A Manufacturing method of transparent orthodontics device

Abstract

The method for producing a transparent whitening tray according to the present invention comprises the steps of: 3D printing a whitening tray using the transparent whitening tray forming composition as a raw material. Step (S10), removing uncured resin and liquid from the whitening tray obtained in step (S10). (S20), a step (S30) of post-curing the whitening tray obtained from the above step (S20), A step (S40) of post-heat treating the whitening tray obtained from the above step (S40) and The method includes the step of washing the substrate.

Description

[Technical field]

[0001] A method for producing a transparent whitening tray and a transparent whitening tray produced by the method are disclosed. More specifically, a transparent whitening tray with excellent transparency and oral compatibility can be manufactured. A method for producing a transparent whitening tray and a transparent whitening tray produced by the method are disclosed. can be. [Background technology]

[0002] Dental bleaching uses active oxygen to break down the stains on the surface of discolored teeth. This is a teeth whitening treatment that breaks down and separates active oxygen into the enamel and dentin on the inside of the teeth. This refers to a treatment that penetrates and bleaches colored substances to white. This type of teeth whitening can be divided into office bleaching and home bleaching. and consumer whitening (lifestyle whitening). Professional whitening refers to whitening treatment carried out at a dental hospital using professional drugs and light. Professional whitening such as , is highly effective in a short treatment time, but it uses high concentrations of drugs. Therefore, there is a high risk of side effects on teeth and gums, and there is a problem of inducing tooth sensitivity. do. Home whitening is a combination of whitening agents provided by dentists and custom-made products. This refers to the progressive whitening of teeth using dental trays. The conventional method for making whitening trays for self-whitening is as follows: i) Take a mold of the patient's teeth using alginate impression material and create an impression. obtaining a pressure body; ii) injecting a plaster model material into the obtained physiognomy to prepare a dental model; iii) The dental model is then fitted with a personal whitening tray to ensure there is enough space for the whitening agent to be charged. applying a block-out resin; and iv) Using a vacuum forming machine, heat and press a plastic sheet onto the above tooth model to form a single piece. This includes the step of producing a human whitening tray (mouth guard). However, conventional individual whitening trays manufactured in this way are subject to heat and other factors that can cause damage when worn repeatedly. The difference in humidity outside the mouth can cause deformation (shrinkage and expansion or twisting), resulting in a poor fit within the mouth. Therefore, conventional techniques can lead to excessive leakage of whitening agents and strong pressure on teeth and gums. can be given. On the other hand, consumer whitening (lifestyle whitening) is when individuals purchase a general whitening treatment kit and proceed with whitening on their own. This refers to teeth whitening. Detailed Description of the Invention

