Demonstration instrument and demonstration method

Abstract

To provide a demonstration instrument and demonstration method allowing an operator to stably create a defect and / or cavity at any position of an artificial tooth, and to observe a restored portion from a plurality of directions after restoring the artificial tooth having the defect and / or cavity with a dental filling composite resin.SOLUTION: An instrument for demonstrating filling and hardening a dental filling composite resin in a defect and / or cavity of an artificial tooth, the demonstration instrument comprises: an artificial tooth (1) including an artificial tooth (1a) having a defect and / or cavity; and a structure (2) for supporting the artificial tooth (1), where the structure (2) supporting the artificial tooth (1) is connected to the artificial tooth (1) and the angle of the artificial tooth (1) is changeable.SELECTED DRAWING: None

Description

[Technical Field]

[0001] The present invention relates to a demonstration apparatus and a demonstration method. [Background technology]

[0002] Dental caries is caused by acid produced by bacteria that demineralizes tooth tissue. Treatment for caries-affected teeth involves mechanically removing the decayed area, filling the removed area with dental composite resin, and allowing it to harden.

[0003] The success and difficulty of treatment vary greatly depending on the color tone of the dental composite resin for filling and the feel when pushing the dental composite resin for filling from the syringe, and it is known that the dental composite resins for filling sold by different companies vary in color tone and feel when used. For this reason, before purchasing a dental composite resin for filling from a different company, dentists, dental hygienists, and other dental professionals sometimes conduct a demonstration to check the color tone by filling a sample of the dental composite resin for filling, for example, into a molar with a cavity on the occlusal surface and allowing it to harden (Patent Document 1). [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Patent Publication No. 2019-211704 Summary of the Invention [Problem to be solved by the invention]

[0005] Cavities actually occur in a variety of locations, including the occlusal surface, buccal surface, and labial surface. External physical impacts can also cause various cracks in various locations on teeth. Dental professionals have had no way to actually verify the performance of dental composite resin fillings before purchasing them, such as whether the color of the composite resin matches the defects and / or cavities in various locations, whether its morphological stability is satisfactory, and whether the syringe feels comfortable to use. Furthermore, conventional demonstrations typically use molars with flat root surfaces and cavities on the occlusal surface. Surfaces other than the root surface are uneven, mimicking the shape of normal teeth, making them unstable when used as the base. This raises concerns about the safety of creating defects or cavities on surfaces other than the occlusal surface, and also makes it difficult to observe the restoration site.

[0006] The problem that the present invention aims to solve is to provide a demonstration instrument and a demonstration method that can stably create a defect and / or cavity at any location on an artificial tooth, and that can observe the repaired area from multiple directions after repairing an artificial tooth with a defect and / or cavity using a dental filling composite resin. [Means for solving the problem]

[0007] As a result of extensive research, the present inventors have found that a certain demonstration device and demonstration method can solve some or all of the above problems.

[0008] The present disclosure provides the following: (Item 1) An instrument for demonstrating filling and hardening of dental composite resin into missing and / or cavity of artificial teeth, An artificial tooth (1) including an artificial tooth (1a) having a defect and / or a cavity, and A structure (2) for supporting an artificial tooth (1), The structure (2) supporting the artificial tooth (1) is connected to the artificial tooth (1), The angle of the artificial tooth (1) can be changed. Demonstration equipment. (Item 2) Item 2. The demonstration instrument according to item 1, wherein the artificial teeth (1) are two or more types selected from a central incisor, a lateral incisor, a canine, a first premolar, a second premolar, a first molar, a second molar, a third molar, a deciduous central incisor, a deciduous lateral incisor, a deciduous canine, a first deciduous molar, and a second deciduous molar. (Item 3) Assuming that the angle of any one artificial tooth connected to the structure (2) supporting the artificial tooth (1) when the buccal or labial surface of the artificial tooth is perpendicular to the horizontal plane is 0° vertically and 0° horizontally, the angle of any one artificial tooth can be changed to two or more angles, including 0° vertically and 0° horizontally and other angles, and the other angles are angles under the following conditions: (If any one tooth is on the labial surface) Vertical: -140° or more and less than 0°, or more than 0° and less than 140° Horizontal: -140° or more and 140° or less (If any one tooth is on the right buccal surface) Vertical: -140° or more and less than 0°, or more than 0° and less than 140° Horizontal: -50° or more and 230° or less (If any one tooth is on the left buccal surface) Vertical: -140° or more and less than 0°, or more than 0° and less than 140° Horizontal: -230° or more and 50° or less (Item 4) 3. The demonstration instrument according to item 1 or 2, wherein the defect and / or cavity is positioned so that it can be observed perpendicularly from two or more surfaces selected from the occlusal surface, buccal surface, and labial surface of the artificial tooth. (Item 5) A demonstration method for filling and hardening a dental filling composite resin into a defect and / or cavity of an artificial tooth, An artificial tooth (1) including an artificial tooth (1a) having a defect and / or a cavity, and A structure (2) for supporting an artificial tooth (1), The structure (2) supporting the artificial tooth (1) is connected to the artificial tooth (1), The angle of the artificial tooth (1) can be changed, and the demonstration method includes a step of filling the defect and / or cavity of the demonstration instrument with dental filling composite resin, hardening it, and obtaining a restored artificial tooth. [Effects of the Invention]

