Composite scanning system and method for oral cavity and impression

Abstract

According to the oral cavity and impression composite scanning system and method of the present invention, oral cavity scanning data of an oral cavity object can be acquired and stored, and impression scanning data of an oral cavity object can be selectively stored from an oral cavity scanning data region that meets a preset judgment condition. By using the oral cavity scanning data region that meets the preset judgment condition as the impression scanning data, final scanning data with high reliability can be acquired, and an accurate prosthesis can be manufactured.

Description

Technical Field

[0001] This invention relates to a system and method for multi-scanning of oral cavity and impression, and more specifically, to a system and method for multi-scanning of oral cavity and impression: after acquiring oral cavity scan data using an oral scanner, the impression scan data is aligned with the oral cavity scan data during the acquisition of impression scan data to ultimately obtain a merged digital data. Background Technology

[0002] Typically, 3D scanning is used in various industrial fields such as reverse engineering, measurement, inspection, content creation, computer-aided design / computer-aided manufacturing (CAD / CAM). With the development of computing technology, its scanning performance is constantly improving, and its application areas are gradually expanding.

[0003] In recent years, a real-time scanning technology has been developing rapidly. This technology can acquire several frames of data per second and, through automated data processing, enables ordinary users without professional training to easily acquire 3D data.

[0004] Among them, real-time scanning often adopts structured light method. This method mainly uses an optical projection device to project a structured pattern onto the object being measured, and then uses an imaging device to acquire the image and analyze the acquired image to calculate the three-dimensional data.

[0005] This structured light method can acquire large areas of 3D data at once, making it suitable for real-time scanning that measures 3D data while moving the scanner rapidly.

[0006] However, even with a significant reduction in the number of patterns, the positional relationship between the object being measured and the scanner changes slightly each time a pattern is captured during real-time measurement as the object moves. Therefore, it is designed to be robust to a certain extent when there are a large number of patterns being scanned in real time. Even so, there is still the problem of reduced data quality and acquisition volume due to movement. Summary of the Invention

[0007] Technical issues

[0008] The purpose of this invention is to provide a composite scanning system and method for oral cavity and impression: after acquiring oral cavity scanning data using an oral scanner, the impression scanning data is aligned with the oral cavity scanning data during the acquisition of impression scanning data to finally obtain a merged digital data, thereby enabling the manufacture of a refined prosthesis using the acquired digital data.

[0009] The technical problems of this invention are not limited to those mentioned above. Those skilled in the art to which this invention pertains can clearly understand other technical problems not mentioned through the following description. Summary of the Invention

[0011] The composite scanning system for oral cavity and impression of the present invention may include: an oral scanner for scanning oral objects; a storage unit for storing oral scanning data acquired from the oral scanner and selectively storing impression scanning data of the oral objects according to preset judgment conditions; a judgment unit for judging whether the oral scanning data meets the judgment conditions and guiding the selective storage of the impression scanning data; and a control unit for controlling the selected area portion of the impression scanning data that meets the judgment conditions to be applied to the corresponding area of ​​the oral scanning data.

[0012] Furthermore, the above judgment conditions may include at least one of the following conditions: the boundary lines in the above oral scan data are not clearly displayed; or there is a post area; or there is a metal-containing area.

[0013] Furthermore, the control unit may include a simulation unit, which is used to receive information about the region adjacent to the selected region from the storage unit, and to automatically perform a simulation before applying the information to replace the selected region.

[0014] On the other hand, the composite scanning method for oral cavity and impression of the present invention may include: an oral cavity scanning data storage step, which stores oral cavity scanning data by scanning an oral cavity object; an impression pattern conversion step, which converts the oral cavity scanning data into an impression pattern to correspond to selectively stored impression scanning data; a selected area replacement application step, which partially acquires the scan data for a selected area from the impression scanning data and applies it to the oral cavity scanning data converted into the impression pattern; and a final scan data acquisition step, which reconverts the oral cavity scanning data for which the impression scanning data is applied in the selected area into an oral cavity pattern as the initial pattern to acquire final scan data.

[0015] Furthermore, it may include a prosthesis manufacturing step, in which the prosthesis is manufactured by transmitting the final data to a design program.

[0016] Furthermore, the aforementioned oral object can be an oral model or the inside of a patient's mouth.

[0017] Furthermore, after the oral cavity scan data storage step described above, a step for determining whether or not to store the impression scan data may be included. In this step, the impression scan data is selectively stored based on whether or not the oral cavity scan data contains a preset judgment condition.

[0018] Furthermore, the above judgment conditions may include at least one of the following conditions: the boundary lines in the above oral scan data are not clearly displayed; or there is a post area; or there is a metal-containing area.

[0019] Furthermore, the aforementioned impression scan data may be data stored by selectively scanning only the portions of the oral cavity scan data that meet the aforementioned judgment conditions within the impression model.

[0020] Furthermore, in the above impression pattern conversion step, when it is determined through the above oral scan data storage step that the boundary line in the above oral scan data is not clearly displayed, impression material can be used to display the boundary line in the above impression scan data. The boundary line can be applied to the above oral scan data and displayed when the above final scan data is obtained.

