Abstract: An intraoral examination method for determining the state of periodontal disease is provided. The method is an intraoral examination method for measuring a signal intensity of a nucleic acid from an oral bacterial group present in an oral sample, calculating an abundance of the bacterial group from a measured value of the signal intensity, and determining the state of periodontal disease using the obtained calculated value as an index, wherein the abundance of the bacterial group shows a correlation between a bacterial load of a bacterial species that increases as a periodontal pocket value increases and a bacterial load of a bacterial species that decreases as a periodontal pocket value increases.

Abstract: To provide a more convenient row of connected artificial teeth which is used for implantation, in this row of connected artificial teeth, a plurality of artificial teeth (11) that are formed of resin are integrally connected, an occlusal face (11a) is formed over one face of each of the artificial teeth, and a hole (12) is provided for at least one of the artificial teeth on an opposite side of the occlusal face, into the hole a coupling member with an artificial tooth root being to be inserted.

Abstract: To provide a scale which makes it possible to adjust the temperature of a furnace so that a ceramic blank can be properly heated even if various conditions such as the combination of the used ceramic blank and investment, and the type and size of the furnace vary, the scale comprises: a scale part; and a base part, the scale part and the base part being formed of wax or resin, wherein the base part has a shape of protruding from part of the scale part, a size of the scale part is larger than that of the base part in a direction orthogonal to a protruding direction of the base part.

Abstract: Provided is an occlusal pressure analysis program capable of improving the accuracy of grasping the occlusal contact state in occlusal pressure acquisition by a pressure detection means, including a step of obtaining a pressure value for each minimum unit from which the pressure value can be recognized by a pressure detection means, and a step of, regarding each of the minimum units where the pressure value exists as a detection unit, separating the detection units into the detection units which can be regarded as due to occlusion and the detection units which are unclear whether they are due to occlusion, based on the pressure value.

Abstract: A dental brace is formed with a bracket main body portion, an opening/closing lid portion, 3a and a tooth abutting plate portion. The tooth abutting plate portion includes, on one surface side, a first surface portion which abuts on the surface of a tooth T on the side of a tongue and includes, on a side opposite to the first surface portion, a second surface portion to which the bracket main body portion is adhered, and a charge hole portion is formed which penetrates from the first surface portion to the second surface portion.

Abstract: To provide a dental handpiece device that can suppress a case where a drilled face is in a blind spot, and thus cannot be observed, this dental handpiece device includes: a dental handpiece main body; and a dental handpiece imaging device with which the dental handpiece main body is equipped, wherein the dental handpiece imaging device includes: a plurality of camera modules each of which takes an image, to convert the image, which is taken, to an electric signal; and a processing means that receives the electric signal from each of the camera modules, to calculate for generating an image based on the electric signal, and to switch a display of the image, which is taken by each of the camera modules.

Abstract: A method for designing dentures according to which artificial teeth can be easily and accurately attached to a denture base, which is designed and shaped by CAD/CAM, when the artificial teeth are arranged on the denture base is provided. The method for designing a denture (10) on a computer based on data on an intraoral shape comprises: creating data on a shape of a denture base (20) based on the intraoral shape (S22); creating data on a position of an artificial tooth (30) to be arranged on the denture base (S23); and creating data on a shape of an occlusal guide (40) that is tabular and has a recess part corresponding to a shape of the arranged artificial tooth in an occlusal surface side (S24).

Abstract: A method for simply predicting the degree of inflammation of periodontal tissue such as an inflamed area (PISA or CAPRS value), and a device (e.g., a DNA chip) used for the method are provided. The method is a method for estimating a periodontal pocket inflammation area by detecting bacterial loads of two or more types of bacteria in saliva and using the obtained detection results as indexes, wherein bacteria to be detected include: a bacterium having a positive correlation between the bacterial load of the bacterium and the periodontal pocket inflammation area and a bacterium having a negative correlation between the bacterial load of the bacterium and the periodontal pocket inflammation area.