[0009] The demonstration instrument and demonstration method of the present disclosure make it easy to create defects and cavities in various locations on an artificial tooth, and to easily observe the restored locations. [Brief explanation of the drawings]

[0010] [Figure 1] A cavity was created in part of a molar (an artificial tooth) (surrounded by a black line), and dental composite resin was filled and hardened. (The graph paper side is horizontal.) [Figure 2] The image shows the artificial teeth, a central incisor and a part of a canine (area surrounded by a black line), after being filled with dental composite resin and hardened. [Figure 3] A partial defect was created in the molar and canine artificial teeth (areas surrounded by black lines), and dental composite resin was filled and hardened. [Figure 4] A partial defect was created in the molar and canine artificial teeth (areas surrounded by black lines), and dental composite resin was filled and hardened. DETAILED DESCRIPTION OF THE INVENTION

[0011] Throughout this disclosure, the range of values for each physical property, content, etc. may be set as appropriate (e.g., by selecting from the upper and lower limit values described in each item below). Specifically, for the value φ, if A1, A2, A3, etc. are exemplified as the lower limit of the value φ and B1, B2, B3, etc. are exemplified as the upper limit of the value φ, the range of the value φ is exemplified as A1 or more, A2 or more, A3 or more, B1 or less, B2 or less, B3 or less, A1 to B1, A1 to B2, A1 to B3, A2 to B1, A2 to B2, A2 to B3, A3 to B1, A3 to B2, A3 to B3, etc. In addition, in this disclosure, the symbol "to" is used to mean that the values before and after it are included as the lower and upper limit values. The demonstration apparatus and demonstration method provided in this disclosure will be described in detail below.

[0012] <Artificial teeth (1)> The artificial tooth (1) is not limited as long as it is similar to natural teeth in at least one of color, shape, and texture. The artificial tooth (1) is preferably similar to natural teeth in color and shape, and more preferably similar to natural teeth in color, shape, and texture.

[0013] Examples of the color of the artificial tooth (1) include one selected from A1, A2, A3, A3.5, A4, B1, B2, B3, B4, C1, C2, C3, C4, D1, D2, D3, D4, and colors similar thereto. The color of one artificial tooth (1) does not need to be a single color, and may have a gradation. The colors of two or more artificial teeth (1) coupled to the structure (2) supporting the artificial teeth (1) may be the same or different.

[0014] The artificial teeth (1) may be adult teeth or baby teeth. When there are multiple artificial teeth (1) to be bonded to the structure (2) supporting the artificial teeth (1), each artificial tooth (1) is preferably of two or more different shapes, more preferably of two or more types selected from a central incisor, a lateral incisor, a canine, a first premolar, a second premolar, a first molar, a second molar, a third molar, a baby central incisor, a baby lateral incisor, a baby canine, a first baby molar, and a second baby molar.

[0015] Examples of upper limits for the number of artificial teeth (1) coupled to the structure (2) supporting the artificial teeth (1) include 50, 45, 40, 35, 34, 33, 32, 31, 30, 25, 20, 15, 10, 5, 4, 3, and 2 teeth, and examples of lower limits include 45, 40, 35, 34, 33, 32, 31, 30, 25, 20, 15, 10, 5, 4, 3, 2, and 1 tooth. In one embodiment, the number of artificial teeth (1) coupled to the structure (2) supporting the artificial teeth (1) is preferably one or more. When the number of artificial teeth (1) coupled to the structure (2) supporting the artificial teeth (1) is two or more, there may or may not be a space between the teeth.

