Kit and method for evaluating property of dental curable composition
A kit with three-dimensional objects of specific surface roughness and curvature allows repeated evaluation of dental curable compositions, addressing the inefficiencies of traditional jaw model methods by enhancing usability and reducing costs.
Patent Information
- Application Number
- JP2023221345
- Authority / Receiving Office
- JP · JP
- Patent Type
- Applications
- Current Assignee / Owner
- Filing Date
- 2023-12-27
- Publication Date
- 2025-07-09
AI Technical Summary
The existing methods for evaluating dental curable compositions using jaw models are time-consuming, costly, and difficult to reuse, and they become single-use items due to challenges in removing prosthetic devices after polymerization, making it impractical for repeated evaluations.
A kit comprising a pair of three-dimensional objects with specific surface roughness and curvature, allowing for repeated use in evaluating dental curable compositions by applying, combining, and checking properties such as fluidity, removability, and color tone without damaging the objects.
Facilitates efficient and cost-effective evaluation of dental curable compositions by reducing labor and costs, enabling multiple uses while maintaining operational feasibility and accuracy.
Smart Images
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Abstract
Description
Technical Field
[0001] The present invention relates to a kit and a method for evaluating the properties of a dental curable composition.
Background Art
[0002] When evaluating the properties of dental curable compositions such as dental cements and dental composite resins, it is common to use a model processed from a jaw model to confirm the properties. The advantage of this method is that a shape approximating the actual clinical form can be used, so an operation feeling and color tone close to the clinical situation can be confirmed.
Summary of the Invention
Problems to be Solved by the Invention
[0003] On the other hand, the demerits of the method of using a model processed from a jaw model to confirm the properties are that it takes time and cost to produce the model, and furthermore, it is not easy to use repeatedly, which has been a problem.
[0004] For example, when confirming the wearing feeling, conformity, removability of excess cement, and color tone of the film after pressure bonding of a prosthetic device, a cavity or abutment tooth processed from a jaw model and a prosthetic device or a model made to resemble the prosthetic device may be used. After attaching the prosthetic device to the cavity or abutment tooth and performing photopolymerization or chemical polymerization, it becomes difficult to remove the prosthetic device, so it becomes a single-use item. Each time the light irradiation conditions (distance and light irradiation intensity) and standing time are confirmed, the model having the cavity or abutment tooth and the prosthetic device etc. becomes unusable, so the need to prepare a plurality of models has been a problem.
Means for Solving the Problems
[0005] The inventors have found a kit comprising a pair of three-dimensional objects having one or more surfaces for combination with each other and one or more dental curable compositions, which can be used multiple times if it has a specific shape and does not impair the handling feel, and thus have achieved the solution to the above problems. That is, in the present disclosure, there is provided a kit for evaluating the properties of a paste-like dental curable composition, which comprises a pair of three-dimensional objects and one or more dental curable compositions, each three-dimensional object has one or more surfaces for combination with each other, and the average surface roughness Ra of the combination surfaces is 1.6 or less, to provide a kit for evaluating the properties of a paste.
