Orthodontic wire formation tool

Abstract

To provide an orthodontic wire formation method, an orthodontic wire formation tool and a tooth-form model production method capable of easily producing a setup tooth-form model and correctly forming an orthodontic wire.SOLUTION: A tooth-form impression of a patient P is collected by a 3D scanner 2 as three-dimensional data, the three-dimensional data is modified to obtain a target teeth alignment after orthodontics to create original tooth-form model data 6, an original tooth-form model 8 is produced by means of a 3D printer 7 on the basis of the original tooth-form model data 6, a plurality of model teeth 9 in the original tooth-form model 8 is individually divided, a setup tooth-form model 11 where each model teeth 9 is arranged on a pseudo gingiva 10 is produced, and a wire material 5 is bent on the basis of the setup tooth-form model 11 to form an orthodontic wire 12.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to an orthodontic wire forming method, an orthodontic wire forming tool, and a method for making a dental model, for forming an orthodontic wire for orthodontic treatment by attaching it to the lingual side of a dentition. [Background technology]

[0002] Various methods have been proposed for forming this type of orthodontic wire.

[0003] For example, Patent Document 1 discloses a method of forming an orthodontic wire in which an original dental model is produced by pouring hard stone into a taken dental impression, then each model tooth of the original dental model is individually divided and each model tooth is rearranged on the artificial gums to achieve the target tooth alignment after orthodontic treatment to produce a set-up dental model, and then a number of pedestals on the artificial gums of the set-up dental model on which a wire to be used for orthodontic treatment can be positioned and placed are formed so as to be located inside each model tooth. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Patent No. 5466121 Summary of the Invention [Problem to be solved by the invention]

[0005] However, in this method of forming orthodontic wires, which involves pouring hard stone into a dental impression to create an original dental model, it takes time to create the set-up dental model and requires skill.

[0006] Furthermore, when making the base, a roughly triangular ring that forms the base of the base seat is placed at a position on the artificial gum that is inside the model tooth, and unhardened resin is applied to the top of the tip of the ring that protrudes from the artificial gum to form an unhardened seat.The wire is then placed on the unhardened seat and exposed to ultraviolet light, forming a base with a seat that has a recess that corresponds to the outer shape of the wire after hardening.This makes it difficult to position the base and makes it difficult to form the orthodontic wire accurately.

[0007] The present invention has been made based on the above circumstances, and its object is to provide an orthodontic wire forming method, an orthodontic wire forming tool, and a dental model making method that can easily create a set-up dental model and accurately form an orthodontic wire. [Means for solving the problem]

[0008] In order to solve the above problems, the orthodontic wire forming method of the present invention is characterized by comprising: a dental impression taking step of taking a patient's dental impression as 3D data using a 3D scanner; a data correction step of correcting the 3D data to achieve the target tooth alignment after orthodontic treatment to create corrected dental model data; an original dental model making step of creating an original dental model using a 3D printer based on the corrected dental model data; a set-up dental model making step of individually dividing a plurality of model teeth of the original dental model and creating a set-up dental model in which each model tooth is arranged in a pseudo-gingiva; and a wire forming step of forming an orthodontic wire by bending a wire material based on the set-up dental model.

[0009] In addition, the orthodontic wire forming tool of the present invention comprises a stand for supporting a wire material inside the set-up dental model, and a support base for supporting the stand in a slidable manner, and the support base has a pair of guide grooves along the front-to-back direction inside the set-up dental model, and the stand comprises a front stand member erected at the front part of the support base, and a pair of side stand members erected at the sides of the support base, and the front stand member has a front standing portion whose lower part is fixed to the support base, and a front extension portion that extends forward from the upper part of the front standing portion and on which the wire material is placed, and the side stand member has a side standing portion whose lower part is guided slidably in the guide grooves of the support base, and a side extension portion that extends outward from the upper part of the side standing portion and on which the wire material is placed.

[0010] Furthermore, the orthodontic wire forming tool according to the present invention is characterized in that it comprises a tray for taking a dental impression of an original dental model, and a dental impression plate on which an impression of the original dental model is formed and which is removably attached to the tray for positioning the original dental model.