[0016] When there are two or more artificial teeth (1) to be coupled with the structure (2) supporting the artificial teeth (1), the shape of the row of teeth is not particularly limited. When the x-axis represents the left-right axis of the tooth as viewed from the occlusal surface side of any one tooth, the y-axis represents the front-to-back axis, and the z-axis represents the depth axis, examples of the shape of the row of teeth include a shape aligned along the x-axis, a shape aligned along the y-axis, a shape in which at least some of the teeth in the row of teeth aligned on the x-axis are shifted to the z-axis and / or y-axis, a shape in which at least some of the teeth in the row of teeth aligned on the y-axis are shifted to the z-axis and / or x-axis, a shape identical to the natural row of teeth, and a shape similar to the natural row of teeth in which some of the teeth are shifted to one or more axes selected from the x-axis, y-axis, and z-axis.

[0017] At least one of the artificial teeth (1) has a defect and / or a cavity. The defect and / or cavity may be created by a customer who is a participant of the demonstration (also referred to simply as a "participant" in this disclosure), or by a seller who is a provider of the demonstration (also referred to simply as a "provider" in this disclosure). Examples of upper limits for the ratio of the number of artificial teeth (1a) having defects and / or cavities (artificial teeth (1a) having defects and / or cavities / artificial teeth (1)) are 100, 95, 90, 85, 80, 75, 70, 65, 60, 55, 50, 45, 40, 35, 30, 25, 20, 15, 10, 5%, etc., and examples of lower limits are 95, 90, 85, 80, 75, 70, 65, 60, 55, 50, 45, 40, 35, 30, 25, 20, 15, 10, 5, 1%, etc. In this disclosure, "cavity" refers to anything in the shape of a cavity in general, and "defect" includes not only cracks in the tooth but also thinning of the tooth. Examples of upper limits for the number of artificial teeth (1a) having defects and / or cavities include 20, 18, 16, 14, 12, 10, 8, 6, 4, and 2 teeth, while examples of lower limits include 18, 16, 14, 12, 10, 8, 6, 4, 2, and 1 tooth. In one embodiment, the number of artificial teeth (1a) having defects and / or cavities is preferably 1 to 20. Since the demonstration instrument of the present disclosure can be adjusted to multiple angles, it is preferable to create defects and / or cavities in different artificial teeth, fill them with dental filling composite resin, and demonstrate the hardened state as a demonstration, thereby demonstrating that dental filling composite resin can be used in various cases in a single demonstration. From this perspective, the number of artificial teeth (1a) having defects and / or cavities is more preferably 2 to 20. From the same viewpoint as above, the types of artificial teeth (1a) having defects and / or cavities are preferably one or more selected from central incisors, lateral incisors, canines, deciduous central incisors, deciduous lateral incisors, and deciduous canines, and one or more selected from first premolars, second premolars, first molars, second molars, third molars, first deciduous molars, and second deciduous molars.

[0018] Examples of defects and / or cavities that may be provided in the artificial teeth of the present disclosure include fractures in the crown, and one or more, two or more, or three or more types selected from Class I cavities, Class II cavities, Class III cavities, Class IV cavities, Class V cavities, and Class VI cavities.

[0019] The upper limit of the cavity depth ratio of the artificial tooth (1a) (cavity depth / length of the artificial tooth (1a)) is 50, 45, 40, 35, 30, 25, 20, 15, 10, 5%, etc., and the lower limit is 45, 40, 35, 30, 25, 20, 15, 10, 5, 1%, etc. In one embodiment, the cavity depth ratio of the artificial tooth (1a) (cavity depth / length of the artificial tooth (1a)) is preferably 1 to 50%. The upper limit of the cavity depth of the artificial tooth (1a) is 10, 9, 8, 7, 6, 5, 4, 3, 2, 1 mm, etc., and the lower limit is 9, 8, 7, 6, 5, 4, 3, 2, 1, 0.5 mm, etc., and the like. In one embodiment, the depth of the cavity of the artificial tooth (1a) is preferably 0.5 to 10 mm, more preferably 1 to 3 mm.

