JP2014050573A - Dental prosthesis manufacturing support device and method for manufacturing dental prosthesis - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a dental prosthesis manufacturing support device and a method for manufacturing a dental prosthesis, allowing easy comparison between a sample and the dental prosthesis, and allowing manufacturing of the dental prosthesis having an optimum color tone without sufficiently acquiring a change of a color tone by an appliance even if interposing the appliance so as to provide information of a state inside an oral cavity of a patient to a dental technician from a dentist .SOLUTION: A dental prosthesis manufacturing support device includes: a photographing device occasionally photographing a state of a manufacturing process of a dental prosthesis manufactured based on sample image data created by photographing the inside of an oral cavity of a patient; and a monitor showing an image of the dental prosthesis stored in manufacturing image data created by the photographing device such that the image can be compared with an image of tooth stored in the sample image data. Thereby, when manufacturing the dental prosthesis, every comparison target becomes a planar image and is easily compared.

Description

  The present invention relates to a dental prosthesis production support device and a dental prosthesis production method.

  As is well known, when a dental technician manufactures a dental prosthesis, conventionally, a sample photograph of a patient's mouth taken by a dentist with a shade guide (dental color sample) is received by a camera and the sample photograph is taken. However, in recent years when photographs have been converted to electronic data, dentists have received sample image data in the patient's mouth taken with a shade guide by a digital camera via the Internet. In general, the sample image data is produced by displaying it on a monitor, and various support devices have been developed for producing a dental prosthesis with reference to such sample image data.

  For example, Patent Document 1 listed below provides a dental prosthesis manufacturing support that is connected via a network to a dentist computer that operates a browser that displays patient image data obtained by imaging the state of a tooth that requires a dental prosthesis. A storage unit for storing the patient image data transmitted from the dentist computer; and an operation screen including the patient image data is displayed on the browser, and is superimposed on the patient image data by the operation screen. As the dental prosthesis image data, the browser is operated so as to generate, as dental prosthesis image data, the inputted tooth pattern imitating the dental prosthesis and the character information regarding the color tone of the dental prosthesis. A dental prosthesis production support device comprising a browser control unit that receives the generated patient image data and registers it in the storage unit It has been disclosed.

  According to the dental prosthesis production support device disclosed in Patent Document 1, while displaying images of the same sample image data on a monitor owned by a dentist and a dental technician via a network, the patient Since the opinions can be exchanged, the communication between the dentist and the dental technician can be facilitated.

JP 2007-209473 A

  By the way, a dental technician who exchanged opinions with a dentist using the dental prosthesis production support device disclosed in Patent Document 1 is a sample image containing character information about the color tone created by the support device. The image based on the data is displayed on the monitor to proceed with the production of the dental prosthesis. At this time, the comparison object is a flat image and a three-dimensional dental prosthesis, so it is very difficult to compare. There was a problem.

  In addition, as described above, the dental technician adjusts the color tone of the dental prosthesis with reference to the image based on the sample image data displayed on the monitor, but the monitor has a unique color tone reproducibility and is displayed on the monitor. The image based on the sample image data reflects the inherent color tone reproducibility of the monitor. Therefore, in order to produce a dental prosthesis with the optimum color tone, the sample image data actually displayed on the monitor once. After comparing the shade guide image stored in the image with the actual shade guide at hand and grasping the change in color tone by the monitor, the color tone of the dental prosthesis was determined based on experience while referring to the sample image data It was necessary to judge.

  Furthermore, the dentist creates sample image data by photographing the inside of the patient's mouth with an imaging device, but the imaging device also has a unique color tone reproducibility, Since the inherent color tone reproducibility of the photographing apparatus is reflected, the dental technician has to manufacture a dental prosthesis in consideration of this point.

  In this way, at the production site of conventional dental prostheses, when devices such as an imaging device and a monitor are interposed to convey the state of the patient's oral cavity from the dentist to the dental technician, each device has a unique color reproduction. The dental technician must make a dental prosthesis with the optimal color after grasping the change in color tone due to these devices, and if the device is replaced with a new one, There is a problem that it is necessary to grasp the change in color tone due to the equipment each time, and furthermore, since the comparison object is a flat image and a three-dimensional dental prosthesis, it is very difficult to compare. there were.

