Customized tray using shape memory material, and manufacturing method therefor

Abstract

A customized tray using a shape memory material, and a manufacturing method therefor are disclosed. The customized tray using a shape memory material, according to one embodiment of the present application, may comprise a body part, which is manufactured using a shape memory material, has, in the upper surface thereof, an accommodating recess for accommodating a tooth part of a patient, and has, along the inner periphery of the accommodating recess, an impression material space into which an impression material for obtaining an impression of the tooth part is injected.

Description

Customized tray using shape memory material and method for manufacturing the same

[0001] The present invention relates to a customized tray using a shape memory material and a method for manufacturing the same. For example, the present invention relates to a tray used for taking impressions of complete dentures for individualized edentulous patients using a shape memory material and a 3D printing technique.

[0002] To fabricate complete dentures for edentulous patients, impression taking is first performed to accurately replicate the shape of the patient's oral cavity. In the traditional process of fabricating complete dentures, a two-step method is used in which a preliminary impression is taken, an individual tray is fabricated based on it, and then a precision impression is taken using the fabricated tray. In this regard, recent advancements in 3D scanning and printing technologies have made it possible to fabricate custom trays tailored to each patient's oral cavity shape, which enables more precise impression taking.

[0003] However, the individual trays currently primarily made of acrylic resin have several limitations. First, due to the rigid physical properties of the trays, it is difficult to take impressions of hard-to-access areas such as posterior teeth and posterior gums, which causes pain and discomfort to the patient. In particular, it is very difficult to obtain accurate impressions in areas with undercuts using rigid trays. Furthermore, errors occurring during the two-stage impression process lead to inaccuracies in the secondary tray, which directly affects the fit of the final prosthesis. These problems are particularly severe in elderly patients or those with trismus or gag reflexes.

[0004] The technology forming the background of this invention is disclosed in Korean Registered Patent Publication No. 10-1910053.

[0005] The present invention aims to solve the problems of the aforementioned conventional technology by combining 3D printing technology with shape memory material to provide a customized tray using shape memory material that enables precise impression taking in a single process, and a method for manufacturing the same.

[0006] The present invention aims to solve the problems of the aforementioned conventional technology by providing a tray that enables precise impression taking of all areas, including undercuts, while minimizing patient discomfort, by utilizing shape memory properties that soften at high temperatures for easy insertion into the oral cavity and harden at oral temperature.

[0007] However, the technical problems that the embodiments of the present invention aim to solve are not limited to the technical problems described above, and other technical problems may exist.

[0008] As a technical means for achieving the above-mentioned technical problem, a customized tray using a shape memory material according to one embodiment of the present invention may include a body portion manufactured using a shape memory material, having a receiving groove on its upper surface for receiving a patient's tooth portion, and an impression material space formed along the inner circumference of the receiving groove for injecting an impression material to take an impression of the tooth portion.

[0009] In addition, the body part may be softened in a preset first temperature range and hardened in a preset second temperature range.

[0010] In addition, the first temperature range may be set higher than the second temperature range.

[0011] In addition, a customized tray using a shape memory material according to one embodiment of the present invention may be designed such that the volume of the impression material space corresponds differently to each of the plurality of local parts forming the tooth area.

[0012] In addition, the volume of the impression material space may be designed to be smaller in the local area among the plurality of local areas where the pressure applied to the patient's oral tissue by the impression material acts relatively larger.

[0013] In addition, in a custom tray using a shape memory material according to one embodiment of the present invention, the volume of the impression space set for at least one of the plurality of local areas, such as the alveolar ridge crest, retromolar pad, and posterior palatal seal, may be set smaller than the volume of the impression space set for at least one of the plurality of local areas, such as the buccal vestibule, lingual vestibule, alveolar slope, palatal vault, bony prominence, and mylohyoid ridge.

[0014] In addition, the first temperature range may include a range of 60 to 70°C.

[0015] In addition, the second temperature range may be set to a range that includes the oral temperature of the patient.

[0016] In addition, the body part can be manufactured using a 3D printing method with the patient's oral scan data.

