Abstract: Provided is a linear actuator which is simple in structure, inexpensive to manufacture, in addition, has small magnetic leakage, and can provide a large inertial force without increasing the number of parts and weight.

Abstract: Provided is a linear actuator which is simple in structure, inexpensive to manufacture, in addition, has small magnetic leakage, and can provide a large inertial force without increasing the number of parts and weight.

Abstract: The object of the present invention is to provide: a test kit for an antibody titer or an antibody against a periodontal disease-causing bacterium in a blood sample, which enables the testing on a periodontal disease in patients having a wide scope of immunotypes with high accuracy and can be treated by an automated device at a high speed; a periodontal disease-causing bacterium antigen protein which can be suitably used in the kit; a method for testing an antibody titer or the presence of an antibody in a blood sample using the kit; and a kit for typing strains of Porphyromonas gingivalis.

Abstract: An object of the present invention is to provide a composition for external use comprising a polyunsaturated fatty acid having higher stability over time. The present invention provides the following composition, in which the stability over time of a polyunsaturated fatty acid is high. A composition comprising a component (A) and a component (B) shown below, the component (B) being dispersed in a continuous phase that contains the component (A): (A) at least one member selected from the group consisting of tocopherol and phytic acid; and (B) liposomes containing a polyunsaturated fatty acid or a derivative thereof.

Abstract: [Problem] To provide: a bactericidal agent composition which can exhibit an excellent bactericidal effect in the presence of an organic substance and against biofilms; a method for producing the bactericidal agent composition; and a sterilization method using the bactericidal agent composition. [Solution] A bactericidal agent composition which comprises water containing ultrafine bubbles having a most frequent particle diameter of 500 nm or less and a bactericidal component. Preferably, the density of most frequent particles of the ultrafine bubbles are 10,000 particles or more and the density of ultrafine bubbles each having a particle diameter of 1000 nm or less is 1,000,000 particles or more.

Abstract: Provided is an interdental brush having a wire and filaments arranged therein by folding the wire and disposing the filaments between the wire and then twisting the wire. The interdental brush has improved filament retention and improved cleaning effectivity and reachability to minute portions. Each of filaments 3 has a polygonal cross section whose at least one corner portion has an interior angle 31 as acute as 30 to 75 degrees. Specifically, an angle ?3 of the acute corner portion 31 is set at 1.2 to 3 times a twisting angle ?4 of the wire. The filaments each have two or more such acute corner portions, and two or more rows of such filaments are disposed and laminated between the wire in a densely arranged manner.

Abstract: An oral composition includes high stain removal efficiency relative to its abrasive ability. The oral composition contains fused silica and a dental abrasive. The oral composition has a high stain removal ability relative to the abrasive ability thereof. In other words, the ratio (stain removal ability/abrasive ability) of the oral composition is high. Accordingly, the use of the oral composition makes it possible to efficiently remove stains without damaging the teeth more than necessary.

Abstract: An oral composition includes high stain removal efficiency relative to its abrasive ability. The oral composition contains fused silica and a dental abrasive. The oral composition has a high stain removal ability relative to the abrasive ability thereof. In other words, the ratio (stain removal ability/abrasive ability) of the oral composition is high. Accordingly, the use of the oral composition makes it possible to efficiently remove stains without damaging the teeth more than necessary.

Abstract: Provided is a core/sheath composite filament for toothbrushes which exhibits excellent hardness, durability and feeling of use when used in toothbrushes, is less prone to falling out when tufted into the tufting plate, and makes it possible to improve stain-removal properties. Also provided is a toothbrush using said core/sheath composite filament. A toothbrush is configured using bundles of bristles configured from core/sheath composite filaments that have a quadrangular cross section in the plane perpendicular to the lengthwise direction and comprise a core (2), which is formed from a synthetic resin fiber, and a sheath (3), which integrally covers the core (2) and is formed from an elastomer that is compatible with the synthetic resin constituting the core (2). Tufts configured from a plurality of the core/sheath composite filaments (1) are tufted in the center portion of a tufting plate.

Abstract: The present invention was made in view of an object to produce a novel proteoglycan-containing material, and find a novel use and/or a superior effect of the proteoglycan-containing material. The present invention provides a proteoglycan-containing material obtained from fish cartilage, wherein the proteoglycan-containing material comprises an acidic saccharide component having a molecular weight of not less than 2000 kDa. The proteoglycan-containing material provides advantageous effects for skin-moisturizing and skin anti-aging, including a superior skin fibroblast proliferation effect, an effect of enhancing and improving the skin barrier function, an effect of enhancing and improving the skin's capability to produce collagen, a dermis-thickening inhibition effect, and the like.

Abstract: An object of the present invention is to provide a bone regeneration material suitable for bone (in particular, alveolar bone) regeneration. The present invention provides a non-woven fabric containing a bone prosthetic material wherein the bone prosthetic material is included between biocompatible fibers that constitute the non-woven fabric. The non-woven fabric may be suitably used as a bone regeneration material (in particular, a dental bone regeneration material).

