Method for manufacturing a dental scanner head and a dental scanner head manufactured by the method

Abstract

This invention discloses a method for manufacturing a dental scanner head and a dental scanner head manufactured by the method. The method for manufacturing a dental scanner head includes the following steps: manufacturing a dental scanner head by plastic injection molding; shielding a portion of the internal surface of the dental scanner head using a shielding member; controlling the position so that a sandblasting gun is located inside the dental scanner head shielded by the shielding member; and spraying abrasive from the sandblasting nozzle of the sandblasting gun onto the inner surface of the dental scanner head.

Description

Technical Field

[0001] This invention relates to a method for manufacturing a dental scanner head and a dental scanner head manufactured by the method.

[0002] More specifically, this invention relates to a manufacturing method for forming a matted surface by sandblasting the inner surface of a dental scanner head. This method suppresses diffuse reflection caused by digital light processing (DLP) illumination within the optical path of the dental scanner head. Through this technique, the invention enables clearer differentiation of the DLP black / white pattern of the dental scanner, thereby improving the scanning quality. Background Technology

[0003] Dental prostheses used in dental restoration treatment are usually made by taking an impression of the patient's damaged tooth, then making a plaster cast, and finally entrusting a dental technician to make the restoration based on the cast.

[0004] However, this existing method of manufacturing restorations indirectly obtains treatment data for diagnosing and measuring the condition of a patient's teeth by using dental plaster models, thus requiring a significant amount of time and manpower to produce the restorations.

[0005] To address the problems existing in current impression-taking processes, 3D dental scanners have been widely adopted in recent years. These scanners are inserted into the patient's mouth to scan the teeth non-contactly, acquiring two-dimensional image data, and then generating a three-dimensional scan model based on this data. This allows for quick and convenient impression taking, and the generation of a 3D scan model enables more precise impressions, leading to more ideal clinical outcomes in treatment and diagnosis.

[0006] A 3D dental scanner essentially acquires a 2D image by collecting reflected light after a light source illuminates the subject, and then generates a 3D image through 2D image registration. In this case, the 3D dental scanner primarily employs confocal microscopy and light triangulation techniques to generate the 3D image.

[0007] Both of the above methods use the same structure, which is to use the light output unit installed inside the oral scanner to project light onto the surface of the teeth, which is the subject. The reflected light of the projected light is then imaged by the image sensor. Here, the projection light source can be patterned light or structured light, and digital light processing (DLP) is usually used to project this type of light.

[0008] Figure 1 The structure of a conventional oral scanner 10 is shown. The oral scanner 10 consists of an oral scanner head 200 on the front side and a main body 100 on the rear side. A reflector 210 is arranged on the front side of the oral scanner head 200, and a light output unit 110 and a camera module 120 are arranged inside the main body 100.

[0009] Although not shown in the figure, the main body 100 may also include a control unit and a cooling fan. If it is a wired dental scanner, the power supply and data transmission cables will be connected to the rear of the main body 100. If it is a wireless dental scanner, a battery can be installed inside the main body, and contact terminals for battery charging and a wireless transceiver unit can be arranged on the rear of the main body 100.

[0010] The light output unit 110 located in the main body 100 can illuminate the teeth and gums in the oral cavity with light of a predetermined wavelength range through a reflector. One or more such light output units 110 can be arranged on the front side of the main body 100, and the light source can be selectively one or more of the following: laser, light-emitting diode (LED), halogen lamp, incandescent lamp, infrared light source, ultraviolet light source or tri-color fluorescent lamp.

[0011] Although Figure 1 The light output unit 110 is located at the junction of the main body 100 and the dental scanner head 200, but is not limited to this arrangement. In addition, the light output unit 110 can also provide patterned light with a predetermined pattern.

[0012] The camera module 120 is disposed inside the front side of the main body 100 and is used to sense reflected light from the subject to acquire a two-dimensional image. That is, the camera module 120 can sense the reflected light that is irradiated by the light output section 110 onto the subject inside the oral cavity and then reflected as a two-dimensional image, thereby acquiring an image. At this time, the camera module 120 can be a solid-state imaging device with a photodiode as the light-receiving element and a charge-coupled device (CCD) as the charge-transfer element, or a low-power CMOS image sensor with a complementary metal-oxide-semiconductor (CMOS) structure.

