Abstract: An artificial tooth where an occlusal surface is formed by grinding has a reference point that represents a position and an angle of the artificial tooth when an occlusal surface of the artificial tooth is obtained by an occlusal-surface form measuring apparatus. The reference point is a convexed spherical surface or a concaved spherical surface arranged on the occlusal-surface. The spherical surface has three or more reference points. The convexed spherical surface is fit to the concaved spherical surface when the maxillary artificial tooth and mandibular artificial tooth are occluded. The occluding portion of the artificial tooth has a grinding portion.

Abstract: A composite material including silanated filler and mixed polymerizable monomer, having a stable pasty property which keeps well and has a consistent usability. A composite material containing a silanated filler, a polymerizable monomer, and a polymerization initiator, and may be produced by a process which includes in order of a mixed polymerizable monomer preparing step, a mixed polymerizable monomer preserving step, a composite material preparing step, a composite material preserving step, a composite material filling step, and a small quantity preserving container preserving step.

Abstract: A composite material including silanated filler and mixed polymerizable monomer, having a stable pasty property which keeps well and has a consistent usability. A composite material containing a silanated filler, a polymerizable monomer, and a polymerization initiator, and may be produced by a process which includes a mixed polymerizable monomer preparing step, a silanation step, a silanated filler preserving step, a composite material preparing step, a composite material preserving step, a composite material filling step, and a small quantity preserving container preserving step.

Abstract: There is provided a dental composition comprising at least one kind of filler and resin matrix, wherein the at least one kind of filler comprises a population of particles, wherein the population of particles has an average particle size from 110 to 500 ?m, the maximum particle size of the population of particles is less than 1.4 times the average particle size, and the D30 of particle size distribution of the population of particles is no less than 0.9 times the average particle size.

Abstract: Occlusal-surface shape data and occlusal-surface position data of dentures are acquired on a dentist side, and the occlusal-surface shape data and the occlusal-surface position data are then transmitted to a grinding data provider side. Maxillomandibular occlusal state data is reproduced from the occlusal-surface shape data and the occlusal-surface position data on the grinding data provider side. A maxillomandibular occlusal adjustment portion is determined by changing a maxillomandibular occlusal vertical dimension on the grinding data provider side. Cutting data including the maxillomandibular occlusal adjustment portion and the occlusal-surface position data is prepared on the grinding data provider side, and the cutting data is transmitted to the dentist side. An occlusal adjustment is carried out on the dentist side by cutting the dentures by a grinding machine based on the cutting data.

Abstract: Artificial teeth are arranged in plates capable of being attached in an oral cavity as a dental prosthetic appliance, in which one or more linear arrangement direction indication parts showing the arrangement direction in the plates are provided on an occlusal plane of each of the molar teeth. At least one set of arrangement direction indication parts of the adjacent molar teeth is configured so as to extend generally in parallel direction. At least one set of arrangement direction indication parts of the antagonist upper molar teeth and lower molar teeth is configured so as to extend generally in parallel direction. The artificial molar teeth are arranged at an appropriate position according to the oral cavity environment of each patient, without requiring advanced skills and experiences, and are applicable to various arrangements of artificial teeth.

Abstract: An occlusal wear evaluation apparatus capable of evaluating quantitatively an occlusal wear of a used denture reads three dimensional data of a denture before use and three dimensional data of the denture after use. The apparatus calculates a difference in a set value of an articulator allowing the maxillary dental arch and the mandibular dental arch of the denture to occlude between the denture before use and the denture after use, by way of simulating movements of a jaw in the articulator with the three dimensional data of the denture before use and the three dimensional data of the denture after use, and indicates the calculated difference.

Abstract: The present invention relates to a tooth which is used in a dental arch model with which dental students can experience dental works in the oral cavity and practice treatments. More specifically, the present invention relates to a tooth composition for formation trainings such as abutment tooth formation and cavity preparation. Since conventionally used dental arch models have a grinding sensation different from a natural tooth, dental students having completed formation trainings such as abutment tooth formation and cavity preparation by using these conventional models are frequently puzzled to have different grinding and handling properties upon dental works in the oral cavity in practice. That is, these conventional dental arch models are largely different from a natural tooth in grinding sensation including slipperiness and easiness in grinding.

Abstract: The invention enables artificial molar teeth to be arranged at appropriate positions according to the oral cavity environment of each patient without requiring advanced techniques or experience. The artificial molar teeth have maxillary molar teeth and mandibular molar teeth arranged so as to form a pair on denture bases to be mounted on upper and lower jaws in an oral cavity, in which one cusp out of the cusps of the maxillary molar teeth and the mandibular molar teeth is engaged with a fossa of the antagonist, and at least one of the other cusps is engaged with a groove of the antagonist.

Abstract: Maxillary molar teeth and mandibular molar teeth are formed so as to be different in intersection angles (vertical line angles) between vertical lines extending in a vertical direction to occlusal facets and occlusal planes. That is, the maxillary molar teeth and the mandibular molar teeth are formed so as to be different in intersection angles of vertical lines of the protrusive occlusal facet and retrusive occlusal facet respectively. The occlusal facets of at least one of buccal cusps of the maxillary molar teeth and lingual cusps of the mandibular molar teeth are designed so that at least one of the width in the mesiodistal direction and the width in the cuspal-cervical direction is smaller than the occlusal facets of the opposite cusps of the antagonist molar teeth.