[0006] That is, the present disclosure provides the following items. (Item 1) A kit for evaluating the properties of a dental curable composition (B), which comprises a step of applying the dental curable composition (B) between the three-dimensional objects (a1) and (a2) constituting a pair of three-dimensional objects (A), combining the adherent surfaces, and obtaining a laminate, a pair of three-dimensional objects (A) consisting of the three-dimensional objects (a1) and (a2) and the dental curable composition (B), the three-dimensional objects (a1) and (a2) have one or more surfaces for combination with each other, and the average surface roughness Ra of at least any one of the combination surfaces of the three-dimensional objects (a1) and (a2) is 1.6 or less. (Item 2) The kit according to Item 1, wherein the radius of curvature R of the end of the outer periphery of at least any one of the combination surfaces of the three-dimensional objects (a1) and (a2) that combine with each other is less than 2.0 mm. (Item 3) The kit according to Item 2, wherein the outer peripheral shape and size of the combination surfaces of the three-dimensional objects (a1) and (a2) that combine with each other are the same. (Item 4) The kit according to Item 2, which has surfaces that can be combined with each other such that the average gap between the adherent surfaces between the three-dimensional objects when the three-dimensional objects (a1) and (a2) are combined is 1 mm or less. (Item 5) The kit according to item 1, wherein the contrast ratio of the material constituting at least one of the three-dimensional objects (a1) and (a2) is 0.3 or less. (Item 6) The kit according to item 3, wherein the color tone of at least one of the three-dimensional objects (a1) and (a2) is the crown color. (Item 7) Using the kit according to item 1, a step of applying a dental curable composition (B) to the adherend surface of the three-dimensional object (a1), a step of combining the adherend surface of the three-dimensional object (a2) with the application surface of the dental curable composition (B) on the three-dimensional object (a1), and a step of checking for the overflowed dental curable composition (B) A method for checking the fluidity of a dental curable composition (B) including the above steps. (Item 8) Using the kit according to item 1, a step of applying a dental curable composition (B) to the adherend surface of the three-dimensional object (a1), a step of combining the adherend surface of the three-dimensional object (a2) with the application surface of the dental curable composition (B) on the three-dimensional object (a1), a step of partially curing the overflowed dental curable composition (B), and a step of removing the partially cured product with an instrument, A method for checking the removability of a dental curable composition (B) including the above steps. (Item 9) Using the kit according to item 1, a step of applying a dental curable composition (B) to the adherend surface of the three-dimensional object (a1), a step of combining the adherend surface of the three-dimensional object (a2) with the application surface of the dental curable composition (B) on the three-dimensional object (a1), a step of irradiating the overflowed dental curable composition (B) with light to partially cure it, and a step of removing the partially cured product with an instrument, A method for checking the removability of a dental curable composition (B) including the above steps. (Item 10) Using the kit according to item 5, a step of applying a dental curable composition (B) to the adherend surface of the three-dimensional object (a1), A step of combining the adherend surface of solid (a2) with the coated surface of the dental curable composition (B) of solid (a1), and A step of checking the color tone of the film of the dental curable composition (B), A method for checking the color tone of the dental curable composition (B) including the above. (Item 11) Using the kit according to Item 6, A step of applying the dental curable composition (B) to the adherend surface of solid (a1), A step of combining the adherend surface of solid (a2) with the coated surface of the dental curable composition (B) of solid (a1), A step of curing the dental curable composition (B), and A step of checking the color tone compatibility between solid (a1) and / or solid (a2) and the dental curable composition (B), A method for checking the color tone compatibility including the above.
Advantages of the Invention
[0007] Since this kit can be used repeatedly, not only does it facilitate the operation of checking the properties of the dental curable composition, but also the labor and cost are significantly reduced compared to the case of using a jaw model or artificial teeth.
Brief Description of the Drawings
[0008]
Figure 1
Figure 2
Figure 3
Modes for Carrying Out the Invention
[0009] Hereinafter, the kit and method for evaluating the properties of the dental curable composition provided in the present disclosure will be described in detail.
[0010] <A pair of three-dimensional objects (A) to be combined with each other>
[0011] The pair of three-dimensional objects (A) is composed of a three-dimensional object (a1) and a three-dimensional object (a2). If there is one or more surfaces for combining with each other between the three-dimensional object (a1) and the three-dimensional object (a2), their shapes may be the same or different, and they may be a cylinder, a cone, a cube, a rectangular parallelepiped, a polyhedron, a concavo-convex shape, or a complex shape. When the average surface roughness Ra of the combining surfaces of the three-dimensional object (a1) and the three-dimensional object (a2) exceeds 1.6, when the dental curable composition (B) is cured, the dental curable composition adheres by mechanical fitting and the three-dimensional object (a1) and the three-dimensional object (a2) cannot be removed. On the other hand, when the average surface roughness Ra of the combining surfaces of the three-dimensional object (a1) and the three-dimensional object (a2) is 1.6 or less, the three-dimensional object (a1) and the three-dimensional object (a2) adhere to such an extent that they can be removed even after the dental curable composition is cured, and it is suitable for applications where it can be used repeatedly. From the viewpoint of repeated resistance, the average surface roughness Ra of the combining surfaces is more preferably 0.8 or less.