[0013] In addition, the camera module 120 can be equipped with a lens, a zoom lens and a waveplate, and can be equipped with a beam splitter as needed.

[0014] Furthermore, the control unit controls the light output unit 110 and the camera module 120. For example, the control unit sends predetermined pattern information to the light output unit 110 and performs signal processing and control actions on the data sensed 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 also control the speed of the cooling fan.

[0015] The lens section of the camera module 120 is an optical component composed of lenses, etc. The function of these lenses is to illuminate the subject with the light output from the light output section 110 and reflect the reflected light from the subject back to the camera module 120. These lenses are mounted on the front of the camera module 1200 or on a separate lens holder to gather the reflected light from the subject and transmit it to the image sensing section.

[0016] The dental scanner head 200 is mounted on the front side of the main body 100 and is inserted into the oral cavity. It is detachably secured to the main body 100 for easy maintenance and upkeep of the dental scanner. The dental scanner head 200 can be made in a shape that extends a predetermined length with the same diameter, or it can be made in a structure where the diameter gradually decreases towards the front end, that is, a tapered structure, to facilitate insertion into the oral cavity.

[0017] A reflector 210 is mounted on the front end of the dental scanner head 200. The reflector 210 is positioned at the front end of the dental scanner head 200 to reflect light emitted from the light output unit 110 onto the subject, or to reflect reflected light from the subject onto the camera module 120. The reflector 210 can be fixedly mounted on the scanner head 200 at an appropriate angle, or it can be configured to adjust the angle as needed.

[0018] In DLP illumination, stray light is generated during reflection by mirror 210. Existing dental scanners with the aforementioned structure experience diffuse reflection within the scanner head due to this stray light. This diffuse reflection hinders the sharpness of the DLP pattern, ultimately making it difficult to form a clear DLP black / white pattern and reducing image resolution.

[0019] However, no relevant technology has been proposed to solve the above problems to date. Summary of the Invention

[0020] Technical problems to be solved

[0021] This invention provides a method for manufacturing a matte surface by sandblasting the inner surface of a dental scanner head, which can suppress diffuse reflection in the optical path inside the dental scanner head under DLP illumination.

[0022] Therefore, the present invention can more clearly distinguish the black / white patterns of the DLP in the dental scanner, thereby improving the scanning quality of the dental scanner.

[0023] Technical means to solve technical problems

[0024] A method for manufacturing a dental scanner head according to an embodiment of the present invention includes the following steps: manufacturing the dental scanner head by plastic injection molding; shielding a portion of the inner surface of the dental scanner head using a shielding member; controlling a sandblasting gun to be located inside the dental scanner head shielded by the shielding member; and spraying abrasive from the sandblasting nozzle of the sandblasting gun onto the inner surface of the dental scanner head.

[0025] The masking step involves using the masking device to mask the rear 20% to 30% of the overall length of the oral scanner head.

[0026] The masking step involves using the masking device to mask the area of ​​the dental scanner head where the reflector is mounted and the area where the scanning window is formed.

[0027] The control step involves moving the sandblasting gun to a position inside the fixed dental scanner head, and the blasting step involves moving the sandblasting gun in the opposite direction to the location of the fixed dental scanner head while simultaneously blasting abrasive from the sandblasting nozzle onto the inner surface of the dental scanner head.

[0028] The control step involves moving the dental scanner head so that the fixed sandblasting gun is located inside the dental scanner head. The blasting step involves moving the dental scanner head in the opposite direction to the direction of the fixed sandblasting gun while spraying abrasive from the sandblasting nozzle onto the inner surface of the dental scanner head.

[0029] During the blasting step, the moving speed of the dental scanner head or the sandblasting gun is changed while the abrasive is blasted onto the inner surface of the dental scanner head.

[0030] The moving speed of the dental scanner head or the sandblasting gun is determined based on the shape of the dental scanner head.

[0031] The average surface roughness of the inner surface of the dental scanner head after spraying the abrasive is in the range of 20 μm to 40 μm.

[0032] A method for manufacturing a dental scanner head according to an embodiment includes the following steps: processing a mold for injection molding a dental scanner head using plastic; performing a post-treatment on the surface of the processed mold using a sandblasting process; and injection molding the dental scanner head using the mold post-treated by the sandblasting process.