[0003] [Technical issues] In one embodiment of the present invention, a transparent whitening tray having excellent transparency and mouth fit is manufactured. To provide a method for producing a transparent whitening tray. Another embodiment of the present invention is a transparent whitening tray manufactured by the above-mentioned method. Provide the following: [Technical solution] Hereinafter, a method for manufacturing a transparent whitening tray according to one embodiment of the present invention will be described in detail. As used herein, a "composition for forming a transparent whitening tray" refers to a composition that includes a photocurable compound, a photoinitiator, and a liquid. It means a substance in the form of a solution, suspension or paste, containing water but not containing pigments. For example, the composition for forming a transparent whitening tray is disclosed in Korean Patent Application No. 10-2020-0107965. It is possible that the composition is the same as the transparent orthodontic device forming composition used in Korean Patent Application No. 10-20 No. 20-0107965 is incorporated herein in its entirety. In addition, in this specification, "partial curing" means that the curing rate is 40% to 90%. Taste. In this specification, "complete curing" means that the curing rate is 99% to 100%. This means that According to one embodiment of the present invention, a method for producing a transparent whitening tray comprises the steps of: and a step (S10) of 3D printing a whitening tray using the above as a raw material. Step (S20) of removing uncured resin and liquid (e.g., water) from the obtained whitening tray; Step (S30) of post-curing the whitening tray obtained from step (S20); The method includes a step of post-heat treating the white tray (S40) and the above-mentioned cleaning step. The step (S20) is carried out by spraying compressed air of 5 to 12 bar onto the whitening tray. If the pressure of the compressed air is within the above range, the transparency of the whitening tray can be improved. It can be improved. For example, step S20 can be performed using an air gun. The step (S30) can be performed at a temperature of 60 to 90° C. The post-curing temperature of the step (S30) is Within this range, the transparency of the whitening tray can be improved. The above step (S40) is carried out by lowering the temperature at 25℃ / min or less starting from 60~90℃. Yes, it is possible. For example, the step (S40) can be carried out up to a final temperature of 15 to 50°C. If the post-heat treatment conditions in (S40) are within the above range, the transparency of the whitening tray can be improved. can. The step (S50) may include a cleaning solution cleaning step (S50-1) and a water cleaning step (S50-2). For example, the cleaning solution step (S50-1) may be alcohol, isopropyl alcohol, ethanol, etc. tripropylene glycol monomethyl ether (TPM) or a combination of these. This can be done using a cleaning solution containing Between the cleaning solution cleaning step (S50-1) and the water cleaning step (S50-2), the cleaning solution is completely dried. The time interval between the washing steps may be 5 minutes or more. If the washing time difference between the water washing step (S50-2) is within the above range, The transparency can be improved. The method for manufacturing the transparent whitening tray according to one embodiment of the present invention having the above-mentioned configuration includes: It is a photocurable compound with durability and a certain degree of softness, and is applied to patients using 3D printing technology. By printing transparent whitening trays according to the shape of your mouth, it is possible to achieve a perfect fit in your mouth. Provides transparent whitening trays that are highly resistant to deformation due to heat and humidity and can be worn repeatedly It is possible. Another aspect of the present invention provides a transparent whitening tray manufactured by the method for manufacturing a transparent whitening tray. Provide. The manufactured transparent whitening tray has higher transparency and oral conformity than existing transparent whitening trays. all have excellent advantages. Production Example 1: Production of a composition for forming a transparent whitening tray As a photocurable compound, diurethane dimethacrylate represented by the above chemical formula 1 (Cas No. 72869 -86-4, a mixture of a substance where R=H and a substance where R=CH3, molecular formula: C23H38N2O8) (PP1), Bisphenol A ethoxylate dimethacrylate (Cas No. 41637-38-1) represented by formula 2 PP2), hydroxyethyl methacrylate (Cas Noas) represented by the above formula 3, acrylic Poly(Cas No. 9), chemical formula 3-PP7-P77-P7, Diana BR-83 (Mitsubishi Rayon) as acrylic resin Glass transition temperature 105°C, weight average molecular weight 40,000), phenyl as photopolymerization initiator Bis(2,4,6-trimethylbenzoyl)phosphine oxide (Cas No. 162881-26-7), and Transparent whitening tray formulation containing 2,6-di-tert-butyl-paracresol as an antioxidant The materials and contents used in each of the Examples and Comparative Examples are shown in Table 1 below. In Table 1 below, the units of each value are parts by weight. The content of the antioxidant is based on 100 parts by weight of the total weight of the above five photopolymerizable compounds. . [Chemical formula 1] R'CH2[C(CH3)(R)CH2]2CH2R'(R=H or CH3, R'=NHCO2CH2CH2O2CC(CH3)=CH2) [Chemical formula 2] JPEG2025514641000002.jpg51157[Chemical formula 3] CH2=C(CH3)COOCH2CH2OH [Chemical formula 4] JPEG2025514641000003.jpg52157 [Chemical formula 5] CH2=C(CH3)COO(CH2CH2O)3COC(CH3)=CH2 [Table 1] Example 1: Manufacturing of transparent whitening trays First, a 3D printing data was created based on the 3D scan data of a specific patient's (i.e., patient A) teeth. The transparent whitening tray forming composition produced in the above Production Example 1 is used as a raw material. The first whitening tray was printed using a 3D printer. The first whitening tray was partially cured. After that, compressed air at 8 bar was sprayed onto the first whitening tray using an air gun to remove any uncured The resin and liquid were removed to obtain a second whitening tray. The second whitening tray was then heated to 75°C. The third whitening tray was then cured to obtain a third whitening tray. The fourth whitening tray was then heated at a