Dental treatment index, dental treatment kit, and method for manufacturing dental treatment index
The dental treatment set with 3D-printed, light-transmitting resin indexes addresses skill-dependent variations and manufacturing challenges, ensuring high-quality tooth restoration and efficient resin distribution, particularly in complex dental scenarios.
Patent Information
- Authority / Receiving Office
- WO · WO
- Patent Type
- Applications
- Current Assignee / Owner
- AMIDEX
- Filing Date
- 2025-12-03
- Publication Date
- 2026-06-11
Smart Images
Figure JP2025042080_11062026_PF_FP_ABST
Abstract
Description
Dental treatment index, dental treatment set, and method for manufacturing the dental treatment index 【0001】 The present invention relates to an index for dental treatment, a dental treatment set, and a method for manufacturing the dental treatment index. 【0002】 In the field of dental treatment, the use of light-curing resins or composite resins (hereinafter referred to as "photocurable resins"), such as composite resin, to repair teeth damaged by caries, fractures, etc., is becoming widespread (see, for example, Patent Document 1 below). In this technique, the photocurable resin is attached to the tooth before repair in its uncured state, and the tooth is repaired by hardening it while maintaining a predetermined shape. 【0003】 Japanese Patent Publication No. 2020-83802 Japanese Patent Publication No. 2023-26932 【0004】However, such tooth restorations are highly dependent on the skill of the practitioner performing the restorative treatment, resulting in variations in the final result depending on the practitioner. To address this problem, the inventors of the present invention have proposed in Patent Document 2 above a method for manufacturing a dental treatment index that enables highly accurate restoration with minimal effort. Specifically, the method comprises the steps of: manufacturing a tooth model corresponding to the tooth shape of the treatment target; placing a first index, manufactured from a first light-transmitting material, so as to cover at least a portion of the tooth model, and injecting a light-transmitting polymer-curing resin between the first index and the tooth model; and curing the polymer-curing resin to produce a second index. When restoring a tooth, the index formed by superimposing the first and second indexes (hereinafter referred to as a two-layer type index) is attached to the patient's tooth, and then a light-curing resin is injected into the gap between the second index and the patient's tooth to perform the tooth restoration. However, with the two-layer type index, there was a problem in the manufacturing process that prevented the production of a second index for use in areas with large interdental spaces or a second index for use in bridge restorations. To address this problem, the inventors of the present invention have proposed a dental treatment set 100 (hereinafter referred to as a holder-type index) comprising a dental treatment index 110 made of a soft, light-transmitting resin that is placed over the patient's teeth before restoration, as shown in Figure 7, and a fixing clip 120 made of a hard, light-transmitting resin for fixing the dental treatment index 110. With this holder-type index, the dental treatment index 110 is manufactured using a 3D printer based on the three-dimensional shape data of the patient's teeth before restoration, which has the advantage of being able to efficiently manufacture dental treatment indexes 110 for use in areas with large interdental spaces or for use in bridge restorations.However, in the holder type index, as shown by the black arrow in FIG. 7, since the fixing clip 120 is moved in the vertical direction to hold the dental treatment index 110, in the anterior tooth restoration, deflection occurs, resulting in the overflow of the photocurable resin to the adjacent teeth, and there is also a problem that the incisal edge is reproduced short. In addition, when manufacturing the fixing clip 120 curved according to the dentition of the anterior teeth, the size and thickness become large, and there may be a situation where it is difficult to hold in actual clinical practice. Therefore, an object of the present invention is to solve the problems of the above-mentioned conventional technology and 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 operator and have good manufacturing efficiency. 【0005】To achieve the above objectives, the first dental treatment index of the present invention has a shape that can integrally cover multiple teeth, including the tooth to be restored, has a gap between the tooth to be restored and the inner wall that allows for the interposition of a photocurable resin when covered on the multiple teeth, has multiple through holes at positions facing the upper surface of the tooth to be restored, is made of a light-transmitting material, and is integrally molded by a 3D printer as its first feature. In addition to the first feature of the present invention, the first dental treatment index of the present invention has a second feature in that the shape of the lower edge line follows the gum line of the multiple teeth, including the tooth to be restored, and when covered on the multiple teeth, the lower edge line overlaps with the gum line. In addition to the first or second feature of the present invention, the first dental treatment index of the present invention has a third feature in that its outer surface is made of a smooth surface. In addition to the first or second feature of the present invention, the first dental treatment index of the present invention has a fourth feature in that its outer surface has multiple irregularities. 