JP2003034630A - Cleaning system for dental prosthesis - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a cleaning system for dental prosthesis system. SOLUTION: The cleaning system for dental prosthesis system is characterized by that entering a dental prosthesis into a solution containing photocatalyst and a light emitted from a light emitting part is emitted. The light emitted from the light emitting part is characterized by that, at the light emitting part, wavelength is 200-800 nm, the light against the light having above wavelength of which wavelength is 70% or less, and energy of 380 nm or less is 10 mW/cm<2> or more.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a dental prosthesis cleaning system, and more particularly, it is contaminated by tobacco tar, food and drink such as coffee and curry, tartar, etc. A system for cleaning dental prostheses mainly used in the oral cavity, such as dentures, and dental instruments. In particular, a cleaning object is put in a solution consisting of a photocatalyst such as titanium dioxide and a phosphate, and light is applied to this. The present invention relates to a dental cleaning device having a light irradiation function for cleaning and removing dirt, odor, etc. by irradiating the surface with a photocatalyst.

[0002]

[Prior Art] With the aging of society, the life expectancy is prolonging, but with the decrease in tooth loss rate not being able to keep up with it, there is an increasing demand for cleaning agents for dental prostheses such as dentures. Is expected to expand. In particular, the odor of the mouth and stains on the dentures due to the use of dentures are indispensable for the elderly to live with confidence, and there is a strong need for the development of cleaning agents with excellent cleaning effects and high safety. It is said that. By the way, as a cause of contamination of the dental prosthesis, stains and odors caused by cigarettes and foods, tartar and mucin, stains caused by microorganisms, and stains caused by color are particularly mentioned.

The following methods are available as means for removing the stains on the dental prosthesis. 1) Mechanical cleaning The mechanical cleaning with a brush is a basic method for removing dirt, and for example, a denture brush or a clasp cleaning brush is used. However, the cleaning method using a brush is liable to cause excessive wear on a denture base or the like, so that consideration must be taken. Generally, a brush with long bristles is prone to wear, but it can be prevented by performing an appropriate brushing operation. In general, plaque removal is incomplete with patient-only toothbrush cleaning. In particular, microorganisms invade the resin and the tissue conditioner. Mechanical cleaning with a brush alone is not sufficient for removing these substances.

2) Ultrasonic cleaning As an ultrasonic cleaning device, a portable type is commercially available, but like the mechanical cleaning with a brush,
This alone is not sufficient for the cleaning effect, and in fact, microorganisms are detected even after cleaning. Therefore, in the case of ultrasonic cleaning, combined use with chemical cleaning is required.

3) Chemical cleaning As a component of the chemical cleaning agent, for example, peroxide, hypozinc acid, acid, enzyme, disinfectant and the like are used. this house,
Peroxides are the most widely used. This For peroxide, as a foaming mechanism, those of alkaline which generates oxygen gas _{below; H 2 O 2 + OCl ---} O 2 + H 2 O + Cl - In addition, in neutral pH to generate carbon dioxide gas below ^{_{; NaHCO 3 + H + --- CO}} 2 + H 2 O + Na + and the like. Of these, the alkaline ones are effective for coloring stains, but have a harmful effect on the denture material, while the neutral ones are effective for juvenile plaques, but for stains stains. has no effect. There are many commercial products of this type.

Next, regarding hypochlorous acid, as its foaming mechanism, an alkaline one which generates oxygen gas by the following: OCl ⁻ + H ₂ O ₂ −−− O ₂ + H ₂ O + Cl ⁻ those weak neutral for ^{_{generating; NaHCO 3 + H + --- CO}} 2 + H 2 O + Na + and the like. These remove the coloring, dissolve mucin and organic substances, and have a bactericidal effect against bacteria and fungi. However, their use can lead to metal corrosion and resin bleaching.

Next, hydrochloric acid, phosphoric acid, etc. are used as the acid. These are very effective in coloring and removing tartar. However, their use causes metal corrosion.

