KR102686606B1 - manufacturing method for denture and general bit apparatus for manufacturing of denture - Google Patents

Abstract

In order to improve precision, the present invention provides a first step in which the upper and lower jaws of which the horizontal jaw position is determined are supported at a distance corresponding to the vertical diameter through a spaced support means provided in a general-purpose bite device having a correction groove formed on the inner surface; A second step in which an occlusal scanning image of the outer surface of the upper and lower jaw on which the universal bite device is installed and a surface scanning image of the inner and outer surfaces of the universal bite device on which the correction groove is formed are obtained; A third step in which the surface scanning image is virtually overlapped and registered with the occlusal scanning image, and a replacement image corresponding to the surface information of the upper and lower jaw is calculated from the corrected groove image included in the surface scanning image; and a fourth step in which dentures are finally manufactured.

Description

Manufacturing method for dentures and general bit apparatus for manufacturing dentures {manufacturing method for denture and general bit apparatus for manufacturing of denture}

The present invention relates to a method of manufacturing dentures and a general-purpose biting device for manufacturing dentures, and more specifically, to a method of manufacturing dentures with improved precision and a general-purpose biting device for manufacturing dentures.

In general, dentures refer to artificial periodontal tissue in the oral cavity that artificially restores the appearance and function of missing teeth.

The denture is installed in the oral cavity to restore masticatory function and prevent deformation or damage to the opposing teeth or the remaining teeth and alveolar bone on the side of the arch where the denture is needed. A denture or a small number of implants that can be inserted and removed in the oral cavity An overdenture for fixation after placement may be included in the denture.

Meanwhile, the dentures must be designed to suit each patient, and precise oral information is required to install the dentures manufactured based on the design information in the correct position. For this purpose, internal tissue information such as surface information of the oral cavity and alveolar bone shape/bone density are required. Therefore, an image registration process is needed to acquire scan images and CT images of the patient's upper and lower jaw and align and register them in response to the vertical dimension.

However, if at least one of the upper and lower jaws is completely edentulous or partially edentulous, it is difficult to calculate the patient's accurate vertical dimension. Therefore, in order to align and match the scan image and the CT image corresponding to the vertical diameter, a process of accurately calculating the vertical diameter is performed.

In detail, in the past, an impression of the patient's oral cavity was taken, a plaster model was manufactured from the impression, and the vertical diameter of the plaster model was calculated by adjusting the gap using an articulator. However, this method has a problem in that the process is complicated and the precision is reduced because the vertical diameter is not directly calculated in the patient's mouth.

In addition, since only the vertical occlusal relationship between the upper and lower jaw through the plaster model is considered, there is a problem in that information about the horizontal movement of the temporomandibular joint during the mastication process cannot be considered in the manufacturing process of the denture. As a result, discomfort increases when the final manufactured denture is installed and used in the oral cavity, and unnecessary pressure is applied to the opposing teeth, causing damage to the opposing teeth and temporomandibular joint damage.

Meanwhile, in some cases, a technique has been developed to calculate the centric position and vertical diameter by fixing the needle and the needle plate to a tray made of hard material and then take an impression. In this conventional technology, due to the physical properties of the tray and its thickness, interference occurs between the upper and lower trays on the molar side adjacent to the temporomandibular joint during occlusion of the upper and lower jaw. Because of this, there was a problem that it was difficult to calculate the accurate vertical diameter.

In order to solve this interference problem, some devices are disclosed in which the tray is divided into anterior and posterior teeth, and in this case, the impression is also performed after calculating the centric position and the vertical dimension. That is, the central position and the vertical diameter are calculated by combining the acupuncture needle and the acupuncture plate with the anterior tray. Then, the anterior tray adjusted to the vertical diameter is separated from the oral cavity, the posterior tray is assembled to the anterior tray, and then inserted back into the oral cavity to take an impression of the upper and lower jaw.

In this way, the process of calculating the vertical diameter and the process of taking the impression are substantially carried out as separate processes. Because of this, there was a problem in that the precision of the final manufactured denture was deteriorated due to the basic position where the tray is installed being changed during each process.

Korean Patent No. 10-1947635

In order to solve the above problems, the present invention aims to provide a denture manufacturing method with improved precision and a general-purpose bite device for denture manufacturing.

In order to solve the above problem, the present invention is a universal bite device formed in response to a standard dental arch preset to entirely surround the target arch, is inserted into the oral cavity, and a correction groove that is fitted with the target arch is provided on the inner surface through pressing force. A first step in which the separation support means provided in the universal bite device is adjusted so that the horizontal jaw position of the upper and lower jaw is determined and the vertical dimension is calculated; An occlusal scanning image of the outer surface of the upper and lower jaw supported at a distance through the universal bite device and a surface scanning image of the inner and outer surfaces of the universal bite device on which the correction groove is formed are acquired through an imaging device and transmitted to the planning unit. Step 2; A third step in which the surface scanning image is virtually overlapped and registered with the occlusal scanning image, and a replacement image corresponding to the surface information of the upper and lower jaw is calculated from the corrected groove image included in the surface scanning image; and a fourth step in which denture design information is generated based on the replacement image, the generated denture design information is transmitted to a manufacturing device, and the denture is finally manufactured.