rate of 25°C / min to 25°C to obtain a fourth whitening tray. The tray was thoroughly washed with isopropyl alcohol to obtain the fifth whitening tray. After 5 minutes, The fifth whitening tray was thoroughly washed with water to obtain a sixth whitening tray. Example 2: Manufacturing of transparent whitening trays First, a 3D printing data was created based on the 3D scan data of a specific patient's (i.e., patient A) teeth. The transparent whitening tray forming composition produced in the above Production Example 1 is used as a raw material. The first whitening tray was printed using a 3D printer. The first whitening tray was partially cured. After that, compressed air at 5 bar was sprayed onto the first whitening tray using an air gun to remove any uncured The resin and liquid were removed to obtain a second whitening tray. The second whitening tray was then heated to 75°C. The third whitening tray was then cured to obtain a third whitening tray. The fourth whitening tray was then heated at a rate of 25°C / min to 25°C to obtain a fourth whitening tray. The tray was thoroughly washed with isopropyl alcohol to obtain the fifth whitening tray. After 5 minutes, The fifth whitening tray was thoroughly washed with water to obtain a sixth whitening tray. Example 3: Manufacturing of transparent whitening trays First, a 3D printing data was created based on the 3D scan data of a specific patient's (i.e., patient A) teeth. The transparent whitening tray forming composition produced in the above Production Example 1 is used as a raw material. The first whitening tray was printed using a 3D printer. The first whitening tray was partially cured. After that, compressed air of 12 bar was sprayed onto the first whitening tray using an air gun to remove the unhardened The resin and the liquid were removed to obtain a second whitening tray. The second whitening tray was then heated to 75° C. After curing, the third whitening tray was obtained. The third whitening tray was then heated at a temperature of 75°C. Then, the tray was heated at a high temperature of 25°C / min to 25°C to obtain the fourth whitening tray. The white tray was thoroughly washed with isopropyl alcohol to obtain the fifth whitening tray. The fifth whitening tray was then thoroughly washed with water to obtain a sixth whitening tray. Example 4: Fabrication of transparent whitening trays First, a 3D printing data was created based on the 3D scan data of a specific patient's (i.e., patient A) teeth. The transparent whitening tray forming composition produced in the above Production Example 1 is used as a raw material. The first whitening tray was printed using a 3D printer. The first whitening tray was partially cured. After that, compressed air at 8 bar was sprayed onto the first whitening tray using an air gun to remove any uncured The resin and liquid were removed to obtain a second whitening tray. The second whitening tray was then heated to 60° C. The third whitening tray was then cured to obtain a third whitening tray. The fourth whitening tray was then heated at a rate of 25°C / min to 25°C to obtain a fourth whitening tray. The tray was thoroughly washed with isopropyl alcohol to obtain the fifth whitening tray. After 5 minutes, The fifth whitening tray was thoroughly washed with water to obtain a sixth whitening tray. Example 5: Manufacturing of transparent whitening trays First, a 3D printing data was created based on the 3D scan data of a specific patient's (i.e., patient A) teeth. The transparent whitening tray forming composition produced in the above Production Example 1 is used as a raw material. The first whitening tray was printed using a 3D printer. The first whitening tray was partially cured. After that, compressed air at 8 bar was sprayed onto the first whitening tray using an air gun to remove any uncured The resin and liquid were removed to obtain a second whitening tray. The second whitening tray was then heated to 90° C. The third whitening tray was then cured to obtain a third whitening tray. The fourth whitening tray was then heated at a rate of 25°C / min to 25°C to obtain a fourth whitening tray. The tray was thoroughly washed with isopropyl alcohol to obtain the fifth whitening tray. After 5 minutes, The fifth whitening tray was thoroughly washed with water to obtain a sixth whitening tray. Example 6: Manufacturing of transparent whitening trays First, a 3D printing data was created based on the 3D scan data of a specific patient's (i.e., patient A) teeth. The transparent whitening tray forming composition produced in the above Production Example 1 is used as a raw material. The first whitening tray was printed using a 3D printer. The first whitening tray was partially cured. After that, compressed air at 8 bar was sprayed onto the first whitening tray using an air gun to remove any uncured The resin and liquid were removed to obtain a second whitening tray. The second whitening tray was then heated to 75°C. The third whitening tray was then cured to obtain a third whitening tray. The fourth whitening tray was then heated at a rate of 5°C / min or less to 25°C to obtain a fourth whitening tray. The white tray was thoroughly washed with isopropyl alcohol to obtain the fifth whitening tray. The fifth whitening tray was then thoroughly washed with water to obtain a sixth whitening tray. Example 7: Manufacturing of transparent whitening trays First, a 3D printing data was created based on the 3D scan data of a specific patient's (i.e., patient A) teeth. The transparent whitening tray forming composition produced in the above Production Example 1 is used as a raw material. The first whitening tray was printed using a 3D printer. The first whitening tray was partially cured. After that, compressed air at 8 bar was sprayed onto the first whitening tray using an air gun to remove any uncured The resin and liquid were removed to obtain a second whitening tray. The second whitening tray was then heated to 75°C. The third whitening tray was then cured to obtain a third whitening tray. The fourth whitening tray was then heated at a rate of 25°C / min up to 50°C to obtain a fourth whitening tray. The tray was thoroughly washed with isopropyl alcohol to obtain the fifth whitening tray. After 5 minutes, The fifth whitening tray was thoroughly washed with water to obtain a sixth whitening tray. Example 8: Manufacturing of transparent whitening trays First, a 3D printing data was