Abstract: To efficiently select and proliferate the mesenchymal stem cells without necessity of an exclusive separating device and a complicated separating operation, mesenchymal stem cells are cultured by seeding at least one of a bone marrow solution, an umbilical cord blood, a peripheral blood, a synovial membrane and an amniotic membrane in a liquid culture medium which is filled in a vessel, includes water as its main components and having a specific gravity between 1.06 and 1.10 at 37° C., and making a culture at a temperature 37±2° C. on a ceiling side surface of the vessel, preferably the specific gravity being regulated by use of at least one selected from silica fine powder coated by polyvinyl pyrrolidone, a water soluble copolymer of sucrose and epichlorohydrin, and a water soluble compound including a triiodo aromatic ring.

Abstract: To minimize used titanium materials, a container for an implant fixture has a housing main body 1, an implant fixture holding member 2, and a cap 3, the main body 1 is made of glass or the like and has guide grooves 1a in an axial direction, the holding member 2 is made of titanium and includes a bottom part 2a contacting with a top of a dental implant fixture X, and three or more guide parts 2b surrounding the fixture X, the guide part 2b has an insertion lock part 2ba to be locked in the guide groove 1a, the cap 3 is made of a resin, has a press part 3a, and seals the upper surface of the main body 1, and the press part 3a contacts with an engagement hole Xa and/or an upper surface Xb of the fixture X to press the fixture X.

Abstract: To provide a paste-type polymerizable composition used in a tooth restoration treatment, where the paste-type polymerizable composition has excellent storing stability, has proper polymerization property in the presence of water, and hardly discolors with passage of time after polymerization, the paste-type polymerizable composition consists of a first paste and a second paste, where the first paste includes an ascorbic acid compound (b), (meth)acrylate (d) not having an acid group and a filler (e) not reacting to acid, and the second paste includes a peroxide (a) not having a polymer structure and being compatible with water or dissoluble with water, (meth)acrylate (c) having an acid group, (meth)acrylate (d) not having an acid group, a filler (e) not reacting to acid and water (f).

Abstract: The method of tooth surface treatment includes the steps of applying a photopolymerization type dental surface coating material to a smooth surface of an erupted tooth and/or a non-cavitated caries, and thereafter irradiating light on the applied part to polymerize and harden the photopolymerization type dental surface coating material. By applying the photopolymerization type dental surface coating material used in the present invention to the smooth surface of the erupted tooth and/or the tooth before forming a cavity, the smooth surface of the erupted tooth and/or the tooth before forming a cavity can be protected for a long period of time from a dental caries.

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: For easier and surer fixing to a syringe holder, a mixing tip fixed at two portions of a top end of a syringe holder (X) containing two parallel syringes (Y, Y) comprising: a housing (2) including a mixing element (1); a paste guiding member (3) including paste inlets (3a) attached to nozzles of two syringes (Y, Y), and flow paths (3b) to introduce pastes extruded from the syringes into the housing (2) through the paste inlets (3a); and two locking members fixed at or integrally formed with the paste guiding member (3) or the housing (2) to be locked to the syringe holder (X), wherein the two locking members are a pawl part (4) locked with a locking hole (Xa) formed at the syringe holder (X) and a projection part (5) inserted into a hole part (Xb) provided at the syringe holder (X), or two pawl parts (4, 4).

Abstract: A fabrication aiding apparatus capable of easily and properly setting a margin line is provided. The apparatus includes a RAM (Random Access Memory) to store three-dimensional shape data on a model of an abutment tooth to which a dental prosthesis is applied, an accepting section to accept the input of specification of an angle formed between a line defining a contact point and a reference axis on a face containing the reference axis in the model, a contact point detecting section to detect, based on the three-dimensional shape data, three-dimensional position information about a contact with the line forming a specified angle with the reference axis on the face containing the reference axis in the model, and a margin determining section to determine, based on coordinates of a contact point, three-dimensional position information of a margin line in the model.

Abstract: For easy washing and sterilizing of a holding tray for drill bits used in a dental implant operation, a holding tray X includes a tray main body 1 made of a hard material capable of autoclave sterilizing and holding members 2 made of an elastic material capable of autoclave sterilizing, the tray main body 1 includes holding plates 1b and holding member supporting plates 1c on a back surface of a substrate part 1a having rows of linearly aligned through holes 1aa for drill bits, the holding plates 1b include half circular cylindrical recessed parts 1ba at portions corresponding to the through holes 1aa, the supporting plates 1c have a fixed interval to a plane 1bb along the recessed part 1ba, and the holding members 2 are detachably held between the holding plates 1b and the supporting plates 1c to hold the drill bits together with the recessed parts 1ba.

