Abstract: Provided is an impression tray with which three-dimensional data is easily obtained, including an upper jaw impression tray and lower jaw impression tray, wherein the upper jaw impression tray includes an upper jaw impression tray main body 11 including a surface where the impression material is to be placed; the lower jaw impression tray includes a lower jaw impression tray main body including a surface where the impression material is to be placed; a handle is attachably and detachably provided on at least either one of the upper jaw impression tray main body and lower jaw impression tray main body; and the handle, having a posture of attachment, projects from at least any one of a labial side, the upper jaw impression tray excepting the surface where the impression material is to be placed, and lower jaw impression tray excepting the surface where the impression material is to be placed.

Abstract: Provided is a bite registration tool configured to properly adjust its inclination in taking a bite registration and with which an accurate bite registration can be taken. The bite registration tool includes a rear curved plate that has a curved plate shape and is to be arranged between lips and alveolar ridges of a patient; and a front curved plate that has a plate shape, arranged in a manner that one plate surface faces to the rear curved plate having a predetermined gap, to be arranged forward having contact with the lips, wherein the other plate surface of the front curved plate is provided with at least one ridge protruding and extending in a predetermined direction.

Abstract: A tool for obtaining a dental occlusion in an edentulous patient has a main body including a rear curved plate to be positioned at an intraoral buccal of maxillary and mandibular ridges, a front curved plate to be positioned at extraoral upper and lower lips, a connecting part that connects respective intermediate parts of the rear and front curved plates along a vertical direction, and a through-hole that penetrates the rear and front curved plates and the connecting part, fixed in a state in which the connecting part is held between the upper and lower lips. The tool further includes an adjusting shaft inserted into the through-hole, and having one end projecting extraorally from a center between the upper and lower lips, and another end having a tongue support and intraorally holding a tip end of a tongue, to adjust the tongue support position and suppress tongue movement.

Abstract: A full denture base manufacturing method is provided that can easily manufacture a full denture base, using a set of maxillary impression tray and a mandibular impression tray for taking an impression from a patient including an edentulous patient.

Abstract: An impression tray set for edentulous jaw is formed by a maxillary impression tray and a mandibular impression tray respectively including a tray main body having a U-shaped groove on which an impression material is to be applied on a front surface thereof, an engaging part formed on a back surface of the U-shaped groove in a position corresponding to an alveolar ridge of front teeth, and a handle part detachably connected to the engaging part. Each of the maxillary and mandibular impression trays includes projecting parts provided on the back surface at portions corresponding to an alveolar ridge from a first molar part to a premolar part. The projecting parts determine bite position and height in a state in which at least a part of flat top surfaces of the projecting parts contact each other when taking an impression.

Abstract: Provided is an impression tray with which three-dimensional data is easily obtained, including an upper jaw impression tray and lower jaw impression tray, wherein the upper jaw impression tray includes an upper jaw impression tray main body 11 including a surface where the impression material is to be placed; the lower jaw impression tray includes a lower jaw impression tray main body including a surface where the impression material is to be placed; a handle is attachably and detachably provided on at least either one of the upper jaw impression tray main body and lower jaw impression tray main body; and the handle, having a posture of attachment, projects from at least any one of a labial side, the upper jaw impression tray excepting the surface where the impression material is to be placed, and lower jaw impression tray excepting the surface where the impression material is to be placed.

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: Provided is an impression tray which enables impressions of upper and lower jaws to be taken at the same time, and on which an impression material can be heaped sufficiently. The impression tray includes an outer frame that curves and extends from an incisors side toward a molars side, an inner frame that extends with a distance away from the outer frame, a connecting part that one end of which is fixed to the outer frame and another end of which is fixed to the inner frame, a face material that is spread over the distance between the outer frame and the inner frame, and a handle that is arranged at the incisors side of the outer frame. A portion of the outer frame at the incisors side is highest position, and its height is for no less than 2 mm and no more than 15 mm.

Abstract: A full denture base manufacturing method is provided that can easily manufacture a full denture base, using a set of maxillary impression tray and a mandibular impression tray for taking an impression from a patient including an edentulous patient.

Abstract: The invention provides a plastic impression tray for an upper jaw having a bottom portion provided with an outer wall and a bulge portion. A rim is provided along an upper end of the outer wall, elongated through holes having a particular width are provided in the outer wall such that a distance between the adjacent through holes is particular times the width, similar elongated through holes are provided in the bulge portion, circular through holes having a particular diameter are provided at the center of the distances of the adjacent elongated through holes in the outer wall, and elongated end portion side through holes having particular width and length are provided on a line connecting the bottom portion side end portions of the elongated through holes at the closest side to the end portions of the U-like shaped portion in the outer wall and the bulge portion.

Abstract: An impression tray set for edentulous jaw, including a pair of a maxillary impression tray and a mandibular impression tray for use in taking an intraoral impression of an patient including an edentulous patient, and capable of simultaneously recording bite position and height when taking the impression, is provided.

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: To provide a dental hydraulic temporary sealing material composition setting faster than conventional composition, excellent adhesiveness with cavity, and extremely good operativity of filling in an oral cavity, the dental hydraulic temporary sealing material composition includes calcium sulfate, a vinyl acetate resin, an inorganic filler, alcohols having a boiling point of 110° C. or more, and a nonionic surfactant, whereby water on a cavity can adhere, without being repelled, to a paste surface due to hydrophilic effect between an organic solvent having proper hydrophilicity and the nonionic surfactant, the water can permeate and diffuse rapidly and stably through the inside of the paste by the hydrophilic effect so as to set faster than conventional composition, and since the hydrophilic effect is effective for adhesiveness with cavity, filling property in an oral cavity becomes extremely good.

Abstract: An indicator is useful for detecting pressure points on a denture. The indicator is made of a composition that easily adheres to oral mucosa, has a proper viscosity in an oral cavity environment, can be properly spread between an oral mucosa surface and a denture base, and easily specifies an affected part. The composition includes a fatty acid ester having a melting point of 30 to 50° C., a water-soluble high polymer, and a metal oxide. Preferably, the fatty acid is 40 to 95% by weight of the composition, the water-soluble high polymer is 1 to 59% by weight of the composition, and the metal oxide is 0.1 to 50% by weight of the composition.

Abstract: The invention provides a plastic impression tray for an upper jaw having a bottom portion provided with an outer wall and a bulge portion. A rim is provided along an upper end of the outer wall, elongated through holes having a particular width are provided in the outer wall such that a distance between the adjacent through holes is particular times the width, similar elongated through holes are provided in the bulge portion, circular through holes having a particular diameter are provided at the center of the distances of the adjacent elongated through holes in the outer wall, and elongated end portion side through holes having particular width and length are provided on a line connecting the bottom portion side end portions of the elongated through holes at the closest side to the end portions of the U-like shaped portion in the outer wall and the bulge portion.

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 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.