Method for manufacturing intraoral scanner tip, and intraoral scanner tip manufactured using method

Abstract

A method for manufacturing an intraoral scanner tip, and an intraoral scanner tip manufactured using the method are disclosed. The method for manufacturing an intraoral scanner tip may comprise the steps of: manufacturing an intraoral scanner tip through plastic injection; masking a part of the inner surface of the intraoral scanner tip by using a masking member; controlling that a sand blasting gun is positioned inside the intraoral scanner tip masked with the masking member; and spraying an abrasive at the inner surface of the intraoral scanner tip from a sand blasting nozzle of the sand blasting gun.

Description

Method for manufacturing an oral scanner tip and an oral scanner tip manufactured by the method

[0001] The present invention relates to a method for manufacturing an oral scanner tip and an oral scanner tip manufactured by the method.

[0002] More specifically, the present invention relates to a technology for providing a manufacturing method for forming an inner surface of an oral scanner tip into a matted surface using a sandblasting process, thereby suppressing the diffuse reflection of DLP (digital light processing) lighting on the optical path inside the oral scanner tip. Through this, the present invention can improve the scanning quality of the oral scanner by more clearly distinguishing the DLP black / white pattern of the oral scanner.

[0003] Prosthetics for dental prosthetic treatment performed in dentistry are manufactured by taking an impression of the patient's damaged teeth, creating a plaster cast, and then requesting a dental technician to create the prosthesis based on this.

[0004] However, since this conventional method of manufacturing prosthetic materials indirectly obtains treatment data from a dental plaster model for diagnosis and measurement of the patient's dental condition, it requires a lot of time and effort to manufacture the prosthetic materials.

[0005] To address the aforementioned challenges of conventional impression-taking, 3D intraoral scanners have recently become increasingly popular. These scanners are inserted into a patient's oral cavity and non-contactly scan the teeth, capturing 2D image data. Based on this data, 3D scanned models can be created. This allows 3D intraoral scanners to quickly and easily capture patient impressions. Furthermore, the creation of 3D scanned models allows for more precise impressions, leading to more satisfactory clinical outcomes during treatment and at-home care.

[0006] 3D oral scanners basically shine a light source onto a subject, collect the reflected light, and acquire a 2D image. These 2D images are then aligned to create a 3D image. To create these 3D images, 3D oral scanners can primarily utilize confocal microscopy and light triangulation techniques.

[0007] Both of these methods use a light output unit installed inside the oral scanner to project light onto the surface of the teeth, which is the subject, and have a structure in common where the projected light is reflected and formed on an image sensor. The projected light source is patterned light or structural light, and the DLP (Digital Light Processing) method is used to irradiate such light.

[0008] Looking at the general structure of the oral scanner (10) of Fig. 1, the oral scanner (10) is composed of an oral scanner tip (200) at the front and a main body (100) at the rear, a reflector (210) is arranged in front of the oral scanner tip (200), and an optical output unit (110) and a camera module (120) are arranged inside the main body (100).

[0009] Although not shown in the drawing, a control unit and a cooling fan, etc. may be placed in the main body (100), and in the case of a wired oral scanner, a cable for power and data transmission may be connected to the rear of the main body (100). In contrast, in the case of a wireless oral scanner, a battery may be installed inside the main body, and a connection terminal for charging the battery and a wireless transmitter / receiver may be placed in the rear of the main body (100).

[0010] The light output unit (110) located in the main body (100) can irradiate light composed of a predetermined wavelength range to teeth and gums in the oral cavity through a reflector. At least one such light output unit (110) can be placed in front of the main body (100), and at least one of a laser, a light emitting diode (LED), a halogen, an incandescent, an infrared, an ultraviolet, or a three-wavelength lamp can be selectively used as a light source.

[0011] The optical output unit (110) is installed at the boundary between the main body (100) and the oral scanner tip (200) in Fig. 1, but is not limited to this arrangement. In addition, the optical output unit (110) can provide patterned light having a predetermined pattern formed therein.

[0012] The camera module (120) is placed inside the front of the main body (100) and detects reflected light reflected from a subject to obtain a two-dimensional image. That is, the camera module (120) can obtain an image by sensing the reflected light reflected after the light irradiated from the light output unit (110) is irradiated to a subject in the oral cavity as a two-dimensional image. At this time, the camera module (120) may be a solid-state imaging device using a photodiode as a light-receiving element and a charge-coupled device (CCD) as a charge-transfer element, or a CMOS image sensor, which is a low-power imaging device having a complementary metal oxide semiconductor (CMOS) structure, may be used.