Meanwhile, the present invention is formed in response to a standard dental arch that is preset to entirely surround the target arch and is disposed between the upper and lower jaw, so that a margin exceeding the width of the target arch faces the variable molded portion and opposing arch formed on the inner surface. It protrudes integrally to the outside of the variable mold fitting portion, but includes a dental protrusion with an artificial tooth gap formed in a negative shape on the outer surface, and the gap between the inner surface of the variable mold matching portion and the outer surface of the dental protruding portion protrudes to a height less than the standard vertical diameter and is higher than a preset softening temperature. Wax bites that soften upon heating treatment; And the upper and lower jaw are provided in the form of a plate whose outline is fixed to the wax bite installed on the lower jaw so that the upper and lower jaw are supported at a distance corresponding to the vertical diameter. The height adjustment portion, the end of which is fixed to the maxillary side, extends to a length exceeding the standard vertical diameter, but the upper and lower jaws are supported at a distance corresponding to the vertical diameter. A first spaced support portion is provided to be capable of moving up and down in the direction, and is fixed to the outside of the wax bite installed on the upper jaw so that the Gothic arch trajectory of the height adjustment portion is displayed through the forward and backward and left and right movements of the temporomandibular joint. It provides a general-purpose bite device for manufacturing dentures, including a spaced support means including a second spaced support portion that is provided in a plate shape whose ends are supported in contact.

Through the above solutions, the present invention provides the following effects.

First, through the separation support means provided between a pair of wax bites, accurate horizontal jaw position and vertical dimension can be calculated even when both the upper and lower jaw are edentulous, and the inner part that is softened during the process of installing the wax bite in the oral cavity is the target. This simple method of pressurizing and correcting the dental arch allows impressions of the edentulous gums to be taken at the same time, so the overall denture manufacturing period can be significantly shortened.

Second, through the wax bite, which softens during heating treatment, the molar side with a narrow spacing during mastication is easily pressed without thickness interference, and is corrected to suit the patient's vertical diameter and gum outer contour, making it easy to remove, assemble, and reinstall the divided tray. It is possible to solve the conventional problem of lowering the accuracy of oral information due to location changes.

Third, by heating the outer surface of the wax bite and then embedding and hardening the outer edges of both sides of the separation support means, it can be easily fixed without a separate coupling structure or part, and it is easy to fix it at an appropriate position and angle to suit the patient's oral conditions. By being able to adjust it accurately, the precision of the calculated information can be significantly improved.

Fourth, since the wax bite is provided as a standardized mass-produced product corresponding to the standard dental arch, the cost and man-hours required to manufacture it individually tailored to the patient are reduced and provided at a low price, so the manufacturing period and cost of dentures are significantly reduced, making it economical. It is hygienic as it can be completely melted and disposed of after use.

1 is a flow chart of a method for manufacturing dentures according to an embodiment of the present invention.
Figure 2 is a block diagram of a denture manufacturing system according to an embodiment of the present invention.
Figure 3 is an example diagram of a planning image according to an embodiment of the present invention.
Figures 4a and 4b are partial projection illustrations showing a wax bite among the general-purpose bite devices according to an embodiment of the present invention.
Figure 5 is a partial projection illustration showing the vertical diameter measurement process according to an embodiment of the present invention.
Figures 6a and 6b are exemplary diagrams showing a replacement image acquisition process according to an embodiment of the present invention.
Figure 7 is a partial projection illustration showing the vertical diameter measurement process according to another embodiment of the present invention.
Figure 8 is an example diagram showing the process of correcting design information of dentures according to an embodiment of the present invention.
Figure 9 is a partial projection illustration showing a spacing support means according to another embodiment of the present invention.

Hereinafter, a denture manufacturing method and a universal bite device for denture manufacturing according to a preferred embodiment of the present invention will be described in detail with reference to the attached drawings.

At this time, it is preferable to understand that the denture includes a denture that is adhesively fixed to the target arch through an adhesive and an overdenture that is supported on the alveolar bone through an implant but is selectively removable.

In the following, it is preferable to understand that the target arch is the arch requiring the dentures, and the opposing arch is the arch that occludes with the target arch. The opposing arch may be a deciduous jaw with some or all teeth remaining, or it may be completely edentulous like the target arch.

Figure 1 is a flow chart of a denture manufacturing method according to an embodiment of the present invention, Figure 2 is a block diagram of a denture manufacturing system according to an embodiment of the present invention, and Figure 3 is an embodiment of the present invention. This is an example of a planning image according to .

