Dental treatment index, dental treatment set

Abstract

The goal is to provide dental treatment indexes and dental treatment sets that enable high-quality tooth restoration regardless of the practitioner's skill level, while also being manufactured with high efficiency. [Solution] A second dental treatment index 20 has a shape that can be superimposed on a first dental treatment index 10, which is made of a light-transmitting material and integrally molded by a 3D printer, and is made of a light-transmitting material that is harder than the light-transmitting material that forms the first dental treatment index 10, and is integrally molded by a 3D printer, and has multiple irregularities on its inner surface.

Description

Technical Field

[0001] The present invention relates to a dental treatment index, a dental treatment set, and a method for manufacturing the dental treatment index.

Background Art

[0002] In the field of dental treatment, for the repair of teeth damaged by dental caries, fractures, etc., for example, a technique using a resin or composite resin (hereinafter referred to as a photocurable resin) that cures by light, such as composite resin, has become widespread (see, for example, Patent Document 1 below). In this technique, the photocurable resin is attached to the tooth before repair in a state before curing, and the tooth is repaired by curing it while maintaining a predetermined shape.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Patent Document 2

[0004] Therefore, the present invention aims to solve the problems of the prior art described above, to provide a dental treatment index, a dental treatment set, and a method for manufacturing the dental treatment index that enable high-quality tooth restoration regardless of the skill of the practitioner, and that are manufactured with good efficiency. [Means for solving the problem]

[0005] To achieve the above objectives, the first index for dental treatment of the present invention has a shape that can integrally cover multiple teeth, including the tooth to be restored, and when covered on the multiple teeth, it has a gap between the tooth to be restored and the inner wall that allows for the interposition of a photocurable resin, and has multiple through holes at positions facing the upper surface of the tooth to be restored, and is made of a light-transmitting material and is integrally molded by a 3D printer. Furthermore, in addition to the first feature described above, the first index for dental treatment of the present invention has a second feature: the shape of the lower peripheral edge line is such that it follows the gum line of multiple teeth, including the tooth to be restored, and when it is covered on multiple teeth, the lower peripheral edge line overlaps with the gum line. Furthermore, in addition to the first or second features described above, the first index for dental treatment of the present invention has a third feature: its outer surface is composed of a smooth surface. Furthermore, the first index for dental treatment of the present invention has a fourth feature in addition to the first or second feature described above, which is that it has multiple irregularities on its outer surface. Furthermore, a fifth feature of the present invention is that the second index for dental treatment has a shape that can be superimposed on the first index for dental treatment described in claim 1, is made of a light-transmitting material with a higher hardness than the light-transmitting material that forms the first index for dental treatment, and is integrally molded by a 3D printer. Furthermore, in addition to the fifth feature described above, the second dental treatment index of the present invention has a sixth feature: when superimposed on the first dental treatment index, it has multiple through holes at positions facing the multiple through holes provided by the first dental treatment index. Furthermore, in addition to the fifth or sixth feature described above, the second index for dental treatment of the present invention has a seventh feature in that at least one of its inner and outer surfaces is composed of a smooth surface. Furthermore, in addition to the fifth or sixth feature described above, the second index for dental treatment of the present invention has an eighth feature: it has multiple irregularities on its inner surface. Furthermore, a ninth feature of the present invention is that the dental treatment set is composed of a first dental treatment index described in claim 1 and a second dental treatment index described in claim 5. Furthermore, in addition to the ninth feature described above, the dental treatment set of the present invention has a tenth feature: it is shaped to be interposed between the first dental treatment index and the second dental treatment index, and further comprises an interposing resin member made of a highly viscous transparent resin material. Furthermore, the eleventh feature of the present invention is that the method for manufacturing the first index for dental treatment according to claim 1 comprises: a tooth imaging step of capturing images of the patient's dentition including the teeth to be restored before restoration; a three-dimensional shape data generation step of teeth before restoration of generating three-dimensional shape data of the dentition including the teeth to be restored before restoration based on a plurality of images captured in the tooth imaging step; a three-dimensional shape data generation step of teeth after restoration of generating three-dimensional shape data of the patient's dentition including the teeth to be restored after restoration based on the three-dimensional shape data generated in the three-dimensional shape data generation step of teeth before restoration; a three-dimensional shape data generation step of the first index for dental treatment of generating three-dimensional shape data of the first index for dental treatment of generating three-dimensional shape data of the teeth after restoration based on the three-dimensional shape data generated in the three-dimensional shape data generation step of teeth after restoration; and a first index for dental treatment printing step of printing the first index for dental treatment of using a light-transmitting material with a 3D printer based on the three-dimensional shape data of the first index for dental treatment of generating the three-dimensional shape data of the first index for dental treatment of generating step of teeth after restoration. Furthermore, the method for manufacturing a second index for dental treatment according to the present invention is a method for manufacturing a second index for dental treatment according to claim 5, and is characterized by comprising: a three-dimensional shape data generation step for a second index for dental treatment, which generates three-dimensional shape data for a second index for dental treatment based on the three-dimensional shape data for a first index for dental treatment generated by the three-dimensional shape data generation step for a first index for dental treatment according to claim 11; and a second index for dental treatment printing step, which prints the second index for dental treatment using a 3D printer with a light-transmitting material that has a higher hardness than the light-transmitting material used to manufacture the first index for dental treatment, based on the three-dimensional shape data for a second index for dental treatment generated by the three-dimensional shape data generation step for a second index for dental treatment. [Effects of the Invention]