[0013] And, a lens, a focal variable lens, and a wavelength plate are arranged in the camera module (120), and an optical splitter can be arranged as needed.

[0014] In addition, the control unit controls the light output unit (110) and the camera module (120). For example, the control unit transmits predetermined pattern information to the light output unit (110) and performs signal processing and control operations on data detected by the camera module (120). The control unit receives pattern information of reflected light from the camera module (120) and converts it into a three-dimensional image. The converted three-dimensional image can be displayed on the display unit. In addition, the control unit can control the rotation speed of the cooling fan.

[0015] The lens section of the camera module (120) is a collection of lenses and the like that performs the function of irradiating light output from the light output section (110) to a subject and reflecting the reflected light from the subject to the camera module (120). The lens section is installed in the front of the camera module (120) or on a separate lens support and serves to collect the light reflected from the subject and transmit it to the image sensing section.

[0016] The oral scanner tip (200) is a part installed in the front of the main body (100) and inserted into the oral cavity, and can be detachably coupled to the main body (100) to facilitate maintenance of the oral scanner. The oral scanner tip (200) may be configured in a form that is extended by a predetermined length with the same diameter, or may take a form in which the diameter gradually decreases toward the tip, i.e., a tapered form, to facilitate insertion into the oral cavity.

[0017] A reflector (210) is mounted on the tip of the oral scanner tip (200). The reflector (210) is provided on the tip of the oral scanner tip (200) and functions to irradiate light generated from the light output unit (110) to a subject or to reflect light reflected from the subject to the camera module (120). The reflector (210) may be fixedly installed at an appropriate angle to the oral scanner tip (200), and may be configured to correct the angle as needed.

[0018] Conventional oral scanners with this configuration may experience diffuse reflections inside the oral scanner tip due to stray light generated when DLP-type lighting is reflected by a reflector (210). This diffuse reflection acts as an obstacle that hinders the clear formation of a DLP pattern, and as a result, it becomes difficult to clearly form a DLP black / white pattern, which causes a decrease in image resolution.

[0019] However, no technology has yet been explored to solve this problem.

[0020] The present invention can provide a technology for suppressing the diffuse reflection of DLP type lighting on the optical path inside the oral scanner tip by providing a manufacturing method for forming the inner surface of the oral scanner tip into a matte surface using a sandblasting process.

[0021] Through this, the present invention can provide a technology that can improve the scan quality of an oral scanner by making the DLP black / white pattern of the oral scanner more clearly distinguishable.

[0022] A method for manufacturing an oral scanner tip according to one embodiment of the present invention may include the steps of manufacturing an oral scanner tip through plastic injection; masking a portion of an inner surface of the oral scanner tip using a masking member; controlling a sandblasting gun to be positioned within the oral scanner tip masked by the masking member; and spraying an abrasive onto the inner surface of the oral scanner tip from a sandblasting nozzle of the sandblasting gun.

[0023] The above masking step can mask a rear 20 to 30% area of ​​the entire length of the oral scanner tip with the masking member.

[0024] The above masking step can mask the area where the reflector of the oral scanner tip is mounted and the area where the scan window is formed with the masking member.

[0025] The controlling step may move the sandblasting gun to be positioned inside the fixed oral scanner tip, and the spraying step may spray an abrasive from the sandblasting nozzle onto the inner surface of the oral scanner tip while moving the sandblasting gun in a direction opposite to the direction in which the fixed oral scanner tip is positioned.

[0026] The controlling step may move the oral scanner tip so that a fixed sandblasting gun is positioned inside, and the spraying step may spray an abrasive from the sandblasting nozzle onto the inner surface of the oral scanner tip while moving the oral scanner tip in a direction opposite to the direction in which the fixed sandblasting gun is positioned.

[0027] The above spraying step can vary the moving speed of the oral scanner tip or the sandblasting gun during the process of spraying the abrasive onto the inner surface of the oral scanner tip.

[0028] The moving speed of the oral scanner tip or the sandblasting gun can be determined based on the shape of the oral scanner tip.

[0029] The inner surface of the oral scanner tip onto which the above abrasive is sprayed can be formed with an average surface roughness value within the range of 20 to 40 μm.