[0017] Meanwhile, a method for manufacturing a customized tray using a shape memory material according to one embodiment of the present invention may include the step of obtaining digital data by three-dimensionally scanning a patient's oral cavity and, using the digital data, the step of generating design data for manufacturing a tray comprising a body portion having a receiving groove on its upper surface for receiving a portion of the patient's teeth, and an impression material space formed along the inner circumference of the receiving groove for injecting an impression material to take an impression of the portion of the teeth.

[0018] In addition, a method for manufacturing a customized tray using a shape memory material according to one embodiment of the present invention may include the step of 3D printing the tray using the shape memory material based on the design data.

[0019] In addition, a method for manufacturing a customized tray using a shape memory material according to one embodiment of the present invention may include the steps of softening the tray manufactured according to the design data in the first temperature range, injecting an impression material into the impression material space formed in the softened tray, and mounting the tray with the injected impression material into the oral cavity of the patient and hardening it in the second temperature range.

[0020] The means for solving the problem described above are merely exemplary and should not be interpreted as intended to limit the present invention. In addition to the exemplary embodiments described above, additional embodiments may exist in the drawings and the detailed description of the invention.

[0021] According to the means for solving the problem of the present invention described above, by combining 3D printing technology and shape memory material, it is possible to provide a customized tray using a shape memory material that enables precise impression taking in a single process, and a method for manufacturing the same.

[0022] According to the solution to the problem of the present invention described above, by utilizing shape memory properties that soften at high temperatures to facilitate insertion into the oral cavity and harden at oral temperature, it is possible to provide a tray capable of taking precise impressions of all areas, including undercuts, while minimizing patient discomfort.

[0023] According to the means for solving the problem of the present invention described above, it is possible to provide a customized tray using a shape memory material and a method for manufacturing the same, which enables precise impression taking through impression material space design differentiated by region.

[0024] However, the effects obtainable from this invention are not limited to those described above, and other effects may exist.

[0025] FIG. 1 is a schematic diagram of a customized tray manufacturing system according to one embodiment of the present invention.

[0026] FIG. 2 is a conceptual diagram showing the process of manufacturing a customized tray using a shape memory material according to one embodiment of the present invention.

[0027] FIG. 3 is a flowchart of the operation of a method for manufacturing a customized tray using a shape memory material according to one embodiment of the present invention.

[0028] Embodiments of the present invention are described below with reference to the attached drawings to enable those skilled in the art to easily implement the invention. However, the present invention may be embodied in various different forms and is not limited to the embodiments described herein. Furthermore, in order to clearly explain the present invention in the drawings, parts unrelated to the explanation have been omitted, and similar parts throughout the specification are denoted by similar reference numerals.

[0029] Throughout this specification, when a part is described as being "connected" to another part, this includes not only cases where they are "directly connected," but also cases where they are "electrically connected" or "indirectly connected" with other elements interposed between them.

[0030] Throughout the entire specification, when a component is described as being located "on," "on top," "on top," "under," "on bottom," or "on bottom" of another component, this includes not only cases where the component is in contact with the other component but also cases where another component exists between the two components.

[0031] Throughout this specification, when a part is described as "comprising" a certain component, this means that, unless specifically stated otherwise, it does not exclude other components but may include additional components.

[0032] The present invention relates to a customized tray using a shape memory material and a method for manufacturing the same. For example, the present invention relates to a tray used for taking impressions of complete dentures for individualized edentulous patients using a shape memory material and a 3D printing technique.

[0033] FIG. 1 is a schematic diagram of a customized tray manufacturing system according to one embodiment of the present invention.

[0034] Referring to FIG. 1, a custom tray manufacturing system (10) according to one embodiment of the present invention may include an oral scanner (100), a 3D printing device (200), a user terminal (300), and a database (400).