[0006] According to the first index for dental treatment described in claim 1, multiple through-holes can be used as injection and discharge ports for photocurable resin and air discharge ports, making it possible to spread the photocurable resin throughout the area to be restored. Therefore, it can be made into a highly convenient first index for dental treatment. Furthermore, because it is made of a light-transmitting material, the tooth to be restored and the injection state of the light-curing resin can be visually confirmed during dental treatment. Therefore, it can be made into an even more convenient primary index for dental treatment. Furthermore, because it is integrally molded using a 3D printer, it offers high reproducibility of the shape of the dentition and can be used to create a highly accurate first index for dental treatment that can be closely fitted to the dentition.

[0007] Furthermore, according to the first dental treatment index described in claim 2, in addition to the effects of the configuration described in claim 1, the shape of the lower peripheral line is such that it follows the gum line of multiple teeth, including the tooth to be restored, and when the index is covered over multiple teeth, the lower peripheral line overlaps with the gum line, thereby allowing appropriate pressure to be applied to the gum line of multiple teeth, including the tooth to be restored, during dental treatment.

[0008] Furthermore, according to the first dental treatment index described in claim 3, in addition to the effects of the configuration described in claim 1 or 2, the transparency of the first dental treatment index itself can be increased by making the outer surface a smooth surface. This makes it possible to make the tooth to be restored and the injection state of the light-curing resin more visible, resulting in a first dental treatment index that is even more visible and convenient.

[0009] Furthermore, according to the first dental treatment index described in claim 4, in addition to the effects of the configuration described in claim 1 or 2, having multiple irregularities on its outer surface makes it possible to transmit external forces applied to the first dental treatment index by a collection of points when another index is placed over the outer surface of the first dental treatment index.

[0010] Furthermore, according to the second dental treatment index described in claim 5, since it is made of a light-transmitting material with higher hardness than the light-transmitting material forming the first dental treatment index, appropriate pressure can be applied to the first dental treatment index from all directions when it is superimposed on it. In addition, the tooth to be restored and the injection state of the light-curable resin can be visually confirmed during dental treatment. Therefore, the second dental treatment index can be made even more convenient. Furthermore, because it is integrally molded using a 3D printer, the design shape is reproduced with high accuracy, resulting in a highly precise second index for dental treatment that can be closely attached to the first index for dental treatment. In addition, because it can be closely attached to the first index for dental treatment, diffuse reflection can be suppressed, resulting in a second index for dental treatment with good visibility.

[0011] Furthermore, according to the second dental treatment index described in claim 6, in addition to the effects of the configuration described in claim 5, when superimposed on the first dental treatment index, the second index has multiple through-holes positioned opposite to the multiple through-holes of the first dental treatment index. This configuration allows the multiple through-holes to be used as injection and discharge ports for the photocurable resin and as air discharge ports, making it possible to spread the photocurable resin to the area to be restored. Thus, a highly convenient second dental treatment index can be made.

[0012] Furthermore, according to the second index for dental treatment described in claim 7, in addition to the effects of the configuration described in claim 5 or 6, the transparency of the second index for dental treatment itself can be increased by making at least one of the inner and outer surfaces a smooth surface. This makes it easier to see the tooth to be restored and allows for better visual confirmation of the injection state of the light-curable resin. Therefore, a second index for dental treatment can be made even more visible and convenient.