[0030] A method for manufacturing an oral scanner tip according to one embodiment may include the steps of: processing a mold used for plastic injection of an oral scanner tip; post-processing a surface of the processed mold using a sandblasting process; and injecting the oral scanner tip using the mold post-processed through the sandblasting process.

[0031] In one embodiment, an oral scanner tip included in an oral scanner comprises: a reflector mounted on an inner slope of a tip; and a scan window formed on one surface of the tip to serve as a passage for a light source incident or emitted to the outside through the reflector; and the oral scanner tip can be detachably coupled to a main body including a light output unit and a camera module.

[0032] The above oral scanner tip may have its inner surface formed into a matte surface through a sandblasting process.

[0033] The above oral scanner tip can be subjected to a sandblasting process on its inner surface corresponding to 70 to 80% of the length from the tip.

[0034] According to one embodiment of the present invention, by forming the inner surface of the oral scanner tip into a matte surface using a sandblasting process, it is possible to suppress the diffuse reflection of DLP type lighting on the optical path inside the oral scanner tip.

[0035] Through this, the present invention can improve the scan quality of the oral scanner by making the DLP black / white pattern of the oral scanner more clearly distinguishable.

[0036] Figure 1 is a cross-sectional view showing the structure of a typical oral scanner.

[0037] FIG. 2 is a cross-sectional view showing the structure of an oral scanner equipped with an oral scanner tip according to one embodiment.

[0038] Figure 3 is a flowchart illustrating a method for manufacturing an oral scanner tip according to one embodiment.

[0039] FIGS. 4A and 4B are drawings illustrating a method for masking an inner portion of an oral scanner tip according to one embodiment.

[0040] FIG. 5 is a flowchart illustrating a method for manufacturing an oral scanner tip according to another embodiment.

[0041] FIG. 6 a is a photograph of a white surface taken from an oral scanner tip that has not been sandblasted according to one embodiment, and FIG. 6 b is a photograph of a white surface taken from an oral scanner tip that has been sandblasted according to one embodiment and manufactured by the manufacturing method of the present invention.

[0042] FIG. 7 is a drawing showing a photograph of a tooth taken from an oral scanner tip according to one embodiment.

[0043] FIG. 8 is a diagram showing the configuration of a computing device according to one embodiment of the present invention.

[0044] Hereinafter, various embodiments of the present invention will be described with reference to specific embodiments illustrated in the accompanying drawings. The differences between the embodiments are not mutually exclusive and should be understood comprehensively, and specific shapes, structures, and characteristics described in connection with the embodiments may be implemented in other embodiments without departing from the spirit and scope of the present invention.

[0045] As previously discussed in the technical background of the invention, FIG. 1 shows the structure of a general oral scanner (10).

[0046] An oral scanner (10) is composed of an oral scanner tip (200) at the front and a main body (100) at the rear. A reflector (210) is placed in front of the scanner tip (200), and an optical output unit (110) and a camera module (120) are placed inside the main body (100). The present invention relates to the oral scanner tip (200) among the components of such an oral scanner (10).

[0047]

[0048] FIG. 2 is a drawing specifically illustrating the structure of an oral scanner tip according to one embodiment of the present invention.

[0049] Referring to FIG. 2, the oral scanner tip (200) of the present invention is a part that is installed in the front of the main body (100) and inserted into the oral cavity, and can be detachably coupled to the main body (100) to facilitate maintenance and replacement of the oral scanner (10).

[0050] The oral scanner tip (200) of the present invention may be configured in a form that is extended by a predetermined length with the same diameter, or may be configured in a form in which the diameter gradually decreases toward the tip to facilitate insertion into the oral cavity, that is, in a tapered form. However, considering smooth scanning operation within a limited oral space and the size of the optical output unit (110) or camera module (120) mounted on the main body, it is preferable that the oral scanner tip (200) of the present invention have a tapered form.

[0051] As shown in FIG. 2, the oral scanner (10) of the present invention can be largely composed of a main body (100) and an oral scanner tip (200) that can be attached or detached to the main body (100). The main body (100) may be provided with a camera module (120) including an optical output unit (110), a lens unit (121), and an image sensing unit (122), and although not shown in the drawing, a control unit and a cooling fan. In this case, when the oral scanner (10) is a wired oral scanner, a cable for power and data transmission may be connected to the rear of the main body (100). On the other hand, when the oral scanner (10) is a wireless oral scanner, a battery may be installed inside the main body (100), and a connection terminal for charging the battery and a wireless transceiver may be disposed at the rear of the main body (100).