[0021] Furthermore, the oral cavity scan data storage step may include a post area scanning step. In the post area scanning step, when the selected area is determined to be a post area by scanning the oral cavity object, the post area is converted into an impression pattern and replaced with the impression scan data that is pre-stored.

[0022] Furthermore, the above-mentioned post area scanning step may include: a display step, displaying the above-mentioned post area; an impression mode conversion step, selectively acquiring oral cavity scanning data for the above-mentioned post area and converting it into the above-mentioned impression mode to acquire impression scanning data; and a positive scan data application step, acquiring positive scan data for the above-mentioned post area through the above-mentioned impression mode conversion, and partially replacing the above-mentioned positive scan data with the above-mentioned impression scanning data.

[0023] On the other hand, a composite scanning method for oral cavity and impression in another embodiment of the present invention may include: an oral cavity scanning data acquisition step, acquiring oral cavity scanning data of an oral cavity object including a post region using a scanner; an impression mode conversion step, converting the data into an impression mode to invert the oral cavity scanning data; a region selection and designation step, designating the post region as the impression scanning object region; an impression scanning data acquisition step, acquiring impression scanning data for the selected region designated as the impression scanning object region; and a data alignment step, aligning the oral cavity scanning data and the impression scanning data acquired for the selected region.

[0024] Furthermore, the aforementioned impression scanning data can be obtained by scanning the impression model, which serves as the oral cavity model frame, with a scanner.

[0025] Furthermore, in the above-mentioned imprint scanning data acquisition step, the above-mentioned pile area can be obtained by engraving.

[0026] Furthermore, it may include a re-inversion step, in which the oral cavity scan data and the impression scan data aligned according to the data alignment step are re-inverted as the impression pattern is released.

[0027] Furthermore, the present invention may include a final data acquisition step, in which, according to the re-inversion step, in the selected area, the oral cavity scan data is replaced by the impression scan data, and the final scan data is obtained by combining the oral cavity scan data and the impression scan data.

[0028] On the other hand, another embodiment of the present invention provides a composite scanning method for the oral cavity and impressions, which may include: a first oral cavity scan data storage step, storing first oral cavity scan data by scanning the outer surface of an oral cavity object including a maxillary model and a mandibular model; a second oral cavity scan data storage step, storing second oral cavity scan data by scanning the interior of the oral cavity object while the maxillary model and the mandibular model are separated; a selected area impression scan data comparison step, acquiring impression scan data for a selected area of ​​the oral cavity object and comparing it with the first oral cavity scan data and the second oral cavity scan data, wherein the oral cavity object includes the occlusal state of the maxillary model and the mandibular model; and a selected area impression scan data replacement application step, partially replacing the impression scan data with the first oral cavity scan data and the second oral cavity scan data.

[0029] Furthermore, in the aforementioned first oral cavity scan data storage step, the maxillary model and the mandibular model can face each other so as to bite each other.

[0030] Technical effect

[0031] The present invention has the following effects: after acquiring oral scan data using an oral scanner, the impression scan data is aligned with the oral scan data during the acquisition of impression scan data to finally obtain a merged digital data, thereby enabling the manufacture of exquisite prostheses using the acquired digital data.

[0032] Furthermore, the present invention has the following advantages: when the boundary line in the oral cavity is difficult to measure due to being obscured by the gingival tissue, the boundary line can be expressed during the impression acquisition process, thereby obtaining more accurate digital data.

[0033] On the other hand, the present invention has the following effects: by acquiring the impression scanning data, the actual pile area formed by the intaglio method is acquired by the relief method, so it is also possible to scan the parts that cannot be scanned, and it can solve the existing problem that the pile area is formed by the intaglio method, which makes it difficult or impossible to acquire data by the oral scanner.

[0034] Moreover, the present invention has the following effect: by separately obtaining an impression of the tooth portion covered with a metal crown, and applying the scanning data of this impression to the occlusal alignment required to obtain the final scanning data, it is possible to scan tooth portions that are difficult to scan accurately due to the material characteristics. Attached Figure Description

[0035] Figure 1 A diagram is provided to briefly illustrate the combined scanning system for the oral cavity and impression of the present invention.

[0036] Figure 2 The flowchart illustrates the composite scanning method of the oral cavity and impression impression according to the first embodiment of the present invention.

[0037] Figure 3 The diagram illustrates the acquisition of oral cavity scanning data and impression scanning data in the composite scanning method of the oral cavity and impression of the first embodiment of the present invention.

[0038] Figure 4 This diagram illustrates the conversion of the oral cavity and impression into an impression pattern in the composite scanning method of the first embodiment of the present invention.

[0039] Figure 5 This diagram illustrates the selected region in the composite scanning method of the oral cavity and impression impression according to the first embodiment of the present invention.

[0040] Figure 6 This diagram illustrates a selected area in the composite scanning method of the oral cavity and impression of the first embodiment of the present invention, in which oral cavity scanning data is replaced with impression scanning data.

[0041] Figure 7 This is a diagram illustrating the final scan data of the combined scanning method for the oral cavity and impression impression according to the first embodiment of the present invention.