Abstract: The present invention provides a denture block capable of integrally and simply manufacturing a denture by using a CAD/CAM system. A denture is manufactured by cutting using a CAD/CAM system in a state in which the ridge portion 1b is gripped, has: an upper part which is a white part 2 to correspond to a tooth part of the denture; and a lower part which is a gingival color part 3 to correspond to a denture plate of the denture, wherein the white part 2 and the gingival color part 3 are integrally formed by being brought into close contact with each other with no gaps therebetween including the inside thereof, and a plurality of convex portions 4 and concave portions 5 are formed on an upper surface 3a which is the boundary surface of the gingival color part 3 with the white part 2.

Abstract: A dental gypsum slurry includes water and a dental gypsum powder containing hemihydrate gypsum and a polycarboxylic acid salt-based water-reducing agent, wherein a powder-water ratio of the water to the dental gypsum powder is 0.24 to 0.50, and when the water and the dental gypsum powder being mixed are poured up to a height of 50 mm in a cylindrical mold having an inner diameter of 35 mm, which is vertically placed on a flat surface, and then, the cylindrical mold is pulled upward at 10 mm/s at 30 seconds after start of mixing so that a mixture spreads planarly, the diameter of the mixture is 141.4 mm or more.

Abstract: A method for designing dentures according to which artificial teeth can be easily and accurately attached to a denture base, which is designed and shaped by CAD/CAM, when the artificial teeth are arranged on the denture base is provided. The method for designing a denture (10) on a computer based on data on an intraoral shape comprises: creating data on a shape of a denture base (20) based on the intraoral shape (S22); creating data on a position of an artificial tooth (30) to be arranged on the denture base (S23); and creating data on a shape of an occlusal guide (40) that is tabular and has a recess part corresponding to a shape of the arranged artificial tooth in an occlusal surface side (S24).

Abstract: A dental treatment material includes: a liquid dispersion of a glass powder; and an inorganic phosphoric acid aqueous solution, wherein the glass powder contains zinc, silicon, and fluorine and does not substantially contain aluminum.

Abstract: According to one aspect of the present invention, a dental curable composition includes: polymerizable monomers; inorganic particles (A1) and/or inorganic particles (A2) (excluding the inorganic particles (A2); and inorganic particles (B). The inorganic particles (A1) are surface-treated with a compound expressed by a general formula (1) and have a volume-median particle size of greater than or equal to 0.1 ?m and less than or equal to 0.9 ?m. The inorganic particles (A2) are surface-treated with a compound expressed by a general formula (2) and have a volume-median particle size of greater than or equal to 0.1 ?m and less than or equal to 0.9 ?m.

Abstract: An applicator (1) includes a main body (10), a parallel crank (40), and a lever (50). The parallel crank (40) includes a first crank bar (41) and a second crank bar (42). The first crank bar (41) and the second crank bar (42) each have one end portion swingably coupled to the main body (10). To the lever (50), another end portion of the first crank bar (41) and another end portion of the second crank bar (42) are each swingably coupled. The second crank bar (42) covers at least a part of side surfaces on both sides of the first crank bar (41) in an axial direction of a pin (43) as a rotation axis of the first crank bar (41) with respect to the main body (10) in a sandwiching manner.

Abstract: A tooth whitening composition includes a whitening component; a metal ion chelator; water; and polyalcohol, the weight ratio of the water and the polyalcohol being, water:polyalcohol=3.5:1 to 20:1, and also, the total amount of the water and the polyalcohol, in the composition, being greater than or equal to 50 wt. % and less than or equal to 85 wt. %.

Abstract: A dental glass includes: phosphorus; sodium and/or potassium; and calcium, wherein the dental glass contains, in terms of oxide, phosphorus (P2O5) by greater than or equal to 40% by mass and less than or equal to 70% by mass, sodium and/or potassium (Na2O, K2O) by greater than or equal to 20% by mass and less than or equal to 40% by mass, and calcium (CaO) by greater than or equal to 1% by mass and less than or equal to 20% by mass, and wherein the dental glass does not substantially contain silicon and aluminum.