JP3057036B2 - Dental antimicrobial impression tray - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a dental impression tray made of antibacterial stainless steel.

[0002]

2. Description of the Related Art An impression tray used for forming a tooth form such as dentures in dental treatment is sufficiently sterilized by an ultraviolet germicidal lamp or the like because it is mounted in a patient's mouth and does not generate bacteria, germs and the like. It is used in such a state that it is stored. However, if the storage state is poor, germs and the like may be generated, which is not preferable from the viewpoint of hygiene.

[0003] In addition, since the impression tray is taken out of the patient's mouth, it is considered that many germs and the like in the mouth are adhered to the tray, so that a dentist, a nurse, a dental technician, etc. may come into contact therewith. Therefore, there is a high risk of illness caused by various bacteria. Therefore, the storage and management of impression trays in a hygienic manner requires too much care.

Incidentally, hygiene management of impression trays has been a particular point of care in the past, but in view of the fact that it is directly mounted in the oral cavity as described above, it is even more than sufficient. We need to improve. For example,
Even if a sterilization treatment using an ultraviolet germicidal lamp is adopted, there is a possibility that a portion that is shaded by ultraviolet light may not be sufficiently sterilized. In addition, the impression tray is instrumented when removing the tooth shape or the remnants left from the impression material, and the outer surface of the impression tray has fine scratches, and germs and the like propagate in the scratches. There is also a risk.

[0005] In view of such a background, the present invention focuses on improving hygiene by using a material having an antibacterial action as the material of the impression tray itself.

In recent years, stainless steel coated with a resin containing an antibacterial agent and stainless steel plated with a plating material containing an antibacterial agent have appeared (JP-A-5-228202, JP-A-6-10191). Gazette). However, any of these, if the surface is worn or damaged during use, the antibacterial agent is lost and the antibacterial action is reduced or disappears, so it is exposed to the outside and it is exposed to instruments such as forceps. Impression trays, which often have the chance to tear or otherwise scratch the surface, are not made of these stainless steels. Rather, actual Kaihei 2-400
As shown in Japanese Patent No. 46, it has been used for a portion that is not exposed to the outside, such as the inner surface of a toothpaste tube.

On the other hand, registered utility model publication No. 3005019
As described in the above issue, stainless steel has been developed that focuses on the bactericidal properties of Cu, but since the Cu concentration is uniformly contained, increasing the Cu-containing concentration in an attempt to increase the bactericidal effect will result in deformation due to heat. However, there remains a problem in mechanical strength, such as the production of a dental impression tray, even with this material.

[0008] In recent years, stainless steel which has an increased antibacterial property without increasing the Cu concentration and without decreasing the mechanical strength has been disclosed in Japanese Patent Application Laid-Open No. Hei 8-6.
No. 0302 is introduced. Since the present invention is described in detail in the above-mentioned publication, a detailed description thereof will be omitted here, but the outline is focused on the fact that copper contained in stainless steel has an antibacterial effect when ionized, and contains Cu. It is obtained by subjecting stainless steel to alternating electrolytic treatment to increase the Cu concentration in the surface layer. If even a small amount of water is present on the surface of such stainless steel, a very small amount of Cu is ionized, and the ionized Cu reacts efficiently with thiols in cell respiration and metabolic enzymes to inactivate thiols. Is considered to exhibit antibacterial properties.

Incidentally, in the above-mentioned Japanese Patent Application Laid-Open No. Hei 8-60302, a medical machine is disclosed as a use thereof, but the structure thereof is not disclosed at all.

[0010]

DISCLOSURE OF THE INVENTION A dental impression tray is mounted in the oral cavity and may have a large number of germs attached thereto. In addition, the outer surface of the tray is scratched by an instrument, and the inside of the tray is damaged. Although there is a risk that germs and the like may propagate, for the hygiene management of the dental impression tray which has such a special problem in terms of hygiene management, the impression tray itself has antibacterial properties and the conventional ultraviolet germicidal lamp is used. It is an object of the present invention to provide a means for improving the sterilizing effect of the present invention.