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, a sixth feature of the present invention is that, in addition to the fifth feature, the second index for dental treatment has a plurality of through holes at positions facing the plurality of through holes provided by the first index for dental treatment when superimposed on the first index for dental treatment. Furthermore, a seventh feature of the present invention is that, in addition to the fifth or sixth feature, at least one surface of the inner and outer surfaces of the second index for dental treatment is made of a smooth surface. Furthermore, an eighth feature of the present invention is that, in addition to the fifth or sixth feature, the inner surface of the second index for dental treatment has a plurality of irregularities. Furthermore, a ninth feature of the present invention is that the dental treatment set is composed of the first index for dental treatment described in claim 1 and the second index for dental treatment 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, which is that it further comprises an interposing resin member having a shape that can be interposed between the first dental treatment index and the second dental treatment index, and which is made of a transparent resin material with high viscosity. Furthermore, the method for manufacturing the first dental treatment index of the present invention is the method for manufacturing the first dental treatment index as described in claim 1, comprising: a tooth imaging step of taking 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 that generates three-dimensional shape data of the dentition including the teeth to be restored before restoration based on a plurality of images taken in the tooth imaging step; and the three-dimensional shape data generation step of teeth before restoration The eleventh feature is that it comprises: a three-dimensional shape data generation step for teeth after restoration, which generates 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 process; a three-dimensional shape data generation step for a first dental treatment index, which generates three-dimensional shape data of a first dental treatment index, based on the three-dimensional shape data generated in the three-dimensional shape data generation step for teeth after restoration; and a first dental treatment index printing step, which prints the first dental treatment index using a light-transmitting material with a 3D printer, based on the three-dimensional shape data of the first dental treatment index generated in the three-dimensional shape data generation step for the first dental treatment index. 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. 【0006】 According to the first dental treatment index 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 distribute the photocurable resin to the area to be restored. Therefore, it can be made into a highly convenient first dental treatment index. Furthermore, because it is made of a light-transmitting material, the tooth to be restored and the injection state of the photocurable resin can be visually confirmed during dental treatment. Therefore, it can be made into an even more convenient first dental treatment index. In addition, because it is integrally molded by a 3D printer, it can be made into a highly accurate first dental treatment index that can closely adhere to the shape of the dentition and reproduce the shape of 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 covered on 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 index for dental treatment described in claim 3, in addition to the effects of the configuration described in claim 1 or 2, the transparency of the first index for dental treatment 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 index for dental treatment 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, it can be made into a second dental treatment index that is even more convenient. Moreover, because it is integrally molded by a 3D printer, the degree of reproduction of the designed shape is high, and it can be made into a highly accurate second dental treatment index that can be closely attached to the first dental treatment index. In addition, because it can be closely attached to the first dental treatment index, diffuse reflection can be suppressed, and it can be made into a second dental treatment index 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】Furthermore, according to the second dental treatment index described in claim 8, in addition to the effects of the configuration described in claim 5 or 6, having multiple irregularities on the inner surface makes it possible to transmit the external force applied to the first dental treatment index by a collection of points when superimposed on the first dental treatment index. 【0014】 Furthermore, according to the dental treatment set described in claim 9, high-quality tooth restoration is possible regardless of the skill of the practitioner. 【0015】 Furthermore, according to the dental treatment set described in claim 10, in addition to the effects and benefits of the configuration described in claim 9, the transparency of the dental treatment set can be increased, and the degree of contact between the first dental treatment index and the second dental treatment index can be increased. 【0016】 Furthermore, according to the method for manufacturing the first index for dental treatment described in claim 11, a first index for dental treatment with high accuracy and high reproducibility of the shape of the dentition can be manufactured efficiently with less load. 