[0013] Further, according to the second index for dental treatment described in claim 8, in addition to the operational effects of the configuration described in claim 5 or 6 above, by having a plurality of concavities and convexities on the inner surface, when superimposed on the first index for dental treatment, it becomes possible to transmit the external force applied to the first index for dental treatment by a set of points.

[0014] Further, according to the dental treatment set described in claim 9, high-quality tooth restoration is possible regardless of the skill of the operator.

[0015] Further, according to the dental treatment set described in claim 10, in addition to the operational effects of the configuration described in claim 9 above, the transparency of the dental treatment set can be increased, and the adhesion between the first index for dental treatment and the second index for dental treatment can be increased.

[0016] Further, according to the method for manufacturing the first index for dental treatment described in claim 11, it is possible to efficiently manufacture a highly accurate first index for dental treatment with high reproducibility of the shape of the dental arch with less load.

[0017] Further, according to the method for manufacturing the second index for dental treatment described in claim 12, it is possible to efficiently manufacture a highly accurate second index for dental treatment with less load.

Brief Description of the Drawings

[0018] [Figure 1] A diagram showing the dental arch before and after restoration and the dental treatment set according to an embodiment of the present invention, where (a) is a diagram showing the dental arch before restoration, (b) is a diagram showing the dental arch after restoration, and (c) is a diagram showing the state in which the dental treatment set is attached to the teeth. [Figure 2] A diagram showing the first index for dental treatment according to an embodiment of the present invention, where (a) is a front view, (b) is a side view, and (c) is a plan view. [Figure 3] A diagram showing the second index for dental treatment according to an embodiment of the present invention, where (a) is a front view, (b) is a side view, and (c) is a plan view. [Figure 4]The diagram shows a dental treatment process using a dental treatment set according to an embodiment of the present invention, where (a) shows the state in which the first dental treatment index is attached to the dentition, (b) shows the state in which the second dental treatment index is superimposed on the first dental treatment index, and (c) shows the state in which a photocurable resin is injected into the dental treatment set. [Figure 5] The diagram shows a dental treatment process using a dental treatment set according to an embodiment of the present invention, and a modified example of the dental treatment process using the dental treatment set, where (a) is a flowchart of the dental treatment process, and (b) is a diagram showing the state in which a photocurable resin is injected into the inner surface of the first index for dental treatment. [Figure 6] This figure shows the manufacturing process of a first dental treatment index and a second dental treatment index according to an embodiment of the present invention, where (a) is a flowchart showing the manufacturing process of the first dental treatment index and (b) is a flowchart showing the manufacturing process of the second dental treatment index. [Figure 7] This is a perspective view showing a conventional Holter-type index. [Modes for carrying out the invention]

[0019] The following description will explain, with reference to the drawings, a dental treatment index, a dental treatment set, and a method for manufacturing the dental treatment index according to embodiments of the present invention, in order to facilitate understanding of the present invention. However, the following description is not intended to limit the present invention as described in the claims.

[0020] First, referring to Figure 1, the dental treatment set 1 according to an embodiment of the present invention is used for restoring and treating teeth using composite resin treatment technology. In the following explanation, we will focus on the case where a restored tooth T1 is formed from a light-curable resin in the area where a tooth is missing, as shown in Figures 1(a) and 1(b) of the anterior dentition D, which has multiple teeth T erected from the gums G (so-called bridge restoration). However, the cases to which the dental treatment set 1 of the present invention can be applied are not limited to so-called bridge restorations; for example, it can also be used for veneer restorations, crown restorations, inlay / onlay restorations, full-mouth restorations, etc.

[0021] As shown in Figures 1 to 4, this dental treatment set 1 consists of a first dental treatment index 10 and a second dental treatment index 20. This dental treatment set 1 is used by superimposing the first dental treatment index 10 and the second dental treatment index 20 onto multiple teeth T, including the tooth to be restored. In this state, photocurable resin is filled into the first dental treatment index 10 from a photocurable resin injector 30 to perform restorative treatment on the tooth to be restored.

