Method for manufacturing a personalized resin retainer for the oral cavity

Abstract

This invention claims protection for a method of manufacturing a personalized resin clip for the teeth. The key technical points include: Step 1, acid etching the area where the resin clip will be fixed to the teeth, followed by rinsing off the etching solution and drying the area; Step 2, applying a resin adhesive to the area where the resin clip will be fixed to the teeth, and curing it with a light-curing lamp to form a base; Step 3, applying a layer of flowing resin to the base, and placing a molding device on the flowing resin; Step 4, stacking the flowing resin on the molding device according to the desired shape; Step 5, curing the flowing resin with a light-curing lamp, removing the molding device, and obtaining the personalized resin clip for the teeth. The personalized resin clip produced by this invention has rounded edges, its shape can be adjusted according to needs, it is less likely to scratch areas of the mouth, it is more comfortable to use than existing lingual clips, and it is more convenient to fix the position on uneven tooth surfaces, with better adhesion and less tendency to fall off; at the same time, its shape is variable and its appearance is aesthetically pleasing.

Description

Technical Field

[0001] This invention relates to the field of methods for manufacturing dental medical devices, and more specifically, to a method for manufacturing a personalized resin buckle for the oral cavity. Background Technology

[0002] Tilted teeth can not only affect chewing but also lead to facial deformities, resulting in an unattractive appearance and necessitating orthodontic treatment. During treatment, lingual clips are bonded to the tooth surface to act as traction points, and traction elastics are hung on them for auxiliary force to adjust the bite. Lingual clips, due to their grooves or pores, have a natural advantage in attaching traction elastics and in pulling ectopic / impacted teeth.

[0003] However, the current tongue-side fastener has the following problems:

[0004] 1. Most existing tongue-side buckles are finished metal tongue-side buckles with sharp edges. The length and width of the tongue-side buckle are fixed, which makes it very easy to scratch the oral mucosa, tongue and other parts, causing great discomfort to the wearer.

[0005] 2. Existing prefabricated metal lingual clips are not easy to fix on uneven tooth surfaces, and their bonding performance with the tooth surface will be reduced, leading to detachment and affecting the orthodontic treatment. Summary of the Invention

[0006] To address the shortcomings of existing technologies, a method for manufacturing personalized resin clips for the oral cavity is provided. This method overcomes the disadvantages of existing lingual clips, such as discomfort during use, inconvenience in fixation, and poor adhesive performance.

[0007] To achieve the above objectives, the following technical solution is provided:

[0008] A method for manufacturing a personalized resin clip for oral cavity, comprising the following steps:

[0009] (1) Acid etching is performed on the area where the dental resin buckle is fixed. After acid etching, the acid etching liquid is rinsed off and the area is dried.

[0010] (2) Apply resin adhesive to the area where the dental resin clip is fixed, and cure it with a light curing lamp to form a base;

[0011] (3) Coat a layer of flowing resin on the substrate and place the molding device on the flowing resin.

[0012] (4) Flowing resin is deposited on the molding device;

[0013] (5) Use a light curing lamp to cure the flowing resin, remove the molding device, and you will get a personalized oral resin clip.

[0014] The present invention is further configured such that the molding device is made of an elastic material.

[0015] The present invention is further configured such that the forming device is a toothed ring or an elastic cord.

[0016] The present invention is further configured such that the light curing lamp is a halogen lamp or an LED light curing lamp.

[0017] The present invention is further configured such that after the flowing resin is stacked in step (4), a portion of the molding device is exposed to the flowing resin.

[0018] The present invention is further configured such that the resin binder comprises silane-treated ceramic or silane-treated silicon dioxide.

[0019] The present invention is further configured such that the flowing resin comprises silane-treated ceramic or silane-treated silicon dioxide.

[0020] The present invention is further configured such that step (2) also includes applying a filling agent along the tooth near the base and on the base and drying it.

[0021] The present invention is further configured such that the filler comprises 45%-50% water and 50-55% polyacrylic acid.

[0022] The present invention is further configured to include, after the filler has dried, applying a 0.1 mol / L ferrous lactate solution to the filler application site, and then drying it after being exposed to a light curing lamp for a period of time.