  Therefore, the present inventor makes it easy to compare the sample and the dental prosthesis, and even if an instrument is interposed to convey the state of the patient's oral cavity from the dentist to the dental technician, the instrument depends on the instrument. The technical problem is to provide a dental prosthesis production support device and a dental prosthesis production method capable of producing a dental prosthesis having an optimum color tone without sufficiently grasping the change in color tone. As a result of trial and error trials and experiments, the dental prosthesis manufactured based on the sample image data created by photographing the patient's oral cavity in the dental prosthesis production support device A photographing device for photographing the state of the production process as needed, and a monitor for projecting the dental prosthesis image stored in the production image data created by the photographing device so that it can be compared with the tooth image stored in the sample image data. When As a result, when producing a dental prosthesis, both of the comparison objects are flat images for easy comparison, and both image data are created by an imaging device having the same color tone reproducibility. By displaying the image data on a monitor with the same color tone reproducibility, the dental technician will see both image data whose color tone has been adjusted (corrected) under the same conditions, so it looks over the monitor screen. By matching the color tone of the images based on both image data, it is possible to produce a dental prosthesis with the optimal color tone without having to fully grasp the change in color tone due to each device. That achieved the objective.

  The technical problem can be solved by the present invention as follows.

  That is, the dental prosthesis production support apparatus according to the present invention is an imaging apparatus that shoots the state of the production process of a dental prosthesis manufactured based on sample image data created by imaging the patient's mouth. And a monitor that projects an image of the dental prosthesis stored in the production image data created by the photographing apparatus so that it can be compared with an image of a tooth stored in the sample image data.

  In the dental prosthesis production support device, the present invention displays sample image data and production image data on a monitor having the same color tone reproducibility.

  Further, according to the present invention, in any one of the dental prosthesis production support devices, the imaging device that created the sample image data and the imaging device that created the production image data have the same color tone reproducibility.

  Furthermore, the method for producing a dental prosthesis according to the present invention includes a dental prosthesis produced based on a tooth image stored in sample image data created by photographing the inside of a patient's mouth and the sample image data. The state of the manufacturing process is displayed on the monitor so that it can be compared with the image of the dental prosthesis stored in the manufacturing image data photographed at any time, and the color tone of the dental prosthesis is adjusted with reference to the monitor screen .

  Further, according to the present invention, in the method for manufacturing a dental prosthesis, the sample image data and the manufactured image data are displayed on a monitor having the same color tone reproducibility.

  Further, according to the present invention, in any one of the above-described methods for manufacturing a dental prosthesis, the imaging device that created the sample image data and the imaging device that created the production image data have the same color tone reproducibility.

  Furthermore, as another embodiment of the present invention, in any one of the dental prosthesis production support devices, the sample image data is photographed so as to contain the tooth in the affected area and the tooth located around the tooth in the affected area. The image of the dental prosthesis contained in the production image data can be compared with the image of the dental prosthesis contained in the production image data. The processed image data replaced with the image of the tooth of the affected part stored in the sample image data is displayed on the monitor.

  Further, in any of the dental prosthesis production support devices, the production image data is designated so that the dental prosthesis image stored in the production image data can be compared with the tooth image stored in the sample image data. Numerical information on the color tone of the portion and the designated portion of the sample image data or / and numerical information on the color difference are displayed on the monitor.

  Furthermore, in another embodiment of the present invention, in any one of the methods for producing a dental prosthesis, the sample image data is photographed so that the affected tooth and the tooth located around the affected tooth are contained. A sample image of a dental prosthesis contained in the production image data so that the image of the dental prosthesis contained in the production image data can be compared with the tooth image contained in the sample image data. The processed image data replaced with the image of the tooth of the affected part stored in the data is displayed on the monitor.

  Further, in any one of the above-described methods for producing a dental prosthesis, the production image data is specified so that the dental prosthesis image stored in the production image data can be compared with the tooth image stored in the sample image data. Numerical information on the color tone of the portion and the designated portion of the sample image data or / and numerical information on the color difference are displayed on the monitor.