[0022] The aforementioned first dental treatment index 10 is a component that is attached by covering multiple teeth T (dentition D), including the tooth to be restored, and functions as a so-called mold for curing the light-curable resin filled (interposed) inside into the desired shape. Since the inner surface of this dental treatment first index 10 needs to be able to reproduce the restored dentition D1, the shape of the inner surface 13 shown in Figure 2(b) is the same as the outer surface shape of multiple teeth T (dentition T1), including the restored tooth T1 of the tooth to be restored. In this embodiment, the outer surface 14 shown in Figures 2(a) and 2(b) is also configured to have the same shape as the outer surface shape of multiple teeth T (dentition T1), including the restored tooth T1 of the tooth to be restored. Furthermore, as shown in Figure 2(c), the first dental treatment index 10 is provided with a plurality of through-holes 11 located opposite the upper surface of the tooth to be restored. More specifically, in this embodiment, it is provided with three circular through-holes 11 whose opening area decreases from the upper surface toward the inner surface. Note that the shape, size, and number of through-holes are not limited to those of this embodiment and can be changed as appropriate. However, preferably, the number of through-holes 11 is two or more. Furthermore, in this embodiment, as shown by the dashed line in Figure 1, the shape of the lower peripheral edge line 12 follows the gum line L of multiple teeth, including the tooth to be restored, and is configured so that when attached to the dental arch D, the lower peripheral edge 12 overlaps with the gum line L. Furthermore, in this embodiment, the first index 10 for dental treatment is constructed to be integrally molded by a 3D printer using a soft-type material that transmits light (hereinafter referred to as light-transmitting), such as soft resin, silicone, or highly transparent soft resin. Note that the longitudinal length of the first dental treatment index 10 is not limited to the configuration of this embodiment and can be changed as appropriate. However, preferably, it is desirable that the length be such that it can integrally cover at least the first adjacent teeth located on the left and right sides of the tooth to be restored, and the second adjacent teeth located on the left and right sides of those first adjacent teeth (a length that can cover a total of five teeth T, including the tooth to be restored).

[0023] The aforementioned second dental treatment index 20 is a component that is attached to the first dental treatment index 10 in close contact with it, thereby applying even pressure to the first dental treatment index 10 from all directions. Since the inner surface of the second dental treatment index 20 needs to be in close contact with the first dental treatment index 10, the shape of the inner surface 23 shown in Figure 3(b) is the same as the shape of the outer surface 14 of the first dental treatment index 10. In this embodiment, the outer surface 24 is also configured to have the same shape as the outer surface 14 of the first dental treatment index 10. Furthermore, as shown in Figures 2(c) and 3(c), when the dental treatment second index 20 is superimposed on the dental treatment first index 10, it has multiple through holes 21 of the same shape and size as each of the multiple through holes 11 of the dental treatment first index 10, positioned opposite each other. More specifically, in this embodiment, it has three circular through holes 21. Note that the shape, size, and number of through holes are not limited to those of this embodiment and can be changed as appropriate. However, preferably, the number of through holes 21 is two or more. Furthermore, in this embodiment, the second index 20 for dental treatment is constructed to be integrally molded by a 3D printer using a light-transmitting material with higher hardness than the light-transmitting material used to form the first index 10 for dental treatment, such as a hard-type light-transmitting resin. Note that the longitudinal length of the second dental treatment index 20 is not limited to the configuration of this embodiment and can be changed as appropriate. For example, it may be configured to be longer than the longitudinal length of the first dental treatment index 10 so that the second dental treatment index 20 directly contacts teeth T that are not to be restored. However, preferably, similar to the first dental treatment index 10, it is desirable that it be sized to integrally cover at least the first adjacent teeth located on the left and right sides of the tooth to be restored, and the second adjacent teeth located on the left and right sides of those first adjacent teeth (a length that can cover a total of five teeth T, including the tooth to be restored).