[0011] Furthermore, the dental model production method of the present invention is characterized by comprising a dental impression taking step of taking a dental impression of a patient as 3D data using a 3D scanner, a data correction step of correcting the 3D data to achieve the target tooth alignment after orthodontic treatment to create corrected data, and an original dental model production step of producing an original dental model using a 3D printer based on the corrected data. Effect of the Invention

[0012] According to the orthodontic wire forming method, the orthodontic wire forming tool, and the dental model making method of the present invention, a set-up dental model can be easily made, and an orthodontic wire can be accurately formed. [Brief description of the drawings]

[0013] The drawings show specific embodiments of the present invention, including essential features of the invention as well as alternative and preferred embodiments. [Figure 1] 2 is a flow chart illustrating a method for forming orthodontic wires and attaching brackets according to one embodiment of the present invention. [Diagram 2] Schematic diagram showing how to take a dental impression in the orthodontic wire forming method. FIG. [Diagram 3] FIG. 2 shows dental impression data collected using the orthodontic wire forming method. [Figure 4] FIG. 13 shows original dental model data created by correcting data from the orthodontic wire forming method. [Diagram 5] A diagram showing an original dental model created using a 3D printer using the same orthodontic wire forming method. [Figure 6] FIG. 2 shows a model tooth of the original dental mold model. [Figure 7] FIG. 2 shows a set-up dental model for the orthodontic wire forming method. [Figure 8] FIG. 13 is a diagram showing how a wire material is stretched across the same set-up dental model. [Figure 9] FIG. 13 is a diagram showing how the set-up dental model is fine-tuned. [Figure 10] FIG. 13 is a diagram showing how a core is created using the same set-up dental model. [Figure 11] FIG. [Figure 12] FIG. [Figure 13] A figure showing the state in which the core has been removed from the set-up dental model together with the orthodontic wire. [Figure 14] A figure showing the state in which the core has been removed from the orthodontic wire together with the bracket. [Figure 15] A diagram showing how the core is attached to a patient's tooth. [Figure 16] A figure showing the core attached to a patient's tooth. [Figure 17] FIG. 13 shows the core with excess parts removed. [Figure 18]2 is a perspective view showing a stand and a support base of the orthodontic wire forming tool used in the orthodontic wire forming method. FIG. [Figure 19] FIG. 4 is a perspective view showing a base of the teeth forming wire forming tool. [Figure 20] FIG. 2 is a diagram showing a tray and a dental impression plate of the same dental arch forming wire forming tool. [Figure 21] FIG. [Figure 22] FIG. [Diagram 23] FIG. 13 is a diagram showing the alignment of the original dental model to the dental impression plate. [Figure 24] FIG. 13 is a diagram showing the alignment of the model teeth of the original dental model to the dental impression plate. [Diagram 25] FIG. 11 is a diagram showing how the same setup dental model is produced. [Figure 26] 10A to 10C are diagrams showing the procedure for producing the same setup dental model. [Figure 27] 10A to 10C are diagrams showing the procedure for producing the same setup dental model. [Figure 28] 10A to 10C are diagrams showing the procedure for producing the same setup dental model. [Figure 29] 10A to 10C are diagrams showing the procedure for producing the same setup dental model. [Diagram 30] 10A to 10C are diagrams showing the procedure for producing the same setup dental model. [Diagram 31] 10A to 10C are diagrams showing the procedure for producing the same setup dental model. [Diagram 32] 10A to 10C are diagrams showing the procedure for producing the same setup dental model. [Diagram 33] 10A to 10C are diagrams showing the procedure for producing the same setup dental model. [Diagram 34] FIG. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0014] Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

[0015] A method for forming an orthodontic wire according to an embodiment of the present invention is carried out according to the flowchart shown in FIG.

[0016] First, in step ST1, as shown in FIG. 2, the inside of the oral cavity of patient P is scanned with a 3D scanner 2 while looking at a touch panel 1, and as shown in FIG. 3, dental impression data 3, which is 3D data of the dental impression, is collected and imported into a computer (not shown), and the process proceeds to step ST2.

[0017] In step ST2, the collected 3D data is processed in a computer by operating the touch panel 1, and the 3D data is corrected to achieve the target tooth alignment after orthodontic treatment, as shown in Figure 4, to create original dental impression model data (corrected dental impression model data) 6, and then the process proceeds to step ST3.

[0018] In step ST3, an original dental impression model 8 is produced using a 3D printer 7 based on the original dental impression model data 6, which is the corrected 3D data, as shown in FIG. 5, and the process proceeds to step ST4.

[0019] In step ST4, as shown in FIG. 6, the multiple model teeth 9 of the original dental impression model 8 are individually divided, and as shown in FIG. 7, a set-up dental impression model 11 is created in which each model tooth 9 is arranged on artificial gums 10, and then the process proceeds to step ST5.