[0033] An oral scanner according to one embodiment includes an oral scanner head comprising: a reflector mounted on the inner inclined surface of a front end; and a scanning window formed on one side of the front end to serve as a channel for a light source to enter or exit from the outside via the reflector. The oral scanner head is detachably attached to a body including a light output section and a camera module.

[0034] The inner surface of the dental scanner head is treated with a sandblasting process to form a matte surface.

[0035] The inner surface of the scanning head of the oral scanner, corresponding to 70% to 80% of the length direction from the front end, is treated with a sandblasting process.

[0036] Invention Effects

[0037] According to one embodiment of the present invention, the inner surface of the dental scanner head is formed into a matte surface by sandblasting, which can suppress the diffuse reflection problem of DLP illumination in the internal optical path of the dental scanner head.

[0038] Therefore, the present invention can more clearly distinguish the black / white patterns of the DLP in the dental scanner, thereby improving the scanning quality of the dental scanner. Attached Figure Description

[0039] Figure 1 A cross-sectional view showing the structure of a conventional dental scanner.

[0040] Figure 2 A cross-sectional view is shown of an oral scanner structure with an oral scanner head mounted according to one embodiment.

[0041] Figure 3 A flowchart illustrating a method for manufacturing a dental scanner head according to an embodiment.

[0042] Figure 4a and Figure 4b The accompanying drawing illustrates a method for masking a portion of the internal surface of an oral scanner head according to an embodiment.

[0043] Figure 5 A flowchart illustrating a method for manufacturing a dental scanner head according to another embodiment.

[0044] Figure 6a A photograph of a white surface taken by an un-blasted dental scanner head according to an embodiment is shown. Figure 6b A white photograph of a dental scanner head that has undergone sandblasting and is manufactured according to an embodiment of the present invention is shown.

[0045] Figure 7 The accompanying drawing shows a photograph of teeth taken by an oral scanner head according to an embodiment.

[0046] Figure 8 This is a diagram illustrating the structure of a computing device according to one embodiment. Detailed Implementation

[0047] Various embodiments of the present invention will now be described with reference to the accompanying drawings. The differences between the embodiments are not mutually exclusive and should be understood in conjunction with the accompanying drawings. Specific shapes, structures, and features associated with these embodiments may also be applied to other embodiments without departing from the technical spirit and scope of the present invention.

[0048] As described above in the background section of this invention, Figure 1 The structure of a conventional oral scanner 10 is shown.

[0049] The oral scanner 10 consists of an oral scanner head 200 on the front side and a main body 100 on the rear side. A reflector 210 is arranged on the front side of the scanner head 200, and a light output unit 110 and a camera module 120 are arranged inside the main body 100. The present invention relates to the oral scanner head 200 in the components of the oral scanner 10 described above.

[0050] Figure 2 The accompanying drawing specifically illustrates the structure of a dental scanner head according to an embodiment of the present invention.

[0051] See Figure 2 The scanning head 200 of the oral scanner of the present invention is installed on the front side of the main body 100 and is inserted into the oral cavity. It is detachably attached to the main body 100 to facilitate the maintenance and replacement of the oral scanner 10.

[0052] The dental scanner head 200 of the present invention can be designed to extend a predetermined length with the same diameter, or it can be designed to gradually decrease in diameter towards the front end of the scanner head, i.e., tapered, so as to facilitate insertion into the oral cavity. However, considering the need to perform scanning smoothly in the limited oral cavity space and the size of the light output unit 110 or camera module 120 mounted on the main body, the dental scanner head 200 of the present invention preferably adopts a tapered design.

[0053] See Figure 2 The oral scanner 10 of the present invention generally comprises a main body 100 and an oral scanner head 200 detachable from the main body 100. The main body 100 may be equipped with a camera module 120 consisting of a light output unit 110, a lens unit 121, and an image sensing unit 122, as well as a control unit and a cooling fan (not shown in the figures). Here, if the oral scanner 10 is a wired oral scanner, the cable for transmitting power and data can be connected to the rear side of the main body. In contrast, if the oral scanner 10 is a wireless oral scanner, a battery can be installed inside the main body 100, and contact terminals for battery charging and a wireless transceiver unit can be arranged on the rear side of the main body 100.