Next, as the enzyme, for example, digestive enzymes such as protease, amylase and lipase, mutanase having antibacterial and antiplaque action, dextranase, β-1,3 glucanase and lysozyme are mixed. Although these do not have a great cleaning action, they are less harmful to the denture material and are suitable for tissue conditioners.

Secondly, disinfectants are also used, which are not generally available. Although this has a bactericidal effect, there is also a problem of harm due to remaining dead bacteria. Generally, synthetic surfactants and bleaching agents have the property of irritating the skin and mucous membranes, and when cleaning of the denture is insufficient, their use stimulates the tongue and mucous membranes in the oral cavity, resulting in damage such as taste disorders. There is also a possibility of causing. As described above, various cleaning methods or cleaning agents have been conventionally used, but in general, the conventional cleaning agents may have insufficient removal of dirt, tartar, bacteria, etc. There is a possibility of causing injury such as allergies by continuing to use the cleaning agent for a long period of time, and there has been a strong demand in the art for the development of a new cleaning technology that does not have these problems.

[0010]

Under the circumstances, the present inventor, in view of the above-mentioned prior art, has a new cleaning for a dental prosthesis capable of reliably solving the above-mentioned problems of the prior art. As a result of intensive research aimed at developing technology, as a light for irradiation in a dental cleaning system using a specific cleaning solution having a photocatalytic action,
The inventors have found that the intended purpose can be achieved by using light that combines visible light and ultraviolet light in a specific wavelength range, and have completed the present invention. The present invention reliably removes dirt and odor when cleaning a dental prosthesis with a cleaning material that uses titanium dioxide coated with titanium dioxide and / or apatite, phosphoric acid, sodium pyrophosphate, etc. It is an object of the present invention to provide a cleaning material for a dental prosthesis that does not damage the dental prosthesis. Further, the present invention is a cleaning system for a dental prosthesis, which enables cleaning using a irradiator having an irradiation function of light in a specific wavelength range in cleaning a dental prosthesis such as dentures using a photocatalyst. It is intended to provide.

[0011]

The present invention for solving the above-mentioned problems comprises the following technical means. (1) A dental prosthesis cleaning system in which a dental prosthesis is placed in a solution containing a photocatalyst and the light emitted from the light irradiation unit is irradiated, and the light emitted from the light irradiation unit is the light emission unit. And the wavelength is 200-800 nm, the light having the wavelength of 430-800 nm is 70% or less, and the energy of 380 nm or less is 10 mW / cm ^2.
The above is the dental prosthesis cleaning system characterized by the above. (2) The cleaning system according to (1) above, which uses a solution containing titanium dioxide as a photocatalyst and phosphate. (3) It has a container part and an irradiation part, and the container part has a structure in which the light of the light irradiation does not leak to the outside, and the operation of the irradiation switch is controlled by opening and closing the lid of the container part upper opening. The cleaning system according to (1) above.

[0012]

BEST MODE FOR CARRYING OUT THE INVENTION Next, the present invention will be described in more detail. The present invention relates to a dental prosthesis cleaning system including a combination of an irradiation instrument having a light irradiation section having a function of irradiating visible light of violet light and / or of ultraviolet light. In the present invention, examples of the article to be cleaned include, but are not limited to, dental prostheses and dental instruments. According to the present invention, in the cleaning system, the light emitted from the light irradiation unit has a wavelength of 20
0-800 nm, 70% or less of the light having the wavelength of 430-800 nm with respect to the light of the above wavelength, 38
It is important that the energy of 0 nm or less is 10 mW / cm ² or more. The cleaning system of the present invention has a container part for containing a cleaning agent, an irradiation part having a light irradiation function, and further has a light source, a filter, an operating means, etc., but the light source, the filter, the operating means, etc. may be appropriate. , Is not particularly limited. The condition of light in the light emitting part of the device of the present invention is that the dental prosthesis is immersed in a container part containing a cleaning material containing titanium dioxide coated with titanium dioxide and / or apatite, The dental prosthesis cleaning device having the function of irradiating the light emitted from the light source is set to have a cleaning ability in about 20 minutes to 10 hours.