[0020] In step ST5, as shown in FIG. 8, a wire material 5 for use in orthodontics is bridged over the set-up dental model 11 and bent to fit the set-up dental model 11 to form an orthodontic wire 12, and the process proceeds to step ST6.

[0021] An orthodontic bracket 41 for attaching the orthodontic wire 12 to the patient's teeth is attached to this wire material 5 (orthodontic wire 12), and the positioning of this orthodontic bracket 41 is also performed.

[0022] In addition, the orthodontic wire 12 is formed using an orthodontic wire forming tool 13, which will be described later.

[0023] In step ST6, as shown in FIG. 9, the arrangement of the model teeth 9 of the set-up dental model 11 is finely adjusted.

[0024] That is, fine adjustments are made to the wire material 5 (or the orthodontic wire 12) or the orthodontic bracket 41 and the model tooth 9 at locations where they are separated or in contact with each other.

[0025] In step ST7, as shown in FIG. 10, each model tooth 9 of the set-up dental model 11 is used to fabricate a core 42 for bonding the orthodontic bracket 4 to the tooth T of the patient P.

[0026] That is, core resin is supplied between the orthodontic bracket 41 and each model tooth 9 of the set-up dental model 11, and from the inside to the top of each model tooth 9, and then solidified to produce a core 42, as shown in Figures 11 and 12.

[0027] In step ST8, as shown in FIG. 13, the support 15 is removed from the base 23, and further, as shown in FIG. 14, the core 42 together with the orthodontic bracket 41 is removed from the orthodontic wire 12.

[0028] In step ST9, as shown in FIGS. 15 and 16, the core 42 is attached to the tooth T of the patient P together with the orthodontic bracket 41.

[0029] In step ST10, as shown in FIG. 17, an excess portion of the core 42 is removed.

[0030] As a result, the bracket 41 is attached to the tooth T of the patient P.

[0031] As shown in Figures 8, 9 and 18, the orthodontic wire forming tool 13 includes a stand 14 for supporting the wire material 5 (or the orthodontic wire 12) inside the set-up dental model 11, and a support base 15 for supporting the stand 14 in a slidable manner.

[0032] The support base 15 is provided with a pair of V-shaped guide grooves 16 that extend along the front-rear direction on the inside of the set-up dental model 11 .

[0033] The stand 14 includes a front stand member 17 erected at the front of the support base 15, and a pair of side stand members 18 erected at the sides of the support base 15.

[0034] The front stand member 17 also has a front upright portion 19 whose lower portion is fixed to the support base 15, and a front extension portion 20 which extends forward from the upper portion of the front upright portion 19, whose tip engages with the recess between adjacent front teeth and on which the wire material 5 is placed.

[0035] The side stand member 18 has a side standing portion 21, the lower part of which is guided so as to slide freely in the guide groove 16 of the support base 15, and a side extension portion 22 which extends outward from the upper part of this side standing portion 21, the tip of which engages with the recess between adjacent molars and on which the wire material 5 is placed.

[0036] The wire blank 5 is bent to fit the template, and an orthodontic bracket 41 is attached to the wire blank 5.

[0037] Then, the wire material 5 is adjusted so that the set-up dental model 11 and the wire material 5 match to some extent.

[0038] The wire material 5 is fixed to the front extension 20 of the front stand member 17 and the side extension 22 of the side stand member 18 by adhesion or the like.

[0039] Furthermore, the orthodontic wire forming tool 13 has a base 23 for fixing the artificial gums 10 of the set-up dental model 11 as shown in FIG. 7, and for supporting a support base 15 inside the set-up dental model 11 as shown in FIG. 8.

[0040] As shown in FIG. 19, the base 23 has a fitting recess 24 into which the support base 15 is fitted, and a storage portion 25 for storing an adhesive for bonding the support base 15.

[0041] Furthermore, as shown in Figures 20 to 22, the orthodontic wire forming tool 13 is provided with a tray 26 for taking a dental impression of the original dental model 8, and a dental impression plate 27 that is removably attached to the tray 26 for positioning the original dental model 8, and a dental impression plate 27 on which a dental impression of the original dental model 8 is formed.

[0042] That is, the dental impression plate 27 has a plate 28 for front teeth and a pair of plates 29 for back teeth, and the front teeth plate 28 has dental impressions of the tips of the front teeth of the original dental impression model 8 formed thereon, and the back teeth plate 29 has dental impressions of the tips of the back teeth of the original dental impression model 8 formed thereon.