  According to the present invention, images of teeth stored in sample image data in a patient's mouth taken by a dentist and the state of the manufacturing process of a dental prosthesis manufactured based on the sample image data are taken as needed. Since the image is displayed on the monitor so that it can be compared with the image of the dental prosthesis stored in the production image data, all of the comparison objects become flat images and are easy to compare. In addition, since the same color tone reproducibility was used as a monitor for displaying both image data and a photographing device for creating both image data, both images to be compared were in a state in which the tone was corrected under the same conditions, If the color tone of the dental prosthesis is adjusted with reference to both images, the optimum color tone for the dental prosthesis can be reproduced. Thereby, when adjusting the color tone of the dental prosthesis, prediction based on the experience of the dental technician is unnecessary, and even the unskilled person can easily adjust the color tone of the dental prosthesis. In addition, the sample image data and the production image data projected on the monitor can be freely enlarged and reduced, and a prosthesis can be easily produced by displaying a large creation site on the monitor.

  Therefore, it can be said that the industrial applicability of the present invention is very high.

It is explanatory drawing which showed the dental prosthesis production assistance apparatus which concerns on Embodiment 1. FIG. It is explanatory drawing which showed the dental prosthesis production assistance apparatus which concerns on Embodiment 2. FIG. FIG. 10 is an explanatory diagram for explaining a first modification of the third embodiment. FIG. 11 is an explanatory diagram for explaining a second modification of the third embodiment. FIG. 10 is an explanatory diagram for explaining a third modification of the third embodiment. FIG. 10 is an explanatory diagram for explaining a fourth modification of the third embodiment.

Embodiments of the present invention will be described below.

  Embodiment 1 FIG.

  As shown in FIG. 1, a dental prosthesis production support device 1 according to the present embodiment includes a personal computer 2 and an imaging device 3 installed on the dentist side, and two units installed on the dental technician side. It consists of personal computers 4 and 5 and a photographing device 6.

  The imaging device 3 installed on the dentist side is positioned symmetrically with the tooth / affected part located in the oral cavity of the patient 7 together with the shade guide, specifically, around the tooth of the affected part and the tooth of the affected part, together with the shade guide. Sample image data is created by photographing teeth and the like, and the sample image data created by the photographing apparatus 3 is stored in a recording medium in the personal computer 2 installed on the dentist side. The personal computer 2 installed on the dentist side is connected to one personal computer 4 installed on the dental technician side via the Internet, and sample image data is transmitted and received between the personal computers 2 and 4 via the Internet. can do.

  The photographing device 6 installed on the dental technician side is for photographing the state of the production process of the dental prosthesis 8 produced by the dental technician as needed to create production image data. The produced production image data is stored in a recording medium in the other personal computer 5 installed on the dental technician side.

  One personal computer 4 on the dental technician side includes a monitor 9 that can display an image based on the sample image data transmitted from the personal computer 2 on the dentist side through the Internet, and the other on the dental technician side. The personal computer 5 includes a monitor 10 capable of projecting an image based on the production image data created by the photographing device 6, and both monitors 9, 10 display images projected on the respective monitors 9, 10. It is attached for comparison.

  The imaging device 3 installed on the dentist side and the imaging device 6 installed on the dental technician side have the same color tone reproducibility. Note that an imaging device having the same color tone reproducibility is adjusted so that the same color tone is reproduced for the components (hardware) related to the color tone, such as lenses and image sensors, and software that corrects the color tone. For example, it is most preferable to use imaging devices of the same model (same product number manufactured by the same manufacturer). This is because the same color tone reproducibility can be obtained because the same color tone is adjusted to reproduce the same color tone with respect to the components related to the color tone and the software for correcting the color tone if they are of the same model.

  The monitors 9 and 10 installed on the dental technician side are those having the same color tone reproducibility. If the monitor has the same color tone reproducibility, if it is a liquid crystal monitor, adjustments are made to reproduce the same color tone for components related to the color tone such as backlight and filters and software that corrects the color tone. If it is a plasma system monitor or a cathode ray tube system monitor, adjustments have been made to reproduce the same color tone for parts related to color tone such as phosphors and software for correcting the color tone, For example, it is most preferable to use monitors of the same model (same product number manufactured by the same manufacturer). This is because the same color tone reproducibility can be obtained because the same color tone is adjusted to reproduce the same color tone with respect to the components related to the color tone and the software for correcting the color tone if they are of the same model.