Referring to Figure 1, in the method of manufacturing dentures according to an embodiment of the present invention, a correction groove is formed in the general-purpose bite device through pressing force, and the horizontal jaw position is determined through the separation support means provided in the general-purpose bite device. In the step 1111, where the upper and lower jaws are supported at a distance corresponding to the vertical diameter, an occlusal scanning image of the outer surface of the upper and lower jaw on which the universal bite device is installed and a surface scanning image of the universal bite device on which the correction groove is formed are acquired, and A step of transmitting to the planning unit (1112), wherein the surface scanning image is virtually overlapped with the occlusal scanning image, and a replacement image corresponding to the surface information of the upper and lower jaw is calculated from the corrected groove image included in the surface scanning image ( 1113), and a step 1114 in which dentures are designed and finally manufactured based on the replacement image.

Referring to Figures 2 and 3, the denture manufacturing method is preferably carried out through the denture manufacturing system 200. The denture manufacturing system 200 preferably includes an imaging device 210, a planning unit 220, and a manufacturing device 230.

In detail, the imaging device 210 is a device for acquiring three-dimensional information about the oral cavity, and preferably includes a fixed scanner or a mobile oral scanner. In some cases, the imaging device 210 may further include a CT imaging device for acquiring a CT image including alveolar bone information of the upper and lower jaw.

Meanwhile, in the present invention, it is preferable to understand that the three-dimensional information about the oral cavity is information included in the occlusal scanning image (m4 in FIG. 6A) and the surface scanning image (m5 in FIG. 6A). The occlusal scanning image (m4 in FIG. 6A) is an image obtained by scanning the outer surfaces of the upper and lower jaws aligned to a preset vertical dimension (VD) using a separation support means provided in a general-purpose bite device. Here, it is desirable to understand that the preset vertical diameter (VD) is a vertical diameter suitable for each patient. The surface scanning image (m5 in FIG. 6A) is an image obtained by scanning the entire inner and outer surface of each general-purpose bite device that has been pressure-corrected so that the inner surface corresponds to the outer shape of each of the upper and lower jaw. Since each of the universal bite devices is corrected so that the inner portion is aligned with the upper and lower jaw, three-dimensional information about the oral cavity can be alternatively obtained from the surface scanning image (m5 in FIG. 6A).

It is desirable to understand that the planning unit 220 is a computer device that collects, calculates, and models information transmitted from an external device through wired or wireless communication and information previously stored in a digital library 240, which will be described later. Here, the digital library 240 is preferably understood as a database in which basic external shape information of parts required to manufacture the dentures is stored as three-dimensional vector data. It is preferable to understand that the basic external appearance information is design information for ready-made parts or pre-stored in a form that can manufacture the parts through the manufacturing device 230, which will be described later.

A plurality of three-dimensional appearance information pre-stored in the digital library 240 and scanning images acquired through the imaging device 210 are transmitted and loaded into the planning unit 220, and the planning image M is Information may be collected and generated through the planning unit 220.

Referring to FIG. 3, the planning image (M) is a three-dimensional image in which information necessary to generate design information (m10) of the denture is collected, and the three-dimensional information about the oral cavity corresponds to the vertical diameter (VD). It is an image that has been aligned and registered to The design information (m10) of the denture preferably includes a virtual tooth portion (m11) and a virtual gum portion (m12), and the virtual tooth portion (m11) and the virtual gum portion (m12) are 3 for the oral cavity. Virtual arrangement based on dimensional information is desirable.

In the planning image (M), design information (m10) of the denture is virtually installed on the target arch side, and tooth information (m3) about the opposing teeth can be set on the opposing arch side. Here, when both the upper and lower jaws are edentulous, the tooth information (m3) may also be design information (m10) of the denture. Alternatively, when the opposing arch is a deciduous jaw, the tooth information (m3) may be a scanning image of the remaining teeth of the opposing arch. In this embodiment, it is explained and shown that the upper and lower jaws are edentulous, and therefore, the tooth information (m3) can be displayed as design information (m10) of the denture.

It is desirable to understand that the three-dimensional information about the oral cavity is an alternative image (m1, m2) obtained through a series of processes described later. The replacement images (m1, m2) can be virtually aligned and matched to correspond to the vertical diameter (VD) through an image processing process described later, and the height of the artificial tooth crown is determined based on the replacement images (m1, m2). It can be set to correspond to the vertical diameter (VD). Here, the artificial tooth crown is preferably understood as a tooth replacement that is actually manufactured through the manufacturing device 230 using the virtual tooth portion m11 as design information.

Meanwhile, although not shown in the drawing, when the denture is the overdenture, placement information of the implant may be further set in the planning image (M).