[0023] In summary, the above technical solution has the following beneficial effects:

[0024] 1. Because the present invention uses flowing resin molding, the personalized oral cavity resin buckle produced has rounded edges and its shape can be adjusted according to needs. It is less likely to scratch the oral cavity and is more comfortable to use than existing tongue buckles.

[0025] 2. This invention, through acid etching and substrate setting, addresses uneven tooth surfaces by forming a substrate using resin adhesive after acid etching. This facilitates fixation, improves adhesion, and prevents detachment.

[0026] 3. This invention attaches the filler to the base near the tooth and to the edge of the base where the flowing resin is attached. By enhancing the adhesion between the base and the tooth and the adhesion between the flowing resin and the base, the toughness and strength of the personalized resin buckle made by this invention are improved, reducing the possibility of the personalized resin buckle made by this invention falling off or breaking.

[0027] 4. During tooth surface etching, the surface enamel is removed due to acid etching, which may create tiny gaps between the resin adhesive and the tooth surface. Bacteria may grow in these gaps, leading to an increase in oral bacteria and even tooth decay in the affected area. The filling agent fills the joint and has an antibacterial effect, reducing the growth of bacteria at the personalized resin bonding site in the oral cavity. Attached Figure Description

[0028] Figure 1 This is a schematic diagram illustrating the manufacturing steps of the present invention using a toothed ring as a forming device.

[0029] Figure 2 This is a schematic diagram illustrating the manufacturing steps of the molding device using elastic thread in this invention.

[0030] Figure 3 This is a schematic diagram of the tooth ring after it has been removed in Embodiment 7 of the present invention.

[0031] Figure 4 This is a schematic diagram of attaching a traction rubber band in Embodiment 7 of the present invention.

[0032] Figure 5 This is a schematic diagram of the personalized resin clips for the oral cavity made on both sides of the mandible in Embodiment 7 of the present invention.

[0033] Figure 6 A schematic diagram of the placement of the elastic cord in Embodiment 8 of the present invention.

[0034] Figure 7 A schematic diagram of stacking flowing resin in Embodiment 8 of the present invention.

[0035] Figure 8 A schematic diagram of the placement of the correction device in Embodiment 8 of the present invention.

[0036] Reference numerals: 1. Molding device; 2. Resin buckle; 3. Traction band. Detailed Implementation

[0037] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments. Identical components are denoted by the same reference numerals. It should be noted that the terms "front," "rear," "left," "right," "upper," and "lower" used in the following description refer to directions in the accompanying drawings, and the terms "bottom surface," "top surface," "inner," and "outer" refer to directions toward or away from the geometric center of a specific component, respectively.

[0038] Reference Figure 1 As shown, a method for manufacturing a personalized resin clip for the oral cavity includes the following steps:

[0039] (1) Acid etching is performed on the area where the dental resin buckle is fixed. After acid etching, the acid etching liquid is rinsed off and the area is dried.

[0040] (2) Apply resin adhesive to the area where the dental resin clip is fixed, and cure it with a light curing lamp to form a base;

[0041] (3) Coat a layer of flowing resin on the substrate and place the molding device 1 on the flowing resin;

[0042] (4) Flowing resin is deposited on molding device 1;

[0043] (5) Cur the flowing resin with a light curing lamp, remove the molding device 1, and you will get a personalized oral resin buckle.

[0044] This invention, through the setting of flowing resin, produces personalized oral cavity resin clips with rounded edges and adjustable shapes, making them less likely to scratch oral cavity areas and more comfortable to use than existing tongue clips.

[0045] Simultaneously, through acid etching and substrate setup, the substrate is formed using resin adhesive after acid etching. This is not affected by the fixed position, making it easy to fix, with better adhesion, and less prone to falling off.

[0046] Furthermore, the personalized resin buckle for oral cavity produced by this invention has an aesthetically pleasing appearance and a variable shape, allowing for the design of vertical grooves, making it easier to attach traction elastic bands and preventing them from falling off.