Abstract: An object of the present invention is to provide a tryptanthrin-containing indigo-plant leaf extract particularly suitable for application to the skin. The present invention provides a method for producing a tryptanthrin-containing indigo-plant leaf extract, the method comprising filtering a mixture of a concentrated ethanol extract of indigo-plant leaves and a polyhydric alcohol, and collecting the filtrate. The present invention further provides an indigo-plant leaf extract produced by this method.

Abstract: An object of the present invention is to obtain a useful extract from aquatic animal tissues. The present invention provides a fish cartilage water extract containing a proteoglycan having a molecular weight of not less than 2,500,000 (250×104). The extract has a superior skin anti-aging effect (in particular, anti-inflammatory effect, skin barrier functionality improving effect, and skin water-retention ability improving effect). Moreover, the fish cartilage water extract of the present invention provides these effects not only through application to skin but also through oral administration.

Abstract: An object of the present invention is to provide a composition for external use comprising a polyunsaturated fatty acid having higher stability over time. The present invention provides the following composition, in which the stability over time of a polyunsaturated fatty acid is high. A composition comprising a component (A) and a component (B) shown below, the component (B) being dispersed in a continuous phase that contains the component (A): (A) at least one member selected from the group consisting of tocopherol and phytic acid; and (B) liposomes containing a polyunsaturated fatty acid or a derivative thereof.

Abstract: This invention relates to a composition that stably contains hesperidin. The present invention provides a composition containing (A) hesperidin, (B) at least one dihydric alcohol selected from the group consisting of ethylene glycol, diethylene glycol, triethylene glycol, polyethylene glycol, propylene glycol, dipropylene glycol, 1,3-butylene glycol, and 3-methyl-1,3-butanediol, and (C) a sugar alcohol. In the composition, the decomposition of hesperidin is suppressed and hesperidin is stably contained.

Abstract: To provide an economical and sanitary drug-containing personal hygiene implement that is easy to produce and manage, and has an excellent portability even when both personal hygiene implement and drug are used away from home. The drug-containing personal hygiene implement includes a bottle body in which a drug is stored, a personal hygiene body which has a shaft section and a distal-end personal hygiene section, protrudes to a distal-end side of the bottle body, and is used to implement care of a human body, and a passage provided on a distal-end section of the bottle body and guiding the stored drug to the personal hygiene body, the implement being characterized in that opening operation makes it possible for the drug to flow through the passage in the bottle body.

Abstract: A toothbrush including a brush main body of a synthetic resin and having a bristle base and bristles of a thermoplastic resin which have been fusion-bonded to the bristle base to constitute a bristled part, the bristles constituting the bristled part at least partly comprise: tapered bristles which are bristles having split free ends, the split free ends having been tapered beforehand; tapered bristles which have a sectional shape having a core-sheath structure or islands in a sea structure; or tapered bristles in each of which a core bristle comprising a core or island part has been formed beforehand so as to be exposed at the free end. The toothbrush has excellent suitability for bristle insertion into narrow parts. It is highly effective in removing dental plaque and cleaning the teeth. It is highly easy to use in the oral cavity. It further has a highly attractive appearance.

Abstract: An oral composition includes high stain removal efficiency relative to its abrasive ability. The oral composition contains fused silica and a dental abrasive. The oral composition has a high stain removal ability relative to the abrasive ability thereof. In other words, the ratio (stain removal ability/abrasive ability) of the oral composition is high. Accordingly, the use of the oral composition makes it possible to efficiently remove stains without damaging the teeth more than necessary.

Abstract: A toothbrush including a brush main body of a synthetic resin and having a bristle base and bristles of a thermoplastic resin which have been fusion-bonded to the bristle base to constitute a bristled part, the bristles constituting the bristled part at least partly comprise: tapered bristles which are bristles having split free ends, the split free ends having been tapered beforehand; tapered bristles which have a sectional shape having a core-sheath structure or islands in a sea structure; or tapered bristles in each of which a core bristle comprising a core or island part has been formed beforehand so as to be exposed at the free end. The toothbrush has excellent suitability for bristle insertion into narrow parts. It is highly effective in removing dental plaque and cleaning the teeth. It is highly easy to use in the oral cavity. It further has a highly attractive appearance.

Abstract: Disclosed is an oral care instrument which can maintain a sufficient support strength of a long neck, leaves little residue of a medicant after using, has a low contamination risk from nozzle tip, allows smooth spouting of a medical solution from the beginning, prevents excessive supply of a gelatinous or creamy oral-care composition in the case of flowing the composition in a supply channel inside the same, and contributes to the maintenance of the durability of a manufacturing mold. In the aforesaid oral care instrument which comprises a handle (2), a head (3) and a neck (4), a channel (11) for supplying oral-care composition running within the neck (4) to a nozzle (10) of the head (3) via the handle (2) is formed and the head (3) is connected in a detachable manner to the neck (4).