  The sample image data and the production image data may be a still image or a moving image.

  Next, a process of manufacturing the dental prosthesis 8 using the dental prosthesis manufacturing support apparatus 1 will be described.

  The dentist creates sample image data by photographing the patient's oral cavity together with the shade guide using the photographing device 3, and stores the sample image data in a recording medium in the personal computer 2. Subsequently, the sample image data stored in the recording medium in the personal computer 2 is transmitted to one personal computer 4 installed on the dental technician side by electronic mail.

  On the other hand, the dental technician matches the display settings (such as contrast and color tone) provided in the two monitors 9 and 10. Subsequently, the sample image data created by photographing the inside of the oral cavity of the patient together with the shade guide transmitted by e-mail from the dentist is received by one personal computer 4, and an image based on the sample image data is received by one personal computer. The image is displayed on a monitor 9 connected to the computer 4.

  Next, when proceeding with the production work of the dental prosthesis, the dental technician photographs the dental prosthesis in the production process state with the photographing device 6 as needed to create production image data, and the production The image data is stored in the recording medium of the other personal computer 5 and an image based on the produced image is displayed on the monitor 10 connected to the other personal computer 5. Then, an image of a tooth stored in the sample image data displayed on the monitor 9 of one personal computer 4 and an image of a dental prosthesis stored in the production image data displayed on the monitor 10 of the other personal computer 5 are displayed. The color tone of the dental prosthesis is adjusted while referring to the above. At this time, the sample image data and the production image data projected on the monitor can be freely enlarged and reduced by software or the like for displaying the image data, so that the created part can be displayed on the monitor.

  The dental prosthesis is manufactured while the dental prosthesis is attached to and detached from a model that reproduces the alignment of the patient's teeth made of a material such as plaster. For this reason, when creating a production image data by photographing a dental prosthesis, it may be photographed with the dental prosthesis fitted in the model, and the dental prosthesis is removed from the model. You may shoot in the state.

Embodiment 2. FIG.

  This embodiment is a modification of the personal computer installed on the dental technician side in the first embodiment. In FIG. 2, the same reference numerals as those in FIG. 1 indicate the same or corresponding parts.

  In this embodiment, there is one personal computer installed on the dental technician side. Therefore, the recording medium of the personal computer 11 installed on the dental technician side contains a sample image created by the dentist receiving from the personal computer 2 installed on the dentist side by photographing the inside of the patient's mouth with the shade guide. The data and the production image data created by photographing the dental prosthesis in the production process by the dental technician are stored together. Then, both image data stored in the recording medium of the personal computer 11 are displayed on the monitor 12 connected to the personal computer 11. At this time, the screen of the monitor 12 is divided into two, and sample image data is displayed on one side. An image of the stored tooth is displayed, and an image of the dental prosthesis stored in the production image data is displayed on the other side.

  In the present embodiment, two image data that a dental technician refers to when producing a dental prosthesis can be displayed on one monitor. Therefore, inevitably, the same tone correction is performed when an image based on the two image data is displayed on the monitor.

Embodiment 3 FIG.

  The present embodiment is a modification of the display method of the sample image data and the production image data on the monitor in the first or second embodiment, and the first to third modifications are modifications of the second embodiment. 4 is a modification of the first embodiment. 3 to 6, the same reference numerals as those in FIG. 1 or 2 indicate the same or corresponding parts.

  Modified Example 1: This modified example is used when a dental prosthesis for making up a tooth of an affected part of a patient is manufactured. In this modified example, when the dentist photographs the inside of the oral cavity of the patient, the sample image data 13 is obtained by photographing so that the tooth of the affected part of the patient and the tooth located around the tooth of the affected part are accommodated together with the shade guide. The dental technician creates the production image data 14 by photographing the dental prosthesis 16 to be produced with reference to the sample image data 13 as needed. The production image data 14 in this modification is created by photographing the dental prosthesis 16 fitted in a model. Then, when the dental technician compares the two image data 13 and 14, as shown in FIG. 3, the image of the tooth 15 of the affected part contained in the sample image data 13 is stored in the production image data 14. The processed image data 17 synthesized so as to be replaced with an image of the prosthesis 16 (a portion indicated by a ray in FIG. 3) is displayed on the monitor 12.