[0042] Figure 8 A diagram showing the boundary lines of the combined scanning method of the oral cavity and impression impression according to the second embodiment of the present invention.

[0043] Figure 9 This diagram illustrates the replacement of the applicable boundary line in the composite scanning method of the oral cavity and impression impression according to the second embodiment of the present invention.

[0044] Figure 10 A diagram illustrating the post region in the combined scanning method of the oral cavity and impression impression according to the third embodiment of the present invention.

[0045] Figure 11 This diagram illustrates the display state of the selected area for the post region in the composite scanning method of the oral cavity and impression according to the third embodiment of the present invention.

[0046] Figure 12This is a diagram illustrating the positive scan data of the applicable post area in the composite scanning method of the oral cavity and impression impression according to the third embodiment of the present invention.

[0047] Figure 13 The diagram shows the composite scanning method of the oral cavity and impression according to the fourth embodiment of the present invention.

[0048] Figure 14 A diagram illustrating the post region in the composite scanning method of the oral cavity and impression according to the fourth embodiment of the present invention.

[0049] Figure 15 This diagram illustrates the display state of the selected area for the post region in the composite scanning method of the oral cavity and impression according to the fourth embodiment of the present invention.

[0050] Figure 16 This is a diagram illustrating the positive scan data of the applicable post area in the composite scanning method of the oral cavity and impression according to the fourth embodiment of the present invention.

[0051] Figure 17 A diagram illustrating the final scan data obtained by the combined scanning method of the oral cavity and impression according to the fourth embodiment of the present invention.

[0052] Figure 18 The diagram shows the composite scanning method of the oral cavity and impression according to the fifth embodiment of the present invention.

[0053] Figure 19 This diagram illustrates the state of the maxilla and mandible facing each other in the combined scanning method of the oral cavity and impression according to the fifth embodiment of the present invention.

[0054] Figure 20 This diagram illustrates the coverage state of the impression material in the composite scanning method for the oral cavity and impression according to the fifth embodiment of the present invention.

[0055] [Explanation of reference numerals in the attached figures]

[0056] 1: Maxilla 2: Mandible

[0057] 3: Imprint

[0058] 10': Inversion data of oral cavity scan data

[0059] 12: Scanning area 20: Imprint scanning data

[0060] 20': Inversion data of impression scanning data 22: Scanned image

[0061] 30: Final scan data 42: Imprint mode conversion button

[0062] 44: Region Selection Button

[0063] 100: Oral scanner; 200: Storage unit

[0064] 300: Judgment Unit; 400: Control Unit

[0065] 410: Simulation Department

[0066] A: Select region M: Boundary line

[0067] P: Pile area

[0068] Preferred Implementation

[0069] Hereinafter, some embodiments of the present invention will be described in detail with reference to the exemplary accompanying drawings. It should be noted that, in assigning reference numerals to the structural elements of the various drawings, the same reference numerals are used as much as possible for the same structural elements, even when shown in different drawings. Furthermore, in describing the present invention, detailed descriptions of related well-known structures or functions will be omitted when it is determined that such detailed descriptions may obscure the spirit of the present invention.

[0070] In describing the structural elements of embodiments of the present invention, terms such as first, second, A, B, (a), and (b) may be used. These terms are merely used to distinguish their structural elements from other structural elements, and are not limited to the nature, order, or sequence of the corresponding structural elements. Furthermore, unless otherwise defined, all terms, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. Commonly used terms, such as those defined in dictionaries, should be interpreted as having meanings consistent with their meanings in the context of the relevant art, and should not be interpreted in an ideal or overly formal sense unless explicitly defined in this invention.

[0071] Figure 1 A diagram is provided to briefly illustrate the combined scanning system for the oral cavity and impression of the present invention. (Refer to...) Figure 1 The composite scanning system for oral cavity and impression of the present invention includes an oral scanner 100, a storage unit 200, a judgment unit 300 and a control unit 400.

[0072] First, the oral scanner 100 can be either a desktop model scanner or a handheld 3D scanner used to photograph an oral object (in this invention, the oral object can be an oral model obtained by pouring plaster into a molding frame, or it can be the inside of an actual patient's mouth). The oral scanner 100 can include a photographing unit for photographing actions. The storage unit 200 stores oral scan data acquired from the oral scanner 100 and selectively stores impression scan data of the oral object according to preset judgment conditions. That is, when oral scan data is stored in the storage unit 200, and the judgment unit 300 determines that the stored scan data meets the preset judgment conditions, the impression scan data of the oral object is stored together. In other words, the judgment unit 300 determines whether the oral scan data meets the preset judgment conditions, and can guide the storage unit 200 to selectively store impression scan data according to the judgment result of the judgment unit 300.

[0073] On the other hand, the judgment conditions include at least one of the following: the boundary lines in the oral cavity scan data are not clearly displayed due to obstruction by the gums, etc.; or a post area P exists; or an area including metal components exists, and these parts are set as selection areas. More specifically, since the surface of the oral cavity object is scanned by the oral cavity scan data, when there are boundary lines that are difficult to measure due to obstruction by gum tissue, or post areas formed by engravings, or metal areas filled with amalgam or resin in the oral cavity environment, accurate scan data for these parts cannot be guaranteed. Therefore, when the judgment unit 300 determines that at least one of these judgment conditions is included, the oral cavity scanner 100 scans the impression scan data of the oral cavity object including the selection area and selectively stores it in the storage unit 200.