[0054] On the front side of the main body 100, the main body cover 130 is attached to the main body 100 to enclose the inner space of the main body 100. The main body cover 130 has a hole in the center so that light can pass through the hole to reach the camera module 120.

[0055] The dental scanner head 200 is attached to the outer peripheral surface of the body cover 130, and is attached to the body 100 in a detachable manner for easy maintenance and replacement.

[0056] See Figure 2 The scanning head 200 of the oral scanner can be a tapered shape with a diameter that gradually decreases towards the front end, so as to facilitate insertion into the oral cavity.

[0057] The reflector 210 is mounted on the inclined surface inside the front end of the oral scanner head 200. The scanning window 220 can be formed on the front end surface of the oral scanner head 200 corresponding to the position where the light source incident on the reflector 210 is reflected. The scanning window 220 is the path of light illuminating the teeth and gums and the light reflected by the teeth and gums.

[0058] Figure 3 This is a drawing illustrating a method for manufacturing a dental scanner head according to an embodiment of the present invention. In one embodiment, Figure 3 One or more steps can be executed in parallel or concurrently with other steps, and the order of steps can be changed. In addition, one or more steps can be omitted, as well as additional steps can be executed. Figure 3 The steps shown can be performed by one or more components included in the computing device of the oral scanner head manufacturing apparatus.

[0059] In step 310, the dental scanner head manufacturing apparatus can manufacture the dental scanner head by plastic injection molding (e.g.: Figure 1 or Figure 2 The oral scanner head 200).

[0060] In step 320, the dental scanner head manufacturing apparatus may shield a portion of the internal surface of the dental scanner head. See also Figure 4a and Figure 4b To illustrate a method for masking a portion of the internal surface of a dental scanner head 200, a dental scanner head manufacturing apparatus can use a masking member 410 to mask a specific area of ​​the dental scanner head 200. For example, the dental scanner head manufacturing apparatus can use the masking member 410 to mask an area corresponding to the posterior side of the overall length of the dental scanner head 200. Alternatively, the dental scanner head manufacturing apparatus can use the masking member 410 to mask an area used for mounting a reflector (e.g., a mirror). Figure 1 or Figure 2 The area of ​​the reflector 210 and the area used to form the scanning window (e.g.: Figure 2 The area of ​​the scanning window (220) is masked.

[0061] At this time, in the reference Figure 4a In the example, the masking element 410 masks a 0.3L region on the rear side of the oral scanner head 200, that is, a region corresponding to 30% of the total length L of the oral scanner head 200. However, this region is not included in the camera module under any circumstances (e.g., Figure 1 or Figure 2 The area within the field of view of the camera module 120 can vary from 20% to 30% depending on the specifications of the camera module.

[0062] Back to Figure 3 The dental scanner head manufacturing apparatus can be controlled in step 330 such that the sandblasting gun is located inside the dental scanner head, and in step 340 the abrasive is sprayed from the sandblasting nozzle onto the inner surface of the dental scanner head.

[0063] According to one embodiment, such as Figure 4a As shown, the dental scanner head manufacturing apparatus can perform a sandblasting process after moving the sandblasting gun 420 to position it inside the fixed dental scanner head 200. More specifically, the dental scanner head manufacturing apparatus can spray abrasive from the sandblasting nozzle 421 onto the inner surface of the dental scanner head 200 while moving the sandblasting gun 420 in the opposite direction to the direction in which the fixed dental scanner head 200 is located.

[0064] According to another embodiment, such as Figure 4bAs shown, the dental scanner head manufacturing apparatus can perform a sandblasting process after moving the dental scanner head 200 so that the fixed sandblasting gun 420 is located inside the dental scanner head 200. More specifically, the dental scanner head manufacturing apparatus can spray abrasive from the sandblasting nozzle 421 onto the inner surface of the dental scanner head 200 while moving the dental scanner head 200 in the opposite direction to the direction of the fixed sandblasting gun 420.

[0065] At this time, the sandblasting nozzle 421 can be a nozzle formed at a predetermined interval along the circumferential direction on the outer peripheral surface of the front disc-shaped component of the sandblasting gun 420, and the abrasive is uniformly sprayed in the entire circumferential direction by spraying the abrasive with the sandblasting gun 420 at a predetermined spraying pressure.