[0012] The radius of curvature R of the end portion of the outer periphery of the combining surface of the three-dimensional object (a1) and the three-dimensional object (a2) is preferably less than 2.0 mm. This is because when R is less than 2.0 mm, it is closer to the actual clinical shape and the operating feeling is easier to reproduce. When the radius of curvature R is 0.05 mm or more and less than 2.0 mm, the gap is reduced and it is closer to the conformity of the actual clinical margin portion, so it is more preferable. The radius of curvature R of the end portion of the outer periphery of the combining surface of the three-dimensional object (a1) and the three-dimensional object (a2) can be calculated using, for example, a radius gauge or an image dimension measuring device.
[0013] The gap between the combining surfaces of the three-dimensional object (a1) and the three-dimensional object (a2) is desirably set according to the purpose, and the gaps on the outer peripheral portion of the adherend surface of the pair of three-dimensional objects (A) after combination are all preferably 1 mm or less, more preferably 0.3 mm or less, and most preferably 0.1 mm or less. If it is 1 mm or less, it is optimal for evaluating the workability of filling materials such as dental composite resins, and if it is 0.3 mm or less, it is optimal for evaluating the workability of dental cements and the like.
[0014] The sizes of the three-dimensional objects (a1) and (a2) are not limited as long as they are within the operable range. Examples of the upper and lower limits of the size ratio (volume ratio, [three-dimensional object (a1)] / [three-dimensional object (a2)]) of the three-dimensional objects (a1) and (a2) include 1 / 2, 1 / 1, 2 / 1, etc.
[0015] It is preferable that there are no structures other than the three-dimensional objects (a1) and (a2) near the outer periphery of the surfaces where the three-dimensional objects (a1) and (a2) are combined. The absence of such structures makes it easier to perform operations related to the removability of the overflowed dental curable composition (B).
[0016] The outer peripheral shape and the size of the outer periphery of the surfaces where the three-dimensional objects (a1) and (a2) are combined may be the same or different. When they are the same, it becomes easier to perform operations related to the removability of the overflowed dental curable composition (B). Also, the structure of the surfaces where the three-dimensional objects (a1) and (a2) are combined with each other may be a flat structure, a concavo-convex structure, a fitting structure, a screw structure, etc.
[0017] The color tones of the three-dimensional objects (a1) and (a2) are not particularly limited and may be transparent or colored, and the color tones of each three-dimensional object may be the same or different. By selecting a color tone different from that of the dental curable composition (B) used, the discriminability can be improved, and by using three-dimensional objects with a color tone approximated to that of tooth substance, it is also possible to perform color comparison with dental-specific color tone series such as System A, System B, System C, and System D. When a transparent color is selected, the color tone of the layer of the dental curable composition (B) sandwiched between the three-dimensional objects (a1) and (a2) can be visually observed, and it is possible to reproduce the color tone of the cement layer sandwiched between dental prostheses and the like. At this time, it is preferable that the contrast ratio of the material constituting at least one of the three-dimensional objects (a1) and (a2) is 0.3 or less, and more preferably 0.2 or less.