[0020] The upper limit of the ratio of the surface area of the cavity of the artificial tooth (1a) (surface area of the cavity / total surface area of the surface having the cavity) is 60, 55, 50, 45, 40, 35, 30, 25, 20, 15, 10, 5, 1%, etc., and the lower limit is 55, 50, 45, 40, 35, 30, 25, 20, 15, 10, 5, 1, 0.5%, etc. In one embodiment, the ratio of the surface area of the cavity of the artificial tooth (1a) (surface area of the cavity / total surface area of the surface having the cavity) is preferably 0.5 to 60%. The upper limit of the diameter of the cavity surface of the artificial tooth (1a) is 10, 9, 8, 7, 6, 5, 4, 3, 2, 1 mm, etc., and the lower limit is 9, 8, 7, 6, 5, 4, 3, 2, 1, 0.5 mm, etc., and the lower limit is 10, 9, 8, 7, 6, 5, 4, 3, 2, 1, 0.5 mm, etc. In one embodiment, the diameter of the cavity surface of the artificial tooth (1a) is preferably 1 to 4 mm.

[0021] Examples of upper limits for the percentage of missing tooth (1a) (missing volume / pre-missing volume of artificial tooth) are 50, 45, 40, 35, 30, 25, 20, 15, 10, and 5%, and examples of lower limits are 45, 40, 35, 30, 25, 20, 15, 10, 5, and 1%. In one embodiment, the percentage of missing tooth (1a) (missing volume / pre-missing volume of artificial tooth) is preferably 50% or less. If the percentage of missing tooth (1a) is too high, it is likely that a single restoration will take a long time. Since it is important that a demonstration be conducted in a relatively short time and in an easy-to-understand manner, it is preferable that the percentage of missing tooth (1a) (missing volume / pre-missing volume of artificial tooth) is not too high.

[0022] Examples of methods for forming a defect and / or cavity in the artificial tooth (1a) include chemical methods and physical methods. An example of a chemical method is a method in which a liquid that dissolves the artificial tooth (1a) is applied to a desired location on the artificial tooth (1a). Examples of physical methods include a method using a rotary cutting tool (such as a handpiece), a method using a drill, or a method using a cutting tool (such as pliers, scissors, a knife, or nail clippers). The handpiece may be a micromotor or an air turbine. Furthermore, either a contra-angle handpiece or a straight handpiece may be used depending on the location where the defect and / or cavity is to be formed.

[0023] The artificial tooth (1) of the present disclosure may be provided with a structure or pattern resembling one or more selected from dental caries, tartar, and plaque.

[0024] The components of the artificial tooth (1) are not particularly limited as long as they are components used in the manufacture of conventional artificial teeth. Examples of components that make up the artificial tooth (1) include gold-silver-palladium alloys, resins, zirconia, and ceramics. Examples of additives that can be added to these components include fluorescent agents. When fluorescent agents are contained in both the artificial tooth (1) and the dental filling composite resin, it is preferable that they have different fluorescent colors.

[0025] <Structure (2) that supports artificial teeth (1)> The structure (2) supporting the artificial tooth (1) (also referred to simply as the "support structure" in this disclosure) is not particularly limited as long as it is bonded to the artificial tooth (1). When bonding, at least the crown portion of the artificial tooth (1) must be exposed, and both the crown portion and the root portion may be exposed. If the root portion is exposed, the upper limit of the exposed area may be 100, 90, 80, 70, 60, 50, 40, 30, 20, or 10%, and the lower limit may be 90, 80, 70, 60, 50, 40, 30, 20, 10, or 0%. If two or more teeth are bonded to the structure (2) supporting the artificial tooth (1), the exposed percentage of the root portion may vary from tooth to tooth. In this disclosure, the crown portion is considered to be exposed even if it has a structure or pattern resembling one or more of caries, tartar, and plaque, and the surface of the crown is not directly exposed.

[0026] Examples of the shape of the support structure include one or more types selected from a plate-like structure, a rod-like structure, and a bowl-like structure. A plurality of support structures may be provided for each artificial tooth (1) of the present disclosure. For example, two plate-like structures may be prepared and fixed so as to sandwich one artificial tooth (1). Other examples of support structures include a structure having a plate-like structure and a bowl-like structure, i.e., a support structure having a bowl-like structure shaped to fix the root portion of the artificial tooth (1) on a plate-like structure. A specific example of a support structure is a gingiva-like structure. When creating a defect and / or cavity in the artificial tooth (1), the instrument used to create the defect and / or cavity may vibrate violently or require delicate manipulation. Even when using such instruments, the support structure can stably create a defect and / or cavity in the artificial tooth (1). Therefore, the support structure is preferably one or more types selected from a plate-like structure and a bowl-like structure, more preferably a structure having a plate-like structure and a bowl-like structure, and even more preferably a gingiva-like structure.