created based on the 3D scan data of a specific patient's (i.e., patient A) teeth. The transparent whitening tray forming composition produced in the above Production Example 1 is used as a raw material. The first whitening tray was printed using a 3D printer. The first whitening tray was partially cured. After that, compressed air at 8 bar was sprayed onto the first whitening tray using an air gun to remove any uncured The resin and liquid were removed to obtain a second whitening tray. The second whitening tray was then heated to 75°C. The third whitening tray was then cured to obtain a third whitening tray. The fourth whitening tray was then heated at a rate of 25°C / min to 25°C to obtain a fourth whitening tray. The tray was thoroughly washed with isopropyl alcohol to obtain the fifth whitening tray. After 20 minutes, The fifth whitening tray was thoroughly washed with water to obtain a sixth whitening tray. Comparative Example 1: Manufacturing of transparent whitening trays First, a 3D printing data was created based on the 3D scan data of a specific patient's (i.e., patient A) teeth. The transparent whitening tray forming composition produced in the above Production Example 1 is used as a raw material. The first whitening tray was printed using a 3D printer. The first whitening tray was partially cured. After that, the first whitening tray was thoroughly washed with isopropyl alcohol and the second The second whitening tray was then post-cured at 75°C to obtain a third whitening tray. After that, the third whitening tray was heated at a rate of 25°C / min starting from 75°C until it reached 25°C. Then, the fourth whitening tray was obtained by post-heat treatment. Comparative Example 2: Manufacturing of transparent whitening trays First, a 3D printing data was created based on the 3D scan data of a specific patient's (i.e., patient A) teeth. The transparent whitening tray forming composition produced in the above Production Example 1 is used as a raw material. The first whitening tray was printed using a 3D printer. The first whitening tray was partially cured. After that, 3 bar of compressed air was sprayed onto the first whitening tray using an air gun to remove any uncured The resin and liquid were removed to obtain a second whitening tray. The second whitening tray was then heated to 75°C. The third whitening tray was then cured to obtain a third whitening tray. The fourth whitening tray was then heated at a rate of 25°C / min to 25°C to obtain a fourth whitening tray. The tray was thoroughly washed with isopropyl alcohol to obtain the fifth whitening tray. After 5 minutes, The fifth whitening tray was thoroughly washed with water to obtain a sixth whitening tray. Comparative Example 3: Manufacturing of transparent whitening trays First, a 3D printing data was created based on the 3D scan data of a specific patient's (i.e., patient A) teeth. The transparent whitening tray forming composition produced in the above Production Example 1 is used as a raw material. The first whitening tray was printed using a 3D printer. The first whitening tray was partially cured. After that, compressed air of 14 bar was sprayed onto the first whitening tray using an air gun to remove the unhardened The resin and the liquid were removed to obtain a second whitening tray. The second whitening tray was then heated to 75° C. After curing, the third whitening tray was obtained. The third whitening tray was then heated at a temperature of 75°C. Then, the tray was heated at a high temperature of 25°C / min to 25°C to obtain the fourth whitening tray. The white tray was thoroughly washed with isopropyl alcohol to obtain the fifth whitening tray. The fifth whitening tray was then thoroughly washed with water to obtain a sixth whitening tray. Comparative Example 4: Manufacturing of transparent whitening trays First, a 3D printing data was created based on the 3D scan data of a specific patient's (i.e., patient A) teeth. The transparent whitening tray forming composition produced in the above Production Example 1 is used as a raw material. The first whitening tray was printed using a 3D printer. The first whitening tray was partially cured. After that, compressed air at 8 bar was sprayed onto the first whitening tray using an air gun to remove any uncured The resin and liquid were removed to obtain a second whitening tray. The second whitening tray was then cooled to 30° C. The third whitening tray was then cured to obtain a third whitening tray. The fourth whitening tray was then heated at a rate of 25°C / min to 25°C to obtain a fourth whitening tray. The tray was thoroughly washed with isopropyl alcohol to obtain the fifth whitening tray. After 5 minutes, The fifth whitening tray was thoroughly washed with water to obtain a sixth whitening tray. Comparative Example 5: Manufacturing of transparent whitening trays First, a 3D printing data was created based on the 3D scan data of a specific patient's (i.e., patient A) teeth. The transparent whitening tray forming composition produced in the above Production Example 1 is used as a raw material. The first whitening tray was printed using a 3D printer. The first whitening tray was partially cured. After that, compressed air at 8 bar was sprayed onto the first whitening tray using an air gun to remove any uncured The resin and liquid were removed to obtain a second whitening tray. The second whitening tray was then heated to 120°C. The third whitening tray was then cured to obtain a third whitening tray. The fourth whitening tray was then heated at a rate of 25°C / min to 25°C to obtain a fourth whitening tray. The tray was thoroughly washed with isopropyl alcohol to obtain the fifth whitening tray. After 5 minutes, The fifth whitening tray was thoroughly washed with water to obtain a sixth whitening tray. Comparative Example 6: Manufacturing of transparent whitening trays First, a 3D printing data was created based on the 3D scan data of a specific patient's (i.e., patient A) teeth. The transparent whitening tray forming composition produced in the above Production Example 1 is used as a raw material. The first whitening tray was printed using a 3D printer. The first whitening tray was partially cured. After that, compressed air at 8 bar was sprayed onto the first whitening tray using an air gun to remove any uncured The resin and liquid were removed to obtain a second whitening tray. The second whitening tray was