That is, the condition is that the cleaning material solution containing titanium dioxide and / or titanium dioxide coated with apatite has a good cleaning action in the wavelength region of 380 nm or less, and the irradiation energy is 10 mW.
If it is less than / cm ² , the energy becomes small and the cleaning takes a very long time, and if it is more than 10 cm, the cleaning effect can be expected within 10 hours. Here, the energy having a wavelength of 380 nm or less has a good cleaning action.
It can be said that when activated by receiving energy of 0 nm or less, active oxygen is generated, and this active oxygen decomposes organic substances.

Further, the irradiation energy of light having a wavelength of 430-800 nm is:
It must be 70% or less. This condition is determined in consideration of reducing the proportion of light of 430 nm or more that causes heat generation. It is not preferable for the resin to have a temperature of 60 ° C. or higher, and deformation or discoloration may occur. In the present invention, titanium dioxide and /
Alternatively, a cleaning material solution composed of titanium dioxide coated with apatite is used, and its preferable composition is a solution composed of titanium dioxide as a photocatalyst and phosphate, titanium dioxide and phosphate coated with apatite, and titanium dioxide powder. Examples of the solution include granules and an acid such as phosphoric acid or pyrophosphoric acid. In this case, as the titanium dioxide coated with titanium dioxide and / or apatite, fine particles having a particle size of 1 μm to 10 μm or a sol, and mainly anatase type are exemplified.
Since fine particles and sol-like particles have good dispersibility, particles are unlikely to settle during cleaning, the probability of titanium dioxide encountering dental prostheses is high, and cleaning effects can be expected. The amount ratio of this component is 0.01-10% for titanium dioxide coated with titanium dioxide and / or apatite, and 1-50 for phosphoric acid.
% And pyrophosphoric acid are 30 to 50%, and these can be appropriately changed depending on the stain condition.

The object to be cleaned is dipped in the above solution and the solution is irradiated with light. The irradiation time of light is 20 minutes to 10 hours, preferably 1 hour or more, and can be appropriately adjusted depending on the degree of contamination, the size of the object to be cleaned, and the like. The irradiation direction of light can be from the upper side, the side surface, the lower side, or a plurality of directions with respect to the object to be cleaned, and is not particularly limited. The apparatus constituting the cleaning system of the present invention includes a container section for containing a cleaning material solution, an irradiation section having a function of irradiating a dental prosthesis immersed in the cleaning material solution with light in a specific wavelength range, and a light source (lamp). ), A lid part for opening and closing the upper opening of the container part, a filter for selecting a wavelength of a light source, a tray for mounting a dental prosthesis, and an operation switch. The shapes and structures of these constituent elements are not particularly limited,
Appropriate ones can be adopted. As a light source, L
ED, metal halide lamp, halogen lamp, xenon lamp, black light, fluorescent lamp, sunlight and the like are exemplified as suitable ones. Regarding the operation switch, for example, when the object to be cleaned such as dentures is put in the container section and the light is irradiated, light is not leaked to the outside, for example,
The irradiation switch can be activated when the container is covered.

[0016]

[Function] When the photocatalyst is irradiated with light, electrons and holes are generated,
This reacts with oxygen to produce active oxygen. Active oxygen is
It has a strong oxidizing power and decomposes almost all organic substances into carbon dioxide and water. This light is usually 380 nm or shorter. In the cleaning system of the present invention, the light to be radiated has a wavelength of 200 to 800 nm at the light emitting portion, and the light having a wavelength of 430 to 800 nm with respect to the above wavelength is 7
0% or less, energy of 380 nm or less is 1
Since it is 0 mW / cm ² or less, the cleaning action by the wavelength of 380 nm or less is utilized to reduce the proportion of light of 430 nm or more that causes heat generation, and 10 mW / cm ²
Controlling the cleaning time with the above irradiation energy can be realized. Apatite has a function of adsorbing substances, and is particularly excellent in adsorbing components such as bacteria, viruses, and odors. Therefore, by using titanium dioxide coated with apatite, it is possible to create a circulation in which the apatite adsorbs a substance and the titanium dioxide decomposes the substance, and a cleaning effect superior to that in the case of titanium dioxide alone is obtained.
Moreover, when titanium dioxide adheres to the object to be cleaned, it may be decomposed by exposing it to light, but if it is coated with apatite, such a problem may occur. There is no.