[0052] At the front of the main body (100), a main body cap (130) is coupled to the main body (100) to close the inner space of the main body (100), but a hole is formed in the center of the main body cap (130) to allow light to pass through to the camera module (120).

[0053] The oral scanner tip (200) is combined to surround the outer surface of the main body cap (130), and can be combined in a detachable manner with respect to the main body (100) to facilitate maintenance and replacement.

[0054] As shown in Fig. 2, the oral scanner tip (200) can be formed in a tapered shape, i.e., a shape in which the diameter gradually decreases toward the tip, to facilitate insertion into the oral cavity.

[0055] And, a reflector (210) is mounted on the inner slope of the tip of the oral scanner tip (200), and a scan window (220) that serves as a passage for irradiating light toward teeth and gums and reflecting light can be formed on the tip surface of the oral scanner tip (200) corresponding to the position where the light source incident on the reflector (210) is emitted.

[0056]

[0057] FIG. 3 is a diagram illustrating a method for manufacturing an oral scanner tip according to one embodiment of the present invention. In one embodiment, at least one of the operations illustrated in FIG. 3 may be performed simultaneously or in parallel with other operations, and the order of the operations may be changed. Furthermore, at least one of the operations may be omitted, and other operations may be additionally performed. The operations illustrated in FIG. 3 may be performed by at least one component included in a computing device of an oral scanner tip manufacturing device.

[0058] In operation (310), the oral scanner tip manufacturing device can manufacture an oral scanner tip (e.g., the oral scanner tip (200) of FIG. 1 or FIG. 2) by plastic injection.

[0059] In operation (320), the intraoral scanner tip manufacturing device can mask a portion of the inner surface of the intraoral scanner tip. Referring to FIGS. 4A and 4B , a method of masking a portion of the inner surface of the intraoral scanner tip (200) will be described. The intraoral scanner tip manufacturing device can mask a specific area of ​​the intraoral scanner tip (200) using a masking member (410). For example, the intraoral scanner tip manufacturing device can mask a rear 20-30% area of ​​the entire length of the intraoral scanner tip (200) with the masking member (410). Alternatively, the intraoral scanner tip manufacturing device can mask an area where a reflector (e.g., a reflector (210) of FIG. 1 or 2) is mounted and an area where a scan window (e.g., a scan window (220) of FIG. 2) is formed with the masking member (410).

[0060] At this time, referring to FIG. 4a, an example is shown in which the masking member (410) is masked in a rear 0.3L region of the oral scanner tip (200), i.e., a rear 30% region with respect to the total length L of the oral scanner tip (200), but this is an area that is not included in the field of view of the camera module (e.g., the camera module (120) of FIG. 1 or FIG. 2) in any case, and may be specified differently within a range of 20 to 30% depending on the specifications of the camera module.

[0061] Returning to FIG. 3 again, the oral scanner tip manufacturing device can control the positioning of a sandblasting gun inside the oral scanner tip in operation (330), and spray an abrasive onto the inner surface of the oral scanner tip from the sandblasting nozzle in operation (340).

[0062] According to one embodiment, the oral scanner tip manufacturing device can perform a sandblasting process after moving the sandblasting gun (420) so as to be positioned inside the fixed oral scanner tip (200) as shown in FIG. 4A. More specifically, the oral scanner tip manufacturing device can spray an abrasive from a sandblasting nozzle (421) onto the inner surface of the oral scanner tip (200) while moving the sandblasting gun (420) in the opposite direction to the direction in which the fixed oral scanner tip (200) is positioned.

[0063] According to another embodiment, the oral scanner tip manufacturing device can perform a sandblasting process after moving the oral scanner tip (200) so that the fixed sandblasting gun (420) is positioned inside, as shown in FIG. 4B. More specifically, the oral scanner tip manufacturing device can spray an abrasive onto the inner surface of the oral scanner tip (200) from the sandblasting nozzle (421) while moving the oral scanner tip (200) in the opposite direction to the direction in which the fixed sandblasting gun (420) is positioned.

[0064] At this time, the sandblasting nozzle (421) may be a nozzle formed at regular intervals in the circumferential direction on the outer surface of a disk-shaped member provided at the tip of the sandblasting gun (420), and the abrasive supplied through the sandblasting gun (420) can be sprayed uniformly in the entire circumferential direction by ejecting the abrasive at a constant discharge pressure.

