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 dental curable composition capable of use as a dental material that can substitute part or all of a natural tooth, in particular, a resin material for dental cutting and machining in the field of dental care. When a block shape usable as the resin material is produced, while mechanical properties and aesthetic properties required for a crown prosthetic appliance are maintained, the dental curable composition can be molded and processed with pressure and heating while strain generated in the block is reduced and no cracks and chipping occur. The dental curable composition includes (a) a polymerizable monomer and (b) a filler in a weight ratio of 10:90 to 70:30, and 0.01 to 10 parts by weight of (c) a polymerization initiator and 0.001 to 1 part by weight of (d) a chain transfer agent being a terpenoid compound based on 100 parts by weight of the polymerizable monomer (a).

Abstract: To provide a dental composition wherein the acid buffering capacity can be attained and the acid resistance of the tooth substance can be improved while maintaining very high foul breath inhibition capacity. A dental composition including: ion sustained-release glass; and a carrier for supporting the ion sustained-release glass, wherein the ion sustained-release glass is fluoroaluminoborosilicate glass having a composition range of: 15% to 35% by mass SiO2; 15% to 30% by mass Al2O3; 5% to 20% by mass B2O3; 20% to 45% by mass SrO; 5% to 15% by mass F; and 0% to 10% by mass Na2O.

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: To provide a dental composition wherein the acid buffering capacity can be attained and the acid resistance of the tooth substance can be improved while maintaining very high foul breath inhibition capacity. A dental composition including: ion sustained-release glass; and a carrier for supporting the ion sustained-release glass, wherein the ion sustained-release glass is fluoroaluminoborosilicate glass having a composition range of: 15% to 35% by mass SiO2; 15% to 30% by mass Al2O3; 5% to 20% by mass B2O3; 20% to 45% by mass SrO; 5% to 15% by mass F; and 0% to 10% by mass Na2O.

Abstract: To provide a dental composition wherein the acid buffering capacity can be attained and the acid resistance of the tooth substance can be improved while maintaining very high foul breath inhibition capacity. A dental composition including: ion sustained-release glass; and a carrier for supporting the ion sustained-release glass, wherein the ion sustained-release glass is fluoroaluminoborosilicate glass having a composition range of: 15% to 35% by mass SiO2; 15% to 30% by mass Al2O3; 5% to 20% by mass B2O3; 20% to 45% by mass SrO; 5% to 15% by mass F; and 0% to 10% by mass Na2O.

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: To provides a polymerizable composition having high storage stability and high color stability. To provide a two-paste type dental polymerizable composition of the present invention is a two-paste type dental polymerizable composition comprising a first paste containing (A) at least one kind of polemerizable monomer, an (B) organic peroxide as a chemical polymerization initiator, and a (C) basic filler, and a second paste containing (A) at least one kind of polemerizable monomer, a (C) basic filler and an (D) aromatic amine compound as a chemical polymerization accelerator, wherein the second paste contains 30 to 80 parts by weight of the (C) basic filler based on 100 parts by weight of the total amount of the second paste.

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: 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: To provide a sealer composition for root canal filling consisting of a liquid material containing a polymer (a) of an acid group-containing polymerizable monomer in which a portion or the entirety of the acidic group in a molecule forms a salt with an alkaline metal and water (b), wherein the pH of the liquid material is in the range from 3.5 to 5.5, and a powder material containing an acid reactive inorganic powder (c), wherein, a cured product of a kneaded material of the liquid material and the powder material comprises 3 to 20 part by weight of the polymer (a), 10 to 60 part by weight of the water (b), and 30 to 85 part by weight of the acid reactive inorganic powder (c).

Abstract: To provides a polymerizable composition having high storage stability and high color stability. To provide a two-paste type dental polymerizable composition of the present invention is a two-paste type dental polymerizable composition comprising a first paste containing (A) at least one kind of polemerizable monomer, an (B) organic peroxide as a chemical polymerization initiator, and a (C) basic filler, and a second paste containing (A) at least one kind of polemerizable monomer, a (C) basic filler and an (D) aromatic amine compound as a chemical polymerization accelerator, wherein the second paste contains 30 to 80 parts by weight of the (C) basic filler based on 100 parts by weight of the total amount of the second paste.