[0018] The contrast ratio between the three-dimensional object (a1) and the three-dimensional object (a2) is obtained by placing the test piece on a standard white background or a standard black background respectively, illuminating it under certain conditions (light source, irradiation area, etc.), measuring the brightness (Yw) of the white background and the brightness (Yb) of the black background respectively, and calculating the contrast ratio from a specific formula. Since the contrast ratio is affected by the thickness (L) of the test piece, in order to obtain a more accurate contrast ratio, the thickness correction of the test piece is added, and the contrast ratio of the dental curable composition (B) of the present invention is calculated using Formula (1). Contrast ratio = 1 - (1 - Yw / Yb)^(1 / L) ··· (1) The closer this contrast ratio is to 1, the more opaque the material is, and the closer it is to 0, the more transparent the material is. Note that the "test piece" refers to "the object for measuring the contrast ratio", and preferably has a plate-like structure.
[0019] The materials of the three-dimensional object (a1) and the three-dimensional object (a2) are not particularly limited, and can be selected without any limitation from dental materials and general materials such as titanium, zirconia, silicon dioxide, alumina, acrylic resin, PAEK (polyaryletherketone), and hardened products of general dental compositions. The materials of the three-dimensional object (a1) and the three-dimensional object (a2) may be the same or different.
[0020] A release agent can be applied to the three-dimensional object (a1) and the three-dimensional object (a2) so that the dental curable composition (B) does not adhere before use. Any known release agent can be applied without limitation, and silicon-based, fluorine-based, and wax-based release agents are preferred from the viewpoint of operability.
[0021] <Dental curable composition (B)> The dental curable composition (B) can be used without limitation as long as it is a composition combining known materials, and examples include dental composite resins, dental cements, dental adhesive materials, dental resin core materials, dental hard resins, dental color matching confirmation materials, soft liners, etc.
[0022] The dental curable composition (B) can contain a resin having a polymerizable group and a polymerization initiator, and a composition containing a filler is preferable.
[0023] The dental curable composition (B) may have any of the curing characteristics of a photopolymerization type that cures by external light energy, a chemical polymerization type that cures spontaneously, or a dual-cure type that has both.
[0024] The dental curable composition (B) is composed of one or two or three pastes and may be filled in a syringe, a container with a lid, etc. When it is composed of two or more pastes, it may be made uniform by manual kneading or automatic kneading with a mixer or the like before use. Also, a powder-liquid form may be used, and a composition that becomes a paste-like property after kneading can also be used.
[0025] <Specific usage method of the present invention>
[0026] A method of using a kit containing the three-dimensional objects (a1) and (a2) and one or more dental curable compositions (B). After arranging the dental curable composition (B) on the mating surface of one of the three-dimensional objects (also referred to as the "adhesive surface" in the present disclosure), the other three-dimensional object is combined to check the fluidity of the paste. By this method, the fluidity and viscosity of the dental curable composition (B) can be grasped without clinical use.
[0027] A method of using a kit containing the three-dimensional objects (a1) and (a2) and one or more dental curable compositions (B). After arranging the dental curable composition (B) on the mating surface of one of the three-dimensional objects, the other three-dimensional object is combined, and after partially curing the overflowed dental curable composition (B), the operability when removing it using an instrument is checked. By this method, the hardness, properties, and removability when the dental curable composition (B) is partially cured can be grasped without clinical use. In the present disclosure, "partial curing" refers to a state between a state where it is not cured at all and a state where it is completely cured, preferably a state where it does not flow and has a hardness that can be removed using an instrument.
[0028] A method for confirming the operability when, using a kit including a solid (a1) and a solid (a2) and one or more dental curable compositions (B), after disposing the dental curable composition (B) on the mating surface of one solid, combining the other solid, and then irradiating the overflowed dental curable composition (B) with light for partial curing and removing it using an instrument. By this method, not only the hardness, properties, and removability when the dental curable composition (B) is partially cured by light irradiation without clinical use, but also the appropriate light irradiation time and light irradiation distance can be grasped.