[0065] Meanwhile, the oral scanner tip manufacturing device can vary the moving speed of the oral scanner tip (200) or the sandblasting gun (420) depending on the shape of the oral scanner tip (200) during the process of spraying an abrasive onto the inner surface of the oral scanner tip (200). For example, if the shape of the oral scanner tip (200) is implemented as a tapered shape in which the cross-sectional diameter increases toward the rear end, the distance from the exit of the sandblasting nozzle (421) to the inner surface of the oral scanner tip (200) gradually increases as the sandblasting gun (420) is moved toward the rear end.

[0066] As a result, the number per unit area of ​​blasted abrasive particles reaching the inner surface of the oral scanner tip (200) may gradually decrease compared to the leading end of the oral scanner tip (200). Therefore, it may be difficult to form a uniform inner surface roughness on the inner surface of the oral scanner tip (200).

[0067] To solve this, the oral scanner tip manufacturing device can be controlled to keep the number of blasted abrasive particles per unit area reaching the inner surface of the oral scanner tip (200) as uniform as possible by reducing the moving speed of the oral scanner tip (200) or the moving speed of the sandblasting gun (420) as it goes toward the rear end.

[0068] Additionally, the abrasive used in the sandblasting process may be #60 white fused alumina, but the type of such abrasive is only one example and is not limited to the above examples.

[0069]

[0070] FIG. 5 is a diagram illustrating a method for manufacturing an oral scanner tip according to one embodiment. In one embodiment, at least one of the operations illustrated in FIG. 5 may be performed simultaneously or in parallel with other operations, and the order of the operations may be changed. In addition, at least one of the operations may be omitted, and other operations may be additionally performed. The operations illustrated in FIG. 5 may be performed by at least one component included in a computing device of an oral scanner tip manufacturing device.

[0071] In operation (510), the oral scanner tip manufacturing device can process a mold used for plastic injection of an oral scanner tip (e.g., the oral scanner tip (200) of FIG. 1 or FIG. 2).

[0072] In operation (520), the oral scanner tip manufacturing device may post-process the surface of the processed mold using a sandblasting process. More specifically, the oral scanner tip manufacturing device may perform the sandblasting process while masking a portion of the processed mold. At this time, the masked area may be a rearward 20-30% area of ​​the entire length of the mold corresponding to the oral scanner tip, and in another embodiment, the masked area may be an area corresponding to a reflector mounting area and a scan window area in the mold corresponding to the oral scanner tip.

[0073] In operation (530), the oral scanner tip manufacturing device may inject an oral scanner tip using a mold that has been post-processed through a sandblasting process. At this time, the inner surface of the injected oral scanner tip may be sandblasted to form a matte surface.

[0074] Here, the inner surface of the oral scanner tip may be sandblasted only for an area corresponding to 70 to 80% of the total length from the tip of the oral scanner tip. It is desirable for the inner surface of the oral scanner tip, thus sandblasted, to have an average surface roughness value within the range of 20 to 40 μm.

[0075]

[0076] FIG. 6 a is a photograph of a white surface taken from an oral scanner tip that has not been sandblasted according to one embodiment, and FIG. 6 b is a photograph of a white surface taken from an oral scanner tip that has been sandblasted according to one embodiment and manufactured by the manufacturing method of the present invention.

[0077] Each number listed below the photographs in FIGS. 6 a and 6b represents the average brightness value of pixels within the area of ​​the scanned image as the area to be scanned increases. A higher average brightness value may indicate an increase in the brightness of pixels captured from the inner surface of the oral scanner tip due to diffuse reflection.

[0078] As the brightness of pixels increases within the scan target area, the contrast of the image acquired during scanning may decrease, resulting in a deterioration in image quality.

[0079]

[0080] FIG. 7 is a drawing showing a photograph of a tooth taken from an oral scanner tip according to one embodiment.

[0081] Figure (710) shows a photograph of a tooth taken from an oral scanner tip that has not been sandblasted, and Figure (720) shows a photograph of a tooth taken from an oral scanner tip that has been sandblasted and manufactured by the manufacturing method of the present invention.

[0082] Referring to FIG. 7, it can be confirmed that the contrast exhibited by the structured light of the stripe pattern is more clearly formed in the sandblasted oral scanner tip manufactured by the manufacturing method of the present invention.

[0083]

[0084] FIG. 8 is a drawing for explaining a computing device of an oral scanner tip manufacturing device according to one embodiment.

