes a first rod having a single fiber and a second rod having a plurality of fibers.

Abstract: A photoirradiation device in which an optical system can be miniaturized and utilization efficiency of light can be improved in a manner that includes a first lens and a second lens, which share refraction of light to convert light beams emitted from a plurality of light sources into the light beams substantially parallel to an optical axis, and a third lens focusing the light beams from the second lens on an incident surface 20A of a lightguide 20. A fiber rod which can output uniform light beams in a manner that includes a first rod having a single fiber and a second rod having a plurality of fibers.

Abstract: A light irradiation apparatus for a dental photo polymerization composite resin of multi-purpose type which can efficiently and completely polymerize and cure the dental photo polymerization composite resin using a combination of the camphor quinone and the tertiary amine as the photo polymerization catalyst, and can also polymerize and cure the dental photo polymerization composite resin using the acylphosphine oxide as the newly developed photo polymerization initiator. with a structure such that there are arranged a blue ray radiation LED 5 having luminous wavelengths peaked at a wavelength of 450 nm or more but not more than 490 nm, and a near ultraviolet rays and/or violet rays radiation LED 6 having luminous wavelengths peaked at a wavelength of 370 nm or more but less than 410 nm, and there is provided a circuit changing switch 7 at least for simultaneously turning on these two kinds of LEDs 5, 6 and for turning on only the near ultraviolet rays and/or violet rays radiation LED 6.

Abstract: A light irradiation apparatus for a dental photo polymerization composite resin of multi-purpose type which can efficiently and completely polymerize and cure the dental photo polymerization composite resin using a combination of the camphor quinone and the tertiary amine as the photo polymerization catalyst, and can also polymerize and cure the dental photo polymerization composite resin using the acylphosphine oxide as the newly developed photo polymerization initiator, with a structure such that there are arranged a blue ray radiation LED 5 having luminous wavelengths peaked at a wavelength of 430 nm or more but not more than 500 nm, and a near ultraviolet rays and/or violet rays radiation LED 6 having luminous wavelengths peaked at a wavelength of 350 nm or more but less than 430 nm, and there is provided a circuit changing switch 7 at least for simultaneously turning on these two kinds of LEDs 5, 6 and for turning on only the near ultraviolet rays and/or violet rays radiation LED 6.