[0029] A method for confirming the color tone of the film after, using a kit including a solid (a1) and a solid (a2) and one or more dental curable compositions (B), after disposing the dental curable composition (B) on the mating surface of one solid, combining the other solid, and then irradiating the dental curable composition (B) with light for curing. By this method, the color tone of the film after curing the dental curable composition (B) without clinical use can be grasped, and the transparency and color tone shielding property can be confirmed. In the present disclosure, "color tone shielding property" refers to "the property of shielding the color tone ahead of the layer of the dental curable composition (B)".
[0030] A method for confirming the color tone compatibility between the color tone of the solid and the cured dental curable composition (B) after, using a kit including a solid (a1) and a solid (a2) and one or more dental curable compositions (B), after disposing the dental curable composition (B) on the mating surface of one solid, combining the other solid, and then curing the dental curable composition (B). By this method, the color tone compatibility between the cured dental curable composition (B) and the color tone of a pair of solids (A) and the color tone change before and after curing can be confirmed without clinical use.
[0031] That is, the properties evaluated in the present disclosure include, for example, one or more selected from the fluidity, viscosity, operability, transparency, color tone shielding property, removability of the partially cured product of the dental curable composition (B), hardness, fluidity, viscosity, color tone, light irradiation time required for partial curing, light irradiation distance, color tone compatibility of the cured product of the dental curable composition (B), and hardness.
[0032] <Others> As an instrument for confirming the removability and workability of the dental curable composition (B), dental instruments such as a probe, explorer, probe, excavator, forceps, etc., or any instrument with a thin tip can be used without any limitation. When performing light irradiation, any light source such as LED, halogen, xenon, etc. can be used without any limitation as long as it is a light source having a wavelength including λ = 450 nm, and a dental light irradiator is preferred.
Examples
[0033] Specific examples of the present disclosure will be described below with reference to examples, but the present disclosure is not limited to these examples.
[0034] <Method for measuring average surface roughness> Using a small surface roughness measuring instrument (product name "SJ-411", manufactured by Mitutoyo Corporation), the surface roughness of the mating surfaces of each solid was measured at three points, and the average value was taken as the average surface roughness. In the case of a complex shape such as an uneven structure, the surface with the largest area was measured at three points. For example, in the combination of a cylindrical solid and a columnar solid, when the area of the inner side of the cylindrical solid and the outer side surface of the columnar solid is the largest, three points were measured from the entire inner surface of the cylindrical solid and three points were measured from the entire outer side surface of the columnar solid.
[0035] <Method for measuring radius of curvature R> Using an image dimension measuring device (product name "IM-6020", manufactured by Keyence Corporation), the radius of curvature R at one end of the outer periphery of the mating surface of each solid was measured.
[0036] <Method for measuring gap between solids> An impression material (product name "Zirdefit Wash Type", manufactured by Shofu Inc.) was applied between the mating surfaces of the solids, and after combination, it was cured for 10 minutes under a state of applying a 1 kg weight. The thickness of the cured impression was measured at five points, and the average value was taken as the gap between the solids.
[0037] <Measurement of contrast ratio> Each solid was cut into a plate shape with a thickness of 1.1 ± 0.1 mm, polished in the order of waterproof abrasive papers #500, 1200, and 2000, and then buffed to prepare test pieces with a thickness of 1.0 ± 0.1 mm. The test pieces were placed on the background of a standard white plate (D65 / 10° X = 81.07, Y = 86.15, Z = 93.38) or a standard black plate (D65 / 10° X = 0.0, Y = 0.0, Z = 0.0), respectively, and illuminated under predetermined fixed conditions (light source: C, viewing angle: 2°, measurement area: 11 mm) using a color guide spectrocolorimeter (manufactured by BYK-Chemie). The brightness (Yw) of the white background and the brightness (Yb) of the black background were measured respectively, calculated from Equation (1), and the lower value among the contrast ratios of each solid was taken as the contrast ratio.
[0038] <Solid (a1) and solid (a2)> Solids (a1) and (a2) that constitute the following pair of solids (A) were used.