【0017】 Furthermore, according to the method for manufacturing a second index for dental treatment described in claim 12, a second index for dental treatment with high accuracy can be manufactured efficiently with minimal effort. 【0018】The first diagram shows the dentition and dental treatment set before and after restoration according to an embodiment of the present invention, where (a) shows the dentition before restoration, (b) shows the dentition after restoration, and (c) shows the dental treatment set attached to the teeth. The second diagram shows 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 top view. The third diagram shows 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 top view. The fourth diagram shows the dental treatment process using the dental treatment set according to an embodiment of the present invention, where (a) shows the first index for dental treatment attached to the dentition, (b) shows the second index for dental treatment superimposed on the first index for dental treatment, and (c) shows the state in which a photocurable resin is injected into the dental treatment set. The first figure 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 dental treatment index. The second figure shows the manufacturing process of the first dental treatment index and the 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. The third figure shows a perspective view of a conventional holter-type index. 【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 description, as shown in Figures 1(a) and 1(b), the explanation 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 in 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, a 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 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 photocurable resin filled (interposed) inside into a desired shape. Since the inside of this first dental treatment index 10 needs to be able to reproduce the dental arch D1 after restoration, the shape of the inner surface 13 shown in Figure 2(b) is the same as the outer surface shape of the multiple teeth T (dentition T1), including the tooth T1 after restoration 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 the multiple teeth T (dentition T1), including the tooth T1 after restoration of the tooth to be restored. Furthermore, as shown in Figure 2(c), the first dental treatment index 10 is provided with multiple through holes 11 at positions facing 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. 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 should be two or more. In this embodiment, as shown by the dashed line in Figure 1, the shape of the lower edge line 12 follows the gum line L of multiple teeth, including the tooth to be restored, and the lower edge 12 is configured to overlap with the gum line L when attached to the dental arch D. In this embodiment, the first dental treatment index 10 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. The length of the longitudinal direction of the first dental treatment index 10 is not limited to the configuration of this embodiment and can be changed as appropriate. However, preferably, the length is such that it can integrally cover at least the first adjacent teeth located to the left and right of the tooth to be restored, and the second adjacent teeth located to the left and right of those first adjacent teeth (a length that can cover a total of five teeth T, including the tooth to be restored). 【0023】The dental treatment second index 20 is a component that applies even pressure to the dental treatment first index 10 from all directions by being attached in close contact with the dental treatment first index 10. Since the inner surface of the dental treatment second index 20 needs to be in close contact with the dental treatment first 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 dental treatment first index 10. In this embodiment, the outer surface 24 is also configured to have the same shape as the outer surface 14 of the dental treatment first 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 that are the same shape and size as each of the multiple through holes 11 provided by the dental treatment first index 10, at positions facing each of the multiple through holes 11 provided by the dental treatment first index 10. More specifically, in this embodiment, it has three circular through holes 21. 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 should be two or more. In this embodiment, the second dental treatment index 20 is integrally molded by a 3D printer using a light-transmitting material with higher hardness than the light-transmitting material forming the first dental treatment index 10, for example, a hard-type light-transmitting resin. 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 the size 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). 