[0027] The artificial tooth (1) of the present disclosure is bonded to a support structure. In the present disclosure, "bonded" may be either fixedly bonded or operatively bonded. In the present disclosure, "fixedly bonded" means that the artificial tooth (1) and the structure (2) supporting the artificial tooth (1) cannot be moved in different directions. In the present disclosure, "operatively bonded" means that the artificial tooth (1) and the structure (2) supporting the artificial tooth (1) can be moved in different directions. Examples of bonding methods include chemical bonding and physical bonding. Examples of chemical bonding methods include bonding using an adhesive and / or pressure-sensitive adhesive (including double-sided tape), and pouring and hardening a resin into a mold shaped to fit the artificial tooth (1) and the support structure together. Examples of physical bonding methods include bonding with a hook-and-loop fastener, fitting the root of the artificial tooth (1) into a support structure having a structure that matches the shape of the root of the artificial tooth (1), sticking the artificial tooth (1) having a thumbtack-like structure into a support structure (like sticking a thumbtack into a wall), sticking the artificial tooth (1) into a support structure having a pin-holder-like structure (like sticking a flower into a pin-holder), bonding with a magnet, bonding with a screw-like structure, bonding with a hook-like structure, bonding with a latch-like structure, etc. The thumbtack-like structure may be the shape of the root of a natural tooth.

[0028] The color of the support structure is not particularly limited, but is preferably a color different from that of the artificial teeth, and more preferably a gum color.

[0029] The angle between the artificial tooth (1) and the support structure is preferably the angle between the line (tooth axis) passing through the artificial tooth (1) and the support structure at the connection point and the horizontal plane. The angle between the artificial tooth and the support structure may be an angle tailored to the actual case. The upper limit of the angle of the tooth axis of the artificial tooth with respect to the horizontal plane when the artificial tooth (1) is connected to the support structure is 360°, 350°, 340°, 330°, 320°, 310°, 300°, 290°, 280°, 270°, 260°, 250°, 240°, 230°, 220°, 210°, 200°, 190°, 180°, 170°, 160°, 150°, 140°, 130°, 120°, 110°, 100°, 90°, 80°, 70°, 60°, 50°, 40°. , 30°, 20°, 10°, etc., with the lower limit being 350°, 340°, 330°, 320°, 310°, 300°, 290°, 280°, 270°, 260°, 250°, 240°, 230°, 220°, 210°, 200°, 190°, 180°, 170°, 160°, 150°, 140°, 130°, 120°, 110°, 100°, 90°, 80°, 70°, 60°, 50°, 40°, 30°, 20°, 10°, 0°, etc. In one embodiment, the angle of the tooth axis of the artificial tooth with respect to the horizontal plane when the artificial tooth is coupled to the support structure is preferably 0 to 360°.

[0030] The artificial tooth (1) and the supporting structure may have the same structure as a dental arch model or a jaw model.

[0031] <About the possibility of changing the angle of artificial teeth (1)> The "changeable" in "the angle of the artificial tooth (1) is changeable" means that the angle of the artificial tooth (1) can be changed by adjusting the position and / or orientation of one or more of the artificial tooth (1), the support structure, and the structure (3) described in detail below so that the artificial tooth (1) faces a specific angle. After the adjustment, the artificial tooth (1) is positioned so that it stands on its own and does not wobble when released. Therefore, for example, an artificial tooth with only a flat root side (but without a support structure as defined in this disclosure) cannot be considered to have a changeable angle because the other surfaces are uneven and unstable. Furthermore, as a further condition for satisfying the "changeable angle of the artificial tooth (1)," it is also necessary that at least one defect and / or cavity in the artificial tooth (1) can be observed from a specific viewpoint at each angle of the artificial tooth (1). Specifically, when the viewpoint is at a 45° angle relative to the artificial tooth (1), at least one defect and / or cavity must be observable at both angles of the artificial tooth (1)—vertical 0°, horizontal 0°, and vertical 90°, horizontal 0°. This is preferable because it allows the participant to easily observe the demonstration at any angle. In this disclosure, since the angle of the artificial tooth (1) is variable, the artificial tooth (1) can naturally be oriented at two or more angles. In this disclosure, two or more angles refer to angles of vertical 0°, horizontal 0°, and other angles, assuming that the angle of any one artificial tooth (1) when the buccal or labial surface of the artificial tooth (1) attached to the structure (2) supporting the artificial tooth (1) is perpendicular to the horizontal plane. In this disclosure, the "vertical" of the artificial tooth refers to the direction parallel to the general orientation of the tooth root, as viewed from the buccal or labial surface. In this disclosure, the "horizontal" of an artificial tooth refers to the direction perpendicular to the general orientation of a tooth root, as viewed from the buccal or labial surface. The vertical and horizontal angles of 0° refer to angles such as those shown in Figure 1 of this disclosure. The graph paper shown in the figures of this disclosure is a horizontal plane.