[0039]
Table 1
[0040]
Table 2
[0041] The combination method for the structures of solids (a1) and (a2) in the table was as follows. When both solids (a1) and (a2) are cylinders, their bottom surfaces or top surfaces were combined. When solids (a1) and (a2) are solids each having a concave portion or a convex portion, they were combined so that the key and the keyhole match.
[0042] <Evaluation method> Reusability After applying 0.8 g of the kneaded product of the dental hardening composition (product name: "Beauty Link SA Ivory", manufactured by Matsuura Dental Co., Ltd.) to the mating surface of the solid (a1), the solids (a1) and (a2) were combined and a load of 200 g was applied for pressure bonding. Then, the overflowing dental hardening composition was irradiated with light for 1 second (product name: "Penbright", manufactured by Matsuura Dental Co., Ltd., irradiation conditions: 800 mW / cm 2 ) to cause partial curing, and then the solids were separated and the mating surfaces were cleaned. After repeating the above operation 10 times, if the solid was damaged or (B) the dental hardening composition did not adhere and the solids (a1) and (a2) could be separated, it was marked as 〇; if not, it was marked as ×. Evaluation of fluidity After applying 0.8 g of the kneaded product of the dental hardening composition (product name: "Beauty Link SA Ivory", manufactured by Matsuura Dental Co., Ltd.) to the mating surface of the solid (a1), the solids (a1) and (a2) were combined and a load of 200 g was applied for pressure bonding, and it was confirmed whether the fluidity of the paste could be evaluated. If the paste was washed away and the fluidity could be confirmed, it was marked as 〇; if the paste partially remained in the gap but the fluidity could be confirmed, it was marked as △; if not, it was marked as ×. Evaluation of removability of excess cement After applying 0.8 g of the kneaded product of the dental hardening composition (product name: "Beauty Link SA Ivory", manufactured by Matsuura Dental Co., Ltd.) to the mating surface of the solid (a1), the solids (a1) and (a2) were combined and a load of 200 g was applied for pressure bonding. Then, the overflowing dental hardening composition was irradiated with light for 1 second to cause partial curing, and it was confirmed whether the operability during removal using an instrument could be evaluated. Compared with a model in which the second premolar of a jaw model (product name: "Prosthodontic Restoration Practice Jaw Model 500A", manufactured by Nissin Co., Ltd.) was formed as a abutment tooth and a CAD / CAM crown (product name: "Matsuura Block HC Hard II A3 Color", manufactured by Matsuura Dental Co., Ltd.) cut into a shape that fits the abutment tooth, if the operating feeling was equivalent, it was marked as 〇; if the operating feeling was clearly different, it was marked as ×. Confirmation of color tone during film formation After applying 0.8 g of the kneaded product of the dental hardening composition (product name: "Beauty Link SA Ivory", manufactured by Matsuura Dental Co., Ltd.) to the surface for combining the three-dimensional objects (a1), the three-dimensional objects (a1) and (a2) were combined and a pressure of 200 g was applied for pressure bonding to check whether the color tone during film formation of the dental hardening composition could be visually observed. When the color tone of the film could be visually observed, it was marked as ○, and when it could not be observed, it was marked as ×.
[0043] <Evaluation Results>
[0044]
Table 3
[0045] Three-dimensional objects A1 to A6 (Examples 1 to 6) can be used repeatedly, while three-dimensional objects A7 to 11 (Comparative Examples 1 to 5) were fixed when the dental hardening composition hardened and could not be used repeatedly.