[0035] The oral scanner (100), 3D printing equipment (200), user terminal (300), and database (400) can communicate with each other through a network (20). The network (20) refers to a connection structure that enables information exchange between each node, such as terminals and servers. Examples of such a network (20) include, but are not limited to, a 3GPP (3rd Generation Partnership Project) network, an LTE (Long Term Evolution) network, a 5G network, a WIMAX (World Interoperability for Microwave Access) network, the Internet, a LAN (Local Area Network), a Wireless LAN (Wireless Local Area Network), a WAN (Wide Area Network), a PAN (Personal Area Network), a Wi-Fi network, a Bluetooth network, a satellite broadcasting network, an analog broadcasting network, and a DMB (Digital Multimedia Broadcasting) network.

[0036] The user terminal (300) can be any type of wireless communication device, such as a smartphone, smartpad, tablet PC, PCS (Personal Communication System), GSM (Global System for Mobile communication), PDC (Personal Digital Cellular), PHS (Personal Handyphone System), PDA (Personal Digital Assistant), IMT (International Mobile Telecommunication)-2000, CDMA (Code Division Multiple Access)-2000, W-CDMA (W-Code Division Multiple Access), Wibro (Wireless Broadband Internet) terminal.

[0037] Meanwhile, in the description of the embodiment of the present invention, the oral scanner (100) may be a device that scans the inside of a patient's oral cavity in three dimensions and converts it into digital data. For example, the oral scanner (100) may acquire the shape of oral tissues including the patient's tooth area (2) in real time using an optical three-dimensional scanning method, and the acquired three-dimensional scan data may be converted into digital data in the form of a point cloud or a mesh and output. In addition, the oral scanner (100) may transmit the acquired scan data to a user terminal (300) or a database (400) via a network (20).

[0038] In addition, in the description of the embodiments of the present invention, the 3D printing equipment (200) may be a device that manufactures a customized tray (1) in an additive manner using a shape memory material. The 3D printing equipment (200) can manufacture a customized tray (1) optimized for the oral structure of each individual patient by stacking the shape memory material layer by layer according to design data generated based on digital data obtained from the oral scanner (100). In particular, the 3D printing equipment (200) can precisely manufacture the body part so that a differentiated impression material space is formed for each area.

[0039] In addition, in the description of the embodiment of the present invention, the database (400) may be a device or server that stores and manages various data required for the production of the custom tray (1). For example, the database (400) may store the patient's oral scan data obtained from the oral scanner (100), three-dimensional design data of the custom tray (1), physical property data of the shape memory material, design standard data for the impression material space by area, patient information data, etc.

[0040] Hereinafter, with reference to FIG. 2, the manufacturing process, shape, and function of a custom tray (1) (hereinafter referred to as the "custom tray (1)") using the shape memory material disclosed herein will be described in detail.

[0041] FIG. 2 is a conceptual diagram showing the process of manufacturing a customized tray using a shape memory material according to one embodiment of the present invention.

[0042] Referring to FIG. 2, the custom tray (1) is made using a shape memory material and may include a body portion having a receiving groove on its upper surface for receiving a patient's tooth portion (2) and an impression material space formed along the inner circumference of the receiving groove for injecting an impression material to take an impression of the tooth portion (2).

[0043] For reference, in the description of the embodiments of the present invention, the 'shape memory material' may be a material having the characteristic of changing shape in a specific temperature range, and may be a material (substance) having the characteristic of softening and having flexibility in a first temperature range (e.g., a temperature range of 60-70°C, etc.) and hardening while restoring to its original shape in a second temperature range (e.g., an oral temperature around 36°C, etc.).

[0044] Shape memory polymers (SMP), shape memory alloys (SMA), or composites thereof may be used as such shape memory materials, and in particular, for oral application, a shape memory material that is biocompatible, has appropriate mechanical strength and elasticity, and is 3D printable may be selected.

[0045] For example, biocompatible shape-memory polymers such as polycaprolactone (PCL), polyurethane (PU), and polylactic acid (PLA) can be used, while shape-memory alloys such as nickel-titanium alloy (Ni-Ti alloy) and copper-aluminum-nickel alloy (Cu-Al-Ni alloy) can be used. In addition, these materials may be fabricated into composite materials by adding nanoparticles or fibers to improve their properties.