[0074] Furthermore, if the oral cavity scan data meets at least one of multiple judgment conditions, the control unit 400 performs control so that the judgment unit determines that the final scan data for the oral cavity object cannot be accurately guaranteed due to the presence of boundary lines, post areas, metal areas, etc., and applies the selected area portion of the impression scan data that meets the judgment conditions to the oral cavity scan data. In this case, applying the impression scan data portion to the oral cavity scan data may mean performing a merging process such as supplementing or replacing the data values ​​of the oral cavity scan data formed in the selected area with the data values ​​of the impression scan data. Preferably, applying the impression scan data portion to the oral cavity scan data may mean replacing the oral cavity scan data with the impression scan data in the selected area.

[0075] Therefore, under the control of the control unit 400, in addition to oral scan data, impression scan data is selectively and independently acquired and stored in the storage unit 200, and divided into the parts that need to be stored in the oral scan data and the parts that need to be replaced by the impression scan data. That is, the selected areas are partially aligned and merged. Thus, when the scan data is acquired by the oral scanner 100, the parts that cannot be clearly expressed by the oral scan data alone can be selectively expressed at the same level as the actual situation. Ultimately, it can effectively ensure that it can be applied to the design work of oral objects.

[0076] On the other hand, the control unit 400 can be connected to the simulation unit 410 and share information. This simulation unit 410 not only receives the selected area contained in the impression scan data from the storage unit 200, but also receives information about the areas adjacent to the selected area, i.e., the areas before and after the selected area. Therefore, it can automatically perform simulation before replacing the oral scan data of the selected area. Thus, the simulation unit 410 can prevent the problem of being replaced with an incorrect area during the automatic replacement of the selected area with the corresponding area of ​​the oral scan data, resulting in the accurate replacement of the selected area with the corresponding area.

[0077] Figure 2 The flowchart illustrates the combined scanning method of the oral cavity and impression impression according to the first embodiment of the present invention. Figure 3 The diagram illustrates the acquisition of oral cavity scanning data and impression scanning data in the composite scanning method of the oral cavity and impression of the first embodiment of the present invention. Figure 4 This diagram illustrates the conversion to an impression pattern in the combined scanning method of the oral cavity and impression impression according to the first embodiment of the present invention. Furthermore, Figure 5 This is a diagram illustrating the selected region in the composite scanning method of the oral cavity and impression impression according to the first embodiment of the present invention. Figure 6 This is a diagram illustrating the replacement of oral cavity scan data with impression scan data in a selected area of ​​the composite scanning method for oral cavity and impression in the first embodiment of the present invention. Figure 7 This is a diagram illustrating the final scan data of the combined scanning method for the oral cavity and impression impression according to the first embodiment of the present invention.

[0078] like Figure 2 As shown, the combined scanning method of the oral cavity and impression in this embodiment will be described in sequence below.

[0079] First, such as Figure 3As shown, an oral cavity object is scanned using an oral scanner 100, and the corresponding oral cavity scan data 10 is stored in the storage unit 200 (step S100). In this case, the oral cavity scan data 10 is checked, and the determination unit 300 determines whether there is an area that meets the preset determination conditions (step S200), and selectively stores the impression scan data 20 of the oral cavity object (step S210). That is, when the stored oral cavity scan data 10 is checked while storing the oral cavity scan data 10 in the storage unit 200, if it is determined that there is an area that meets the preset determination conditions (step S200), the impression scan data 20 of the oral cavity object is selectively stored (step S210). On the other hand, as described above, the oral cavity object can be an oral cavity model obtained by pouring plaster into the impression frame. Alternatively, the oral cavity object can be the inside of the actual patient's oral cavity.

[0080] On the other hand, the judgment conditions include at least one of the following: the boundary line in the oral scan data 10 is obscured (the boundary line is not clearly displayed); or a post area exists; or a metal-containing area exists, and these parts are set as selected areas. If it is determined that no area meeting the judgment conditions does not exist when reviewing the oral scan data 10, the oral scan data 10 is taken as the final scan data 30, and the process ends (step S300).

[0081] On the other hand, when the impression scan data 20 of the oral cavity object is stored (step S210), it is determined that there is a region in the oral cavity scan data 10 that meets the determination condition, and the oral cavity scan data 10 is converted into an impression pattern to correspond to the impression scan data 20 selectively stored as described above (step S220). That is, in order to convert the impression scan data 20 into an impression pattern as described above, the impression scan data 20 is stored in a manner as described above. Figure 3 The oral cavity scan data 10 shown is converted into scan data corresponding to the impression scan data 20, such as... Figure 4 As shown, by changing the normal of the oral cavity scan data 10, it becomes a negative model, thereby expressing it as the inversion data 10' of the oral cavity scan data, and the oral cavity scan data 10 can be compared and merged with the impression scan data 20 one by one.