[0032] In the present disclosure, the upper limit of the vertical angle of "other angles" is 230°, 220°, 210°, 200°, 190°, 180°, 170°, 160°, 150°, 140°, 135°, 130°, 120°, 110°, 100°, 90°, 80°, 70°, 60°, 50°, 45°, 40°, 30°, 20°, 10°, 0°, -10°, -20°, -30°, -40°, -50°, -60°, -70°, -80°, -90°, -100°, -110°, -120°, -130°, -140°, -150°, -160°, -170°, -180°, -190°, -200°, -210°, - Examples include 220°, and the lower limit is 220°, 210°, 200°, 190°, 180°, 170°, 160°, 150°, 140°, 135°, 130°, 120°, 110°, 100°, 90°, 80°, 70°, 60°, 50°, 45°, 40°, 30°, 20°, 10°, 0°, -10°. Examples of vertical angles include -20°, -30°, -40°, -50°, -60°, -70°, -80°, -90°, -100°, -110°, -120°, -130°, -140°, -150°, -160°, -170°, -180°, -190°, -200°, -210°, -220°, and -230°. In one embodiment, vertical angles other than these angles are preferably -230° to 230°, more preferably not less than -230° and less than 0°, or more than 0° and not more than 230°, and even more preferably not less than -140° and less than 0°, or more than 0° and not more than 140°.In the present disclosure, the upper limit of the horizontal angle of "other angles" is 230°, 220°, 210°, 200°, 190°, 180°, 170°, 160°, 150°, 140°, 135°, 130°, 120°, 110°, 100°, 90°, 80°, 70°, 60°, 50°, 45°, 40°, 30°, 20°, 10°, 0°, -10°, -20°, -30°, -40°, -50°, -60°, -70°, -80°, -90°, -100°, -110°, -120°, -130°, -140°, -150°, -160°, -170°, -180°, -190°, -200°, -210°, - Examples include 220°, and the lower limit is 220°, 210°, 200°, 190°, 180°, 170°, 160°, 150°, 140°, 135°, 130°, 120°, 110°, 100°, 90°, 80°, 70°, 60°, 50°, 45°, 40°, 30°, 20°, 10°, 0°, -10°. Examples of angles include -20°, -30°, -40°, -50°, -60°, -70°, -80°, -90°, -100°, -110°, -120°, -130°, -140°, -150°, -160°, -170°, -180°, -190°, -200°, -210°, -220°, and -230°. In one embodiment, other angles are preferably angles under the following conditions: (If any one tooth is on the labial surface) Vertical: -140° or more and less than 0°, or more than 0° and less than 140° Horizontal: -140° or more and 140° or less (If any one tooth is on the right buccal surface) Vertical: -140° or more and less than 0°, or more than 0° and less than 140° Horizontal: -50° or more and 230° or less (If any one tooth is on the left buccal surface) Vertical: -140° or more and less than 0°, or more than 0° and less than 140° Horizontal: -230° or more and 50° or less Other angles are more preferably angles that satisfy the following conditions. (If any one tooth is on the labial surface) Vertical: 90° Horizontal: 0° (If any one tooth is on the right buccal surface) Vertical: 90° Horizontal: 0° (If any one tooth is on the left buccal surface) Vertical: 90° Horizontal: 0° Other angles may be angles at which the entirety of one or more surfaces selected from the labial surface, buccal surface, and occlusal surface, which are difficult to see at angles of 0° vertical and 0° horizontal, can be seen. This makes it easier to create defects and / or cavities not only on the occlusal surface but also on the buccal or labial surface, and also makes it easier to observe. A "positive" vertical angle refers to the angle when the artificial tooth is attached to an individual and rotated backward. A "negative" vertical angle refers to the angle when the artificial tooth is attached to an individual and rotated forward. A "positive" horizontal angle refers to the angle when rotated counterclockwise when viewed from the occlusal surface. A "negative" horizontal angle refers to the angle when rotated clockwise when viewed from the occlusal surface. Figure 2 of the present disclosure illustrates a case where any one tooth is located on the labial surface, with vertical: 90° and horizontal: 0°. Figure 3 of the present disclosure illustrates a case where any one tooth is located on the right buccal surface, with vertical: 90° and horizontal: 0°. Figure 4 of the present disclosure illustrates a case where any one tooth is located on the left buccal surface, with vertical: 90° and horizontal: 0°.