【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, with reference to Figures 4(a) and 4(b), the first dental treatment index 10 is attached to a plurality of teeth T (dentition D shown in Figure 1(a)), including the tooth to be restored, in 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 the plurality of teeth T, including the tooth to be restored. After that, with reference 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, excluding the through-holes 11 and 21 through which the photocurable resin injector 30 is inserted. Then, in that state, the light irradiation process shown in step S3 of Figure 5(a) is performed, in which a predetermined amount of light for a predetermined time is irradiated from the outside of the dental treatment set 1 into the gap formed between the tooth to be restored and the first dental treatment index 10, thereby curing the photocurable resin interposed in the gap and restoring it to the target tooth shape. Then, the first and second dental treatment index removal process shown in step S4 of Figure 5(a) is performed, in which 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 that order. With the above, the dental treatment process using the dental treatment set 1 according to the embodiment of the present invention is completed, and the treated tooth T1 shown in Figure 1(b) is formed. Note that the dental treatment process using the 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, and thereafter 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). In the tooth imaging step shown in step 5 of Figure 6(a), an image of the patient's dentition (dentition D shown in Figure 1(a)), including the tooth to be restored before restoration, is captured. Then, in the three-dimensional shape data generation step of the tooth before restoration shown in step 6 of Figure 6(a), three-dimensional shape data of the dentition including the tooth to be restored before restoration is generated based on the multiple images captured in the tooth imaging step. Then, in the three-dimensional shape data generation step of the tooth after restoration shown in step 7 of Figure 6(a), three-dimensional shape data of the patient's dentition (dentition D1 shown in Figure 1(b)), including the tooth to be restored after restoration, is generated based on the three-dimensional shape data generated in the three-dimensional shape data generation step of the tooth before restoration. Then, in the three-dimensional shape data generation step of the first index shown in step 8 of Figure 6(a), three-dimensional shape data of the first index 10 for dental treatment is generated based on the three-dimensional shape data generated in the three-dimensional shape data generation step of the tooth after restoration. More specifically, based on the three-dimensional shape data generated by the three-dimensional shape data generation process of the restored tooth, the three-dimensional shape data generated by the three-dimensional shape data generation process of the restored tooth is subtracted from an object that has been expanded outward by approximately 1 mm to 3 mm to generate the three-dimensional shape data of the restored tooth. This subtraction is used to generate the three-dimensional shape data of the first dental treatment index 10. Subsequently, in the first index printing process shown in step 9 in Figure 6(a), the first dental treatment index 10 is fabricated using a light-transmitting material with a 3D printer, based on the three-dimensional shape data of the first dental treatment index 10 generated by the three-dimensional shape data generation process of the first dental treatment index 10. Thus, the first dental treatment index 10 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 three-dimensional shape data generation process for the second index based on the three-dimensional shape data of the first index shown in step 10 of Figure 6(b), the three-dimensional shape data of the second index 20 for dental treatment is generated 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. 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 about 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. This fabrication is done using a light-transmitting material with higher hardness than the light-transmitting material used to manufacture the first index 10 for dental treatment. Thus, 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】The first dental treatment index 10 is configured to have multiple through-holes 11, allowing these holes to be used as injection and discharge ports for the photocurable resin and as air outlets, enabling the photocurable resin to spread evenly across the area to be restored. This results in a highly convenient first dental treatment index 10. Furthermore, because the first dental treatment index 10 is made of a light-transmitting material, the tooth to be restored and the injection state of the photocurable resin can be visually confirmed during dental treatment. This results in an even more convenient first dental treatment index 10. Additionally, because the first dental treatment index 10 is integrally molded using a 3D printer, it offers high reproducibility of the shape of the dentition and can be made to adhere closely to the dentition, resulting in a highly accurate first dental treatment index 10. This makes it suitable for use in areas with large interdental spaces and bridge restorations, and also reduces the likelihood of photocurable resin overflowing onto adjacent teeth. Furthermore, negative pressure during treatment prevents air bubbles from being incorporated into the photocurable resin. This effect is particularly beneficial in the restoration of anterior teeth, which are large in shape and have a vertically elongated shape. 