[0085] The hardware devices described herein may be configured to operate as one or more software modules to perform the operations of the embodiments, and vice versa.

[0086] Referring to FIG. 8, the computing device (800) may include one or more processors (810) and may include a memory (820) for loading or storing a computer program executed by the processor (810). The processor (810) and the memory (820) are interconnected via a communication unit (830), and the computing device (800) may additionally include a display (840). However, in addition to the above components, a person skilled in the art to which the present disclosure pertains may recognize that general and other components may be added, and that other general components may be further included in addition to the computing device (800) described herein via the communication unit (830).

[0087] The processor (810) can control the overall operation of each component of the computing device (800). The processor (810) can be implemented as a processing circuit, such as a system on chip (SoC) or an integrated circuit (IC).

[0088] The processor (810) may include one or more processors. For example, the processor (810) may include a combination of one or more processors, such as a central processing unit (CPU), a microprocessor unit (MPU), a microcontroller unit (MCU), a graphic processing unit (GPU), a neural processing unit (NPU), a digital signal processor (DSP), an application processor (AP), a communication processor (CP), or any other form of processor (810) well known in the art of the present disclosure.

[0089] The processor (810) may perform operations for at least one application or computer program to execute methods / operations according to various embodiments described herein.

[0090] The memory (820) can store one or a combination of two or more of various data, commands, and information used by components included in the computing device (800). The memory (820) can include volatile memory and / or nonvolatile memory. Nonvolatile memory can include a hard disk, a floppy disk, a magnetic tape, a compact disc read-only memory (CD-ROM), a digital versatile disc (DVD), a floptical disk, a solid-state drive (SSD), and cloud storage.

[0091] The communication unit (830) is a component that enables the computing device (800) to exchange information with external devices or networks. The communication unit (830) may include various interfaces for wired and wireless communication. For example, the communication unit (830) may include a network interface for wired communication (e.g., an Ethernet card) connected to the processor (810) and memory (820) via a system bus (e.g., a PCI bus), or a wireless communication module (e.g., Wi-Fi, Bluetooth). Through this, the computing device (800) can transmit and receive data with a wide network such as the Internet or other external devices, thereby performing functions such as software updates, communication with remote servers, and data sharing with other devices.

[0092] The display (840) may display an execution screen of a computer program. The display (840) may be a separate device connected to the computing device (800), or in the case of a computing device (800) such as a terminal that a user can carry, such as a smartphone or tablet, the display (840) may be a component of the computing device (800). The screen displayed on the display (840) may be prior to inputting information into the program or may be the result of the program's execution.

[0093] The embodiments described herein may be implemented using hardware components, software components, and / or a combination of hardware components and software components. For example, the devices, methods, and components described in the embodiments may be implemented using a general-purpose computer or a special-purpose computer, such as, for example, a processor, a controller, an arithmetic logic unit (ALU), a digital signal processor, a microcomputer, a field programmable gate array (FPGA), a programmable logic unit (PLU), a microprocessor, or any other device capable of executing instructions and responding to them. The processing device may execute an operating system (OS) and software applications running on the OS. The processing device may also access, store, manipulate, process, and generate data in response to the execution of the software. For ease of understanding, the processing device is sometimes described as being used alone; however, one of ordinary skill in the art will recognize that the processing device may include multiple processing elements and / or multiple types of processing elements. For example, a processing unit may include multiple processors or a single processor and a single controller. Other processing configurations, such as parallel processors, are also possible.

[0094] A computer program may include one or more actions implementing methods / operations according to various embodiments of the present disclosure, and may be stored in the memory (820) in software form. Here, the actions correspond to commands implemented in the computer program, and when the program is loaded into the memory, the processor executes the commands to perform operations according to various embodiments of the present specification. For example, the processor (810) executes a specific application program stored in the memory (820), receives input from a user (e.g., through a touch input of the display (840), receives necessary data from an external server through the communication unit (830), and then processes the data. The processing result is displayed on the display (840) and provided to the user.

[0095] Software may include a computer program, code, instructions, or a combination of one or more of these, which may configure a processing unit to perform a desired operation or may independently or collectively command the processing unit. Examples of program instructions include machine language 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 software and / or data may be stored on any type of machine, component, physical device, virtual equipment, computer storage medium, or device for interpretation by the processing unit or for providing instructions or data to the processing unit. The software may be distributed over networked computer systems and stored or executed in a distributed manner. The software and data may be stored on a computer-readable recording medium and retrieved by a computer.