[0033] As a method for making the angle of the artificial tooth (1) changeable, the following methods (α) to (δ) are exemplified. (α) Creating a support structure in a specific shape (β) Providing a further structure (3) that is connected to the support structure at a location other than the connection point with the artificial tooth (1), and adjusting the angle with the structure (3). (γ) Providing a structure (3) and a structure (4) for connecting the two, which is attached to one or more selected from an artificial tooth and a support structure. (δ) operatively connecting the artificial tooth (1) with the support structure; An example of (α) is to provide a plurality of flat surfaces on the support structure, and to arrange each flat surface as a bottom surface. An example of (β) is to provide a structure (3) such as a vise or clamp, connect it to a support structure, and adjust the angle with the vise or clamp (β-1). Examples of (γ) include (γ-1) in which a structure (4) (e.g., a magnet, etc.) is attached to two or more selected from an artificial tooth, a supporting structure, and a structure (3), and they are allowed to interact with each other at an arbitrary angle and bonded to each other; and (γ-2) in which a structure (4) (e.g., a magnet, etc.) is attached to one or more selected from an artificial tooth, a supporting structure, and a structure (3), and the material constituting one or more selected from an artificial tooth, a supporting structure, and a structure (3) to which the structure (4) is not attached is changed to a material that interacts with the structure (4) (e.g., a metal, etc.), and they are bonded to each other at an arbitrary angle. A specific example of (γ) is attaching a magnet to the artificial tooth (1) and / or the supporting structure, and magnetically attaching it to a hemisphere (structure (3)) made of iron, thereby changing the angle of the artificial tooth (1). Examples of the structure (4) include hook-and-loop fasteners, combinations of an insert structure (rod-shaped structure) and an insertable structure (hole-shaped structure) (snap buttons, combinations of screws and screw holes, etc.). As an example of (δ), a movable structure may be provided at the connection point between the artificial tooth (1) and the support structure. Among (α) to (δ), (α) or (γ) is preferred from the viewpoint that a surgical field is secured to create a defect and / or cavity in the artificial tooth and a field of view is easily secured when observing. The ability to change the angle of the artificial tooth (1) in this way not only solves the above-mentioned problems, but also makes it possible to reproduce the angles used in actual practice, for example, the angle when a person sits on the dental chair unit and the angle when the backrest is reclined, which is preferable because it allows comprehensive confirmation of the requirements of dental professionals.

[0034] <Other structures> The demonstration device of the present disclosure may have structures other than those detailed above around it, as long as they do not interfere with ease of observation or the ease of creating cavities or defects. Examples of other structures include structures for reproducing the inside of the oral cavity or its surroundings. From the standpoint of ease of observation and the ease of creating cavities or defects, it is preferable that no structures be provided vertically on the occlusal surface, buccal surface, or labial surface of the artificial tooth (1).

[0035] <Dental filling composite resin> Any conventionally known dental filling composite resin can be used without particular limitation. Dental filling composite resins characterized by high color matching are particularly preferred because they can be filled and cured into defects and / or cavities in various locations to demonstrate that natural tooth restoration with high color matching is possible in any location. In this disclosure, "high color matching" and "good color matching" refer to a state in which a considerable degree of visual attention is required to visually distinguish the hardened dental filling composite resin from a natural tooth. Furthermore, if the artificial teeth of the demonstration appliance to be restored are composed of multiple different color tones (e.g., two or more selected from A1 to D4), filling and curing the defects and / or cavities of those artificial teeth with dental filling composite resins to demonstrate their ability to match multiple color tones is a preferred example, as it demonstrates high color matching.