It is preferable to understand that the manufacturing device 230 is a device that actually manufactures the denture according to the design information (m10) of the denture. The manufacturing device 230 is connected to the planning unit 220 through wired or wireless communication. The manufacturing device 230 is preferably understood to encompass devices used to manufacture conventional dentures, such as 3D printers, small CNC lathes, 3D milling devices, and injection mold devices.

Figures 4a and 4b are partial projection illustrations showing a wax bite among the general-purpose bite devices according to an embodiment of the present invention, and Figure 5 is a partial projection illustration showing the vertical diameter measurement process according to an embodiment of the present invention. . At this time, in this embodiment, the case where the upper and lower jaws are completely edentulous is used as an example to explain and illustrate.

Referring to Figures 3 to 5, the general-purpose bite device 10 is disposed between the upper and lower jaw, and a correction groove 16 that is molded to the target arch through a series of processes to be described later is provided with the general-purpose bite device ( 10) It can be formed on the inner surface of. At this time, the upper and lower jaw, whose horizontal jaw position is determined, can be supported and spaced apart at the vertical diameter VD through the spaced support means provided in the universal bite device 10.

Here, the universal bite device 10 is preferably provided as a pair so that it is installed on the upper and lower jaw, respectively. The universal bite device 10 is preferably formed in an arch shape corresponding to a preset standard dental arch so that each inner part entirely surrounds the outer surface of the target arch from the anterior side to both molars. At this time, the vertical spacing (d1, d2) between the outer surface and the inner surface of the universal biting device 10 is preferably formed at a height less than the standard vertical diameter. That is, while the general-purpose bite devices 10 are supported and spaced apart through the spaced support means 20, which will be described later, the outer surfaces of each of the general-purpose bite devices 10 can be spaced apart from each other.

It is preferable that the universal bite device 10 is provided with the spaced support means 20. The spacing support means (20) is fixed to the universal bite device (10) disposed on the upper and lower jaws, determines the horizontal jaw position of the upper and lower jaws, and supports the upper and lower jaws so that they correspond to the vertical diameter (VD). It is desirable to understand it as a device. The spacing support means 20 is preferably provided to include a first spacing support part 21 and a second spacing support part 22 so as to be individually fixed to each of the universal biting devices 10. At this time, in this embodiment, it is preferable to understand that the general-purpose bite device 10 is provided with the wax bite 11. That is, the first spaced support portion 21 and the second spaced support portion 22 are individually fixed to the general-purpose bite device 10 because the first spaced support portion 21 and the second spaced support portion 22 are It is preferable to understand that it is individually fixed to the wax bite 11.

The first spaced support portion 21 is provided in a plate shape and is fixed to the universal bite device 10 installed on the lower jaw, and the height adjustment portion 23, the end of which protrudes toward the upper jaw, is preferably provided to extend in the vertical direction. . The height adjustment part 23 is preferably extended to a length exceeding the standard vertical diameter, and may be provided at a height that protrudes toward the upper jaw in a state perpendicular to the first spaced support part 21 so that it can be raised and lowered. For example, the height adjustment part 23 may be provided as a screw member. In addition, as the height adjustment part 23 is fastened to the first spacing support part 21 so as to be screw-rotated, the height protruding toward the upper jaw can be adjusted.

The second spaced apart support portion 22 is provided in a plate shape and is fixed to the universal bite device 10 installed in the upper jaw, and the end of the second spaced support portion 22, that is, the end of the height adjustment portion 23, is in contact with the second spaced support portion 22. It is preferable that it is provided in the form of a supported plate. The gothic arch trace (g) of the height adjustment unit 23 may be displayed on the second spaced support unit 22 through the forward and backward and left and right movements of the temporomandibular joint. That is, the patient's horizontal jaw position can be determined based on the Gothic arch trajectory (g).

The first spacing support part 21 and the second spacing support part 22 are individually fixed to each of the universal bite devices 10, and the height adjustment part 23 is spaced apart in response to the height at which it protrudes toward the upper jaw side. The spacing between opposing surfaces of the support means 20 may be provided to exceed the standard vertical diameter. Here, the opposing surface of the spacing support means 20 is preferably understood as the facing surface of the first spacing support part 21 and the second spacing support part 22. In addition, as the protrusion height of the height adjustment unit 23 is rotated and adjusted according to the patient's masticatory sensitivity, the gap between the upper and lower jaw can be aligned to correspond to the vertical diameter (VD).

Here, it is preferable that the general-purpose bite device 10 installed on at least one side of the upper and lower jaw is equipped with a wax bite 11 that softens in a preset softening temperature range. The wax bite 11 is preferably installed in the target arch where the denture is required. Moreover, when the upper and lower jaws are completely edentulous, it is preferable that the wax bite 11 is installed on the upper and lower jaws, respectively. The wax bite 11 is preferably made of paraffin wax material.

The wax bite (11) preferably includes a variable molding portion (12) and a tooth protruding portion (13).