Abstract: To attract a magnet in a denture to a keeper fixed at an embedded implant fixture with a complete closed magnetic circuit and without care to metal allergy, an abutment 1 for a dental magnetic attachment is made of a titanium or alloy, and has a male screw part 1a at a center part of a bottom surface to be screwed into a female screw part 3a of an implant fixture 3, a keeper attaching hole 1b at an upper surface in which a keeper 2 having a uniform thickness and the same size/area as an attracting surface of a magnet is inserted and bonded/fixed; and an engagement part 1c for a rotary tool at a center in the keeper attaching hole 1b and/or at an outer frame part around the keeper attaching hole for screwing the abutment 1 in the implant fixture 3.

Abstract: To provide a dental template capable of safely, easily forming an embedding hole for a dental implant fixture at a jawbone and being removed easily after drilling of the embedding hole, the dental template is a hard dental template mounted along an alveolar ridge including at least a lost tooth part and provided with a guide hole 1 at a portion corresponding to the lost tooth part to guide a drill bit for drilling a hole for embedding of an implant fixture at the jawbone, in which a through hole 2 for extruding an excess impression material toward the oral cavity inner side is formed at a predetermined portion on the occlusal surface side other than a portion at which the guide hole (1) is formed.

Abstract: To minimize titanium materials and accurately and easily fix a dental implant fixture, a housing container includes a glass housing main body, a resin cap, and a resin implant fixture holding member, the cap includes a press part at an inner surface, the implant fixture holding member fits into the bottom side of the housing main body, the implant fixture holding member has, at an upper surface side, three or more groove parts formed radially from a center to an end side, and titanium plate-like guide parts which include, at the center side, projected portions slightly projecting from the upper surface, and include, at the radial end side, erected portions extending up to at least equal to or more than ? of a height from a tip of the dental implant fixture to erect around an outer peripheral surface of the dental implant fixture are inserted in the groove parts.

Abstract: To afford a higher initial adhesion property, quicker dry and a higher safety for a living body than conventional adhesive agents, an adhesive agent for a silicone rubber, which is used to adhere a silicon rubber to an impression tray or a denture for an impression making or a denture relining in a dental care, includes (A) 99 to 40 weight % of methyl acetate, and (B) 1 to 60 weight % of one kind or more of adhesive imparting agents selected from a silicone resin, a silicone raw rubber, a silicone denatured acrylic resin, a silane coupling agent, an organopolysiloxane having an alkenyl group, an organopolysiloxane having at least two hydrogen atoms in one molecule, and a silicone soluble platinum compound, and may further include (C) 0.1 to 3 weight % of one kind or more of a coloring agent, an antioxidant and a fragrance.

Abstract: To efficiently select and proliferate the mesenchymal stem cells without necessity of an exclusive separating device and a complicated separating operation, mesenchymal stem cells are cultured by seeding at least one of a bone marrow solution, an umbilical cord blood, a peripheral blood, a synovial membrane and an amniotic membrane in a liquid culture medium which is filled in a vessel, includes water as its main components and having a specific gravity between 1.06 and 1.10 g/ml at 37° C., and making a culture at a temperature 37±2° C. on a ceiling side surface of the vessel, preferably the specific gravity being regulated by use of at least one selected from silica fine powder coated by polyvinyl pyrrolidone, a water soluble copolymer of sucrose and epichlorohydrin, and a water soluble compound including a triiodo aromatic ring.

Abstract: To provide a tooth coating composition capable of maintaining dental caries preventing effects of CPP-ACP, such as recalcification effect and demineralization-inhibiting effect, for a long period of time, a tooth coating composition is made not to contain water, but to include (a) 0.5 to 20% by weight of a casein phosphopeptide-amorphous calcium phosphate complex (CPP-ACP) and/or a casein phosphopeptide-amorphous calcium fluoride phosphate complex (CPP-ACFP), (b) 5 to 70% by weight of a coating film-forming polymer, (c) 5 to 70% by weight of an organic solvent selected so as to contain alcohol, (d) 0.01 to 10% by weight of a fluorine compound, and (e) 0.1 to 20% by weight of a thickener, the tooth coating composition being used by coating on a tooth.