[0024] Next, with reference to Figures 1, 4, and 5(a), a dental treatment process using the dental treatment set 1 according to an embodiment of the present invention will be described. First, referring to Figures 4(a) and 4(b), the first dental treatment index 10 is attached to multiple teeth T (dentition D shown in Figure 1(a)), including the tooth to be restored, by the first and second dental treatment index placement process shown in step S1 of Figure 5(a). Then, the second dental treatment index 20 is superimposed on the first dental treatment index 10. At this time, the inner surface 23 of the second dental treatment index 20 is attached in close contact with the outer surface 14 of the first dental treatment index 10. This completes the attachment of the dental treatment set 1 to multiple teeth T, including the tooth to be restored. Subsequently, referring to Figure 4(c), a predetermined amount of photocurable resin is injected into the inside of the first dental treatment index 10 through the through holes 21 and 11 using a photocurable resin injector 30, in the photocurable resin filling process shown in step S2 of Figure 5(a). At this time, excess photocurable resin and air are discharged from the other through holes 11 and 21, except for the through holes 11 and 21 through which the photocurable resin injector 30 is inserted. Subsequently, in that state, the light irradiation process shown in step S3 of Figure 5(a) is performed, irradiating the gap formed between the tooth to be restored and the first dental treatment index 10 with a predetermined amount of light for a predetermined time from the outside of the dental treatment set 1, thereby curing the light-curable resin interposed in the gap and restoring it to the target tooth shape. Subsequently, the second dental treatment index 20 and the first dental treatment index 10 are removed from the dentition D1 shown in Figure 1(b) in the order shown in step S4 of Figure 5(a) by the removal process of the first and second dental treatment indexes. With the above steps completed, the dental treatment process using the dental treatment set 1 according to the embodiment of the present invention is finished, and the treated tooth T1 shown in Figure 1(b) is formed. It should be noted that the dental treatment process using dental treatment set 1 is not limited to the process described above. For example, referring to Figure 5(b), before attaching the first dental treatment index 10 to the dentition D shown in Figure 1(a), the photocurable resin may be injected into the inside of the first dental treatment index 10 using the photocurable resin injector 30, then the first dental treatment index 10 may be attached to the dentition D, and then the second dental treatment index 20 may be superimposed on the first dental treatment index 10 and attached, after which the steps S3 and S4 shown in Figure 5(a) described above may be performed in order. In such a dental treatment process, excess photocurable resin and air are discharged from the through holes 11 and 12.

[0025] Next, with reference to Figure 6, a method for manufacturing the first dental treatment index 10 and the second dental treatment index 20 according to an embodiment of the present invention having the above configuration will be described.

[0026] First, the manufacturing method of the first index 10 for dental treatment will be explained with reference to Figure 6(a). The tooth imaging process shown in step 5 of Figure 6(a) captures an image of the patient's dentition (dentition D shown in Figure 1(a)), including the tooth to be restored, before restoration. Subsequently, the three-dimensional shape data generation process for the tooth before restoration, as shown in step 6 of Figure 6(a), generates three-dimensional shape data of the dentition including the tooth to be restored before restoration, based on multiple images taken in the tooth imaging process. Subsequently, the three-dimensional shape data generation process for the restored tooth, as shown in step 7 of Figure 6(a), generates three-dimensional shape data for the patient's dentition (dentition D1 shown in Figure 1(b)), including the tooth to be restored, based on the three-dimensional shape data generated in the three-dimensional shape data generation process for the tooth before restoration. Subsequently, the three-dimensional shape data generation process for the first index shown in step 8 of Figure 6(a) generates the three-dimensional shape data for the first index 10 for dental treatment based on the three-dimensional shape data generated in the three-dimensional shape data generation process for the restored tooth. More specifically, the three-dimensional shape data for the first index 10 for dental treatment is generated by subtracting the three-dimensional shape data generated in the three-dimensional shape data generation process for the restored tooth from an object that has been expanded outward by approximately 1 mm to 3 mm based on the three-dimensional shape data generated in the three-dimensional shape data generation process for the restored tooth. Subsequently, in the first index printing process shown in step 9 in Figure 6(a), the first index 10 for dental treatment is fabricated using a light-transmitting material with a 3D printer, based on the three-dimensional shape data of the first index 10 for dental treatment generated in the three-dimensional shape data generation process for the first index 10 for dental treatment. Based on the above, the first index 10 for dental treatment is manufactured.

[0027] Next, with reference to Figure 6(b), the manufacturing method of the second index 20 for dental treatment will be described. In the step 10 of Figure 6(b), the process for generating three-dimensional shape data of the second index based on the three-dimensional shape data of the first index is performed. Based on the three-dimensional shape data of the first index 10 for dental treatment generated in the three-dimensional shape data generation process for the first index 10 for dental treatment, the three-dimensional shape data of the second index 20 for dental treatment is generated. More specifically, the three-dimensional shape data of the second index 20 for dental treatment is generated by subtracting the three-dimensional shape data of the first index 10 for dental treatment from an object that has been expanded outward by approximately 1 mm to 3 mm based on the three-dimensional shape data of the first index 10 for dental treatment. Subsequently, in the second index printing process shown in step 11 of Figure 6(b), the second index 20 for dental treatment is fabricated using a 3D printer based on the three-dimensional shape data of the second index 20 for dental treatment generated in the three-dimensional shape data generation process for the second index 20 for dental treatment, using a light-transmitting material with higher hardness than the light-transmitting material used to manufacture the first index 10 for dental treatment. Based on the above, the second index 20 for dental treatment is manufactured.