[0047] Furthermore, such as Figure 3 As shown, the shape of the flowing resin stack can be mushroom-shaped. By setting the width of the cross-section of the end away from the base to be greater than the width of the cross-section of the flowing resin stack, the traction elastic band 3 is less likely to slip off the personalized resin buckle on the oral cavity as it moves.

[0048] Furthermore, the molding device 1 is made of an elastic material. By making the molding device 1 of an elastic material, it is easier to remove the molding device 1.

[0049] Furthermore, the forming device 1 can be a split ring or an elastic cord. When the forming device 1 is a split ring, the manufacturing steps are as follows: Figure 1 As shown; when the molding device 1 is an elastic cord, the manufacturing steps are as follows: Figure 2 As shown.

[0050] Furthermore, the light curing lamp can be a halogen lamp or an LED light curing lamp. The wavelength of the light from the light curing lamp is selected based on the resin binder and flow resin formulation used in the curing process, and blue light or ultraviolet light can be used for curing.

[0051] In addition, after the flowing resin is stacked in step (4), part of the molding device exposes the flowing resin.

[0052] In this invention, a flowing resin is deposited on the molding device 1. After the flowing resin has cured, the molding device 1 needs to be removed. If the flowing resin portion of the molding device 1 is not exposed, it will be difficult to remove the molding device 1. Therefore, partially exposing the molding device 1 facilitates its removal. Specifically, the exposed portion can be achieved by trimming the flowing resin before curing, so that the molding device 1 is partially exposed.

[0053] Furthermore, such as Figure 4 , Figure 5 As shown, orthodontic treatment is performed using traction elastic bands 3 after the resin buckle 2 is formed.

[0054] In addition, resin binders include silane-treated ceramics or silane-treated silica.

[0055] In addition, the flowing resin includes silane-treated ceramics or silane-treated silica.

[0056] The flowable resin and resin binder are existing technologies and will not be described in detail here. In this invention, the resin binder and flowable resin components selected include silane-treated ceramics or silane-treated silica, or both.

[0057] In addition, step (2) also includes applying a filler along the base near the tooth and at the location where the flowing resin is applied on the base.

[0058] In addition, the filler includes 45%-51% water and 50%-55% polyacrylic acid.

[0059] When making resin clip 2, the following two points need to be considered regarding the resin adhesive and the flow of resin:

[0060] 1. The bonding and adhesion ability of inorganic fillers such as ceramics and silica to the tooth surface;

[0061] 2. During the photocuring process, the degree of curing of the photocuring resin in the resin binder and the flowing resin varies at different locations inside and outside.

[0062] Therefore, if the inorganic filler does not bond well with the tooth surface, or if the resin in the underlying layer does not cure sufficiently, the mechanical strength of the personalized oral resin produced by this invention will be insufficient.

[0063] Therefore, this invention, through the design of the filler, utilizes polyacrylic acid, which can react with the resin binder and the ceramic in the flowing resin through an acid-base reaction, and form hydrogen bonds with the silanol groups on the surface of silica. This improves the bonding strength between the resin binder and the tooth surface, substrate, and flowing resin, thereby enhancing the strength of the personalized dental resin. The presence of carboxyl groups in polyacrylic acid allows it to form strong ionic bonds with calcium ions in the tooth and can also replace phosphate groups in hydroxyapatite, the main component of teeth, resulting in excellent compatibility and bonding ability between the resin binder, flowing resin, and tooth surface. Furthermore, the filler can enhance the mechanical strength of the resin, compensating for the decrease in mechanical strength caused by insufficient curing.

[0064] Furthermore, the tiny gaps created at the junctions between the tooth surface and the resin adhesive, and between the resin adhesive and the flowable resin, can lead to bacterial growth. Polyacrylic acid solution has good flow properties, which can enter and fill these tiny gaps, preventing bacteria from growing in them. In addition, its molecules have both polar and non-polar parts, making it highly compatible with the resin adhesive, polyacrylic acid, and flowable resin.

[0065] In addition, after the filler dries, a 0.1 mol / L ferrous lactate solution is dropped onto the filler application site, and then dried after being exposed to light for a period of time.