[0043] Furthermore, the tray 26 has an engagement portion 30 into which the dental mold plate 27 is removably fitted, and this engagement portion 30 is configured to have a front teeth recess 31 into which the front teeth plate 28 is removably fitted, and a pair of back teeth recesses 32 into which the back teeth plate 29 is removably fitted.

[0044] As shown in Figs. 23 and 24, the original dental model 8 can be aligned.

[0045] Furthermore, as shown in FIG. 25, the orthodontic wire forming tool 13 is provided with a spacer 33 which is placed inside the original dental model 8 when taking a dental impression of the original dental model 8, and which is placed between the base 23 and the tray 26 when creating the set-up dental model 11.

[0046] The spacer 33 has a notch 34 formed therein, and the tray 26 has a protrusion 35 formed therein to fit into the notch 34 .

[0047] Further, a spacer 33 is also adapted to be fitted into the fitting recess 24 of the base 23 .

[0048] This allows the base 23, the tray 26 and the spacer 33 to be aligned.

[0049] When taking a dental impression of an original dental model 8 using the orthodontic wire forming tool 13 configured in this manner, first, as shown in Figure 26, the front teeth plate 28, the back teeth plate 29, and the spacer 33 are set on the tray 26, and putty silicone 37 is applied to the peripheral portion of the tray 26.

[0050] Next, as shown in FIG. 27, the original dental impression model 8 is pressed against the putty silicone 37, and as shown in FIG. 28, the dental impression of the original dental impression model 8 is imprinted on the putty silicone 37.

[0051] Next, as shown in FIG. 29, the peripheral edge of the putty silicone 37 is left and the portion with the teeth impression is removed.

[0052] Next, as shown in FIG. 30, a silicone impression material 38 is piled up inside the putty silicone 37.

[0053] Next, as shown in FIG. 31, the original dental model 8 is pressed against the silicone impression material 38, and as shown in FIG. 32, the dental impression of the original dental model 8 is imprinted on the silicone impression material 38.

[0054] Next, the model teeth 9 obtained by dividing the original dental impression model 8 shown in FIG. 6 is fitted into the dental impression of the silicon impression material 38 as shown in FIG.

[0055] Next, as shown in FIG. 25, wax 39 is poured to press the base 23 and the tray 26 together, and the wax 39 is cooled until it hardens.

[0056] Next, the tray 26, the putty silicone 37, and the silicone impression material 38 are removed to prepare a set-up dental model 11 as shown in FIG.

[0057] According to the above configuration, the patient's dental impression is collected as 3D data using the 3D scanner 2, and this 3D data is then modified to achieve the target tooth alignment after orthodontic treatment to create original dental model data 6. An original dental model 8 is then produced using a 3D printer 7 based on this original dental model data 6. This makes it possible to easily produce the set-up dental model 11 without the need for skilled labor.

[0058] In addition, the arrangement of each model tooth 9 in the set-up dental model 11 can be fine-tuned, that is, fine adjustments can be made to the locations where the wire material 5 and the model tooth 9 are separated or come into contact with each other, so that it is possible to correct small imbalances in the teeth that would not be noticed when creating a digital set-up dental model 11 using a 3D scanner 2 or 3D printer 7.

[0059] Furthermore, since the orthodontic wire forming tool 13 having the above-mentioned configuration is used, the orthodontic wire 12 can be formed accurately.

[0060] The disclosure regarding the present invention described above can be summarized at least as follows.

[0061] In other words, the orthodontic wire forming method of the present invention is characterized by comprising a dental impression taking step of taking a patient's dental impression as 3D data using a 3D scanner, a data correction step of correcting the 3D data to achieve the target tooth alignment after orthodontic treatment to create corrected dental model data, an original dental model creation step of creating an original dental model using a 3D printer based on the corrected dental model data, a set-up dental model creation step of individually dividing the multiple model teeth of the original dental model and creating a set-up dental model in which each model tooth is arranged in an artificial gum, and a wire forming step of forming an orthodontic wire by bending a wire material based on the set-up dental model.

[0062] In addition, the orthodontic wire forming tool of the present invention comprises a stand for supporting a wire material inside the set-up dental model, and a support base for supporting the stand in a slidable manner, and the support base has a pair of guide grooves along the front-to-back direction inside the set-up dental model, and the stand comprises a front stand member erected at the front part of the support base, and a pair of side stand members erected at the sides of the support base, and the front stand member has a front standing portion whose lower part is fixed to the support base, and a front extension portion that extends forward from the upper part of the front standing portion and on which the wire material is placed, and the side stand member has a side standing portion whose lower part is guided slidably in the guide grooves of the support base, and a side extension portion that extends outward from the upper part of the side standing portion and on which the wire material is placed.