Abstract: To provide a two-paste type sealer composition for root canal filling consisting of a first paste containing a polymer (a) of an acid group-containing polymerizable monomer in which a portion or the entirety of the acidic group in a molecule forms a salt with an alkaline metal, a non-acid reactive powder (b) and water (c), wherein the pH of the first paste is in the range from 3.5 to 5.5, and a second paste containing an acid reactive inorganic powder (d), water (c) and a thickener (e), wherein, a cured product of a kneaded material of the first paste and the second paste comprises 3 to 20 part by weight of the polymer (a), 15 to 60 part by weight of the water (c), and 30 to 70 part by weight of the acid reactive inorganic powder (d).

Abstract: A dental curable composition capable of use as a dental material that can substitute part or all of a natural tooth, in particular, a resin material for dental cutting and machining in the field of dental care. When a block shape usable as the resin material is produced, while mechanical properties and aesthetic properties required for a crown prosthetic appliance are maintained, the dental curable composition can be molded and processed with pressure and heating while strain generated in the block is reduced and no cracks and chipping occur. The dental curable composition includes (a) a polymerizable monomer and (b) a filler in a weight ratio of 10:90 to 70:30, and 0.01 to 10 parts by weight of (c) a polymerization initiator and 0.001 to 1 part by weight of (d) a chain transfer agent being a terpenoid compound based on 100 parts by weight of the polymerizable monomer (a).

Abstract: The present invention relates to a deagglomerated glass filler for sustained ion release for imparting ion sustained-release property to a dental material for use in the dental field. The dental material means a material for use in filling, prosthetic repair, temporary sealing, temporary bonding, preparation of a prosthetic appliance, adhesion/luting, pit and fissure sealing, or the like in a dental treatment. A glass filler for sustained ion release that sufficiently continuously releases a metal ion present in a glass composition as compared with a conventional glass filler for sustained ion release has been demanded in the field of a dental material. Such an object is achieved by a glass filler for sustained ion release that is obtained by performing a silane compound treatment step and an acidic polymer treatment step and that is controlled to satisfy a specific D50 particle size relationship in each of the steps.

Abstract: To provide a dental composition wherein the acid buffering capacity can be attained and the acid resistance of the tooth substance can be improved while maintaining very high foul breath inhibition capacity. A dental composition including: ion sustained-release glass; and a carrier for supporting the ion sustained-release glass, wherein the ion sustained-release glass is fluoroaluminoborosilicate glass having a composition range of: 15% to 35% by mass SiO2; 15% to 30% by mass Al2O3; 5% to 20% by mass B2O3; 20% to 45% by mass SrO; 5% to 15% by mass F; and 0% to 10% by mass Na2O.

Abstract: The present invention relates to a dental curable composition that can be suitably used as a dental material that can substitute part or all of a natural tooth, in particular, a resin material for dental cutting and machining in the field of dental care. An object of the present invention is to provide a dental curable composition in which, when a block shape usable as a resin material for dental cutting and machining is produced while mechanical properties such as hardness, bending strength and compressive strength as well as aesthetic property required for a crown prosthetic appliance are maintained, the dental curable composition can be molded and processed with pressure and heating while strain generated in the block is reduced and no cracks and chipping occur. There is provided a dental curable composition including (a) a polymerizable monomer and (b) a filler in a weight ratio of 10:90 to 70:30, and including 0.01 to 10 parts by weight of (c) a polymerization initiator and 0.

Abstract: To provide a two-paste type sealer composition for root canal filling consisting of a first paste containing a polymer (a) of an acid group-containing polymerizable monomer in which a portion or the entirety of the acidic group in a molecule forms a salt with an alkaline metal, a non-acid reactive powder (b) and water (c), wherein the pH of the first paste is in the range from 3.5 to 5.5, and a second paste containing an acid reactive inorganic powder (d), water (c) and a thickener (e), wherein, a cured product of a kneaded material of the first paste and the second paste comprises 3 to 20 part by weight of the polymer (a), 15 to 60 part by weight of the water (c), and 30 to 70 part by weight of the acid reactive inorganic powder (d).