[0096] A computer-readable recording medium can store program commands, data files, data structures, etc., singly or in combination, and the program commands recorded on the medium may be specially designed and configured for the embodiment or may be 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 media such as CD-ROMs and DVDs, magneto-optical media such as floptical disks, and hardware devices specially configured to store and execute program commands such as ROMs, RAMs, and flash memories. That is, the computer-readable recording medium can be provided in the form of a non-transitory storage medium. Here, 'non-transitory' only means that the storage medium is a tangible device and does not contain signals such as electromagnetic waves, and this term does not distinguish between cases where data is stored semi-permanently and cases where it is stored temporarily in the storage medium.

[0097] It is to be noted that other application examples of the present invention are not limited to the embodiments set forth above, and embodiments can be formed by appropriately combining claims that are not explicitly cited in the claims.

[0098] Although the embodiments of the present invention have been described above, those skilled in the art will be able to modify and change the present invention in various ways by adding, changing, deleting or adding components, etc., within a scope that does not depart from the essential technical idea of ​​the present invention described in the claims, and this is also included within the scope of the rights of the present invention.

Claims

1. In the method for manufacturing an oral scanner tip, Step of manufacturing an oral scanner tip through plastic injection; A step of masking an inner portion of the oral scanner tip using a masking member; A step of controlling the sandblasting gun to be positioned inside the masked oral scanner tip by the masking member; and A step of spraying an abrasive onto the inner surface of the oral scanner tip from the sandblasting nozzle of the sandblasting gun. A method for manufacturing an oral scanner tip comprising:

2. In paragraph 1, The above masking step is, A method for manufacturing an oral scanner tip, wherein the rear 20 to 30% area of ​​the entire length of the oral scanner tip is masked with the masking member.

3. In paragraph 1, The above masking step is, A method for manufacturing an oral scanner tip, wherein the area where the reflector of the oral scanner tip is mounted and the area where the scan window is formed are masked with the masking member.

4. In paragraph 1, The above controlling step is, Move the sandblasting gun so that it is positioned inside the fixed oral scanner tip, The above spraying step is, A method for manufacturing an oral scanner tip, wherein the sandblasting gun is moved in a direction opposite to the direction in which the fixed oral scanner tip is positioned while spraying an abrasive onto the inner surface of the oral scanner tip from the sandblasting nozzle.

5. In paragraph 1, The above controlling step is, Move the oral scanner tip so that the fixed sandblasting gun is positioned inside, The above spraying step is, A method for manufacturing an oral scanner tip, wherein the oral scanner tip is moved in a direction opposite to the direction in which the fixed sandblasting gun is positioned while spraying an abrasive onto the inner surface of the oral scanner tip from the sandblasting nozzle.

6. In paragraph 1, The above spraying step is, A method for manufacturing an oral scanner tip, wherein the moving speed of the oral scanner tip or the sandblasting gun is varied during the process of spraying an abrasive onto the inner surface of the oral scanner tip.

7. In paragraph 6, The moving speed of the oral scanner tip or the sandblasting gun is A method for manufacturing an oral scanner tip, the method being determined based on the shape of the oral scanner tip.

8. In paragraph 1, The inner surface of the oral scanner tip onto which the above abrasive is sprayed is A method for manufacturing an oral scanner tip having an average surface roughness value within a range of 20 to 40 μm.

9. In the method for manufacturing an oral scanner tip, A step of processing a mold used for plastic injection of an oral scanner tip; A step of post-processing the surface of the processed mold using a sandblasting process; and A step of injecting the oral scanner tip using a mold post-processed through the above sandblasting process. A method for manufacturing an oral scanner tip comprising:

10. For the oral scanner tip included in the oral scanner, A reflector mounted on the inner slope of the hull; and A scan window formed on one side of the tip to serve as a passage for light sources entering or exiting the outside through the above reflector. Including, The above oral scanner tip is, An oral scanner tip that is detachably connected to a main body including an optical output unit and a camera module.

11. In paragraph 10, The above oral scanner tip is, An intraoral scanner tip whose inner surface is formed into a matte surface through a sandblasting process.

12. In paragraph 10, The above oral scanner tip is, An oral scanner tip having a sandblasting process performed on an inner surface corresponding to 70 to 80% of the length from the tip.

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