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: A set of artificial teeth allows for easy occlusion adjustment without high precision in arrangement. One of a pair of occluding upper and lower artificial molar teeth has convex adjustment surfaces which are formed of a spherical surface, a cylindrical surface or a conical surface on an occlusal surface thereof, and the other of the pair of artificial molar teeth has opposing surfaces which are formed of a flat surface, a spherical surface, a cylindrical surface or a conical surface in point contact or line contact with the adjustment surfaces on an occlusal surface thereof.

Abstract: The present invention is to provide a set of easily arranged artificial teeth in which shapes of abutment surfaces of adjacent artificial teeth are not varied. In the set of artificial teeth, at least two artificial teeth adjacent to each other in a mesial-distal direction respectively have highest contours, one of the highest contours on the adjacent sides is positioned on an occlusal surface side and a buccal surface side relative to the other, and the artificial teeth are abutted with each other at abutment positions between the highest contours of both the artificial teeth in the occlusal direction and the buccolingual direction. Parting lines of molds for forming the artificial teeth respectively pass through the highest contours.

Abstract: A chemicals mixing container 1 includes: a cylinder 8 having a tubular shaped outer tube 10, and an end wall 11 which seals one end of the outer tube 10 and in which an ejection hole 15 has preliminarily been formed or is formable and which has an inner wall surface swollen outward; an elastic partition wall 12 which is placed inside the outer tube 10 so as to be able to define a mixing chamber 5 within the cylinder 8, and which has such elasticity as to be swollen toward one side counter to the inner wall surface of the end wall 11; and an ejection auxiliary member 13 which is placed inside the outer tube 10 and outside the mixing chamber 5, and which has an end face swollen toward the mixing chamber 5 and moreover which is enabled to press the elastic partition wall 12 against the end wall 11. The chemicals mixing container 1 is enabled to reliably mix a liquid material 2 and a powder material 4 together and discharge a mixture 18 of the liquid material 2 and the powder material 4 without waste.

Abstract: A chemicals mixing container 1 of the invention, which allows two kinds of chemicals, a liquid material 2 and a powder material 4, to be stored therein in isolation from each other and which allows the liquid material 2 and the powder material 4 to be mixed together with reliability at a time of use, includes: a first cylinder 6; a first piston 7 which is fitted in the first cylinder 6 to define a first internal space 3; a second cylinder 8 which is connected to the first cylinder 6 or the first piston 7 so as to be rotationally slidable thereon; and a second piston 9 which is fitted in the second cylinder to define a second internal space 5.

Abstract: The invention provides artificial teeth arranged in plates attached 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 a 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 arranged in plates. The artificial teeth are arranged at an appropriate position according to an oral environment of each patient, without requiring advanced skills and experiences.

Abstract: Provided is an artificial anterior tooth capable of grinding the food. The lingual side of an artificial anterior is provided with a protuberance for forming a frictional surface dented in an arch shape as seen from the mesiodistal direction, and the labial side of an opposite artificial lower tooth is provided with a protuberance for forming a sliding surface abutting on the frictional surface and sliding on the frictional surface by sliding motion of upper and lower jaws.

Abstract: The invention provides artificial teeth arranged in plates 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, being applicable to various arrangement 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.

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 invention enables to arrange artificial molar teeth at appropriate positions according to the oral cavity environment of each patient without requiring advanced techniques or experiences. The invention relates to artificial molar teeth having maxillary molar teeth 1 to 4 and mandibular molar teeth 5 to 8 to be arranged so as to form a pair on denture bases 57, 58 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 1 to 4 and the mandibular molar teeth to 8 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: 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 33, 34 which are mounted in an oral cavity as a dental prosthetic appliance, an occlusal surfaces of the teeth 1, 2, 5, 6 are provided with side grooves 29 to 32 extending toward a buccal side or lingual side, and intersecting portions (tops 29a to 32a) of the side grooves 29 to 32 with the outer circumference of the occlusal surface, and a contact point 35 are formed on a plane parallel to the mesical distal direction. Or the teeth 1, 2, 5, 6 are configured such that the bottom ends of fossae 25, 27 on the occlusal surface and the contact point 35 are formed on a plane parallel to the mesical distal direction.

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 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 present invention relates to a tooth to be used in a jaw tooth model which allows students under dental training to experience oral works and therapeutic practices. More particularly, the present invention relates to a tooth to be used for experiencing morphological studies in the formation of an anchor tooth, the formation of a cavity and so on, particularly a tooth to be used in a jaw tooth model provided with standards for evaluating tooth formation, a method of producing the same, and an apparatus for confirming tooth formation to be used in a jaw tooth model which is provided with standards for evaluating tooth formation.

Abstract: An object of the present invention is to provide a tooth model capable of exhibiting grinding feel similar to that of a natural tooth, with which students aspiring to become dentists experience intraoral work and perform training related to a treatment, and also experience formation of an abutment tooth, formation of cavity or the like. A difference in the grinding feel between tooth enamel and dentin, which constitute a natural tooth, is reproduced by impregnating a sintered body formed integrally of an inorganic powder such as alumina with a thermosetting resin or a low melting point glass to form an enamel portion.

Abstract: A lock for orthodontic treatment comprises a holding member fixed to a molar band, and a spring wire having an end removably held by the holding member. The holding member is configured such that the end of the spring wire is held on the holding member by being moved axially along the holding member. One of the holding member and the spring wire has elasticity in a direction perpendicular to its axis. The holding member includes a first engagement portion for preventing the movement of the end of the spring wire in a mounting direction, and a second engagement portion for preventing the movement of the end of the spring wire in a removing direction. The spring wire includes a first locking portion for engaging with the first engagement portion of the holding member, and a second locking portion for engaging with the second engagement portion of the holding member.