[0066] Simultaneously, during the process of spraying abrasive onto the inner surface of the dental scanner head 200, the dental scanner head manufacturing apparatus can adjust the moving speed of the dental scanner head 200 or the sandblasting gun 420 according to the shape of the dental scanner head 200. For example, if the shape of the dental scanner head 200 is a cone with a cross-sectional diameter that gradually increases towards the rear end, then as the sandblasting gun 420 moves towards the rear end, the distance from the outlet of the sandblasting nozzle 421 to the inner surface of the dental scanner head 200 will gradually increase.

[0067] This results in a gradual decrease in the number of abrasive particles per unit area sprayed onto the inner surface of the dental scanner head 200 compared to the front end of the dental scanner head 200. This makes it difficult to achieve a uniform inner surface roughness on the inner surface of the dental scanner head 200.

[0068] To address this issue, the dental scanner head manufacturing apparatus can gradually reduce the moving speed of the dental scanner head 200 or the moving speed of the sandblasting gun 420 towards the rear end, so that the number of abrasive particles per unit area sprayed onto the inner surface of the dental scanner head 200 is as consistent as possible.

[0069] In addition, the abrasive used in the sandblasting process can be #60 white molten alumina, but the type of abrasive is only an example and the implementation is not limited to this.

[0070] Figure 5 This is an accompanying drawing illustrating a method for manufacturing a dental scanner head according to one embodiment. In one embodiment, Figure 5 One or more steps can be executed in parallel or concurrently with other steps, and the order of steps can be changed. In addition, one or more steps can be omitted, as well as additional steps can be executed. Figure 5 The steps shown can be performed by one or more components included in the computing device of the oral scanner head manufacturing apparatus.

[0071] In step 510, the dental scanner head manufacturing apparatus can manufacture dental scanner heads for plastic injection molding (e.g., for example: Figure 1 or Figure 2 The mold for the oral scanner head (200) is processed.

[0072] In step 520, the dental scanner head manufacturing apparatus can perform a sandblasting process on the surface of the processed mold for post-processing. More specifically, the dental scanner head manufacturing apparatus can perform the sandblasting process while partially masking the processed mold. In this case, the masked area can be the region corresponding to the rear 20% to 30% of the total length of the dental scanner head mold, or, in another embodiment, the masked area can be the region in the dental scanner head mold corresponding to the mounting area of ​​the reflector and the scanning window area.

[0073] In step 530, the dental scanner head manufacturing apparatus can use a mold post-sandblasting process to injection mold the dental scanner head. At this time, the inner surface of the completed injection molded dental scanner head is formed as a matte surface after sandblasting.

[0074] Here, on the inner surface of the dental scanner head, only 70% to 80% of the area along the overall length from the tip of the dental scanner head can be sandblasted. Preferably, the average surface roughness value of the sandblasted inner surface of the dental scanner head should be in the range of 20 μm to 40 μm.

[0075] Figure 6a A photograph of a white surface taken by an un-blasted dental scanner head according to an embodiment is shown. Figure 6b A white photograph of a dental scanner head that has undergone sandblasting and is manufactured according to an embodiment of the present invention is shown.

[0076] Figure 6a and Figure 6b The numbers listed below the photos represent the average brightness of the pixels within the corresponding area as the target area is scanned on the captured image. A higher average brightness value indicates greater pixel brightness captured on the inner surface of the dental scanner head due to diffuse reflection.

[0077] Therefore, if the pixel brightness increases within the target area being scanned, the image contrast obtained during the scanning process will decrease, resulting in a decline in image quality.

[0078] Figure 7 The accompanying drawing shows a photograph of teeth taken by an oral scanner head according to an embodiment.

[0079] Photograph 710 shows a photograph of teeth taken by an un-sandblasted dental scanner head, and photograph 720 shows a photograph of teeth taken by a sandblasted dental scanner head manufactured using the manufacturing method of the present invention.

[0080] See Figure 7 As can be seen, the contrast of the striped pattern structured light of the dental scanner head manufactured by the method of this invention after sandblasting is clearer.