[0066] Polyacrylic acid (PAA) is hygroscopic, and when used as a filler, it easily absorbs water and swells in the moist environment of the oral cavity, reducing its bonding effectiveness. PAA can crosslink under the influence of iron ions, forming a three-dimensional network structure that enhances stability and reduces swelling. However, directly using crosslinked PAA can affect its bonding with ceramics and silica, while directly using solutions containing iron ions can lead to uneven crosslinking at different locations due to uneven mixing of PAA and iron ions, thus affecting performance.

[0067] Therefore, ferrous lactate is added during the acrylic acid polymerization process, followed by light irradiation. Ferrous ions cannot cause crosslinking of polyacrylic acid, but light irradiation promotes the oxidation of ferrous ions in ferrous lactate to ferric ions, allowing the ferrous ions and polyacrylic acid to mix better before crosslinking. This results in better adhesion to the coated area, reducing the likelihood of water absorption, swelling, and peeling, which would cause the filler to fail.

[0068] Furthermore, the polyacrylic acid used has a degree of polymerization greater than 20,000 and is solid at room temperature. Polyacrylic acid with a low degree of polymerization is liquid and is easily dissolved in water, making it unsuitable for use as a filler.

[0069] It should be noted that the mechanical properties of conventional dental repair materials and resins mostly only require attention to their compressive strength. However, the resin buckle 2 produced by this invention needs to consider the bonding strength between the tooth and the substrate, and between the substrate and the flowing resin, rather than compressive strength. Therefore, the bonding strength is enhanced by applying a filler.

[0070] The following are embodiments of the present invention and performance tests of the embodiments, wherein the resin binder is a veneer filler from 3M Company, the flow resin is a flow resin from 3M Company, and the acid etching reagent is a 37% phosphoric acid aqueous solution. Since it is difficult to obtain human teeth of similar size and properties from the same location and it is inconvenient to perform mechanical testing, bovine teeth with similar composition and structure were used for testing.

[0071] Examples 1-5 used selected bovine incisors of similar size. After removing soft tissue and cleaning, the teeth were soaked in physiological saline and then cut into 10mm*10mm*2mm slices for testing. The substrate was made using a perforated mold with a height of 2mm and a diameter of 2mm, and the flowing resin was made using a perforated mold with the same diameter and a height of 3mm. The testing method followed GB / T1040.1-2018, using a universal testing machine for tensile testing. The molding device 1 in these examples can be a toothed ring, elastic cord, or other molding device with a certain degree of elasticity.

[0072] Example 1

[0073] A method for manufacturing a personalized resin clip for oral cavity, comprising the following steps:

[0074] (1) Acid etching is performed on the area where the dental fixing resin buckle is located on the slice. After acid etching, the acid etching liquid is rinsed clean and the area is dried.

[0075] (2) Apply resin adhesive to the acid-etched area and cure it with a light curing lamp to form a substrate;

[0076] (3) Coat a layer of flowing resin on the substrate and place the molding device 1 on the flowing resin;

[0077] (4) Flowing resin is deposited on molding device 1;

[0078] (5) Cur the flowing resin with a light curing lamp, remove the molding device 1, and you will get a personalized oral resin buckle.

[0079] Example 2

[0080] A method for manufacturing a personalized resin clip for oral cavity, comprising the following steps:

[0081] (1) Acid etching is performed on the area where the dental fixing resin buckle is located on the slice. After acid etching, the acid etching liquid is rinsed clean and the area is dried.

[0082] (2) Apply resin adhesive to the acid-etched area, cure it with a light curing lamp to form a base, then apply a filler along the base near the teeth and at the location where the flowing resin is applied on the base and dry it. The filler consists of 50% water and 50% polyacrylic acid.

[0083] (3) Coat a layer of flowing resin on the substrate and place the molding device 1 on the flowing resin;

[0084] (4) Flowing resin is deposited on molding device 1;

[0085] (5) Cur the flowing resin with a light curing lamp, remove the molding device 1, and you will get a personalized oral resin buckle.

[0086] Example 3

[0087] A method for manufacturing a personalized resin clip for oral cavity, comprising the following steps:

[0088] (1) Acid etching is performed on the area where the dental fixing resin buckle is located on the slice. After acid etching, the acid etching liquid is rinsed clean and the area is dried.