[0046] In particular, the shape memory material used to manufacture the custom tray (1) disclosed in this invention may be a material that has been verified for biocompatibility when used in the oral cavity, and may be selected as a material (substance) that causes little irritation to the oral mucosa, does not cause chemical reactions with the impression material, and is sterilizable.

[0047] In addition, in the description of the embodiments of the present invention, the 'impression agent' is a material used to precisely replicate the shape of a patient's oral tissue, and may be a substance that initially has fluidity and then hardens after a certain period of time to maintain the shape of the oral tissue.

[0048] For example, impression materials such as alginate, silicone impression materials (addition or condensation type), polyether, and polysulfide may be used. In particular, a material that exhibits excellent bonding strength with a tray made of shape-memory material and enables precise impression taking may be selected as the impression material.

[0049] In particular, the impression material used for the custom tray (1) disclosed herein must have the characteristic of being able to harden stably without being affected by temperature changes of the custom tray (1) made of shape memory material, and in particular, it may be desirable to select a material having the characteristic that the physical properties of the impression material do not change while the custom tray (1) is hardening at oral temperature and that an accurate impression can be taken.

[0050] Additionally, referring to FIG. 2, the body of the custom tray (1) can be manufactured in such a way that it is softened in a preset first temperature range and hardened in a preset second temperature range, and the first temperature range in which the shape memory material forming the body is softened can be set higher than the second temperature range.

[0051] For example, referring to FIG. 2, the first temperature range is set to include a range of 60 to 70°C, and the second temperature range can be set to include the oral temperature of the patient so that the hardening of the body part can be achieved while the patient wears a custom tray (1) on the tooth area (2). For example, the second temperature range can be set to include a range of 36°C.

[0052] Additionally, referring to FIG. 2, the softening process for the body portion may be carried out by placing the custom tray (1) in a container filled with water heated to 60-70°C. At this time, an aqueous solvent such as distilled water or physiological saline solution may be used as the solvent for softening, and a surfactant or disinfectant may be added as needed. In particular, in order to keep the custom tray (1) stable within the container during the softening process, the container may have an internal structure corresponding to the shape of the custom tray (1). In contrast, the hardening process for the body portion may be carried out with the patient wearing the custom tray (1) on the tooth portion (2).

[0053] Meanwhile, according to one embodiment of the present invention, the body portion of the custom tray (1) can be manufactured using a 3D printing method utilizing the patient's oral scan data. For example, when manufacturing the custom tray (1), design data for manufacturing the body portion can be generated by utilizing oral scan data (digital data) of the patient's tooth portion (2) obtained through an oral scanner (100), wherein a receiving groove for receiving the tooth portion (2) is provided, and an impression material space for injecting an impression material to take an impression of the tooth portion (2) is formed along the inner circumference of the receiving groove. The custom tray (1) can be manufactured using a 3D printing device (200) based on the generated design data. In particular, since the custom tray (1) disclosed herein can be manufactured in an individualized form with adjustable thickness using oral scan data, it has the advantage of enabling a more precise impression to be taken through selective pressure on the area requiring a precise impression.

[0054] In addition, the custom tray (1) disclosed herein can selectively apply the space into which the impression material is introduced using three-dimensional image-based oral scan data of the patient's tooth area (2), thereby relatively reducing the space in the area where the pressure is applied significantly.

[0055] In other words, the body of the custom tray (1) can be custom-made so that the volume is smaller in the part where pressure from the tooth area (2) acts more strongly, and accordingly, the volume of the impression material space formed in the body of the custom tray (1) can be designed differently in correspondence with each of the multiple local parts forming the tooth area (2).

[0056] Specifically, the volume of the impression material space provided along the inner circumference of the receiving groove formed in the body portion can be designed to be smaller in the local area among the multiple local areas where the pressure applied to the patient's oral tissue by the impression material acts relatively larger.

[0057] For example, the volume of the impression space set for at least one of the alveolar ridge crest, retromolar pad, and posterior palatal seal among the plurality of local areas forming the patient's tooth area (2) may be set smaller than the volume of the impression space set for at least one of the buccal vestibule, lingual vestibule, alveolar slope, palatal vault, bony prominence, and mylohyoid ridge among the plurality of local areas forming the tooth area (2).