Abstract: Artificial teeth arranged in plates attachable in an oral cavity as a dental prosthetic appliance, in which arrangement direction indication parts showing a directivity of arrangement in the plates extending in an apical-cervical direction or in a mesiodistal direction are provided at a vestibular side or an oral side. The arrangement direction indication parts extending in the apical-cervical direction are positioned linearly as seen from the vestibular side in an occluded state of mandibular teeth and maxillary teeth. The arrangement direction indication parts extending in the mesiodistal direction are positioned linearly as seen from the vestibular side in the state in which the teeth are arranged in the plates. The artificial teeth are arranged at an appropriate position according to an oral environment of each patient, without requiring advanced skill and experience.

Abstract: The invention enables to arrange teeth at appropriate positions depending on the oral cavity environment of each patient without requiring advanced techniques or experiments. In artificial molar teeth to be arranged on bases which are mounted in an oral cavity as a dental prosthetic appliance, an occlusal surfaces of the teeth are provided with side grooves extending toward a buccal side or lingual side, and intersecting portions (tops) of the side grooves with the outer circumference of the occlusal surface, and a contact point are formed on a plane parallel to the mesial distal direction. Or the teeth are configured such that the bottom ends of fossae on the occlusal surface and the contact point are formed on a plane parallel to the mesial distal direction. Alternatively, mutually parallel flat frictional contact portions are provided around cusps mutually contacting with the maxillary molar teeth and the mandibular molar teeth, respectively.

Abstract: A denture grinding machine includes: a denture-holding table for holding dentures; a grinding tool for grinding the dentures held on the denture-holding table; a main body for holding the grinding tool; a moving mechanism for causing relative movement between the denture-holding table and the main body; and a driving mechanism for relatively driving the main body and the denture-holding table. The moving mechanism moves relatively the denture-holding table and the main body in three-dimensional coordinate directions based on grinding portion data, and the grinding tool performs grinding of the denture occlusal surface from a direction perpendicular to the occlusal surface.

Abstract: The invention enables artificial molar teeth to be arranged at appropriate positions according to the oral cavity environment of each patient without requiring advanced techniques or experience. The artificial molar teeth have maxillary molar teeth and mandibular molar teeth arranged so as to form a pair on denture bases to be mounted on upper and lower jaws in an oral cavity, in which one cusp out of the cusps of the maxillary molar teeth and the mandibular molar teeth is engaged with a fossa of the antagonist, and at least one of the other cusps is engaged with a groove of the antagonist.

Abstract: There is provided a storage container for a dental adhesive that allows a stable dropping operation during use of a dental adhesive and smooth fine dropping work such as strict control of an amount of drops with high reproducibility, and can prevent expansion of an adhesive stored in the storage container caused by a temperature increase. A storage container for a dental adhesive is used, including a cylindrical container portion that can store a liquid such as an adhesive therein, wherein one end surface of the container portion has a discharge port communicating with an outside, the other end surface of the container portion is closed by a bottom wall, and a tail portion is formed protruding from the bottom wall to the side opposite from the discharge port.

Abstract: The present invention relates to a tooth which is used in a dental arch model with which dental students can experience dental works in the oral cavity and practice treatments. More specifically, the present invention relates to a tooth composition for formation trainings such as abutment tooth formation and cavity preparation. Since conventionally used dental arch models have a grinding sensation different from a natural tooth, dental students having completed formation trainings such as abutment tooth formation and cavity preparation by using these conventional models are frequently puzzled to have different grinding and handling properties upon dental works in the oral cavity in practice. That is, these conventional dental arch models are largely different from a natural tooth in grinding sensation including slipperiness and easiness in grinding.

Abstract: An artificial tooth where an occlusal surface is formed by grinding has a reference point that represents a position and an angle of the artificial tooth when an occlusal surface of the artificial tooth is obtained by an occlusal-surface form measuring apparatus. The reference point is a convexed spherical surface or a concaved spherical surface arranged on the occlusal-surface. The spherical surface is 3 or more. The convexed spherical surface is fit to the concaved spherical surface when the maxillary artificial tooth and mandibular artificial tooth are occluded. The occluding portion of the artificial tooth has a grinding portion.

Abstract: Artificial teeth arranged in plates attachable in an oral cavity as a dental prosthetic appliance, in which arrangement direction indication parts showing a directivity of arrangement in the plates extending in an apical-cervical direction or in a mesiodistal direction are provided at a vestibular side or an oral side. The arrangement direction indication parts extending in the apical-cervical direction are positioned linearly as seen from the vestibular side in an occluded state of mandibular teeth and maxillary teeth. The arrangement direction indication parts extending in the mesiodistal direction are positioned linearly as seen from the vestibular side in the state in which the teeth are arranged in the plates. The artificial teeth are arranged at an appropriate position according to an oral environment of each patient, without requiring advanced skill and experience.

Abstract: Artificial teeth are arranged in plates capable of being attached in an oral cavity as a dental prosthetic appliance, in which one or more linear arrangement direction indication parts showing the arrangement direction in the plates are provided on an occlusal plane of each of the molar teeth. At least one set of arrangement direction indication parts of the adjacent molar teeth is configured so as to extend generally in parallel direction. At least one set of arrangement direction indication parts of the antagonist upper molar teeth and lower molar teeth is configured so as to extend generally in parallel direction. The artificial molar teeth are arranged at an appropriate position according to the oral cavity environment of each patient, without requiring advanced skills and experiences, and are applicable to various arrangements of artificial teeth.

Abstract: In a set of artificial teeth, at least one of mutually adjacent artificial anterior teeth includes abutting faces which contacts linearly with the other one so as to form abutting lines and capable of continuously moving the positions of the linear contact, the abutting faces being formed of any one of circular columnar surface, elliptical columnar surface, and conical surface.