Abstract: The invention provides a plastic impression tray for a local area having an outer wall provided in an outer side of a curve of a bottom portion, and an inner wall provided in an inner side of the curve of the bottom portion. A rim having a particular height is provided in the bottom portion side along each of upper ends of the outer wall and the inner wall, elongated through holes each reaching the bottom portion from a portion just below the rim are formed approximately at uniform distances in the outer wall and the inner wall, circular through holes each having a particular diameter are formed at particular positions in the bottom portion, and elongated end portion side through holes each having a particular width and a particular length are provided vertically to an axial direction of the bottom portion, in both ends of the bottom portion.

Abstract: The invention provides a method of inspecting bacteria by using an outer membrane vesicle of the bacteria, which is useful for easily diagnosing a periodontopathic bacteria with high precision. An outer membrane vesicle of bacteria to be detected is previously arranged in a measuring portion of a measuring appliance, a specimen material collected from a test subject is brought into contact with the measuring portion, and an anti-outer membrane vesicle antibody corresponding to the outer membrane vesicle in the specimen material is detected on the basis of an antigen antibody reaction. A measuring appliance for executing the inspecting method of the bacteria is structured such that the outer membrane vesicle of the bacteria to be detected is previously arranged in the measuring portion.

Abstract: The invention provides a plastic impression tray for a lower jaw having an outer wall, an inner wall and a bottom portion and forming a U-shaped flat surface. A rim with a particular height is provided along each of upper ends of the outer wall and the inner wall, through holes with particular widths are provided with a particular relationship between the distance between the adjacent through holes and a width of the through hole, circular through holes with particular diameters are provided between the through holes in the bottom portion, and bottom portion through holes with particular widths and lengths are provided on a line connecting the bottom portion sides of the through holes which are positioned at the closest side to the end portion of the U-shaped portion in the end portion thereof, or in a closer side to the end portion than the line, respectively.

Abstract: A block-shaped scaffold for a tissue engineering with improved shape stability and less volume change in water is produce by the steps of approximate-uniformly mixing the particle-shaped material having 100 to 2000 ?m diameter with a solution, where a biodegradable polymer is dissolved with an organic solvent, freezing, drying it to remove the solvent, pulverizing thus obtained intermediate product, dissolving it with a liquid, where the biodegradable polymer is not dissolved, to remove the particle-shaped material taking thus obtained intermediate product into a mold, and pressing and heating it, the scaffold having ununiform and continuous holes occupying 20 to 80% in a cross-section area in a three-dimensional network structure having a small hole structure with 5 to 50 ?m diameter, elastic coefficient being 0.1 to 2.5 MPa, and volume change being 95 to 105% when dipping it in water for 24 hours.

Abstract: A keeper tray corresponding to a removable keeper is used for casting a root cap for a dental magnetic attachment having a space S, in which the keeper is inserted and adherently fixed, by a lost wax method. The keeper tray corresponding to the removable keeper is made of a synthetic resin or a metal and has the formed space S thereon. The keeper tray corresponding to the removable keeper has a shape in which an opening 2 is formed on the bottom surface 1 by cutting out from an outer peripheral portion 1 a of the bottom surface 1 to a center portion, and opens to a space S.

Abstract: A packaging container is constructed by a packaging container main body with a lid portion, and a label adhered to an upper surface of the packaging container main body. An accommodating portion main body of the packaging container main body has a first flange portion around an accommodating portion, and second flange portions positioned at right and left side ends of the first flange portion and extending in an outward direction from an upper end of each of step portions having the same height as a thickness of the lid portion. Further, an engagement concave portion engaging with an engagement portion of the lid portion is formed in a front portion in the center of the first flange portion, and the label is adhered to upper surfaces of the lid portion and the second flange portions to seal the container main body, and is unsealed by a cut line.

Abstract: Provided is a production method of a tissue regeneration material whereby a cell suspension can be seeded and cultured on a porous support having relatively large pores. The method comprises: contacting a porous body to a holding plate having a contact angle to water of 15 to 90°, the porous body being formed of a bioabsorbable polymer material, having a thickness of 2 to 100 mm, an interconnected porous structure with a pore diameter of 180 to 3500 ?m and an average pore diameter of 350 to 2000 ?m, a porosity of 60 to 95%, and a compressive strength of 0.05 to 1 MPa, and being filled with a cell suspension having a cell density of 5×106 to 1×108 cell/ml; and arranging the holding plate to be on the porous body, and keeping the porous body still, to thereby seed cells on the porous body.

Abstract: The present invention provides a system for embedding an artificial tooth root whereby holes of various depths can be bored into an alveolar bone more stably and kinds of drills and kinds of spacers to be included herein can be reduced. The system for embedding an artificial tooth root comprises: two kinds of dental drills to bore a hole into the alveolar bone which have predetermined different lengths and have a predetermined relation; and one to three kinds of spacers to be attached to the dental drills, for combinations of an artificial tooth root and a surgical guide, the artificial tooth root being selected from a group of artificial tooth roots formed of two to five kinds of artificial tooth roots, and the surgical guide being selected from a group of surgical guides formed of one to three kinds of surgical guides.