  According to this modification, the state in which the dental prosthesis is actually mounted in the patient's oral cavity can be simulated, so the balance between the color tone around the affected area of the patient and the color tone of the dental prosthesis is balanced. It becomes easy to confirm.

  Modification 2: This modification is also used when a dental prosthesis for supplementing a patient's teeth is manufactured in the same manner as Modification 1. In this modification, the dentist creates sample image data 18 by photographing the mouth of a smiling expression so that the arrangement of the teeth including the teeth of the affected part of the patient can be seen, and the dental technician uses the sample image data. The production image data 14 is created by photographing the dental prosthesis 16 to be produced with reference. The production image data 14 in this modification is created by photographing the dental prosthesis 16 from the model. Then, when the dental technician compares the image data 14 and 18, as shown in FIG. 4, the image of the tooth 19 of the affected part contained in the sample image data 18 is stored in the production image data 14. The processed image data 20 synthesized so as to be replaced with the image of the prosthesis 16 is displayed on the monitor 12.

  According to this modification, the state in which the dental prosthesis is actually mounted in the patient's oral cavity can be simulated, and the color tone around the affected area including the patient's lips (smile line) and the dental prosthesis It becomes easy to confirm the balance with the color of the object.

  Modification 3: This modification is used when a dental prosthesis for supplementing a patient's teeth is manufactured in the same manner as in the first and second embodiments. In this modification, when the dentist photographs the inside of the oral cavity of the patient, the photograph is taken so that the teeth of the affected area of the patient and the teeth located around the teeth of the affected area are accommodated together with the shade guide. The dental technician creates the production image data 14 by photographing the dental prosthesis to be produced as needed with reference to the sample image data 21. The production image data 14 in this modification is created by photographing the dental prosthesis 16 fitted in a model. Then, when the dental technician compares the image data 14 and 21, as shown in FIG. 5, a partial image and a production image of the tooth 23 adjacent to the affected tooth 22 stored in the sample image data 21. Processed image data 24 combined with a part of the image of the dental prosthesis 16 stored in the data 14 so as to form one tooth (in FIG. 5, the left half is stored in the sample image data 21). The image is a part of the tooth 23 adjacent to the affected tooth 22 and the right half of the image is a part of the dental prosthesis 16 stored in the production image data 14.) Is displayed on the monitor 12.

  According to this modification, it becomes easy to compare the difference in color tone between the tooth adjacent to the tooth of the affected part of the patient and the dental prosthesis.

  Modification 4: This modification is used when a dental prosthesis for aesthetic restoration is manufactured. In this modification, when the dentist photographs the inside of the oral cavity of the patient, the dentist performs the esthetic restoration of the patient together with the shade guide (the affected part of the tooth), and the teeth (the affected part of the tooth) that performs the aesthetic restoration The sample image data 21 is created by taking an image so that the tooth that is positioned fits, and the dental technician creates the production image data 14 by photographing the dental prosthesis to be produced with reference to the sample image data. The production image data 14 in this modification is created by photographing the dental prosthesis 16 fitted in a model. Then, when the dental technician compares the two image data 14 and 21, as shown in FIG. 6, a predetermined portion of the sample image data 21 displayed on one monitor 9 is designated, and numerical values relating to the color tone of the predetermined portion. Information 25 can be displayed, and a predetermined portion of the production image data 14 displayed on the other monitor 10 can be designated to display numerical information 26 relating to the color tone of the predetermined portion.

  As the numerical information, as described above, numerical values such as the L * a * b * color system representing the color tone of a predetermined portion of both image data may be displayed. A numerical value such as ΔE (color difference) representing the degree of coincidence may be displayed by comparing the color tones.

  According to this modification, not only the degree of matching of the color tones of both image data can be visually compared but also numerically compared.

  In each of the above embodiments, the sample image data created by the dentist photographing the patient's oral cavity together with the shade guide is transferred from the personal computer installed on the dentist side to the personal technician installed on the dental technician side. Although it is sent to the computer by e-mail, the method of transferring sample image data from the dentist to the dental technician is not limited to this. For example, a CD-R or memory on which the dentist has recorded the sample image data The movable recording medium may be sent to the dental technician, and the dental technician may display the sample image data recorded on the recording medium on the monitor via the personal computer.