[0082] Then, as Figure 5As shown, in the converted impression scan data 20, scan data for selected region A is partially acquired and used to replace the oral scan data 10 that has been converted into an impression pattern (step S230). In this case, the scan data information used to replace the applicable selected region A is received along with the scan data information adjacent to that region, i.e., the scan data information of the regions before and after selected region A. Therefore, before replacing the oral scan data 10 for selected region A, simulation can be automatically performed to replace the appropriate region. Here, selected region A corresponds to the boundary line M in the oral cavity environment that is difficult to measure due to being obscured by gingival tissue; or the post region P formed by an engraved portion; or the metal region filled with amalgam or resin. Accurate scan data for these parts cannot be guaranteed, and therefore need to be replaced by the corresponding region information in the impression scan data 20.

[0083] Ultimately, as Figure 6 As shown, the oral cavity scan data 10, which is converted into the replacement application in selected area A, i.e., the state of the replacement application in selected area A is completed, is reconverted into the oral cavity pattern as the initial pattern (step S240) to obtain the following: Figure 7 The final scan data 30 shown is obtained, and the process ends (step S300). Therefore, in this embodiment, after acquiring the oral cavity scan data 10, during the acquisition of the impression scan data 20, the selected area A is continuously converted into an impression mode and an oral cavity mode, and the process of aligning the impression scan data 20 with the oral cavity scan data 10 is performed in real time, thereby obtaining a final scan data 30 that combines the oral cavity scan data 10 and the impression scan data 20. More specifically, if it is necessary to supplement the selected area A in the oral cavity scan data 10, the oral cavity scan data 10 can be formed into inversion data 10' of the oral cavity scan data through the impression mode, and the impression scan data 20 is applied to the selected area A to replace a portion of the inversion data 10' of the oral cavity scan data, and then it is converted back into the oral cavity mode to obtain a merged final scan data 30.

[0084] Therefore, in this embodiment, oral scan data 10 and impression scan data 20 are acquired independently and divided into parts that need to be stored in oral scan data 10 and parts that need to be replaced by impression scan data 20. That is, region A is selected to partially align and merge them. Thus, when the scan data is acquired by the oral scanner, the impression scan data 20 can selectively supplement the parts that cannot be clearly expressed by oral scan data 10 alone, so that they can be expressed at the same level as the actual oral object. In the end, accurate final scan data 30 that can be applied to the design work of oral objects can be effectively ensured.

[0085] The final scan data 30, ensured in the manner described above, can be exported as a file in a universal format without additional work. This final scan data 30 can be transferred to the design program to manufacture a prosthesis of the same level as the actual oral object (step S400).

[0086] the following, Figure 8 To illustrate the diagram showing the boundary lines displayed by the combined scanning method of the oral cavity and impression impression according to the second embodiment of the present invention, Figure 9 This diagram illustrates the replacement of the applicable boundary line in the composite scanning method of the oral cavity and impression impression according to the second embodiment of the present invention.

[0087] like Figure 8 As shown, in the impression pattern conversion step (step S220), when the result of scanning the oral cavity using an oral scanner indicates that the boundary line M corresponding to the boundary between the gingiva and teeth in the oral scan data 10 is obscured and unclear data is obtained, the boundary line M can be expressed by scanning while the impression material is inserted between the gingiva and teeth, allowing the impression scan data 20 to be obtained. That is, the boundary line M is difficult to obtain using an oral scanner, but can be obtained using the impression material inserted between the gingiva and teeth, such as... Figure 9 As shown, the boundary line M obtained in the manner described above, more specifically the boundary line M displayed in the impression scan data 20, is applicable to the oral scan data 10 and can be displayed when the final scan data 30 is obtained through the final scan data acquisition step (step S300).

[0088] Therefore, in this embodiment, the impression material is used to make the boundary line M, which is difficult to measure due to being obscured by gingival tissue in the oral cavity, applicable to the oral scan data 10 and displayed in the final scan data 30, thereby enabling the transmission of data with richer and clearer information to the design program to manufacture a high-precision prosthesis.

[0089] the following, Figure 10 To illustrate the post region in the composite scanning method of the oral cavity and impression of the third embodiment of the present invention, Figure 11 This diagram illustrates the display state of the selected area for the post region in the composite scanning method of the oral cavity and impression according to the third embodiment of the present invention. Figure 12 This is a diagram illustrating the positive scan data of the applicable post area in the composite scanning method of the oral cavity and impression impression according to the third embodiment of the present invention.

[0090] like Figure 10 As shown, when the result of scanning an oral cavity object is determined to include a post region P, the post region P can be converted into an impression pattern to replace the pre-stored impression scanning data.