[0089] (2) Apply resin adhesive to the acid-etched area, cure it with a light curing lamp to form a base, then apply a filler along the base near the teeth and at the location where the flowing resin is applied on the base and dry it. The filler consists of 47% water and 53% polyacrylic acid.

[0090] (3) Coat a layer of flowing resin on the substrate and place the molding device 1 on the flowing resin;

[0091] (4) Flowing resin is deposited on molding device 1;

[0092] (5) Cur the flowing resin with a light curing lamp, remove the molding device 1, and you will get a personalized oral resin buckle.

[0093] Example 4

[0094] A method for manufacturing a personalized resin clip for oral cavity, comprising the following steps:

[0095] (1) Acid etching is performed on the area where the dental fixing resin buckle is located on the slice. After acid etching, the acid etching liquid is rinsed clean and the area is dried.

[0096] (2) Apply resin adhesive to the acid-etched area, cure it with a light curing lamp to form a base, then apply a filler along the base near the teeth and along the area where the flowing resin is applied on the base and dry it. The filler consists of 45% water and 55% polyacrylic acid.

[0097] (3) Coat a layer of flowing resin on the substrate and place the molding device 1 on the flowing resin;

[0098] (4) Flowing resin is deposited on molding device 1;

[0099] (5) Cur the flowing resin with a light curing lamp, remove the molding device 1, and you will get a personalized oral resin buckle.

[0100] Example 5

[0101] A method for manufacturing a personalized resin clip for oral cavity, comprising the following steps:

[0102] (1) Acid etching is performed on the area where the dental fixing resin buckle is located on the slice. After acid etching, the acid etching liquid is rinsed clean and the area is dried.

[0103] (2) Apply resin adhesive to the acid-etched area and cure it with a light curing lamp to form a base. Then apply a filler along the base near the teeth and at the position where the flowing resin is applied on the base and dry it. The filler consists of 45% water and 55% polyacrylic acid. After the filler dries, add 0.1 mol / L ferrous lactate solution, cure it with a light curing lamp for 10 min and dry it.

[0104] (3) Coat a layer of flowing resin on the substrate and place the molding device 1 on the flowing resin;

[0105] (4) Flowing resin is deposited on molding device 1;

[0106] (5) Cur the flowing resin with a light curing lamp, remove the molding device 1, and you will get a personalized oral resin buckle.

[0107] Example 6

[0108] Three slices of bovine tooth, each measuring 10mm × 10mm × 2mm, were taken and weighed. The center of each slice was then acid-etched. After rinsing off the acid, the area was dried. A 2mm diameter, 5mm high filler was applied to the surface using a mold. The filler consisted of 50% water and 50% polyacrylic acid, and the slices were labeled a, b, and c. A 0.1mol / L ferrous lactate solution was applied to the filler area of ​​sample a, and the sample was dried after a period of light exposure. A 0.1mol / L ferric chloride solution was applied to the filler area of ​​sample c. Sample b was left untreated. Samples a, b, and c were dried and weighed. Artificial saliva was then prepared. Samples a, b, and c were placed in containers of the same size containing artificial saliva, ensuring the saliva completely submerged the samples. After soaking for 24 hours, the samples were removed, the surface liquid was blotted dry with filter paper, and their mass was measured. The expansion rate was calculated.

[0109] Expansion rate = (Mass after soaking - Mass after drying) / (Mass after drying - Mass of cow teeth)

[0110] Example 7

[0111] To create a personalized resin clip for a patient requiring orthodontics, the following steps are included:

[0112] (1) Acid etching is performed on the area where the resin clip is fixed to the patient's teeth. After acid etching, the acid etching liquid is rinsed off and the area is dried.

[0113] (2) Apply resin adhesive to the area where the dental resin clip is fixed, and cure it with a light curing lamp to form a base;

[0114] (3) Apply a layer of flowable resin to the substrate and place the splitting ring on the flowable resin;

[0115] (4) Flowing resin is deposited on the splitting ring;

[0116] (5) Cur the flowing resin with a light-curing lamp, remove the dividing ring, and you will get the personalized resin clips for the oral cavity. Take pictures of the formed personalized resin clips for the oral cavity, ask the patient if there is any discomfort caused by the resin clips, and follow up during the orthodontic treatment to see if the personalized resin clips fall off.