  The monitor is not limited to the liquid crystal monitor, plasma monitor, or cathode ray tube monitor exemplified in each of the above embodiments, and other types of monitors may be used.

  Further, the background of the sample image data or the production image data may be edited to black using the function of the image editing software so that the display of the teeth is emphasized. Moreover, it is preferable to perform color tone correction on the dental prosthesis image stored in the production image data so that the color tone of the gingiva is reflected.

  In each of the above embodiments, sample image data is created by an imaging apparatus installed on the dentist side, and production image data is created by an imaging apparatus installed on the dental technician side. You may produce with the same imaging device. In this case, the dentist hands over to the dental technician the imaging device itself in which sample image data created by imaging the patient's mouth is recorded.

  It should be noted that the imaging environment when the dentist images the patient's oral cavity and the imaging environment when the dental technician images the dental prosthesis in the production process must be matched as much as possible. If a single-lens reflex camera is used as an imaging device and the white balance is adjusted so that the white balance in the oral cavity matches the white balance at the work site where the technical product (dental prosthesis) is manufactured, it will be affected by lighting. It becomes difficult to be affected by the shooting environment.

  Further, in each of the above embodiments, a monitor having the same color tone reproducibility is used as a monitor for displaying both image data, and a monitor having the same color tone reproducibility is used as a photographing apparatus for creating both image data. However, the present invention is not limited to this, and any monitor that displays at least both image data may have the same color tone reproducibility. In this case, since the image capturing apparatuses that create both image data do not have the same color tone reproducibility, when creating both image data, it is necessary to adjust the shooting environment and settings of the image capturing apparatus at the time of shooting, By performing color tone correction using correction software, it is necessary to make adjustments so that both image data created by photographing apparatuses having different color tone reproducibility are reproduced in the same color tone. In addition, when the color tone can be adjusted and the color tone reproducibility can be realized by using a device or software capable of adjusting the color of the monitor image, the monitor for displaying both image data may not have the same color tone reproducibility. However, it is preferable to use the same model.

DESCRIPTION OF SYMBOLS 1 Dental prosthesis production support apparatus 2 Personal computer 3 Imaging apparatus 4,5 Personal computer 6 Imaging apparatus 7 Patient 8 Dental prosthesis 9,10 Monitor 11 Personal computer 12 Monitor 13 Sample image data 14 Production image data 15 Sample image data The image of the tooth of the affected part contained in the image 16 The image of the dental prosthesis contained in the production image data 17 The processed image data 18 The sample image data 19 The image of the tooth of the affected part contained in the sample image data 20 The processed image data 21 The sample Image data 22 Tooth image of affected part contained in sample image data 23 Tooth image adjacent to affected part tooth contained in sample image data 24 Processed image data 25 Numerical information 26 Numerical information

Claims (6)

An imaging device that captures the state of the production process of a dental prosthesis manufactured based on sample image data created by photographing the patient's mouth and the production image data created by the imaging device. A dental prosthesis manufacturing support device, comprising: a monitor that displays an image of a dental prosthesis so that the image of a dental prosthesis can be compared with a tooth image stored in sample image data. The dental prosthesis production support device according to claim 1, wherein the sample image data and the production image data are displayed on a monitor having the same color tone reproducibility. The dental prosthesis production support device according to claim 1 or 2, wherein the imaging device that created the sample image data and the imaging device that created the production image data have the same color tone reproducibility. The image of the tooth contained in the sample image data created by photographing the patient's mouth and the state of the production process of the dental prosthesis produced based on the sample image data are contained in the production image data obtained at any time. A method for producing a dental prosthesis comprising projecting the image on a monitor so that the image of the dental prosthesis can be compared and adjusting the color tone of the dental prosthesis with reference to the monitor screen. The method for producing a dental prosthesis according to claim 4, wherein the sample image data and the production image data are displayed on a monitor having the same color tone reproducibility. 6. The method for producing a dental prosthesis according to claim 4, wherein the imaging device that created the sample image data and the imaging device that created the production image data have the same color tone reproducibility.

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