[0036] <Demonstration> In this disclosure, a demonstration refers to a performance for the purpose of showing it to others. Therefore, the form of the performance is not particularly limited, and the performance may be performed via the Internet, in front of an audience, or as a recorded video.

[0037] <Demonstration method> This disclosure provides a demonstration method for filling and curing a dental filling composite resin into a missing tooth and / or cavity in an artificial tooth. As a demonstration of this disclosure, (1) an artificial tooth (1) including an artificial tooth (1a) having a defect and / or a cavity; and A structure (2) for supporting an artificial tooth (1), The structure (2) supporting the artificial tooth (1) is connected to the artificial tooth (1), The angle of the artificial tooth (1) can be changed. providing a caries structure and / or pattern on the artificial tooth (1) of the demonstration appliance; (2) a process of removing the carious structure and / or pattern; (3) A process of applying a primer or adhesive to the scraped area; (4) A process of filling the scraped area with dental filling composite resin. (5) photocuring the filled dental filling composite resin; (6) A process to check the area restored with dental composite resin fillings. is exemplified. (1) to (2) may be performed by the provider before the demonstration. (3) does not need to be implemented, The demonstration method of the present disclosure only needs to implement at least (4) and (5). (6) If the dental composite resin for filling and / or the artificial tooth contains a fluorescent agent, the fluorescent agent may be made to emit light to emphasize the difference in color between the dental composite resin for filling and the artificial tooth. From the above, the demonstration method of the present disclosure is as follows: An artificial tooth (1) including an artificial tooth (1a) having a defect and / or a cavity, and A structure (2) for supporting an artificial tooth (1), The structure (2) supporting the artificial tooth (1) is connected to the artificial tooth (1), The angle of the artificial tooth (1) can be changed. This is a demonstration method characterized by including a step of filling a dental filling composite resin into the defect and / or cavity of the demonstration instrument, and hardening it to obtain a restored artificial tooth.

Claims

1. An instrument for demonstrating filling and hardening of dental composite resin into a defect and / or cavity of an artificial tooth, An artificial tooth (1) including an artificial tooth (1a) having a defect and / or a cavity, and A structure (2) for supporting an artificial tooth (1), The structure (2) supporting the artificial tooth (1) is connected to the artificial tooth (1), The angle of the artificial tooth (1) can be changed. Demonstration equipment.

2. 2. The demonstration instrument according to claim 1, wherein the artificial teeth (1) are two or more types selected from a central incisor, a lateral incisor, a canine, a first premolar, a second premolar, a first molar, a second molar, a third molar, a deciduous central incisor, a deciduous lateral incisor, a deciduous canine, a first deciduous molar, and a second deciduous molar.

3. 3. The demonstration device according to claim 1 or 2, wherein, assuming that the angle of any one artificial tooth connected to the structure (2) supporting the artificial tooth (1) when the buccal or labial surface of the artificial tooth is perpendicular to a horizontal plane is 0° vertically and 0° horizontally, the angle of the any one artificial tooth can be changed to two or more angles, including 0° vertically and 0° horizontally and other angles, and the other angles are angles under the following conditions: (When any one tooth is on the labial surface) Vertical: -140° or more and less than 0°, or more than 0° and less than 140° Horizontal: -140° or more and 140° or less (If any one tooth is on the right buccal surface) Vertical: -140° or more and less than 0°, or more than 0° and less than 140° Horizontal: -50° or more and 230° or less (When any one tooth is on the left buccal surface) Vertical: -140° or more and less than 0°, or more than 0° and less than 140° Horizontal: -230° or more and 50° or less

4. 3. The demonstration instrument according to claim 1 or 2, wherein the defect and / or cavity is located at a position that allows it to be observed perpendicularly from two or more surfaces selected from the occlusal surface, buccal surface, and labial surface of the artificial tooth.

5. A demonstration method for filling and hardening a dental filling composite resin into a defect and / or cavity of an artificial tooth, An artificial tooth (1) including an artificial tooth (1a) having a defect and / or a cavity, and A structure (2) for supporting an artificial tooth (1), The structure (2) supporting the artificial tooth (1) is connected to the artificial tooth (1), A demonstration method characterized by including a step of filling a dental filling composite resin into a defect and / or cavity of a demonstration instrument, hardening it, and obtaining a restored artificial tooth, wherein the angle of the artificial tooth (1) can be changed.

Images