[0117] Example 8

[0118] To create a personalized resin clip for a patient requiring orthodontics, the following steps are included:

[0119] (1) Acid etching is performed on the area where the resin clip is fixed to the patient's teeth. After acid etching, the acid etching liquid is rinsed off and the area is dried.

[0120] (2) Apply resin adhesive to the area where the dental resin clip is fixed, and cure it with a light curing lamp to form a base;

[0121] (3) Coat a layer of flowing resin on the substrate and place elastic lines on the flowing resin;

[0122] (4) Stacking and flowing resin on the elastic line;

[0123] (5) Use a light-curing lamp to cure the flowing resin, remove the elastic thread, and you will get the personalized resin clip for the oral cavity. Take photos of the formed personalized resin clip for the oral cavity, ask the patient if there is any discomfort caused by the resin clip, and follow up during the orthodontic period to see if the personalized resin clip falls off.

[0124] The test results are as follows:

[0125] Tensile tests were performed on Examples 1-4 using a universal testing machine, and the data obtained are shown in the table below:

[0126] Example 1 35.21 Example 2 40.51 Example 3 42.27 Example 4 44.89 Example 5 46.21

[0127] Examples 1-4 show that with the increase of polyacrylic acid content, the adhesive performance of personalized dental resin buckles is better, and the tensile strength increases after ferrous lactate treatment. The results indicate that the personalized dental resin buckles prepared by the present invention have better adhesive performance and are less prone to falling off.

[0128] The expansion test results are as follows:

[0129]

[0130]

[0131] The expansion test results show that sample a, treated with ferrous lactate, has the smallest expansion rate. Sample c, treated with ferric chloride, has a smaller expansion rate, but it is still greater than that of the sample treated with ferrous lactate. This indicates that the filler treated with ferrous lactate is less likely to absorb water and swell, thus reducing its detachment and failure.

[0132] The images in Examples 7 and 8 are shown in the attached figures. The patients did not experience any discomfort with the resin clips, and the resin clips did not fall off during the orthodontic treatment.

[0133] The above description is merely a preferred embodiment of the present invention. The scope of protection of the present invention is not limited to the above embodiments. All technical solutions falling within the scope of the present invention's concept are within the scope of protection of the present invention. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principles of the present invention should also be considered within the scope of protection of the present invention.

Claims

1. A method for manufacturing a personalized resin clip for oral cavity, characterized in that, Includes the following steps: (1) Acid etching is performed on the area where the dental resin clip is fixed. After acid etching, the acid etching liquid is rinsed off and the area is dried. (2) Apply resin adhesive to the area where the dental resin clip is fixed, and cure it with a light curing lamp to form a base; (3) Coat a layer of flowing resin on the substrate and place the molding device on the flowing resin; (4) Flowing resin is deposited on the molding device; (5) Cur the flowing resin with a light curing lamp, remove the molding device, and you will get a personalized oral resin buckle. The shape of the flowing resin stack can be mushroom-shaped. After the flowing resin is stacked in step (4), part of the molding device exposes the flowing resin. Step (4) also includes applying and drying the filling agent around the tooth near the base and on the base; The resin binder includes silane-treated ceramics or silane-treated silica; The flowing resin includes silane-treated ceramics or silane-treated silica; The filler comprises 45%-50% water and 50-55% polyacrylic acid; This also includes applying a 0.1 mol / L ferrous lactate solution to the filler application site after the filler has dried, followed by exposure to light for a period of time and then drying.

2. The method for manufacturing a personalized resin clip for oral cavity according to claim 1, characterized in that, The forming device is made of an elastic material.

3. The method for manufacturing a personalized resin clip for oral cavity according to claim 2, characterized in that, The forming device is a toothed ring or an elastic cord.

4. The method for manufacturing a personalized resin clip for oral cavity according to claim 1, characterized in that, The light curing lamp is a halogen lamp or an LED light curing lamp.

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