Abstract: A dental prosthetic device design method according to an aspect of the present invention is a method for designing a dental prosthetic device by a computer, the method including: acquiring scan data of maxillary and mandibular dentitions; determining a restoration site of a tooth, based on the scan data; reading out plural pieces of attrition shape data of a tooth related to the restoration site, from maxillary and mandibular tooth shape data sets having plural pieces of attrition shape data with different degrees of attrition for each tooth of the maxillary and mandibular dentitions; selecting attrition shape data from among the plural pieces of attrition shape data, in accordance with the degrees of attrition of the maxillary and mandibular dentitions; placing the selected attrition shape data at the restoration site; and creating shape data of a dental prosthetic device from the attrition shape data placed at the restoration site.

Abstract: A data management system comprises: an outsourcer terminal outsourcing a fabrication by an instruction document; an outsourcee terminal receiving outsourcing and/or sub-outsourcing; and a server device. The server device comprises: a data management unit managing a proprietary authority of data stored in a data storage unit; an order container storage unit storing an order container with which data stored in the data storage unit is correlated, for each order created in an order creation unit of the outsourcer terminal and/or the outsourcee terminal; and an order container management unit managing sharing of the order container, based on an instruction from an order container sharing authority management unit of the outsourcer terminal and/or the outsourcee terminal. The server device, for each order, correlates any format of data element stored with the order container, for management.

Abstract: A method for producing an acid-reactive glass powder, an acid-reactive glass powder obtained by the method, and a dental glass ionomer cement composition comprising the acid-reactive glass powder. The dental glass ionomer cement composition has good mixing property, a sufficient working time, and simultaneously can make the dental glass ionomer cement composition exhibit superior mechanical properties. More specifically, a method for producing an acid-reactive glass powder wherein an acid-reactive glass powder having a range of 2 to 10 ?m of a 50% particle size is obtainable by pulverizing a large-particle-size acid-reactive glass powder having a range of 250 to 3000 ?m of a 50% particle size in a state where a small-particle-size acid-reactive glass powder having a range of 1 to 5 ?m of a 50% particle size coexists.

Abstract: A method of fabricating a plate denture, comprises: creating a denture plate having a concave socket formed thereon and a vertical groove formed on a bottom surface of the socket; applying an adhesive material to the socket and the vertical groove; embedding a reinforcing structure in the vertical groove to which the adhesive material is applied; and arranging an artificial tooth in the socket to which the adhesive material is applied.

Abstract: The present invention relates to a novel diisocyanate-based radical polymerizable silane coupling compound having an urethane bond and a medical and/or dental curable composition comprising the same. The present invention provides a novel silane coupling agent that imparts high affinity to a radical polymerizable monomer, thereby imparting high mechanical strength and durability when used for a medical and/or dental curable composition, and an inorganic filler surface-treated with the novel silane coupling agent and a novel medical and/or dental curable composition.

Abstract: A spray powder mixture to be sprayed to a tooth surface above or below a gingival margin or into a gingival sulcus and a periodontal pocket by a powder spraying apparatus, the spray powder mixture comprising: (a) at least one component selected from a group consisting of a saccharide, a sugar alcohol, an amino acid, a phosphate compound, a carbonate compound, and a calcium compound; and (b) a hydrophobized particulate silica.

Abstract: A method for manufacturing a denture includes: preparing an artificial tooth and a denture base with a concave socket; applying an adhesive to the concave socket; and embedding the artificial tooth in the concave socket to which the adhesive is applied. A socket groove is defined on an inner surface defining the concave socket. The socket groove extends from a concave bottom surface of the concave socket facing a basal surface of the artificial tooth to a lingual concave side surface of the concave socket. Embedding the artificial tooth in the concave socket includes: forming a discharge hole to discharge the adhesive, the discharge hole being defined at an end of the socket groove on a lingual outer surface of the denture base; and discharging the adhesive from the discharge hole.

Abstract: The present invention provides a photopolymerization initiator capable of exhibiting excellent sensitivity to photopolymerization and ensuring a sufficient pot life under ambient light, and a dental photocurable composition comprising the photopolymerization initiator. More specifically, the present invention provides a photopolymerization initiator (c) used in a dental photocurable composition, comprising: (c-1) a photosensitizer, (c-2) a polymerization accelerator, and (c-3) an aryliodonium salt represented by the formula (1): [Chemical Formula 1] [(R1)2I]+[(R2)bPF6-b]???(1) wherein, R1 represents an organic group bonded to I, R2 represents an alkyl group in which a part of hydrogen atoms is substituted with a flourine atom, and b represents the number thereof which is an integer of from 1 to 5, and a dental photocurable composition comprising the photopolymerization initiator.

Abstract: A hinge cap formed by an injection-molding comprises an inner lid capable of being attached to a container body, a hinge, and an outer lid that is connected to the inner lid by the hinge to open and close the cap. The inner lid includes a claw portion. The outer lid includes a tubular outer wall portion and a plurality of convex portions as undercut portions and a plurality of concave portions. One convex portion and a concave portion adjacent to the one convex portion form an engaging portion capable of being engaged with the claw portion. An adjacent convex portion adjacent to the engaging portion and a concave portion adjacent to the adjacent convex portion form a mold pressing portion.