[0028] The first dental treatment index 10, the second dental treatment index 20, the dental treatment set 1, the method for manufacturing the first dental treatment index 10, and the method for manufacturing the second dental treatment index 20 according to the embodiment of the present invention, having the above configuration, provide the following effects.

[0029] By configuring the first index 10 for dental treatment to have multiple through-holes 11, the multiple through-holes 11 can be used as injection and discharge ports for the photocurable resin and as air discharge ports, making it possible to spread the photocurable resin throughout the area to be restored. Therefore, a highly convenient first index 10 for dental treatment can be made. Furthermore, because the first index 10 for dental treatment is made of a light-transmitting material, the tooth to be restored and the injection state of the light-curing resin can be visually confirmed during dental treatment. Therefore, the first index 10 for dental treatment can be made even more convenient. Furthermore, because the first dental treatment index 10 is integrally molded using a 3D printer, it is possible to create a highly accurate first dental treatment index 10 that can closely adhere to the dentition and reproduce the shape of the dentition. This makes it suitable for use in areas with large interdental spaces and for bridge restorations, and also prevents the photocurable resin from overflowing onto adjacent teeth. Moreover, it is possible to prevent air bubbles from being mixed into the photocurable resin due to negative pressure during treatment. These effects are particularly beneficial in the restoration of anterior teeth T, which have a large shape and are elongated vertically.

[0030] Furthermore, the shape of the lower edge line 12 of the first index for dental treatment is such that it follows the gum line L of multiple teeth T, including the tooth to be restored, and when the index is covered over multiple teeth T, the lower edge line 12 overlaps with the gum line L, thereby allowing appropriate pressure to be applied to the gum line of multiple teeth T, including the tooth to be restored, during dental treatment.

[0031] Furthermore, the configuration of the second dental treatment index 20, when superimposed on the first dental treatment index 10, includes multiple through-holes 12 of the same shape and size as the multiple through-holes 11 of the first dental treatment index 10, positioned opposite each of the multiple through-holes 11. This allows the multiple through-holes 12 to be used as injection and discharge ports for the photocurable resin and as air discharge ports, enabling the photocurable resin to spread throughout the area to be restored. Thus, the second dental treatment index 20 can be made highly convenient. Furthermore, by forming the second dental treatment index 20 with a light-transmitting material that has a higher hardness than the light-transmitting material that forms the first dental treatment index 10, appropriate pressure can be applied to the first dental treatment index 10 from all directions when the second dental treatment index 20 is superimposed on the first dental treatment index 10, as shown by the black arrows in Figure 4(c). In addition, the tooth T to be restored and the injection state of the light-curing resin can be visually confirmed during dental treatment. Therefore, the second dental treatment index 20 can be made even more convenient. Furthermore, because the second dental treatment index 20 is integrally molded using a 3D printer, it is possible to achieve a high degree of accuracy in reproducing the designed shape and to create a highly precise second dental treatment index 20 that can be closely attached to the first dental treatment index 10. Moreover, because it can be closely attached to the first dental treatment index 10, diffuse reflection can be suppressed, resulting in a second dental treatment index 20 with good visibility. Furthermore, if the longitudinal length of the second dental treatment index 20 is made longer than the longitudinal length of the first dental treatment index 10, and the second dental treatment index 20 is configured to directly contact the tooth T that is not to be restored, then it is possible to prevent the first dental treatment index 10 from moving laterally (horizontally) and to stabilize it.

[0032] Furthermore, with the dental treatment set 1, which consists of a first dental treatment index 10 and a second dental treatment index 20, the combined effects of the first dental treatment index 10 and the second dental treatment index 20 enable high-quality tooth restoration regardless of the practitioner's skill. This effect is particularly beneficial in the restoration of areas with large interdental spaces, bridge restorations, and anterior tooth restorations. It is also beneficial in that it solves the problems associated with conventional two-layer type indexes and holder type indexes.