Abstract: To provide a most suitable block body for producing a denture base used when producing a denture base by cutting, the block body for producing a denture base is produced by polymerizing a (meth)acrylate monomer so as to have a color tone within a range that L* is 40 to 55, a* is 14 to 31, and b* is 5 to 20 when the color tone is measured with a sample thickness of 4 mm based on JIS Z8729, and to be preferably in a cylindrical shape having a diameter of 8 to 15 cm and a height of 1.5 to 5 cm, or in an elliptical-cylindrical shape having a major diameter and minor diameter of 8 to 15 cm and a height of 1.5 to 5 cm.

Abstract: To provide a silicone impression material having high viscosity of a kneaded material before curing and low hardness after curing. A dental silicone impression material composition includes: A) an organopolysiloxane mixture comprising a) an organopolysiloxane having at least two aliphatic unsaturated hydrocarbons in one molecule and having viscosity of 1,000,000 mPa·s or more at 25° C., and b) an organopolysiloxane having at least one aliphatic unsaturated hydrocarbon in one molecule and having viscosity of 100 to 5,000 mPa·s at 25° C., wherein a ratio of a):b) is 1:0.5 to 10; B) an organohydrogenpolysiloxane having at least three hydrogen atoms directly bonded to a silicon atom in one molecule; C) a silicone-soluble platinum compound; D) an organopolysiloxane not having a functional group; and E) an inorganic filler.

Abstract: A stopper Y is cylindrically formed in its entirety and inserted and attached from a top side of a blade Xc of a drill X having a flange Xa projecting at a shank Xb. The stopper has a through hole to be inserted by the blade Xc of the drill X and includes a drill blade entering depth regulating part Ya and a drill holding part Yb. The drill blade entering depth regulating part Ya has a height regulating a entering depth of the blade Xc of the drill X in a jawbone of the lost tooth part. The drill holding part Yb has a plurality of slits Yba formed along the axial direction of the stopper from an end opposite to the drill blade entering depth regulating part Ya, detachably engages to the flange Xa of the drill X, and holds the drill X by elasticity.

Abstract: A dental impression tray includes a tray body 1 and a handle portion 2. The tray body 1 has an engaging convex portion 1a on an anterior tooth part of the area corresponding to an alveolar crest thereof and a L-shaped handle portion 2 has an engaging portion 2a engaging with the engaging convex portion 1a on a top end thereof. The handle portion 2 can be detached at a time of bite taking for recording occlusal positions. As for embodiments of the engaging convex portion 1a and the engaging portion 2a, there are one embodiment in which the engaging convex portion 1a is a projection and the engaging portion 2a is a hole engaging with the projection, and another embodiment in which the engaging convex portion 1a is a dovetail projection and the engaging portion 2a is a dovetail groove engaging with the dovetail projection by sliding.

Abstract: A method for creating three-dimensional data of a position of an outer periphery at the occlusal surface side of a keeper includes steps of placing a keeper analog having a reference plane in same shape as and in parallel to a surface at the occlusal surface side of a keeper to be embedded projectingly on an abutment model, three-dimensionally measuring an outside shape of the abutment model having the keeper analog, acquiring a normal vector and an outer periphery of the reference plane based on the measured three-dimensional data, moving the outer periphery to a position at the abutment model side by a height of the keeper analog from the reference plane along the normal vector and acquiring three-dimensional data of the outer periphery based on the position.

Abstract: The present invention provides an occlusal pressure measuring device which makes it possible to capture the positional relation between measurement results of the occlusal pressure and the tooth row more easily and more precisely. The occlusal pressure measuring device 1 comprises: a sensor portion 10 capable of measuring occlusal pressure; and a body 20 which transmits information obtained from the sensor portion, wherein the sensor portion is a laminate of a plurality of layers; at least one of the plurality of layers is a pressure sensitive layer capable of detecting occlusal pressure; and the outermost layer of the sensor portion is a shape transfer layer which can be deformed by the occlusal pressure and can retain the deformation even when the occlusal pressure is removed.

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: To provide a dual curing type composite resin for core build-up having improved curing property by chemical polymerization with improved mechanical strength of a cured body under the condition of no light irradiation and with a shortened setting time, the composite resin is composed of a first component including a (meth)acrylate polymerizable resin and an organic peroxide, and a second component including (meth)acrylate polymerizable resin and a reducing agent, a photopolymerizaton initiator and a filler are included in the first component and/or the second component, and oxide powder of a Group II element in the periodic table having an average particle diameter of 1 ?m or less is blended in the first component and/or the second component.