Abstract: An injector comprises a cylindrical barrel, a movable body housed in the barrel, and a plunger coming into separable contact with the movable body. The movable body includes a main body having an outer diameter smaller than an inner diameter of the barrel, a disk-shaped seal body disposed on the main body and including an outer circumferential end brought into close contact with an inner circumferential surface of the barrel, and at least one projecting portion projecting from the main body toward the inner circumferential surface of the barrel. A distance from a central axis of the movable body to a leading end of the at least one projecting portion is smaller than a half of an outer diameter of the seal body.

Abstract: A partial connection full arch artificial connects and fixes in an appropriate occlusal relationship in advance and appropriately defines a region that should be separated and a region that may be standardized, appropriately defines a combination of regions of adjacent surfaces constituting a contact region, an angle of the denture with respect to the virtual occlusal plane, and an area thereof in a region where artificial teeth are brought into contact with each other.

Abstract: The present invention provides a dental hydraulic temporary sealing material composition on which a protection of tooth substance, such as tooth substance strengthening and control of secondary dental caries, can be expected by sustained-releasing various ions including a fluoride ion, while having a high initial setting ability. More specifically, the present invention provides a dental hydraulic temporary sealing material composition comprising 65.0% to 85.0% by mass of component (1): a hydraulic inorganic powder; 10.0% to 25.0% by mass of component (2): an organic solvent; 3.0% to 15.0% by mass of component (3): a resin; and 0.01% to 10.0% by mass of component (4): an ion sustained-release glass.

Abstract: The present invention provides a dental glass ionomer cement composition which can improve the mixing efficiency of a powder and a liquid to an extent where their powder to liquid ratio can be raised in mechanical mixing without reducing a fluoride-release property, and further expresses a high mechanical property. More specifically, the present invention provides a dental glass ionomer cement composition in which a powder and a liquid are separately packaged in a dental capsule, and the powder and the liquid are used by mixing immediately before their use, wherein the composition comprises (a) a hydrophobized acid reactive glass powder, (b) a polyalkene acid, and (c) water, and is not accompanied by a polymerization reaction upon setting.

Abstract: An injector comprises a cylindrical barrel including a discharge port, a seal body coming into close contact with an inner circumferential surface of the barrel, a plunger for pushing and moving the seal body to the discharge port side of the barrel, and a stopper disposed on one of the barrel and the plunger and coming into elastic contact with the other in a radial direction of the barrel.

Abstract: To provide a pair of maxillary and mandibular coupled artificial tooth sets applicable to alveolar ridge shapes of an unspecified large number of edentulous patients and having all the parts of 14 teeth coupled into an ideal arch shape and in an ideal maxillomandibular occlusal contact relationship. The present invention provides a pair of maxillary and mandibular coupled artificial tooth sets clearly defining an arrangement region of all parts at the time of arrangement in virtual three-dimensional coordinates, a contact relationship between maxillary and mandibular artificial teeth, and a harmonizing contact/gliding relationship at the time of movement on a mean-value articulator. This enables provision of a high-quality complete denture in which an occlusal relationship required for a complete denture can be established in a short time regardless of a skill of a technician and a difference in shape of an alveolar ridge of an edentulous patient.

Abstract: A method of estimating and restoring includes: determining a temporary finish line having multiple points on scan data as an imaginary boundary line between a formed portion and an unformed portion of the abutment tooth or abutment tooth model; deleting the scan data including the temporary finish line in an edge portion of the abutment tooth or abutment tooth model; extending, in a portion in which the scanned data is deleted, a crown-side temporary finish line and a root-side temporary finish line in directions supplementing the deleted portion of the scan data, respectively; and estimating and restoring the finish line of the edge portion which is formed on the outer side than the edge portion of the deleted scan data based on the extended crown-side temporary finish line and the extended root-side temporary finish line.

Abstract: An object of the present invention is to provide a dental glass ionomer cement composition having high safety to a human body and sufficient working time, in which mechanical properties, mixing ability in hand mixing and dischargeability out of a container after mechanical kneading are simultaneously improved with satisfactory balance compared with the prior art. Disclosed is a dental glass ionomer cement composition including 0.001 to 3% by weight of (a) a polysaccharide nanofiber having an aspect ratio of 100 or more and an average fiber diameter of 100 nm or less.

Abstract: The present invention relates to a novel diisocyanate-based radical polymerizable silane coupling compound having an urethane bond and a medical and/or dental curable composition comprising the same. The present invention provides a novel silane coupling agent that imparts high affinity to a radical polymerizable monomer, thereby imparting high mechanical strength and durability when used for a medical and/or dental curable composition, and an inorganic filler surface-treated with the novel silane coupling agent and a novel medical and/or dental curable composition.