[0058] In this regard, among the multiple local regions forming the tooth region (2), the alveolar ridge crest is the uppermost part of the alveolar bone remaining after the tooth is removed, and may be a region that directly supports the vertical load of the denture. Therefore, the volume of the impression material space for this region is set to be relatively small so that stronger pressure can be applied when taking the impression, thereby ensuring the support of the denture along with precise shape reproduction.

[0059] In addition, among the multiple local areas forming the tooth area (2), the retromolar pad is an elevated area behind the posterior tooth area and may be an important area that determines the posterior stability of the mandibular denture. By setting the volume of the impression material space for this area to be small, the retention and stability of the denture can be improved through precise impression taking.

[0060] In addition, among the multiple local areas forming the tooth area (2), the posterior palatal seal is the posterior boundary of the maxillary denture and may be an important area that determines the suction and retention forces of the denture. By setting the volume of the impression material space for this area to be small, it may be possible to obtain a precise impression that can obtain an appropriate sealing effect.

[0061] In addition, among the multiple local areas forming the tooth area (2), the buccal vestibule is the area where the gum on the cheek meets the cheek, and it may be an area involved in forming the margin of the denture. This area has a lot of movement and is rich in soft tissue, so the volume of the impression material space can be set relatively large to record the natural dynamic state of the tissue.

[0062] In addition, among the multiple local areas forming the tooth area (2), the lingual vestibule is the area where the lingual gum meets the tongue, and it may be an important area for forming the margin of the mandibular denture. Since this area is also a region where active muscle activity occurs, the volume of the impression material space can be set large to sufficiently reflect tissue changes during functional movement.

[0063] In addition, among the multiple local areas forming the tooth area (2), the alveolar slope is a sloping area extending from the top of the alveolar ridge to the vestibule, and may be an area where tissue damage is a concern when excessive pressure is applied. Therefore, the impression material space in this area can be set relatively large so that appropriate pressure distribution can be achieved.

[0064] In addition, among the multiple local regions forming the tooth region (2), the central palatal region (palatal vault) is the central part of the roof of the mouth and may be a region that contributes to the stability of the maxillary denture. Since this region has a thin mucous membrane and hard bone tissue, it is sensitive to pressure, so the impression material space can be set large to prevent excessive pressure from being applied.

[0065] Additionally, among the multiple local areas forming the tooth area (2), the bony prominence is a part that protrudes from the surface of the alveolar bone and may be a part that causes pain when the denture is fitted. The impression material space in this part can be set sufficiently large to prevent pain caused by excessive pressure.

[0066] In addition, among the multiple local areas forming the tooth area (2), the mylohyoid ridge is a raised area on the lingual side of the mandible and may be an area that affects the stability of the mandibular denture. Since there is muscle attachment and movement in this area, the impression material space can be set large to accommodate movement during function.

[0067] Thus, the custom tray (1) disclosed in this invention allows for the fabrication of a denture optimized for each patient's oral condition by differentially designing the impression material space considering the anatomical characteristics of each part and the role in supporting the denture. In particular, precise impression taking is achieved in important support areas, and appropriate pressure distribution is achieved in soft tissue areas, thereby ensuring both the functionality and stability of the denture.

[0068] However, it is not limited to this, and the volume of the impression material space formed in the receiving groove of the body part can be designed in various ways depending on the patient's oral condition (e.g., degree of alveolar bone resorption, density of the mucosa, oral moisture, etc.), the characteristics of the impression material used (e.g., viscosity, flowability, setting time, etc.), the type of denture (e.g., immediate denture, complete denture, temporary denture, etc.), and the patient's specific characteristics (e.g., gag reflex, difficulty opening the mouth, degree of salivary secretion, etc.).

[0069] For example, depending on the patient's oral condition, the impression material space can be set relatively wide in areas with severe alveolar bone resorption to minimize mucosal deformation, an appropriate level of space can be set in areas with dense mucosa to ensure proper pressure is applied, and in cases of dry mouth, sufficient space can be set to ensure the flowability of the impression material.