[0046] For three-dimensional objects A1 to A6 (Examples 1 to 6), evaluation of fluidity, removability of excess cement, and confirmation of color tone during film formation could all be carried out without problems. On the other hand, for three-dimensional objects A7 and 10 (Comparative Examples 1 and 4), the radius of curvature R (mm) of both three-dimensional objects (a1) and (a2) was large, and the shape of the part corresponding to the margin was different from the jaw model, so there was an obvious sense of discomfort in operability. Three-dimensional object A8 (Comparative Example 2) is a CAD / CAM crown in which three-dimensional object (a2) is cut into a shape that fits the abutment tooth, so the color tone during film formation could not be confirmed. For three-dimensional object A9 (Comparative Example 3), since both three-dimensional objects (a1) and (a2) were tooth crown colors, the color tone during film formation could not be confirmed. For three-dimensional object A11 (Comparative Example 5), the gap between three-dimensional objects (a1) and (a2) was as large as 2.0 mm, the paste hardly moved, and fluidity and color tone during film formation could not be evaluated. Since the part corresponding to the margin was separated and no excess cement was generated, none of the evaluations were possible.
Claims
1. A kit for evaluating the properties of a dental curable composition (B), which comprises a step of applying the dental curable composition (B) between a solid (a1) and a solid (a2) that constitute a pair of solids (A), combining the adhering surfaces, and obtaining a laminate, a pair of solids (A) consisting of the solid (a1) and the solid (a2), and the dental curable composition (B), wherein there is one or more surfaces for combining between the solid (a1) and the solid (a2), and the average surface roughness Ra of at least any one of the surfaces for combining between the solid (a1) and the solid (a2) is 1.6 or less.
2. The kit according to claim 1, wherein the radius of curvature R of at least the end portion of the outer periphery of at least any one of the surfaces for combining between the solid (a1) and the solid (a2) is less than 2.0 mm.
3. The kit according to claim 2, wherein the outer peripheral shape and size of the surfaces for combining between the solid (a1) and the solid (a2) are the same.
4. The kit according to claim 2, which has surfaces that can be combined with each other so that the average gap between the adhering surfaces between the solids when the solid (a1) and the solid (a2) are combined is 1 mm or less.
5. The kit according to claim 1, wherein the contrast ratio of the material constituting at least one of the solid (a1) and the solid (a2) is 0.3 or less.
6. The kit according to claim 3, wherein the color tone of at least one of the solid (a1) and the solid (a2) is the color of a dental crown.
7. Using the kit according to claim 1, a step of applying the dental curable composition (B) to the adhering surface of the solid (a1), a step of combining the adhering surface of the solid (a2) with the surface of the dental curable composition (B) applied to the solid (a1), and a step of checking the overflowed dental curable composition (B) A method for checking the fluidity of the dental curable composition (B).
8. Using the kit according to claim 1, a step of applying the dental curable composition (B) to the adhering surface of the solid (a1), a step of combining the adhering surface of the solid (a2) with the surface of the dental curable composition (B) applied to the solid (a1), a step of partially curing the overflowed dental curable composition (B), and a step of removing the partially cured product with an instrument, A method for checking the removability of the dental curable composition (B).
9. Using the kit according to claim 1, a step of applying the dental curable composition (B) to the adhering surface of the solid (a1), a step of combining the adhering surface of the solid (a2) with the surface of the dental curable composition (B) applied to the solid (a1), A step of irradiating the overflowed dental curable composition (B) with light to cause partial curing, and A step of removing the partially cured product with an instrument, A method for confirming the removability of the dental curable composition (B) including the above steps.
10. Using the kit according to claim 5, A step of applying the dental curable composition (B) to the adherent surface of the solid (a1), A step of combining the adherent surface of the solid (a2) with the coated surface of the dental curable composition (B) of the solid (a1), and A step of confirming the color tone of the film of the dental curable composition (B), A method for confirming the color tone of the dental curable composition (B) including the above steps.
11. Using the kit according to claim 6, A step of applying the dental curable composition (B) to the adherent surface of the solid (a1), A step of combining the adherent surface of the solid (a2) with the coated surface of the dental curable composition (B) of the solid (a1), A step of curing the dental curable composition (B), and A step of confirming the color tone compatibility between the solid (a1) and / or the solid (a2) and the dental curable composition (B), A method for confirming the color tone compatibility including the above steps.