[0081] Figure 8 This is an accompanying drawing illustrating a computing device for manufacturing an oral scanner head according to an embodiment.

[0082] The hardware device described in this specification can be configured to operate as one or more software modules to perform the actions of the embodiments, and vice versa.

[0083] See Figure 8 The computing device 800 may include one or more processors 810 and may include a memory 820 for loading or storing computer programs executed by the processors 810. The processors 810 and the memory 820 may be interconnected via a communication unit 830. The computing device 800 may further include a display 840. Furthermore, in addition to the above-described components, those skilled in the art to which this disclosure pertains will understand that other general or other components may be added, and other general components besides the computing device 800 described herein may be connected via the communication unit 830.

[0084] The processor 810 can control the overall operation of the various components 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).

[0085] Processor 810 may include one or more processors. For example, processor 810 may include a combination of one or more of the following: a central processing unit (CPU), a microprocessor unit (MPU), a micro controller unit (MCU), a graphics processing unit (GPU), a neural processing unit (NPU), a digital signal processor (DSP), an application processor (AP), a communication processor (CP), or any form of processor 810 known in the art.

[0086] The processor 810 performs operations on at least one application program or computer program to perform methods / operations according to various embodiments described in this specification.

[0087] The memory 820 can store one or more combinations of various data, instructions, and information used by the components of the computing device 800. The memory 820 may include volatile memory and / or non-volatile memory. Non-volatile memory may include hard disks, floppy disks, magnetic tapes, CD-ROMs (Compact Disc Read-Only Memory), DVDs (Digital Versatile Discs), magneto-optical disks, solid-state drives (SSDs), and cloud storage.

[0088] 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 wired communication network interface (e.g., an Ethernet card) connected to the processor 810 and memory 820 via a system bus (e.g., a PCI bus), and a wireless communication module (e.g., Wi-Fi, Bluetooth). Thus, the computing device 800 can send and receive data with wide area networks 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.

[0089] The display 840 can display the execution screen of a computer program. The display 840 can be a standalone device connected to the computing device 800, or it can be integrated into the computing device 800 as part of the computing device 800, such as a smartphone or tablet computer. The screen displayed on the display 840 can be the interface before information is input into the program, or the result after the program execution.

[0090] The embodiments described in this specification can be implemented using hardware components, software components, and / or combinations of hardware and software components. For example, the apparatus, methods, and components described in the embodiments can be implemented using a general-purpose computer or a special-purpose computer, such as a processor, controller, arithmetic logic unit (ALU), digital signal processor, microcomputer, field-programmable gate array (FPGA), programmable logic unit (PLU), microprocessor, or any other device capable of executing and responding to instructions. The processing device can execute an operating system (OS) and software applications running on that operating system. Furthermore, the processing device responds to the execution of the software, thereby accessing, storing, manipulating, processing, and generating data. For ease of understanding, a configuration with only one processing device has been described, but those skilled in the art will understand that a processing device can include multiple processing elements and / or multiple types of processing elements. For example, a processing device can include multiple processors or one processor and one controller. Furthermore, it can also include other processing configurations similar to parallel processors.

[0091] A computer program may include one or more actions implemented by methods / operations according to various embodiments of this disclosure, and may be stored as software in memory 820. Each action corresponds to an instruction implemented in the computer program. After the program is loaded into memory, the processor executes the corresponding instructions to complete the operations of the various embodiments described in this specification. For example, processor 810 may execute a specific application stored in memory 820, receive input from the user (e.g., touch input via display 840), receive required data from an external server via communication unit 830, and process the data. The processing result is then displayed on display 840 and provided to the user.

[0092] Software can include computer programs, code, instructions, or combinations thereof, and can configure a processing device to operate in a predetermined manner, or issue instructions to the processing device individually or collectively. Examples of program instructions include not only machine code generated by a compiler, but also high-level language code executed by a computer through an interpreter or similar means. Software and / or data can be stored in any type of machine, component, physical device, virtual equipment, computer storage medium, or device for interpretation by the processing device, or for providing instructions or data to the processing device. Software can also be distributed across network-connected computer systems for distributed storage or execution. Software and data can be stored in computer-readable recording media and read by a computer.