[0091] The post area scanning steps described above can be performed in the order described later. Generally, during post treatment, because the post area P is formed by intaglio and is relatively deep, it is difficult to acquire scanning data using an oral scanner. Therefore, the post area P of the oral object is displayed first. That is, the post area P displayed as described above is shown as follows due to its depth. Figure 10 In order to obtain scan data for this post region P, as shown in the perforation state, after selectively acquiring and displaying oral cavity scan data 10 for the post region P, as... Figure 11 As shown, impression scan data 20 can be obtained by converting an oral object, including the post region P, into an impression pattern. In this case, after the step of storing the oral scan data 10, a step is performed to determine whether impression scan data that meets preset judgment conditions exists, such as whether the post region P exists. This can be achieved by selectively scanning only the portion corresponding to the portion of the oral scan data that meets the judgment conditions to store the impression scan data.

[0092] As a result, impression scan data 20 for the pile region P can be obtained by converting it to impression mode, such as... Figure 12 As shown, when a post region P exists, by partially replacing the impression scan data 20 with the positive scan data, the post region P can also be reflected in the final scan data 30 when it is converted back into the oral cavity mode through the final scan data acquisition step (step S300).

[0093] Figure 13 The figures illustrate the combined scanning method of the oral cavity and impression impression according to the fourth embodiment of the present invention. Figure 14 A diagram illustrating the post region P in the combined scanning method of the oral cavity and impression according to the fourth embodiment of the present invention. Figure 15 This diagram illustrates the display state of the selected area A for the post region P in the composite scanning method of the oral cavity and impression according to the fourth embodiment of the present invention. Furthermore, Figure 16 This is a diagram illustrating the positive scanning data of the applicable post area P in the composite scanning method of the oral cavity and impression according to the fourth embodiment of the present invention. Figure 17 A diagram illustrating the final scan data obtained by the combined scanning method of the oral cavity and impression according to the fourth embodiment of the present invention.

[0094] First, such as Figure 13 As shown, in the composite scanning method of the oral cavity and impression of the fourth embodiment of the present invention, an oral scanning data acquisition step (step S102) is performed to acquire oral scanning data 10 by scanning the oral cavity object with a scanner. In this case, the oral cavity object includes a post and core working area (hereinafter referred to as post area P) for crown or implant work. More specifically, the oral cavity object has the post area P as part of the object. Figure 14 As shown, oral scan data 10 and the incompletely scanned post area P can be confirmed.

[0095] To supplement the data by acquiring additional information about the pile region P, an impression mode can be used to supplement the data for the pile region P. That is, this means supplementing the data with data in the form of an impression of the newly acquired inversion data by converting the data displayed in oral cavity mode into an impression mode (step S202). Figure 15 As shown, by clicking the impression mode conversion button 42, the acquired oral cavity scan data 10 can be displayed as inverted oral cavity scan data 10'. Next, the incompletely scanned post region P can be designated as selection region A (step S302). Designating selection region A can be achieved by clicking the region selection button 44 formed adjacent to the impression mode conversion button 42, and the inverted oral cavity scan data 10' can include the post region P. Selection region A is shaded, and the impression scan data 20 corresponding to this portion can be obtained.

[0096] When a selection area A is specified, impression scan data 20 corresponding to the selection area A can be obtained by further scanning with a scanner (step S402). Alternatively, impression scan data 20 is obtained by scanning an impression model that serves as a dental model frame with a scanner. When scanning the impression model, the current scanning status is displayed on the scanning screen 22, and the corresponding data acquisition process is displayed in the scanning area 12. The post area P obtained with the impression scan data 20 actually has an intaglio, but since the dental scan data 10 is inverted in the impression mode, the post area P can also be obtained as a relief. The impression scan data 20 obtained in the manner described above is aligned with the portion corresponding to the selection area A in the inverted data 10' of the dental scan data (step S502). By aligning the impression scan data 20, the impression scan data 20 can supplement the insufficient scanning portions of the dental scan data 10. Furthermore, the dental scan data 10 including the post area P of the selection area A can be replaced and applied with the relatively accurate impression scan data 20.

[0097] like Figure 17As shown, after data alignment (step S502), the impression mode can be deactivated by clicking the impression mode conversion button 42. That is, the scanning mode can be returned from the impression mode to the oral cavity mode, and the data is re-inverted based on the deactivation of the impression mode (step S602). More specifically, the inverted data 10' of the oral cavity scan data is re-displayed as the oral cavity scan data 10, and the impression scan data 20 is displayed as the inverted data 20' of the impression scan data. On the other hand, since the impression scan data 20 is a negative model, the inverted data 20' of the impression scan data can be used to obtain the final scan data 30. Furthermore, the impression scan data 20 and the inverted data 20' of the impression scan data can have opposing normals.

[0098] like Figure 17 As shown, the data values ​​of the selected region A in the oral cavity scan data 10 can be changed by the impression scan data 20. For example, the transformation of data values ​​may mean transforming, merging, or supplementing the existing data values ​​in the selected region A with the data values ​​of the impression scan data 20. Preferably, the inversion data 10' corresponding to the selected region (especially the region including the post region) can be replaced by the impression scan data obtained by performing an impression scan. Furthermore, by combining the oral cavity scan data 10 and the impression scan data 20 to obtain a final scan data 30 (step S702), the combined scan data has high reliability, thereby enabling the manufacture of precise prostheses.