The variable fitting portion 12 is a part of the wax bite 11 that faces the outer surface of the target arch, and the correction fitting groove 16 is preferably understood as a part that is formed to correspond to the external shape of the target arch. do. It is preferable that the variable fitting portion 12 has a margin portion that exceeds the width of the target arch formed on the inner portion 14. Therefore, even if the wax bite 11 is prepared in a standardized size corresponding to a standard dental arch, it can be interchangeably applied to the dental arches of various patients. In addition, the portion that faces the outer surface of the target arch is increased through the margin, so it can be stably installed in the target arch.

It is preferable that the tooth protruding portion 13 integrally protrudes to the outside of the deformable molding portion 12 and the artificial interdental space 15 is formed in a concave shape on the outer surface. The artificial interdental space 15 can be used as reference information in the image registration process, which will be described later.

At this time, the distance (d1, d2) between the inner surface of the variable molding part 12 and the outer surface of the teeth protruding part 13 is protruded below the standard vertical diameter so that the teeth protruding part 13 is spaced apart from the opposing arch side. desirable. Therefore, the vertical diameter (VD) can be calculated only through the spaced support means (20).

It is preferable that the outer portion of the spacing support means (20) is embedded and fixed to the molar side of the dental protrusion (13). In detail, since the wax bite 11 is provided with the teeth protruding part 13 and the deformable molding part 12 as one piece, it is preferable that the teeth protruding part 13 is also softened by heating in the softening temperature range. Therefore, after the tooth protruding portion 13 is softened, it is preferable that the outer upper and lower surfaces of the spacing support means 20 are embedded in the softened tooth protruding portion 13. Subsequently, when the softened dental protrusion 13 is cooled and hardened below the softening temperature range, the spaced support means 20 can be firmly fixed to the wax bite 11 without a separate fixing means.

Moreover, the outer upper, lower, and side surfaces of the spacing support means 20 can be embedded in the softened dental protrusion 13. Through this, the separation support means 20 is prevented from moving unnecessarily in the process of determining the horizontal jaw position and calculating the vertical dimension of the upper and lower jaw, and thus the precision and accuracy of the horizontal jaw position and the vertical dimension can be significantly improved. At this time, molten wax may be further applied and layered on the outer side of the spacing support means 20 so that the spacing support means 20 can be more firmly embedded and fixed in the universal bite device 10 and hardened.

Meanwhile, it is preferable that the wax bites 11 to which the spaced support means 20 are respectively fixed are installed on the upper and lower jaws, respectively. In addition, it is preferable that the correction groove 16 that is fitted with the target arch is formed in the wax bite 11 by a pressing force applied from the outside of the wax bite 11 toward the target arch.

In detail, it is preferable that the outer side of the spacing support means 20 is embedded and fixed on both molar sides of the dental protrusion 13, which is the outer surface of each wax bite 11. In addition, it is preferable that the deformable molded portion 12, which is the inner surface 14 of the wax bite 11, is heated to the softening temperature range so as to be softened.

The inner surface 14 of the wax bite 11, in which the spaced support means 20 is embedded and fixed to the outer surface, and the inner surface 14 is softened, may be seated and placed on the outer surface of the target arch. And, as the pressing force is applied from the outside of the wax bite 11, the inner surface 14 of the wax bite 11 can be pressurized and corrected to correspond to the external shape of the target arch. For example, the operator may apply force to the wax bite 11 to provide pressing force so that the correction groove 16, which is molded to the outer surface of the target arch, is formed on the inner surface 14. Of course, in some cases, the correction groove 16 may be formed in the wax bite 11 as the patient's bite force is transmitted to the wax bite 11.

That is, a process of bringing the wax bite (11), to which the spaced support means (20) is fixed, into close contact with the upper and lower jaw in order to calculate the horizontal jaw position and the vertical dimension (VD) through the spaced support means (20). Impressions of the edentulous gums can be taken. At this time, the universal bite device 10 can be installed accurately and precisely to the upper and lower jaw through the correction groove 16 formed on the inner surface 14 of the wax bite 11. Therefore, the horizontal position of the patient can be accurately determined through the separation support means 20 fixed to the universal bite device 10, and the vertical dimension VD can also be accurately calculated.

Here, the correction groove 16 may be supplementally corrected through relining resin. That is, even if a bubble layer is generated on the inner surface of the compensation groove 16 due to foreign substances such as needles in the process of forming the correction groove 16, this bubble layer can be buried through the relining resin. Through this, the outline of the compensation groove 16 can be formed more accurately and precisely. Therefore, the precision and accuracy of the image obtained in the scanning image acquisition process described later can be significantly improved. At this time, the relining resin may be applied after the correction groove 16 is cured.