[0093] Computer-readable media can include program instructions, data files, data structures, etc., either individually or in combination. The program instructions recorded on the medium can be instructions specifically designed and configured to implement embodiments, or instructions that can be used by a person skilled in the art of computer software based on commonly known methods. Computer-readable recording media can include magnetic media such as hard disks, floppy disks, and magnetic tapes; optical media similar to CD-ROMs and DVDs; magneto-optical media similar to floppy disks; and hardware devices specifically configured for storing and executing program instructions, such as read-only memory (ROM), random access memory (RAM), and flash memory. In other words, computer-readable recording media can be provided in the form of non-transitory storage media. Here, "non-transitory" only indicates that the storage medium is a tangible device, excluding signals such as electromagnetic waves, and is not used to distinguish whether data is stored semi-permanently or temporarily in the storage medium.

[0094] Other applications of the present invention are not limited to the above-described embodiments; embodiments can also be constructed by appropriately combining claims that do not have explicit referential relationships.

[0095] The present invention has been described above with reference to embodiments. However, those skilled in the art can make various modifications and alterations to the present invention by adding, changing, deleting or replacing constituent elements without departing from the essential technical concept of the present invention as described in the claims. Such modifications and alterations should also be included within the protection scope of the present invention.

Claims

1. A method for manufacturing a scanning head for an oral scanner, characterized in that, Includes the following steps: The scanning head of an oral scanner is manufactured using plastic injection molding. A portion of the internal surface of the oral scanner head is shielded using a shielding device; Controlling the sandblasting gun to be positioned inside the dental scanner head, which is shielded by the shielding element; and Abrasive is sprayed from the blasting nozzle of the blasting gun onto the inner surface of the scanning head of the oral scanner.

2. The method for manufacturing a dental scanner head according to claim 1, characterized in that, The masking step involves using the masking device to mask the rear 20% to 30% of the overall length of the oral scanner head.

3. The method for manufacturing a dental scanner head according to claim 1, characterized in that, The masking step involves using the masking device to mask the area of ​​the dental scanner head where the reflector is mounted and the area where the scanning window is formed.

4. The method for manufacturing a dental scanner head according to claim 1, characterized in that, The control step involves moving the sandblasting gun so that it is positioned inside the fixed dental scanner head. The blasting step involves moving the blasting gun in the opposite direction to the direction of the fixed dental scanner head while blasting abrasive from the blasting nozzle onto the inner surface of the dental scanner head.

5. The method for manufacturing a dental scanner head according to claim 1, characterized in that, The control step involves moving the dental scanner head so that the fixed sandblasting gun is located inside the dental scanner head. The spraying step involves moving the dental scanner head in the opposite direction to the fixed sandblasting gun while spraying abrasive from the sandblasting nozzle onto the inner surface of the dental scanner head.

6. The method for manufacturing a dental scanner head according to claim 1, characterized in that, During the blasting step, the moving speed of the dental scanner head or the sandblasting gun is changed while the abrasive is blasted onto the inner surface of the dental scanner head.

7. The method for manufacturing a dental scanner head according to claim 6, characterized in that, The moving speed of the dental scanner head or the sandblasting gun is determined based on the shape of the dental scanner head.

8. The method according to claim 1, characterized in that, The average surface roughness of the inner surface of the dental scanner head after spraying the abrasive is in the range of 20 μm to 40 μm.

9. A method for manufacturing a scanning head for an oral scanner, characterized in that, Includes the following steps: Processing the mold for the plastic injection molding of the dental scanner head; The surface of the processed mold is post-treated using a sandblasting process; and The dental scanner head is injection molded using a mold post-processed by the aforementioned sandblasting process.

10. An oral scanner head included in an oral scanner, characterized in that, include: A reflector, which is mounted on the inner inclined surface of the front end; and A scanning window, formed on one side of the front end, serves as a channel for light sources to enter or exit from the outside via the reflector. The dental scanner head is detachably integrated into the main body, which includes a light output unit and a camera module.

11. The dental scanner head according to claim 10, characterized in that, The inner surface of the dental scanner head is treated with a sandblasting process to form a matte surface.

12. The dental scanner head according to claim 10, characterized in that, The inner surface of the scanning head of the oral scanner, corresponding to 70% to 80% of the length direction from the front end, is treated with a sandblasting process.

Images