JP2006055544A - Dental small brush - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an excellent dental small brush which makes it difficult for a photopolymerizable resin composition remaining on an end and bundle of the brush to polymerize even if the photopolymerizable resin composition is left on the end and bundle of the brush as it sticks thereon, and which needs nearly no dissolution and removal of the cured resin on the end and bundle of the brush by using a commercial organic solvent-based brush cleaner consisting mainly of chloroform, acetone or the like. <P>SOLUTION: In the dental small brush, a brush portion is dyed yellow, and the photopolymerizable resin composition remaining on the end and bundle of the brush is hard to polymerize. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a dental brush used when using a photopolymerizable resin composition used in dentistry.

  Currently, in dental treatment, dental polymerizable resin compositions such as denture base resins and composite resins are widely used because of their excellent operability, aesthetics and strength. In particular, the photopolymerizable resin composition that is polymerized by visible light is capable of polymerizing the photopolymerizable resin composition safely with respect to the living body, and is also operable and hardened so that it can be cured at any timing. It is most widely used in the dental treatment field because of its high strength (see, for example, Patent Document 1).

  The photopolymerizable resin composition contains a polymerizable monomer and a photopolymerization initiator, and when irradiated with light, the photopolymerization initiator absorbs light and activates to generate substances such as radical molecules and hydrogen ions. The monomer polymerization reaction is initiated. As a photopolymerization initiator contained in a photopolymerizable resin composition used in dentistry, a substance sensitive to visible light having a light wavelength range of 400 nm to 520 nm such as camphorquinone is mainly used.

  Photopolymerization resin compositions used in dentistry include pastes such as hard resin opaque materials, and liquids such as air barrier materials and surface lubricants, which are applied to dental prostheses. A brush may be used when applying to (for example, refer nonpatent literature 1). At this time, simply wiping the photopolymerizable resin composition from the used brush with a cloth or the like, the photopolymerizable resin composition remains inside the brush hair, so leave it under ambient light. As a result, the photopolymerizable resin composition is cured and the hair ends and the hair bundles are fixed, which makes it very difficult to handle the next time the brush is used. Further, when the amount remaining in the brush is large or the polymerization proceeds after being left for a long time, it was very difficult to remove from the brush.

  Therefore, a method of dissolving and removing the resin cured in the hair tips and hair bundles using chloroform, acetone or the like or a commercially available organic solvent brush cleaner mainly containing them has been performed. However, strong organic solvents are not only bad for the environment and human body, but if they are used, the adhesive that fixes the hair bundle to the handle of the brush will be dissolved, and the hair bundle will fall off the brush handle and be reused. There was also a risk that it would be impossible.

JP 48-49875 A Akifumi Tsubota, 4 others, “A front-dressing prosthetic device using“ Eyesight ””, Japan Dental Review, separate volume 2003, p.95-98

  The present invention is a dental small brush that is difficult to polymerize the photopolymerizable resin composition remaining on the hair tip or hair bundle even if the photopolymerizable resin composition is left on the hair tip or hair bundle of the brush. Therefore, an object of the present invention is to provide an excellent dental brush with little need for using an organic solvent.

  As a result of intensive studies to solve the above-mentioned problems, the present inventors have absorbed the light of 400 nm to 520 nm, which is an excitation light wavelength region such as camphorquinone, which is a photopolymerization initiator, into the hair of the brush. And the present invention was completed.

  That is, the present invention is a dental small brush characterized in that the hair part is colored yellow and the photopolymerizable resin composition remaining on the hair tips and hair bundles is difficult to polymerize.

  Since the dental brush according to the present invention has a yellow hair tip, light having a wavelength of 400 nm to 520 nm which is an excitation light wavelength region such as camphorquinone which is a photopolymerization initiator contained in a photopolymerization type resin composition used in dentistry. The photopolymerizable resin composition remaining on the hair tips and hair bundles is hard to be cured, and even if the photopolymerizable resin composition remains attached to the brush tips and hair bundles, It is unlikely that the photopolymerizable resin composition of the tip or hair bundle will be polymerized and fixed. Therefore, a normal feeling of use can be maintained at the next use.

  The material and shape of the hair part of the dental brush according to the present invention are not particularly limited as long as they are usually used in dentistry. For example, as the hair material, various animal hairs or chemically synthetic fibers such as nylon, polybutylene terephthalate, and polypropylene can be used. In the present invention, if the material of the hair portion is light-impermeable, it is difficult for light to enter the inside of the hair bundle, so that a higher effect can be expected. In addition, since there is an effect of absorbing light having a wavelength of 400 nm to 520 nm which is an excitation light wavelength region, the effect can be sufficiently obtained even if the material of the hair portion is transparent.

  The yellow color of the hair in the present invention is selected in order to give the brush hair the effect of absorbing light having a wavelength of 400 nm to 520 nm, which is an excitation light wavelength region such as camphorquinone which is a photopolymerization initiator. This color is complementary to the so-called blue color having a wavelength of 400 nm to 520 nm. Accordingly, the details are not particularly limited as long as the yellow color has an effect of absorbing light having a wavelength of 400 nm to 520 nm.

  As a means for coloring the hair of the dental brush according to the present invention to yellow, a method using chemically synthesized hair kneaded with a yellow pigment, a method of dyeing with a yellow dye, or the like can be used freely. At this time, it is necessary that the discoloration or decoloration does not occur by reacting with the photopolymerizable resin composition, and that the physical properties of the photopolymerizable resin composition itself are not affected.

Claims (1)

  A dental small brush characterized in that the hair part is colored yellow and the photopolymerizable resin composition remaining on a hair tip or a hair bundle is difficult to polymerize.