then heated to 75°C. The third whitening tray was then cured to obtain a third whitening tray. The fourth whitening tray was then heated at a rate of 30°C / min until it reached 25°C. The tray was thoroughly washed with isopropyl alcohol to obtain the fifth whitening tray. After 5 minutes, The fifth whitening tray was thoroughly washed with water to obtain a sixth whitening tray. Comparative Example 7: Manufacturing of transparent whitening trays First, a 3D printing data was created based on the 3D scan data of a specific patient's (i.e., patient A) teeth. The transparent whitening tray forming composition produced in the above Production Example 1 is used as a raw material. The first whitening tray was printed using a 3D printer. The first whitening tray was partially cured. After that, compressed air at 8 bar was sprayed onto the first whitening tray using an air gun to remove any uncured The resin and liquid were removed to obtain a second whitening tray. The second whitening tray was then heated to 75°C. After curing, the third whitening tray was obtained. Thereafter, the third whitening tray was subjected to the post-curing without post-heat treatment. Immediately after, the tray was thoroughly washed with isopropyl alcohol to obtain the fourth whitening tray. The fourth whitening tray was thoroughly washed with water to obtain a fifth whitening tray. Comparative Example 8: Manufacturing of transparent whitening trays First, a 3D printing data was created based on the 3D scan data of a specific patient's (i.e., patient A) teeth. The transparent whitening tray forming composition produced in the above Production Example 1 is used as a raw material. The first whitening tray was printed using a 3D printer. The first whitening tray was partially cured. After that, compressed air at 8 bar was sprayed onto the first whitening tray using an air gun to remove any uncured The resin and liquid were removed to obtain a second whitening tray. The second whitening tray was then heated to 75°C. The third whitening tray was then cured to obtain a third whitening tray. The fourth whitening tray was then heated at a rate of 25°C / min to 25°C to obtain a fourth whitening tray. The tray was thoroughly washed with isopropyl alcohol to obtain the fifth whitening tray. Without any gap, the fifth whitening tray was immediately washed thoroughly with water to obtain a sixth whitening tray. Reference Example 1: Manufacturing of transparent whitening trays First, a 3D printing data was created based on the 3D scan data of a specific patient's (i.e., patient A) teeth. The transparent whitening tray forming composition produced in the above Production Example 1 is used as a raw material. The first whitening tray was printed using a 3D printer. The first whitening tray was partially cured. After that, compressed air at 8 bar was sprayed onto the first whitening tray using an air gun to remove any uncured The resin and liquid were removed to obtain a second whitening tray. The second whitening tray was then heated to 75°C. The third whitening tray was then cured to obtain a third whitening tray. The fourth whitening tray was then heated at a rate of 25°C / min to 25°C to obtain a fourth whitening tray. The tray was thoroughly washed with isopropyl alcohol to obtain the fifth whitening tray. After 1 minute, The fifth whitening tray was thoroughly washed with water to obtain a sixth whitening tray. Evaluation example 1: Transparency evaluation of transparent whitening trays A sensory test was carried out on the transparent whitening trays manufactured in the above Examples and Comparative Examples. Specifically, sensory tests were conducted by five trained evaluators using the following method. That is, the transparency level of each transparent whitening tray was evaluated by visual observation using a 5-point scale, The scores were averaged and shown in Table 2 below. Here, the higher the score for each item, the greater the transparency of the item. It means high. Photographs of the whitening trays produced in Example 1, Comparative Example 1, Comparative Example 2, and Comparative Example 6 are shown in FIG. These are shown in Figure 4. Evaluation example 2: Oral cavity fit evaluation of transparent whitening tray A sensory test was carried out on the transparent whitening trays manufactured in the above Examples and Comparative Examples. Specifically, sensory tests were conducted by five trained evaluators using the following method. That is, each transparent whitening tray was placed on a dental model (i.e., plaster) of a specific patient (i.e., Patient A). The level of oral conformity was evaluated by visual observation using a 5-point scale, and the scores were averaged. The results are shown in Table 2 below. The higher the score for each item, the higher the oral compatibility for that item. Taste. [Table 2] Referring to Table 2 and Figs. 1 to 4, the transparent whitening trays of Examples 1 to 8 and Comparative Examples 1 to 8 It was found that the transparency was higher than that of the transparent whitening tray of Reference Example 1. It was found that the whitening trays of Comparative Examples 1 to 8 and Reference Example 1 all had excellent oral cavity fit. . The preferred embodiment of the present invention has been described above with reference to the drawings and examples. The present invention is merely illustrative, and various modifications and variations will become apparent to those skilled in the art. It will be understood that other equivalent embodiments are possible. will have to be defined by the appended claims. [Effects of the invention] The method for manufacturing a transparent whitening tray according to one embodiment of the present invention has the following advantages: (1) It is possible to provide a transparent whitening tray that is excellent in both transparency and oral cavity fit. (2) There is no need to create a plaster model, and the manufacturing process is simpler than that of conventional transparent whitening trays. It is possible. (3) Accurate output using a 3D printer ensures excellent fit to the oral cavity. (4) It is less susceptible to deformation due to temperature and humidity, making it possible to wear it repeatedly and sustainably. (5) The softness of the material and excellent mouth fit minimizes leakage of the whitening agent when worn for long periods of time. can be done. [Brief description of the drawings]

