Abstract: To provide a chewing evaluation method capable of easily measuring chewing by an easy method without using a special expensive apparatus, together with a chewing determination kit, the chewing determination kit comprises testing food which contains ascorbic acid, an ascorbic acid derivative, and/or ethanol as detection components, and an indicator reacted with the components, based on a fact that there appears a difference in a leaching out state of components for chewing determination depending on a chewing degree when testing food containing the components for chewing determination is used as a factor which is necessary for chewing determination in a wide sense but lacks in the conventional chewing determination method.

Abstract: To provide an antimicrobial dental composition, which can provide an antimicrobial effect effectively and safely against microbes and viruses existing in an oral cavity, having high safety without stimulus and has antimicrobial activity for a long period of time and being advantageous for a paste or solid-like dental composition. The antimicrobial dental composition, contains a powder containing a grapefruit seed extract and/or a persimmon juice extract included in cyclodextrin, in a dental composition, such as dental retorative material, dental restoration auxiliary material and oral hygiene material or the like.

Abstract: A mouth rinse composition that is safe even if accidentally ingested, can be easily used by aged persons and children without uncomfortable feeling, and is clearly distinguished from the conventional mouth rinse compositions, comprises a combination of an extract of a persimmon or persimmon tannin and an extract of grapefruit seed, which effectively sterilize wide range of offending bacteria causing deterioration in intra-oral environment, such as dental caries, periodontal disease, oral odor and coated tongue, present in an oral, and an algefacient and/or an edulcorant gentle to teeth, which makes the composition easy to use for aged persons and children.

Abstract: To provide a root canal filling material remover that can remove a root canal filling material such as a gutta-percha point which is liable to remain in a root apex portion, or a sealer for root canal filling which is liable to enter into a dental pulp of a root canal wall and remain therein, after being removed during the re-treatment of a root canal, in a simple operation, without need of an excessive root canal enlargement operation as has been seen before, the root canal filling material remover contains at least one member selected from limonene, eucalyptus oil, chloroform and xylene, and a surfactant. Further, a polishing material may be added to the root canal filling remover.

Abstract: To dissolve a calcium hydroxide-based root canal filler having been carbonated and fixed within a root canal, which cannot be removed from the root canal by means of a reamer and a file, during doing the root canal treatment again, and to sterilize the root canal, the solubilizing agent of the carbonated calcium hydroxide-based root canal filler includes water containing 1 to 60% by weight of the whole of at least one acid selected from the group consisting of phosphoric acid, gluconic acid, fumaric acid, lactic acid, glycolic acid, propionic acid, malic acid, maleic acid, citric acid, succinic acid, tartaric acid, acetic acid, glycerophosphoric acid, and malonic acid; and 0.1 to 30% by weight of the whole of at least one sterilizing properties-imparting agent selected from the group consisting of an iodine preparation, a surfactant, a bactericide, hydrogen peroxide, and limonene.

Abstract: A calcium hydroxide-based root canal filling material having superior bioaffinity is provided, which is a temporary root canal filling material to be used in the root canal treatment of teeth, having such roles that, when filled temporarily in the root canal, it stays in an affected part during a predetermined period of time, thereby a root canal being prevented from staining by pathogenic bacteria or exudates, has corrosion resistance, and promotes the remedy of an apical abscess by wound of the root apex portion. The calcium hydroxide-based root canal filling material is comprised of 3 to 20% by weight of polyvinylpyrrolidone and/or polyvinyl methyl ether, 30 to 60% by weight of calcium hydroxide, and 35 to 60% by weight of water. Further, there is an embodiment in which from 5 to 20 parts by weight of at least one X-ray opacity medium selected from barium sulfate, zirconium oxide, bismuth subnitrate, bismuth trioxide, and bismuth carbonate and/or 0.

Abstract: A calcium hydroxide-based root canal filling material having superior bioaffinity is provided, which is a temporary root canal filling material to be used in the root canal treatment of teeth, having such roles that, when filled temporarily in the root canal, it stays in an affected part during a predetermined period of time, thereby a root canal being prevented from staining by pathogenic bacteria or exudates, has corrosion resistance, and promotes the remedy of an apical abscess by wound of the root apex portion. The calcium hydroxide-based root canal filling material is comprised of 3 to 20% by weight of polyvinylpyrrolidone and/or polyvinyl methyl ether, 30 to 60% by weight of calcium hydroxide, and 35 to 60 % by weight of water. Further, there is an embodiment in which from 5 to 20 parts by weight of at least one X-ray opacity medium selected from barium sulfate, zirconium oxide, bismuth subnitrate, bismuth trioxide, and bismuth carbonate and/or 0.