【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 is such that, when superimposed on the first dental treatment index 10, it has 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, a highly convenient second dental treatment index 20 can be made. In addition, by forming the second dental treatment index 20 with a light-transmitting material that has a higher hardness than the light-transmitting material forming 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 photocurable resin can be visually confirmed during dental treatment. Therefore, a second index 20 for dental treatment can be made even more convenient. Furthermore, because the second index 20 for dental treatment is integrally molded by a 3D printer, the degree of reproduction of the designed shape is high, and a highly accurate second index 20 for dental treatment can be made that can be closely attached to the first index 10 for dental treatment. Moreover, because it can be closely attached to the first index 10 for dental treatment, diffuse reflection can be suppressed, resulting in a second index 20 for dental treatment with good visibility. In addition, if the length of the second index 20 for dental treatment is made longer than the length of the first index 10 for dental treatment, and the second index 20 for dental treatment is configured to directly contact the tooth T that is not to be restored, it is possible to prevent the first index 10 for dental treatment 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 of 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 second dental treatment index 20, by using a 3D printer, allows for the efficient production of a highly accurate second dental treatment index 20 with minimal effort. Additionally, by generating 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, the volume of the second dental treatment index 20 can be effectively reduced. Therefore, the second dental treatment index 20 can be made more efficient for the practitioner. These effects are beneficial because they solve 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 present invention is not 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. By adopting such a configuration, the transparency of the first dental treatment index 10 itself can be increased. This makes it possible to make the tooth T to be restored and the injection state of the light-curable resin more visible, resulting in a first dental treatment 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. With this configuration, it becomes 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. By adopting such configurations, the transparency of the second dental treatment index 20 itself can be increased. This makes it easier to see the tooth T to be restored, and also allows for better visual confirmation of the injection state of the light-curable resin. Therefore, a second dental treatment index 20 with even greater convenience can be made. 【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 dental treatment index 20 may be provided with multiple irregularities. Such irregularities can be integrally molded using a 3D printer. With this configuration, it becomes 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 include an intervening resin member that has a shape that allows it to be interposed between the first dental treatment index 10 and the second dental treatment index 20, and is made of a highly viscous transparent resin material. Such an intervening resin member can be manufactured, for example, by the following method. First, in a temporary superposition step, the second dental treatment index 20 is superimposed on the first dental treatment index 10 with a predetermined gap. Then, in a liquid injection step, a highly viscous transparent liquid is injected into the gap between the first dental treatment index 10 and the second dental treatment index 20. Then, in a superposition step, the second dental treatment index 20 is pressed by a predetermined amount toward the first dental treatment index 10 to superimpose 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. Then, in a liquid curing step, the highly viscous transparent liquid is cured. The intervening resin member is manufactured by the above method. Of course, the manufacturing method for the intervening resin component is not limited to the above process and can be modified as appropriate. For example, silicone can be used as a transparent resin material with high viscosity. This configuration makes it possible to increase the transparency of the dental treatment set 1 and to increase the adhesion between the first dental treatment index 10 and the second dental treatment index 20. 【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. 【0042】 1 Dental treatment set 10 First index for dental treatment 11 Through hole 12 Lower edge line 13 Inner surface 14 Outer surface 20 Second index for dental treatment 21 Through hole 22 Lower edge line 23 Inner surface 24 Outer surface 30 Light-curing resin injector 100 Dental treatment set 110 Index for dental treatment 120 Fixing clip D Dentition D1 Dentition G Gums L Gum line S Interdental space T Tooth T1 Restored tooth
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 photocurable resin when the index is covered over the multiple teeth; 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 dental treatment index according to claim 5, characterized in that, when superimposed on the first dental treatment index, it has a plurality of through holes at positions facing the plurality of through holes provided by the first dental treatment index.
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 a plurality of 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 taking images of a patient's dentition including the teeth to be restored before restoration; a three-dimensional shape data generation step of teeth before restoration, based on a plurality of images taken in the tooth imaging step, generating three-dimensional shape data of the dentition including the 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 the 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, 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.