[0004] [Figure 1] 1 is a photograph showing a transparent whitening tray produced in Example 1. [Diagram 2] 1 is a photograph showing a transparent whitening tray manufactured in Comparative Example 1. [Diagram 3] 1 is a photograph showing a transparent whitening tray manufactured in Comparative Example 2. [Figure 4] 1 is a photograph showing a transparent whitening tray manufactured in Comparative Example 6. Best Mode for Carrying Out the Invention

[0005] The method for producing a transparent whitening tray according to the present invention is best described as follows: Let us assume that. The present invention relates to A step of 3D printing a whitening tray using the composition for forming a transparent whitening tray as a raw material. Floor(S10); Step (S20) of removing uncured resin and liquid from the whitening tray obtained in step (S10); a step (S30) of post-curing the whitening tray obtained from the step (S20); a step (S40) of post-heat treating the whitening tray obtained from the step (S30); and The method further comprises a step (S50) of cleaning the whitening tray obtained from the step (S40). [Industrial Applicability] The method for producing a transparent whitening tray according to the present invention comprises the steps of: By providing a transparent whitening tray with excellent oral compatibility, it is possible to increase the convenience of wearing the tray. Therefore, In addition, there is no need to create plaster models, and the manufacturing process is simplified, improving cost-effectiveness. It has an effect.

Claims

[Claim 1] A step of 3D printing a whitening tray using the composition for forming a transparent whitening tray as a raw material. Floor(S10); Step (S20) of removing uncured resin and liquid from the whitening tray obtained in step (S10); a step (S30) of post-curing the whitening tray obtained from the step (S20); a step (S40) of post-heat treating the whitening tray obtained from the step (S30); and The method includes a step (S50) of cleaning the whitening tray obtained from the step (S40), The step (S20) is carried out by injecting compressed air of 5 to 12 bar onto the whitening tray, The above step (S30) is carried out at a temperature of 60 to 90°C. The step (S40) is carried out at a high temperature of 60 to 90°C starting temperature and 25°C / min or less. The step (S50) includes a cleaning solution cleaning step (S50-1) and a water cleaning step (S50-2), Between the cleaning solution cleaning step (S50-1) and the water cleaning step (S50-2), the cleaning solution is completely dried. A method for manufacturing a transparent whitening tray in which the time between application is a time interval of 5 minutes or more.

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