[0099] On the other hand, by acquiring the impression scan data 20 only for the selected area A corresponding to the pile area P, unnecessary data accumulation can be prevented, and highly reliable final scan data 30 can be obtained.

[0100] the following, Figure 18 The figures illustrate the combined scanning method of the oral cavity and impression impression according to the fifth embodiment of the present invention. Figure 19 This diagram illustrates the facing position of the maxilla and mandible in the combined scanning method of the oral cavity and impression impression according to the fifth embodiment of the present invention. Figure 20 This diagram illustrates the coverage state of the impression material in the composite scanning method for the oral cavity and impression according to the fifth embodiment of the present invention.

[0101] Generally, when scanning the occlusal state of objects in the oral cavity, direct intraoral scanning may lead to accuracy issues. Therefore, combining oral cavity scan data and impression scan data can ensure accurate occlusal data. For this reason, such as... Figure 18 As shown, the method for ensuring accurate scan data for occlusal states is explained below.

[0102] First, such as Figure 18 and Figure 19As shown, with the maxilla 1 and mandible 2 of the oral cavity facing each other in an occlusal manner, the external surface of the oral cavity is scanned and the first oral cavity scan data is stored (step S104). Furthermore, with the maxilla 1 and mandible 2 facing each other and open, the interior of the oral cavity is scanned and the second oral cavity scan data is stored (step S204).

[0103] Then, impression scan data of a selected area of ​​an oral object, including the occlusal state of the maxilla 1 and mandible 2, is acquired and compared with the first and second oral scan data (step S304). That is, as... Figure 19 and Figure 20 As shown, when the impression material 3 is placed over the molars on both sides of the oral cavity to make the maxilla 1 and mandible 2 face each other, the upper and lower parts of the impression material 3 not only show the alignment of the maxilla 1 and mandible 2 respectively, but also show their positional differences, that is, the occlusal state of the maxilla 1 and mandible 2. Therefore, by scanning the information of the impression material 3 and comparing its scan data with the pre-stored first oral cavity scan data and second oral cavity scan data, the accurate occlusal state of the oral cavity object can be determined.

[0104] Finally, in the first and second oral cavity scan data, by partially replacing the corresponding positions—for example, the impression scan data corresponding to the bilateral molars (step S404)—final scan data containing accurate occlusal information of the oral cavity object is obtained. This is because, since the impression scan data obtained by the impression material is more accurate than the scan data obtained by scanning the inside and outside of the oral cavity object using an oral scanner, accurate occlusal information is obtained by partially replacing the impression scan data applicable to the first and second oral cavity scan data.

[0105] The present invention has the following effects: after acquiring oral scan data using an oral scanner, the impression scan data is aligned with the oral scan data during the acquisition of impression scan data to finally obtain a merged digital data, thereby enabling the manufacture of exquisite prostheses using the acquired digital data.

[0106] Furthermore, when the boundary lines in the oral cavity are difficult to measure due to being obscured by gingival tissue, the boundary lines can be expressed during the impression taking process, thereby obtaining more accurate digital data.

[0107] On the other hand, the present invention has the following effects: by acquiring the impression scanning data, the actual pile area formed by the intaglio method is acquired by the relief method, so it is also possible to scan the parts that cannot be scanned, and it can solve the existing problem that the pile area is formed by the intaglio method, which makes it difficult or impossible to acquire data by the oral scanner.

[0108] Moreover, the present invention has the following effect: by separately obtaining an impression of the tooth portion covered with a metal crown, and applying the scanning data of this impression to the occlusal alignment required to obtain the final scanning data, it is possible to scan tooth portions that are difficult to scan accurately due to the material characteristics.

[0109] The above description is merely an illustrative description of the technical concept of this embodiment. Anyone skilled in the art to which this embodiment pertains can make various modifications and variations without departing from the essential characteristics of this embodiment.

[0110] Therefore, this embodiment is not intended to limit the technical concept of this embodiment, but is used to illustrate this embodiment. The scope of the technical concept of this embodiment is not limited to these embodiments. The protection scope of this embodiment should be interpreted by the following invention claims, and all technical concepts within the equivalent scope should be interpreted as being included within the scope of the claims of this embodiment.

[0111] Industrial availability

[0112] The present invention provides a composite scanning system and method for oral cavity and impression: after acquiring oral cavity scanning data using an oral scanner, the impression scanning data is aligned with the oral cavity scanning data during the acquisition of impression scanning data to finally obtain a merged digital data.

Claims

1. A composite scanning system for oral cavity and impression, It is characterized in that include: Oral scanner, used to scan oral objects; a storage unit for storing oral scan data expressing an oral model or an oral object inside the oral cavity of a patient acquired from the oral scanner, and selectively storing impression scan data of the oral object expressing an impression model as a frame of the oral model according to a preset judgment condition for the oral object; A judging unit, used to judge whether the oral scan data meets the judging conditions, and guide the selective storage of the impression scan data; as well as The control unit is used to control the selected area part of the above-mentioned impression scanning data that meets the judgment condition to be applied to the corresponding area of ​​the above-mentioned oral scanning data to obtain the final scanning data.