As such, in the present invention, the general-purpose wax bite 11 device installed in the target dental arch is provided with the wax bite 11 that is easily deformed by the pressing force above the softening temperature. Accordingly, even if the wax bite 11 extends as a whole from the anterior tooth side to the molar side, the pressure can be corrected by gently wrapping the whole between the gums of the upper and lower jaw when pressed. In other words, the conventional problem of the upper and lower jaws on both molars not being engaged at the correct height due to the height of the wax bite 11 can be solved.

Through this, in a state where the general-purpose bite device 10 is installed in the oral cavity, the calculation process of the central position and the vertical diameter and the correction process of the general-purpose bite device 10 are performed substantially simultaneously. In addition, for this calculation process and correction process, the universal bite device 10 can be provided as an integrated piece without being divided into the anterior and posterior teeth, and the universal bite device 10 is not separated from the oral cavity. . Therefore, in each process, the universal bite device 10 is separated, assembled, and reinstalled in the oral cavity, and the problem of the universal bite device 10 being moved to a different position from the installation position before separation can be fundamentally solved. . Through this, even when there is no solid reference indicator that can constrain the position of the universal bite device 10 due to the upper and lower jaw being edentulous, the universal bite device 10 is aligned corresponding to the vertical diameter (VD). The position and the positional relationship in which the compensation groove 16 is formed may correspond to each other.

In addition, the process from measuring the vertical diameter (VD) to the impression taking process can be carried out substantially simultaneously in a single visit by the patient with the universal bite device 10 installed in the oral cavity, so the manufacturing period of dentures can be significantly shortened. . In addition, since the installation position is fundamentally prevented from being deformed during the process of separating and reinstalling the general-purpose bite device 10, the accuracy and precision of the vertical diameter (VD) and impression obtained through the general-purpose bite device 10 are improved. can be significantly improved.

At this time, the wax bite 11 is manufactured for general use in response to standard dental arches according to age and dental jaw size, and can be adjusted to suit the oral cavity of various patients as it is softened within the softening temperature range. Therefore, the wax bite 11 can be mass-produced and provided at a low price, and the man-hours required to manufacture the general-purpose bite device 10 according to the oral conditions of each patient are shortened, thereby reducing the overall period and cost of denture manufacturing. This can be significantly reduced.

At the same time, the wax bite 11 has the artificial tooth gap 15 engraved on the tooth protrusion 13. Through this, the expected alignment relationship between the upper and lower jaws can be intuitively confirmed with the universal bite device 10 installed simultaneously on the upper and lower jaws, so the vertical diameter (VD) can be calculated more accurately. Since these wax bites 11 are made of paraffin wax, they can be melted by heating above the softening temperature and then discarded, thereby significantly improving hygiene.

And, the spacing support means 20 is embedded and hardened and fixed to the tooth protruding portion 13 that has been softened above the softening temperature. Therefore, the position where the spacing support means 20 is embedded and fixed can be easily adjusted according to the patient's oral conditions, and since the spacing support means 20 is fixed at a position and angle suitable for the oral cavity of each patient, the accurate vertical diameter (VD) and central position can be calculated, and the precision of the correction groove 16 can be significantly improved. Moreover, after the hardening of the dental protrusion 13 is completed, the spacing support means 20 can be firmly fixed, so the convenience of the procedure can be significantly improved.

Meanwhile, when the upper and lower jaws are completely edentulous, it is preferable that the vertical dimension (VD) is calculated by considering the horizontal jaw position of the patient. In detail, the wax bite (11) equipped with the spacing support means (20) is installed on the upper and lower jaw, and the second spacing support unit (22) is formed on the outer surface of the second spacing support portion (22) through the forward and backward and left and right movements of the temporomandibular joint. 1 It is desirable that the gothic arch trace (g) of the spaced support portion 21 is formed. Also, if it is determined that the Gothic arch trajectory (g) corresponds to the normal central position, it is desirable that the gap between the upper and lower jaw is adjusted to correspond to the vertical diameter (VD). That is, as the horizontal jaw position of the patient is determined and the height adjustment unit 23 is adjusted to calculate the vertical diameter (VD), dentures for patients with completely edentulous upper and lower jaws can be designed and manufactured accurately and precisely. there is.

Furthermore, the first spaced support portion 21 may be provided with a plurality of fastening grooves spaced apart in the front and rear directions to enable the height adjustment portion 23 to be raised and lowered. Therefore, since the position of the height adjustment unit 23 is formed to be optimized for the patient, the vertical diameter (VD) and the central position can be calculated more accurately.

Figures 6a and 6b are exemplary diagrams showing a replacement image acquisition process according to an embodiment of the present invention.

Referring to FIGS. 6A and 6B, the occlusal scanning image (m4) and the surface scanning image (m5) are acquired through the imaging device 210, and the acquired scanning images are transmitted to the planning unit 220. This is desirable.