[0033] Furthermore, according to the manufacturing method for the first index 10 for dental treatment, by using a 3D printer, it is possible to efficiently manufacture a highly accurate first index 10 for dental treatment with high reproducibility of the shape of the dentition with minimal effort.

[0034] Furthermore, the manufacturing method for the dental treatment second index 20 involves using a 3D printer, which allows for the efficient production of high-precision dental treatment second index 20 with minimal effort. Furthermore, by configuring the system to generate the three-dimensional shape data of the second dental treatment index 20 based on the three-dimensional shape data of the first dental treatment index 10, it becomes possible to effectively reduce the volume of the second dental treatment index 20. Therefore, the second dental treatment index 20 can be made more efficient for the practitioner. This effect is beneficial because it solves problems that may have arisen in clinical practice when conventional holder-type indexes are used on the anterior teeth.

[0035] In the embodiments of the present invention described above, the outer surface 14 of the first dental treatment index 10 is configured to have the same shape as the outer surface shape of multiple teeth T (dentition T1) including the tooth T1 after restoration of the tooth to be restored. However, the invention is not necessarily limited to this configuration. For example, the outer surface 14 may be formed as a smooth surface. Such a smooth surface can be formed by applying a smoothing process to the outer surface 14. This configuration increases the transparency of the dental treatment first index 10 itself. This makes it easier to see the tooth T to be restored and the injection state of the light-curing resin, resulting in a dental treatment first index 10 that is more visible and convenient.

[0036] Alternatively, the outer surface 14 of the first dental treatment index 10 may be provided with multiple irregularities. Such irregularities can be integrally molded using a 3D printer. This configuration makes it possible to transmit the external force applied from the second dental treatment index 20 to the first dental treatment index 10 through a collection of points.

[0037] Furthermore, in the embodiments of the present invention described above, the inner surface 23 and outer surface 24 of the second dental treatment index 20 are configured to have the same shape as the outer surface 14 of the first dental treatment index 10, but the invention is not necessarily limited to such configurations. For example, when the outer surface 14 of the first dental treatment index 10 is a smooth surface as described above, the inner surface 23 may be formed as a smooth surface. Alternatively, the outer surface 24 may be formed as a smooth surface. Such smooth surfaces can be formed by applying a smoothing process to the inner surface 23 and outer surface 24. This configuration increases the transparency of the dental treatment second index 20 itself. This makes the tooth T to be restored easier to see, and also allows for better visual confirmation of the injection state of the light-curing resin. Therefore, the dental treatment second index 20 can be made even more convenient.

[0038] Furthermore, in the embodiments of the present invention described above, a plurality of through holes 21 are provided on the outer surface 24 of the second index 20 for dental treatment. However, the invention is not limited to this configuration, and a configuration without through holes 21 on the outer surface 24 is also possible.

[0039] Alternatively, the inner surface 23 of the second index 20 for dental treatment may be configured with multiple irregularities. Such irregularities can be integrally molded using a 3D printer. This configuration makes it possible to transmit the external force applied from the second dental treatment index 20 to the first dental treatment index 10 through a collection of points.

[0040] Furthermore, the configuration of the dental treatment set 1 may also include an intervening resin member made of a highly viscous, transparent resin material, which has a shape that allows it to be interposed between the first dental treatment index 10 and the second dental treatment index 20. Such intervening resin components can be manufactured, for example, by the following method. First, in the temporary superposition process, a predetermined gap is created between the first dental treatment index 10 and the second dental treatment index 20, which is then superimposed. Subsequently, a liquid injection process is performed to inject a highly viscous, transparent liquid into the gap between the first dental treatment index 10 and the second dental treatment index 20. Subsequently, in the superposition process, the second dental treatment index 20 is pressed by a predetermined amount toward the side of the first dental treatment index 10, thereby superimposing the second dental treatment index 20 onto the first dental treatment index 10. At this time, the amount of pressure is adjusted according to the desired thickness of the intervening resin member. Subsequently, the highly viscous, transparent liquid is hardened through a liquid hardening process. The intervening resin component is manufactured as described above. Of course, the manufacturing method for the intervening resin component is not limited to the above steps and can be modified as appropriate. For example, silicone can be used as a transparent resin material with high viscosity. This configuration allows for increased transparency of dental treatment set 1, as well as improved adhesion between the first dental treatment index 10 and the second dental treatment index 20. [Industrial applicability]