2. The combined scanning system of oral cavity and impression according to claim 1, It is characterized in that The judgment condition includes at least one of the following conditions: the boundary line in the oral scan data is not clearly displayed; or there is a pile area; or there is a metal-containing area.

3. The combined scanning system of oral cavity and impression according to claim 1, It is characterized in that The control unit includes a simulation unit configured to receive information of a region adjacent to the selected region from the storage unit and automatically perform a simulation before replacing the selected region using the information.

4. A composite scanning method of oral cavity and impression, It is characterized in that include: An oral scan data storage step of storing oral scan data by scanning an oral object representing an oral model or an oral cavity of a patient; an impression mode conversion step, converting the oral cavity scan data into an impression mode by detecting the oral cavity scan data to correspond to the selectively stored impression scan data expressing the impression model as a frame of the oral cavity model; A selected area replacement application step, partially obtaining scan data of the selected area in the above-mentioned impression scan data, and applying the above-mentioned impression scan data to the above-mentioned oral scan data converted into the above-mentioned impression mode; and The final scan data acquisition step is to reconvert the oral scan data applied with the impression scan data in the selected area into an oral mode as an initial mode to acquire the final scan data.

5. The combined scanning method of the oral cavity and the impression according to claim 4, It is characterized in that After the oral scan data storage step, the method further includes a step of determining whether the impression scan data is stored. In the step of determining whether the impression scan data is stored, the impression scan data is selectively stored according to whether the oral scan data contains a preset determination condition.

6. The combined scanning method of the oral cavity and the impression according to claim 5, It is characterized in that The impression scan data is data stored by selectively scanning only the portion corresponding to the portion of the oral scan data that meets the above determination condition in the impression model.

7. The combined scanning method of the oral cavity and the impression according to claim 4, It is characterized in that In the impression mode conversion step, when it is determined by the oral scan data storage step that the boundary line in the oral scan data is not clearly displayed, the boundary line is displayed in the impression scan data using an impression material. The boundary line is applied to the oral scan data and is displayed when the final scan data is acquired.

8. The combined scanning method of the oral cavity and the impression according to claim 4, It is characterized in that The oral scan data storage step includes a post area scanning step. In the post area scanning step, when the selected area is determined to be a post area by scanning the oral object, the post area is converted into an impression mode and replaced with the pre-stored impression scan data.

9. The combined scanning method of the oral cavity and the impression according to claim 8, It is characterized in that The above pile area scanning steps include: Displaying step, displaying the pile area; an impression mode conversion step of selectively acquiring oral scan data for the post area and converting the data into the impression mode to acquire impression scan data; and The positive engraving scan data application step is to obtain the positive engraving scan data for the above-mentioned pile area by converting the above-mentioned mold mode, and partially replace the above-mentioned positive engraving scan data with the above-mentioned mold scan data.

10. A composite scanning method of oral cavity and impression, It is characterized in that include: An oral scan data acquisition step, acquiring oral scan data of an oral object including a post area by a scanner, wherein the oral object represents an oral model or the inside of a patient's oral cavity; An impression mode conversion step, converting into the impression mode so that the oral cavity scan data is inverted to correspond to the impression scan data of the impression model as the frame of the oral cavity model; A region designation step is selected to designate the pile region as a region to be scanned by the impression; an impression scan data acquisition step of acquiring the impression scan data for a selected area designated as the impression scan target area; and The data alignment step is to align the oral scan data with the impression scan data obtained for the selected area.

11. The combined scanning method of the oral cavity and the impression according to claim 10, It is characterized in that In the above-mentioned impression scanning data acquisition step, the above-mentioned pile area is obtained by positive engraving.

12. The combined scanning method of the oral cavity and the impression according to claim 11, It is characterized in that The method further comprises a re-inversion step, in which the oral scan data and the impression scan data aligned in the data alignment step are re-inverted as the impression mode is released.

13. The combined scanning method of the oral cavity and the impression according to claim 12, It is characterized in that The method comprises a final data acquisition step, in which, according to the re-inversion step, in the selected area, the oral scan data is replaced by the impression scan data, and the final scan data is acquired by combining the oral scan data and the impression scan data.

14. A composite scanning method of oral cavity and impression, It is characterized in that include: A first oral cavity scan data storage step of storing first oral cavity scan data by scanning an outer surface of an oral cavity object expressing an oral cavity model including an upper jaw model and a lower jaw model; a second oral scan data storage step of storing second oral scan data by scanning the interior of the oral object in a state where the upper jaw model and the lower jaw model are separated; a selected area impression scan data comparison step, wherein the impression scan data of the selected area of ​​the oral object is obtained by scanning the impression model as a frame of the oral model, and compared with the first oral scan data and the second oral scan data, wherein the oral object includes the occlusal state of the maxillary model and the mandibular model; and The step of replacing and applying the selected area impression scan data is to partially replace the above-mentioned impression scan data and apply it to the above-mentioned first oral cavity scan data and the above-mentioned second oral cavity scan data.

15. The combined scanning method of the oral cavity and the impression according to claim 14, It is characterized in that In the first oral scan data storage step, the upper jaw model and the lower jaw model face each other so as to occlude each other.

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