The occlusal scanning image (m4) is preferably obtained by scanning the outer surface of the upper and lower jaw supported at a distance corresponding to the vertical diameter (VD) through the general-purpose bite device 10 through the imaging device 210. In detail, in the occlusal scanning image (m4), a wax bite image spaced apart corresponding to the vertical diameter (VD) is displayed in three dimensions through the spacing support means 20, and an artificial interproximal image is displayed in the wax bite image. This is desirable.

The surface scanning image (m5) is preferably obtained by scanning the inner and outer surfaces of the universal bite device 10 separated from the oral cavity using the imaging device 210. The surface scanning image (m5) preferably includes a first surface image (m6) and a second surface image (m7).

The first surface image m6 is preferably understood as an image obtained for the inner and outer surfaces of the universal bite device 10 installed in the target dental arch. In the first surface image m6, a corrected groove image (hereinafter referred to as first corrected groove image m8) corresponding to the external shape of the target dental arch is displayed in three dimensions on the inner surface of the wax bite image. In addition, the second surface image m7 is preferably understood as an image obtained for the inner and outer surfaces of the universal bite device 10 installed in the opposing arch. In the second surface image (m7), a corrected groove image (hereinafter referred to as second corrected groove image, m9) corresponding to the external shape of the opposing arch is displayed in three dimensions on the inner surface of the wax bite image. The surface scanning image (m5) and the occlusal scanning image (m4) are preferably transmitted and loaded from the imaging device 210 to the planning unit 220 through wired or wireless communication.

Meanwhile, it is preferable that the first surface image (m6) and the second surface image (m7) are matched and virtually aligned based on a common portion with the occlusal scanning image (m4). At this time, the common part between each scanning image may be an artificial interdental image. In detail, the artificial interdental space 15 may be formed as an engraving on the outer surface of the dental protrusion 13, preferably on a portion corresponding to the labial and lingual sides. Therefore, each artificial tooth gap 15 can be formed with a characteristic and clear outline and depth difference in the dental protrusion 13. Therefore, the artificial interdental image displayed by scanning the artificial interdental space 15 can be set as a clear common part between each of the scanning images.

Since the occlusal scanning image (m4) includes information about the vertical diameter (VD), the first surface image (m6) and the second surface image (m7) are virtually aligned based on the occlusal scanning image (m4). ) can also be spaced apart corresponding to the vertical diameter (VD). When the virtual alignment of the first surface image (m6) and the second surface image (m7) is completed, the occlusal scanning image (m4) is preferably erased. Here, it is desirable to understand that image erasing includes deleting selected images or data from the overall image data and rendering them invisible through transparency.

It is preferable that the remaining images excluding the corrected groove images (m8, m9) included in the first surface image (m6) and the second surface image (m7) are erased. In detail, a boundary line is set along the boundary of each corrected groove image (m8, m9) in the wax bite image displayed in the first surface image (m6) and the second surface image (m7), respectively. Then, based on the boundary line, the outer image excluding each of the corrected groove images (m8, m9) is set as an erase area, and the erase area is erased.

At this time, since each wax bite image is stored as surface information with substantially no thickness, the three-dimensional coordinate value for the inner contour and the three-dimensional coordinate value for the outer contour of each corrected groove image (m8, m9) are substantially same. Accordingly, each of the corrected groove images (m8, m9), which were concavely displayed in the wax bite 11, can be swapped to protrude to face each other to create replacement images (m1, m2). Here, the replacement images (m1, m2) are the first replacement image (m1) created by swapping the first correction type home image (m8) and the second replacement image (m9) created by swapping the second correction type home image (m9). 2It is desirable to include an alternative image (m2). Here, swap is preferably understood as replacing or exchanging a preset image with another image or an image transformed through image processing.

The first substitute image (m1) and the second substitute image (m2) are virtually arranged in correspondence to the vertical diameter (VD) based on the occlusal scanning image (m4) through the above-described process, and the planning unit 220 ) is stored in And, data stored in the planning unit 220 with the first replacement image (m1) and the second replacement image (m2) virtually spaced apart so as to correspond to the vertical diameter (VD) is the planning image (M). Understanding is desirable.

At this time, the first replacement image (m1) and the second replacement image (m2) are used with the wax bite (11) to fit the upper and lower jaw with the horizontal jaw position and vertical dimension (VD) suitable for each patient calculated. It is obtained/calculated from a scanning image of the corrected inner part of . Accordingly, the first replacement image (m1) and the second replacement image (m2) can substantially correspond to the outer contour of the upper and lower jaw with high precision. In addition, the general-purpose bite device 10 is provided with a wax bite 11 that is easily deformed by an external force when softened in the above softening temperature range, but is not deformed by a predetermined external force after cooling. Therefore, accurate external shape information of the upper and lower jaw can be easily calculated in place of the gum, which is a highly fluid soft tissue, and the precision and accuracy of the dentures designed and manufactured based on this can be significantly improved.