[0041] According to the present invention, high-quality tooth restoration is possible regardless of the skill of the practitioner, and a dental treatment index, dental treatment set, and a method for manufacturing the dental treatment index can be provided with high manufacturing efficiency. Therefore, it is useful in industrial fields related to dental treatment indexes and has great industrial applicability. [Explanation of symbols]

[0042] 1 Dental Treatment Set 10 First Index for Dental Treatment 11 Through hole 12 Lower edge line 13. Inner self 14 Exterior 20 Second Index for Dental Treatment 21 Through hole 22 Lower edge line 23 Inner self 24 Exterior 30 Photocurable resin injector 100 Dental Treatment Set 110 Dental Treatment Index 120 Fixing clips D dentition D1 dentition G gums L Gum line S Interdental space T tooth T1 Restoration Teeth

Claims

1. A first index for dental treatment, characterized by having a shape capable of integrally covering multiple teeth, including a tooth to be restored; having a gap between the tooth to be restored and the inner wall that allows for the interposition of a light-curable resin when the multiple teeth are covered; having multiple through holes at positions facing the upper surface of the tooth to be restored; being made of a light-transmitting material; and being integrally molded by a 3D printer.

2. The first dental treatment index according to claim 1, characterized in that the shape of the lower peripheral line follows the gum line of multiple teeth, including the tooth to be restored, and when covered on multiple teeth, the lower peripheral line overlaps with the gum line.

3. The first index for dental treatment according to claim 1 or 2, characterized in that its outer surface is composed of a smooth surface.

4. The first index for dental treatment according to claim 1 or 2, characterized in that it has a plurality of irregularities on its outer surface.

5. A second index for dental treatment, characterized in that it has a shape that can be superimposed on the first index for dental treatment described in claim 1, is made of a light-transmitting material with a higher hardness than the light-transmitting material that forms the first index for dental treatment, and is integrally molded by a 3D printer.

6. The second index for dental treatment according to claim 5, characterized in that, when superimposed on the first index for dental treatment, it has a plurality of through holes at positions facing the plurality of through holes provided by the first index for dental treatment.

7. The second index for dental treatment according to claim 5 or 6, characterized in that at least one of the inner and outer surfaces is composed of a smooth surface.

8. The second index for dental treatment according to claim 5 or 6, characterized in that it has multiple irregularities on its inner surface.

9. A dental treatment set characterized by comprising a first dental treatment index as described in claim 1 and a second dental treatment index as described in claim 5.

10. The dental treatment set according to claim 9, further comprising an interposing resin member having a shape that allows it to be interposed between a first dental treatment index and a second dental treatment index, and composed of a transparent resin material with high viscosity.

11. A method for manufacturing a first index for dental treatment according to claim 1, comprising: a tooth imaging step of capturing images of a patient's dentition including teeth to be restored before restoration; a three-dimensional shape data generation step of teeth before restoration, based on a plurality of images captured in the tooth imaging step, generating three-dimensional shape data of the dentition including teeth to be restored before restoration; a three-dimensional shape data generation step of teeth after restoration, based on the three-dimensional shape data generated in the three-dimensional shape data generation step of teeth before restoration, generating three-dimensional shape data of the patient's dentition including teeth to be restored after restoration; a three-dimensional shape data generation step of the first index for dental treatment, based on the three-dimensional shape data generated in the three-dimensional shape data generation step of teeth after restoration, generating three-dimensional shape data of the first index for dental treatment; and a first index for dental treatment printing step of printing the first index for dental treatment using a light-transmitting material with a 3D printer, based on the three-dimensional shape data of the first index for dental treatment generated in the three-dimensional shape data generation step of the first index for dental treatment.

12. A method for manufacturing a second index for dental treatment according to claim 5, comprising: a three-dimensional shape data generation step for a second index for dental treatment, which generates three-dimensional shape data for a second index for dental treatment based on the three-dimensional shape data for a first index for dental treatment generated by the three-dimensional shape data generation step for a first index for dental treatment according to claim 11; and a second index for dental treatment printing step for manufacturing a second index for dental treatment, which uses a light-transmitting material with higher hardness than the light-transmitting material used to manufacture the first index for dental treatment, based on the three-dimensional shape data for a second index for dental treatment generated by the three-dimensional shape data generation step for a second index for dental treatment, using a 3D printer.

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