[0011]

According to the present invention, there is provided a cabinet with an ultraviolet germicidal lamp, which is formed from a Cu-containing stainless steel having a high-concentration Cu-containing region in a surface layer and has an enhanced antibacterial property. In a dental antimicrobial impression tray mounted and sterilized for use, the surface of the Cu-containing stainless steel is formed on a reflective surface capable of positively reflecting ultraviolet light, When the antibacterial impression tray is mounted in a cabinet with a germicidal lamp, the portion of the antibacterial impression tray that is shaded with respect to ultraviolet light is positively irradiated with reflected light of ultraviolet light from the reflection surface. Another object of the present invention is to provide a dental antibacterial impression tray having a sterilizable structure.

[0012]

Embodiments of the present invention will be described with reference to the drawings together with embodiments. There are various types of dental antibacterial impression trays depending on the application. For example, there are upper jaw, lower jaw, local use, etc. according to the impression collection position, other toothed jaw, edentulous, denture, etc. according to the impression collection target purpose, and agar according to the impression material. There are impression trays, silicone trays, etc., and the tray structure for antibacterial impressions includes ordinary trays with no holes, perforated trays, mesh trays, etc., and a combination of these trays for the upper and lower teeth. (No) For teeth and lower jaw. The invention applies to all such types of dental antimicrobial impression trays.

FIG. 1 is a view showing a normal type antibacterial impression tray 1 for an upper jaw. The antibacterial impression tray 1 is provided with a handle 3 integrally or welded to the antibacterial impression tray body 2.

FIG. 2 shows a perforated antibacterial impression tray 4 for the upper jaw. The antibacterial impression tray 4 is also provided with a handle 6 integrally or welded to the antibacterial impression tray body 5 and has a number of small holes 7 formed therein.

The dental antibacterial impression tray of the present invention is formed by pressing stainless steel having high antibacterial properties. The stainless steel having a high antibacterial property is disclosed in JP-A-8-60302.
Since it is described in the official gazette, detailed description is omitted,
The antibacterial property is enhanced by forming a high-concentration region of Cu in the surface layer of the surface of stainless steel containing Cu, and the mechanism of the antibacterial action is based on the slight moisture on the surface of the stainless steel. It is considered that a very small amount of Cu in the region is ionized, and this ionized Cu efficiently reacts with thiols in cell respiration and metabolic enzymes, and exhibits antibacterial properties by inactivating thiols.

The antimicrobial impression trays 1 and 4 of the present invention are formed from a material having such a highly antibacterial stainless steel surface that is positively made a reflective surface by processing the surface. That is, the reflective surface is formed by polishing the surface of the stainless steel with a buff or the like, or by plating the material so thin that the antibacterial action of the stainless steel due to the high concentration of Cu does not disappear. In the case of the Cu plating finish, the antibacterial action of the stainless steel itself does not disappear as in the above-mentioned conventional example even if a part of the plating is peeled off due to scratches.

The operation of the present invention having the above configuration will be described. An impression material is attached to the antimicrobial impression trays 1 and 4, and the impression is taken of the tooth profile to be molded by mounting in the patient's mouth. Remove using instrument. Thereafter, the impression material remaining on the antibacterial impression trays 1 and 4 is appropriately scraped off with an instrument or the like, washed with water, etc., disinfected with hot water or steam sterilized, and then with a cabinet with an ultraviolet germicidal lamp. Sterilize inside and store. FIG.
The antibacterial impression trays 1 and 4 are shown suspended and suspended on a hanging rod 9 in a cabinet 8 with an ultraviolet germicidal lamp.
And sterilized.

In general, the antimicrobial impression trays 1 and 4 have a complicated shape including many irregularities as shown in FIG. 1, and particularly, in the case of the perforated antimicrobial impression tray 4, many small holes 7 are formed. It is difficult to wash sufficiently after use, and germs and the like are likely to remain. In addition, when the impression material and its remnants are removed using an instrument after removing the tooth mold with the impression material, the surface of the impression tray may be damaged, and fine depressions may be formed. Bacteria and the like infiltrate into the inside, which is not preferable for hygiene. However, the antibacterial impression tray for dental use of the present invention can solve the above-mentioned problems of the conventional antibacterial impression tray because the antibacterial impression tray itself is formed of a material having high antibacterial properties.