[0070] In addition, depending on the characteristics of the impression agent used, when using a high-viscosity impression agent, the impression agent space can be set wide to ensure sufficient fluidity; when using a low-viscosity impression agent, it can be set narrowly to prevent excessive flow of the impression agent; and when using an impression agent with a long curing time, an appropriate space can be set to ensure sufficient working time.

[0071] Depending on the type of denture, for immediate dentures, the impression space can be set wide to account for tissue changes immediately after extraction, for complete dentures, the main support area can be set relatively narrow to ensure the stability of the denture, and for temporary dentures, an appropriate intermediate space can be set considering the state of tissue healing.

[0072] Regarding the specific characteristics of the patient, in the case of a patient with a severe gag reflex, sufficient space for the impression material in the posterior palate can be secured to enable a rapid procedure; in the case of a patient with limited mouth opening, the space for the impression material in the posterior posterior teeth can be appropriately adjusted to allow for easy insertion and removal; and in the case of a patient with excessive salivary secretion, a relatively narrow space can be established to prevent dilution of the impression material.

[0073] In this way, the custom tray (1) can be designed to have an optimized impression space according to the specific oral condition of each patient, the characteristics of the material used, the type of denture, and the clinical condition of the patient.

[0074] In summary, the custom tray (1) disclosed in this invention combines the advantages of 3D printing technology and shape memory material, allowing for a customized design optimized for each patient's oral structure, easy insertion in a flexible state when fitted into the oral cavity, and natural hardening at oral temperature, enabling precise impression taking.

[0075] In addition, the custom tray (1) is designed so that appropriate pressure is applied to each area through a differential impression material space design for each area, thereby improving the retention and stability of the denture and minimizing patient discomfort. In particular, by shortening the existing two-step impression taking process to one step, the procedure time is shortened and the possibility of errors is drastically reduced, and there is an advantage that it can be effectively applied to elderly patients, patients with limited mouth opening, or patients with gag reflexes.

[0076] Below, based on the details described above, we will briefly examine the operation flow of the present invention.

[0077] FIG. 3 is a flowchart of the operation of a method for manufacturing a customized tray using a shape memory material according to one embodiment of the present invention.

[0078] The method for manufacturing a customized tray using a shape memory material illustrated in FIG. 3 can be performed by the customized tray manufacturing system (10) described above. Therefore, even if the content described below is omitted, the description of the customized tray manufacturing system (10) can be equally applied to the description of the method for manufacturing a customized tray using a shape memory material.

[0079] Referring to FIG. 3, in step S11, the oral scanner (100) can three-dimensionally scan the patient's oral cavity to obtain digital data (oral scan data) corresponding to the patient's tooth area (2).

[0080] Next, in step S12, the 3D printing equipment (200) can receive design data generated to produce a custom tray (1) that is created using digital data and includes a body part having a receiving groove on the upper surface for receiving a patient's tooth area (2) and an impression material space formed along the inner circumference of the receiving groove for injecting an impression material to take an impression of the tooth area.

[0081] Next, in step S13, the 3D printing equipment (200) can produce a customized tray (1) using a shape memory material based on input design data in a 3D printing manner.

[0082] Next, in step S14, the custom tray (1) can be softened in a preset first temperature range.

[0083] For example, in step S14, the custom tray (1) can be softened in a first temperature range set to include a range of 60 to 70°C.

[0084] Next, impression material can be injected into the impression material space formed in the softened custom tray (1) in step S15.

[0085] Next, in step S16, the custom tray (1) can be fitted into the patient's oral cavity (in other words, attached to the tooth area (2)) with the impression material injected and hardened in a preset second temperature range.

[0086] For example, in step S16, the custom tray (1) can be cured in a second temperature range set to include the patient's oral temperature.

[0087] In the description above, steps S11 through S16 may be further divided into additional steps or combined into fewer steps according to an embodiment of the present invention. Additionally, some steps may be omitted as necessary, and the order of the steps may be changed.