[0017]

EXAMPLES Next, the present invention will be specifically described based on examples, but the present invention is not limited to the examples. Example (1) Preparation of cleaning material solution A cleaning material solution having the following composition was prepared. Titanium dioxide coated with titanium dioxide and apatite (sol solution) 0.05% Phosphoric acid 1% Sodium pyrophosphate 2% Water

(2) Apparatus The apparatus used in this example is shown in FIG. The configuration of this device is such that a container part in which a dental prosthesis is put in, an irradiation part having a function of irradiating light of a light source (lamp) from a light emitting part, a filter for selecting a wavelength, a lid part, and an irradiation switch only when the lid is closed. The operation switch to start. As the light source, halogen lamp, metal halide lamp, black lamp,
LEDs were used. The wavelength was selected by the filter. (3) Cleaning method 300 ml of the cleaning material solution was put into the container part, and the false denture was immersed in this. Then, it was irradiated with light from above.

(4) Results The results are shown in Table 1. In Table 1, the unit of “energy of 380 nm or less” is mW / cm ² . "Effect" indicates the degree of cleaning effect. “Temperature of 60 ° or higher” indicates the temperature range of the object to be cleaned. Energy of 380 nm or less (unit:
Regarding mW / cm ² ), a cleaning effect was obtained at 10 mW / cm ² or more. 430-800 / 200-800nm
Regarding (unit:%), when the ratio of light of 430 to 800 nm was 80%, the temperature was 60 ° C. or higher, and the resin was slightly deformed. When these are put together, the decision is 2
430-800n for light with a wavelength of 00-800nm
When the ratio of light having a wavelength of m is 70% or less and the energy of 380 nm or more is 10 mW / cm ² or more, a good cleaning effect is obtained, while the energy of 380 nm or less is 10 mW / cm ^2.
If it is less than cm ² or the ratio of wavelengths of 430 to 800 nm is 80%, good effects cannot be obtained.

[0020]

[Table 1]

[0021]

As described above in detail, the present invention relates to a dental prosthesis cleaning system having a light irradiation section having a function of irradiating light in a specific wavelength region. The present invention has the following effects. To be done. (1) The cleaning effect of a dental prosthesis with titanium dioxide or the like can be enhanced by a simple operation. (2) A high cleaning effect can be obtained in a short time. (3) Dirt on a dental prosthesis can be completely cleaned and removed without using other cleaning means together. (4) A high cleaning effect can be obtained without damaging the dental prosthesis.

[Brief description of drawings]

FIG. 1 shows a cleaning system of the present invention.

[Explanation of symbols]

1 container section 2 irradiation part 3 lamps 4 Lid 5 Dental prosthesis 6 Cleaning material solution

Claims (3)

[Claims] 1. A dental prosthesis cleaning system in which a dental prosthesis is placed in a solution containing a photocatalyst and the light emitted from the light irradiation unit is irradiated, wherein the light emitted from the light irradiation unit is
In the light emitting portion, the light having a wavelength of 200-800 nm, and the light having a wavelength of 430-800 nm with respect to the light having the above wavelength is 7
Dental prosthesis cleaning system, which is 0% or less and energy of 380 nm or less is 10 mW / cm ² or more. 2. The cleaning system according to claim 1, wherein a solution containing titanium dioxide as a photocatalyst and phosphate is used. 3. A container part and an irradiation part, wherein the container part has a structure in which light of light irradiation does not leak outside, and the operation of the irradiation switch is controlled by opening and closing the lid of the container part upper opening. The cleaning system according to claim 1, wherein