Abstract: To dissolve a calcium hydroxide-based root canal filler having been carbonated and fixed within a root canal, which cannot be removed from the root canal by means of a reamer and a file, during doing the root canal treatment again, and to sterilize the root canal, the solubilizing agent of the carbonated calcium hydroxide-based root canal filler includes water containing 1 to 60% by weight of the whole of at least one acid selected from the group consisting of phosphoric acid, gluconic acid, fumaric acid, lactic acid, glycolic acid, propionic acid, malic acid, maleic acid, citric acid, succinic acid, tartaric acid, acetic acid, glycerophosphoric acid, and malonic acid; and 0.1 to 30% by weight of the whole of at least one sterilizing properties-imparting agent selected from the group consisting of an iodine preparation, a surfactant, a bactericide, hydrogen peroxide, and limonene.

Abstract: To provide a root canal filling material remover that can remove a root canal filling material such as a gutta-percha point which is liable to remain in a root apex portion, or a sealer for root canal filling which is liable to enter into a dental pulp of a root canal wall and remain therein, after being removed during the re-treatment of a root canal, in a simple operation, without need of an excessive root canal enlargement operation as has been seen before, the root canal filling material remover contains at least one member selected from limonene, eucalyptus oil, chloroform and xylene, and a surfactant. Further, a polishing material may be added to the root canal filling remover.

Abstract: To provide a powder for a glass ionomer-based sealer for root canal filling, which can be easily removed from a root canal when the re-filling of the root canal is needed, while possessing the sealability and biocompatibility of dental glass ionomer cement powders of the conventional art used as sealer for root canal filling, the powder of a glass ionomer-based sealer for root canal filling is constituted by compounding a fluoroaluminosilicate glass powder with a polymer that is non-reactive with a polycarboxylic acid, such as bees wax, polyisoprene, polyisoprene copolymers, polystyrene, natural gutta-percha, carnauba wax, castor wax, shellac, dammar gum, and copal gum, and/or an inorganic filler that is non-reactive with a polycarboxylic acid, such as diatomaceous earth, talc, and perlite. A compounding amount of the polymer that is non-reactive with a polycarboxylic acid, and the inorganic filler that is non-reactive with a polycarboxylic acid, is from 2 to 70% by weight.

Abstract: A root canal filling material is disclosed, including (A) from 1 to 50% by weight of guttapercha and/or trans-polyisoprene, (B) from 0.1 to 10%, by weight of polybutene having a number average molecular weight of from 600 to 4,000, (C) from 0.1 to 10% by weight of ester gum, (D) from 0.1 to 20%, by weight of paraffin wax, and (E) from 10 to 95% by weight of one or two or more inorganic fillers selected from zinc oxide, barium sulfate and calcium hydroxide. The root canal filling material of the invention has high adhesion to root canal walls and a sufficient working time and can be used in a method of filling a root canal upon heat softening during the root canal treatment.

Abstract: An antiseptic-containing alginate impression material contains 0.01 to 7 parts by weight of an antiseptic such as glutaraldehyde and chlorohexydine gluconate per 100 parts by weight of a cured product of an alginate impression material. The antiseptic may be encapsulated in a microcapsule or clathrated in a cyclodextrin.

Abstract: A material pack for the preparation of plate dentures comprises an outer pack formed of a material capable of shielding active energy beams, on which the necessary particulars are specified including the size and form of the jaws, the size, form and color tone of artificial teeth and the color tone of a photopolymerizable resin and the outer pack containing therein a matrix formed of a light transmitting material, the artificial teeth provided on the matrix while a part thereof projecting from the matrix, and the photopolymerizable resin provided inside of the matrix. The matrix may be coated thereon with a material capable of shielding active energy beams.

Abstract: A dental tray of a shape suitable for direct contact with the mucosal surface of the mouth and capable of retaining an impression making material thereon comprising a thermoplastic resin material transparent to activating light energy radiation and which is softenable at a temperature ranging from 40.degree.-70.degree. C.