[0063] Furthermore, the orthodontic wire forming tool according to the present invention is characterized in that it comprises a tray for taking a dental impression of an original dental model, and a dental impression plate on which an impression of the original dental model is formed and which is removably attached to the tray for positioning the original dental model.

[0064] Furthermore, the dental model production method of the present invention is characterized by comprising a dental impression taking step of taking a dental impression of a patient as 3D data using a 3D scanner, a data correction step of correcting the 3D data to achieve the target tooth alignment after orthodontic treatment to create corrected data, and an original dental model production step of producing an original dental model using a 3D printer based on the corrected data.

[0065] The present invention can include at least the following embodiments, which can be adopted separately or in combination with each other.

[0066] (1) The method for producing an orthodontic wire preferably includes a fine adjustment step for finely adjusting the arrangement of each model tooth of the set-up dental impression model after the wire forming step.

[0067] (2) The orthodontic wire forming tool has a base for fixing the artificial gums of the set-up dental model and for supporting a support base inside the set-up dental model, and it is preferable that this base has a fitting recess for fitting the support base and a storage portion for storing adhesive for adhering the support base.

[0068] (3) In the orthodontic wire forming tool, the tray preferably has a fitting portion into which the dental impression plate is detachably fitted. [Explanation of symbols]

[0069] P patient 2. 3D Scanner 5 Wire Material 6. Modified dental model data (original dental model data) 7. 3D Printer 8 Original dental model 9 Teeth model 10 Artificial gums 11 Set up dental model 12 Orthodontic Wires 13 Orthodontic wire former 14 Stand 15 Support stand 16 Guide groove 17 Front stand member 18 Side stand member 19 Front standing part 20 Front extension 21 Side upright part 22 Side extension 23 Base 24 Fitting recess 25 Storage unit 26 Tray 27 Tooth Plate 30 Fitting part

Claims

1. A dental impression taking step of taking a dental impression of a patient as 3D data using a 3D scanner; A data correction step of correcting the 3D data to obtain a target tooth alignment after orthodontic treatment, thereby producing corrected dental model data; An original dental model creation step of creating an original dental model by a 3D printer based on the corrected dental model data; A setup dental model preparation step of preparing a setup dental model in which the plurality of model teeth of the original dental model are individually divided and each model tooth is arranged on a pseudo-gingiva; a wire forming step of forming an orthodontic wire by bending a wire material based on the set-up dental model; 1. A method for forming an orthodontic wire comprising:

2. 2. The method for forming an orthodontic wire according to claim 1, further comprising a fine adjustment step of finely adjusting an arrangement of each model tooth of the set-up dental impression model after the wire forming step.

3. A stand for supporting a wire material inside the set-up dental model; A support base that slidably supports the stand; Equipped with The support base has a pair of guide grooves extending along the front-rear direction on the inner side of the set-up dental model, The stand includes a front stand member erected on a front portion of the support base, and a pair of side stand members erected on sides of the support base. Equipped with the front stand member has a front standing portion whose lower portion is fixed to the support base, and a front extending portion which extends forward from an upper portion of the front standing portion and on which the wire material is placed, The side stand member has a side standing portion whose lower portion is slidably guided in the guide groove of the support base, and a side extending portion that extends outward from an upper portion of the side standing portion and on which the wire material is placed.

1. An orthodontic wire forming tool comprising:

4. Further, a base is provided for fixing the artificial gum of the set-up dental model and supporting the support base inside the set-up dental model, The base has a fitting recess into which the support base is fitted, and a storage portion for storing an adhesive for adhering the support base.

4. An orthodontic wire former as claimed in claim 3.

5. A tray for taking impressions of the original dental model; a dental impression plate on which a dental impression of the original dental impression model is formed and which is detachably attached to the tray in order to position the original dental impression model; 1. An orthodontic wire forming tool comprising:

6. 6. The orthodontic wire forming tool according to claim 5, wherein the tray is provided with a fitting portion for removably fitting the dental impression plate.

7. A dental impression taking step of taking a dental impression of a patient as 3D data using a 3D scanner; a data correction step of correcting the 3D data to obtain a target tooth alignment after orthodontic treatment, thereby creating corrected data; An original dental model creation step of creating an original dental model by a 3D printer based on the correction data; A method for making a dental model, comprising:

Images