Abstract: To provide a dental restorative material composition having good surface lubrication and high strength without causing uneven abrasion, a dental restorative material composition includes 10 to 50% by weight of an organic-inorganic composite filler having an average particle diameter of 5 to 60 ?m, a (meth)acrylate compound, an inorganic filler having an average primary particle diameter of 0.1 to 0.4 ?m, and a photopolymerization initiator, where the organic-inorganic composition is produced by mixing a (meth)acrylate compound and 60 to 90% by weight of an inorganic filler having an average primary particle diameter of 0.1 to 0.4 ?m, curing the mixture, and pulverizing the cured material, and a difference between a ratio (% by weight) of the (meth)acrylate compound in the organic-inorganic composite filler and a ratio (% by weight) of the (meth)acrylate compound in the entire composition is within ±5 (% by weight).

Abstract: To easily incise a gingiva particularly at a tongue side and a lip side of a jawbone formed as a bank shape, a gingiva incising device has a cylinder portion, which is longer than a thickness of a gingiva and has approximately the same diameter as a diameter of a dental implant fixture, at a leading end side of a main body portion having a grip portion at a rear end side, and has a cutting blade portion for incising the gingiva formed on a whole periphery of the leading end of the cylinder portion, and the cutting blade portion has a portion which protrudes gradually from a position closest to the grip portion toward a position away from the grip portion.

Abstract: To provide a tooth-adhesive composition not causing lowering of preservation stability due to a reaction between a filler having a X-ray imaging property and an acid component in the composition, and not having necessity for mixing and kneading of components separated in two or more packages unlike a conventional case, the tooth-adhesive composition includes (a) a (meth)acrylate compound having an acid group, (b) a filler which is an alumino-silicate glass powder including Sr and/or Ba and/or Ca, and (c) a photopolymerization catalyst, where the filler does not substantially react with the (meth)acrylate compound having an acid group, which is the a) component, by making Al2O3 content to be 15% or less by weight in terms of oxides, and these (a), (b), and (c) components co-exist in one pack.

Abstract: To prevent a bursting sound generated when a mixed and kneaded material obtained by mixing and kneading predetermined amounts of a powder component and a liquid component in a capsule for a tooth restorative material is administrated to a position to be restored in a patient's tooth, the capsule is structured such that a protrusion portion (4c) having its inner end positioned slightly inside an outer periphery of a circular hole of a first opening forming portion (1b) is provided on a rear end portion of a nozzle (4) in such a manner as to be positioned at a position which is in the vicinity of the first opening forming portion (1b) to form the circular hole for an outlet of a mixed and kneaded material (C) of a powder component storing cup (1) and is away from at least a hinge portion of the circular hole.

Abstract: A hydrophilic organopolysiloxane composition of the hydrosilylation reaction cure type for use as dental impression material is characterized by comprising as essential components (A) a diorganopolysiloxane having at least 0.1 silicon-bonded alkenyl group in a molecule, (B) a liquid or solid organopolysiloxane having average compositional formula (1), comprising SiO2 units and R3SiO1/2 units (R is a monovalent hydrocarbon, alkoxy or hydroxyl group) and having a viscosity of at least 10 mPa-s at 23° C., (C) an organohydrogenpolysiloxane having at least two silicon-bonded hydrogen atoms in a molecule, (D) a hydrosilylation catalyst, and (E) a polyether having average compositional formula (2).

Abstract: To minimize an amount of unmixed fluids remaining inside, the mixing element includes right-handed and left-handed spiral blades (1) having a shape twisted 180 degrees and being alternately and continuously provided in the axial direction to make end parts (1a) of the adjacent spiral blades to orthogonally cross, turbulence generating parts (1c) divided by an extension face (1ca) ad a rising face (1cb) are formed at four portions, which continue toward a front-side side edge (1aL1) and an outer periphery at a part spirally continuing to the back side from the front-side side edge (1aL1) and are surrounded by a front-side end edge (1cL1), an axial-side edge (1cL2) and a front-side edge (1cR1), and an inflow part (1d) formed by notching a portion from an end-part starting edge to a back-side end edge is formed at a back-side side edge opposed to positions of the turbulence generating part (1c).