[0088] A method for manufacturing a customized tray using a shape memory material according to one embodiment of the present invention may be implemented in the form of program instructions that can be executed through various computer means and recorded on a computer-readable medium. The computer-readable medium may include program instructions, data files, data structures, etc., either individually or in combination. The program instructions recorded on the medium may be those specifically designed and configured for the present invention, or they may be those known and available to those skilled in the art of computer software. Examples of computer-readable recording media include magnetic media such as hard disks, floppy disks, and magnetic tapes; optical recording media such as CD-ROMs and DVDs; magneto-optical media such as floptical disks; and hardware devices specifically configured to store and execute program instructions, such as ROM, RAM, and flash memory. Examples of program instructions include machine code, such as that generated by a compiler, as well as high-level language code that can be executed by a computer using an interpreter, etc. The above-described hardware device may be configured to operate as one or more software modules to perform the operation of the present invention, and vice versa.

[0089] In addition, the method for manufacturing a customized tray using the aforementioned shape memory material can also be implemented in the form of a computer program or application executed by a computer stored on a recording medium.

[0090] The foregoing description of the present invention is for illustrative purposes only, and those skilled in the art will understand that other specific forms can be easily modified without altering the technical concept or essential features of the present invention. Therefore, the embodiments described above should be understood as illustrative in all respects and not restrictive. For example, each component described as a single unit may be implemented in a distributed manner, and components described as distributed may likewise be implemented in a combined form.

[0091] The scope of the present invention is defined by the claims set forth below rather than by the detailed description above, and all modifications or variations derived from the meaning and scope of the claims and the concept of equivalents thereof should be interpreted as being included within the scope of the present invention.

Claims

1. In a customized tray using a shape memory material, A body portion manufactured using a shape-memory material, having a receiving groove on its upper surface for receiving a patient's tooth portion, and an impression material space formed along the inner circumference of the receiving groove for injecting an impression material to take an impression of the tooth portion, Includes, A tray characterized in that the body portion softens in a preset first temperature range and hardens in a preset second temperature range, wherein the first temperature range is set higher than the second temperature range.

2. In Paragraph 1, A tray characterized in that the volume of the impression material space is designed differently in correspondence with each of the plurality of local parts forming the tooth area.

3. In Paragraph 2, The volume of the above impression material space is, A tray characterized by being designed to be smaller in the local area among the plurality of local areas where the pressure applied to the patient's oral tissue by the impression agent acts relatively larger.

4. In Paragraph 2, The volume of the impression space set for at least one of the alveolar ridge crest, retromolar pad, and posterior palatal seal among the plurality of local regions, is, A tray characterized by being set smaller than the volume of the impression material space set for at least one of the plurality of local areas, including the buccal vestibule, lingual vestibule, alveolar slope, palatal vault, bony prominence, and mylohyoid ridge.

5. In Paragraph 1, The first temperature range above includes a range of 60 to 70℃, and A tray in which the above second temperature range is set to a range including the oral temperature of the patient.

6. In Paragraph 1, A tray characterized in that the body portion is manufactured using a 3D printing method utilizing the oral scan data of the patient.

7. A method for manufacturing a customized tray using a shape memory material, A step of acquiring digital data by 3D scanning the patient's oral cavity; and A step of generating design data for manufacturing a tray comprising a body portion having a receiving groove on the upper surface for receiving a patient's tooth portion, and an impression material space formed along the inner circumference of the receiving groove for injecting an impression material to take an impression of the tooth portion, using the above digital data; Includes, A method of manufacturing, wherein the above-mentioned body part is softened in a preset first temperature range and hardened in a preset second temperature range, wherein the first temperature range is set higher than the second temperature range.

8. In Paragraph 7, A step of 3D printing the tray using a shape memory material based on the above design data, A manufacturing method that further includes 9. In Paragraph 7, A step of softening the tray manufactured according to the above design data in the above first temperature range; The step of injecting an impression material into the impression material space formed in the softened tray; and A step of mounting the tray injected with the impression agent into the patient's oral cavity and curing it within the second temperature range. A manufacturing method that further includes 10. In Paragraph 7, The first temperature range above includes a range of 60 to 70℃, and A method of production in which the above second temperature range is set to a range including the oral temperature of the patient.

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