Further, as shown in FIG.
When mounted in the cabinet 8 with an ultraviolet sterilizing lamp and sterilized, the part of the antimicrobial impression trays 1 and 4 that is directly irradiated with ultraviolet light is sufficiently sterilized. Sterilization becomes insufficient because the portion that is shaded by ultraviolet light is not directly irradiated with ultraviolet light. In particular, as described above, the antimicrobial impression trays 1 and 4 tend to have slightly more shaded portions due to their complicated shapes.

However, since the antibacterial impression trays 1 and 4 of the present invention are formed of stainless steel having a high antibacterial property, the material itself can be used not only on the surface but also within a fine scratch on the surface or in a portion that is shaded by ultraviolet light. Due to the antibacterial action of, the propagation of various bacteria and the like is suppressed. FIG. 4 shows antibacterial impression trays 1 and 4 mounted in a cabinet 8 with an ultraviolet germicidal lamp,
This shows a state in which ultraviolet light is irradiated and sterilized. Since the surfaces of the antimicrobial impression trays 1 and 4 are polished and formed on the reflection surface, the part 11 directly irradiated by the direct light D of the ultraviolet light is sufficiently irradiated and sterilized. The shaded portion 12 of the trays 1 and 4 is efficiently sterilized by the irradiation of the reflected light R of the ultraviolet light.

Even when the surface of the Cu-containing stainless steel is polished, only the surface of the surface layer is polished, so that the antibacterial property due to the high concentration of Cu is formed without any hindrance to the reflection surface. . Further, the reflecting surface may be formed by applying a plating or reflecting film which is thin enough to allow Cu to be ionized and eluted, or which has many fine holes and is hardly scratched.

[0022]

The dental antimicrobial impression tray according to the present invention comprises:
Since the surface layer of the stainless steel containing Cu is formed of stainless steel with high antibacterial properties having a high concentration region of Cu on the surface layer, first, the antibacterial action of the material itself causes the surface of the tray for antibacterial impression, Sterilization and propagation of various germs and the like adhered to depressions and minute surface scratches can be suppressed.

The stainless steel surface has a high antibacterial property while maintaining a high antibacterial property, and is positively used as a reflective surface. When mounted in a cabinet with an ultraviolet germicidal lamp, the antibacterial impression tray is directly irradiated with ultraviolet light. In addition, the ultraviolet light reflected by the polished antibacterial impression tray also irradiates the shaded area, sterilizing it, and has a large effect of suppressing the growth of various bacteria.

Thus, the synergistic effect in antibacterial and sterilization by forming the impression tray itself from stainless steel having high antibacterial properties and forming its surface on a reflective surface is extremely large.

[Brief description of the drawings]

FIG. 1 is an overall perspective view of an antimicrobial impression tray of the present invention.

FIG. 2 is an overall perspective view of a perforated antimicrobial impression tray of the present invention.

FIG. 3 shows a state in which the tray for antibacterial impression of the present invention is mounted in a cabinet with an ultraviolet germicidal lamp and is killed.

FIG. 4 is a plan view showing a state in which an antimicrobial impression tray mounted in a cabinet with an ultraviolet sterilizing lamp is irradiated with ultraviolet light and sterilized.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Antimicrobial impression tray 2 Antimicrobial impression tray main body 3 Handle 4 Perforated antibacterial impression tray 8 Cabinet with ultraviolet germicidal lamp 10 Ultraviolet germicidal lamp

Claims (1)

(57) [Claims] 1. A dental antibacterial impression which is formed from a Cu-containing stainless steel having an antibacterial property having a high-concentration Cu-containing region in a surface layer, is mounted in a cabinet with an ultraviolet germicidal lamp, and is used after being sterilized. In the tray for, when the surface of the Cu-containing stainless steel is formed as a reflecting surface capable of positively reflecting ultraviolet light, and the antibacterial impression tray is mounted in the cabinet with the ultraviolet germicidal lamp. A portion of the antimicrobial impression tray, which is shaded by ultraviolet light, is positively irradiated by reflected light of ultraviolet light from the reflection surface, and is configured to be sterilizable; Impression tray.