Of course, in some cases, a dental arch scanning image may be obtained by scanning the actual outer surface of the target arch and the opposing arch using the imaging device 210. Also, the planning image (M) may be obtained by virtually overlapping the arch scanning image with the occlusal scanning image (m4) based on a common portion. At this time, a marker member that is visually distinguished from the gums and the universal bite device 10 may be further attached to the target arch and the opposing arch so that a common portion is displayed in the arch scanning image and the occlusal scanning image (m4). there is.

In addition, the first replacement image (m1) and the second replacement image (m2) may be matched with the CT image, and the planning image (M) includes an image corresponding to the external shape of the target arch and the opposing arch. In addition, information on the shape and bone density of the alveolar bone may also be included.

Figure 7 is a partial projection diagram showing the vertical diameter measurement process according to another embodiment of the present invention. In this embodiment, the basic configuration except for the joint splint 17 is the same as the above-described embodiment, so detailed description of the same configuration will be omitted.

Referring to FIG. 7, the general-purpose bite device 10 may further include a matching splint 17. The joint splint 17 may be installed in the opposing arch when the opposing arch is a partially deciduous jaw or deciduous jaw. That is, the universal bite device 10 includes the wax bite 11 and the joint splint 17, and the wax bite 11 can be installed on the upper and lower jaws where both the upper and lower jaws are edentulous. . Alternatively, if at least one side of the upper and lower jaw is deciduous or partially dentate, the wax bite 11 may be installed in the edentulous jaw and the molded splint 17 may be installed in the deciduous or partially deciduous jaw. Here, in this embodiment, it is explained and shown that the target arch is an edentulous lower jaw and the opposing arch is an edentulous upper jaw.

The molding splint 17 is formed roundly along the direction of the dental arch of the opposing arch, and a molding groove 18 of an inner shape that is molded to the occlusal end of the remaining teeth of the opposing arch is preferably formed on the inner surface. It is also preferable that the gap between the outer surface of the coupling splint 17 and the coupling groove 18 is formed to be less than the standard vertical diameter.

In detail, the design information of the molded splint 17 can be generated based on an oral scanning image obtained by scanning the outer surface of the opposing arch, and the design information of the molded splint 17 can be stored in the manufacturing device 230. It can be transmitted to and manufactured as an actual product. That is, as the external outline of the occlusal end of the remaining teeth of the opposing arch shown in the oral scanning image is swapped with the inner contour of the molding groove 18, the molding splint 17 manufactured in real life is accurately aligned with the opposing arch. The type can be installed. At this time, the manufacturing device 230 may be a three-dimensional printer, and the molded splint 17 can be manufactured quickly by three-dimensional printing.

In addition, it is preferable that the gap between the upper and lower jaws, where the wax bite 11 is installed in the target arch and the jaw splint 17 is installed in the opposing arch, is aligned and supported through the spacing support means 20. In detail, the wax bite 11 is provided on the lower jaw, and the first spaced support portion 21 including the height adjustment portion 23 can be fixed to the wax bite 11. In addition, the molded splint 17 is provided in the upper jaw, and the second spaced support portion 22 can be fixed to the molded splint 17. Moreover, the second spaced support portion 22 may be three-dimensionally printed integrally with the molded splint 17.

Here, when the target arch is the upper jaw and the opposing arch is the lower jaw, the wax bite may be installed on the upper jaw and the molded splint may be installed on the lower jaw. In addition, the second spacing support may be fixed to the wax bite and the first spacing support may be fixed or formed integrally with the molded splint, and such modifications fall within the scope of the present invention.

Subsequently, the distance between the first spaced support portion 21 and the second spaced support portion 22 is adjusted according to the patient's chewing sensitivity, and the upper and lower jaws correspond to the horizontal jaw position and the vertical dimension (VD). It can be sorted as much as possible.

Meanwhile, although not shown in the drawing, when the opposing arch is a deciduous jaw, the planning image (M) is the surface scanning image (m5) of the wax bite (11) installed and corrected in the target arch and the outer surface of the opposing arch. The oral scanning image for may be registered to correspond to the vertical diameter (VD) based on the occlusal scanning image (m4).

Figure 8 is an exemplary diagram showing the process of correcting design information of dentures according to an embodiment of the present invention.

Referring to FIG. 8, the second replacement image (m2) may be virtually moved based on the Gothic arch trajectory (g).

In detail, in the step of determining the horizontal jaw position of the upper and lower jaw, a motion image of the temporomandibular joint moving in the front-back and left-right directions may be further obtained. And, based on the motion image, the denture design information (m10) virtually set in the second alternative image (m2) is linked with the second alternative image (m2) to virtually move along the Gothic arch trajectory (g). It can be. The motion image can be obtained by motion scanning a three-dimensional motion trajectory of the universal bite device 10 using a dynamic scanner while it is supported in occlusion by the spacing support means 20. The three-dimensional motion trace is displayed as a Gothic arch-shaped trace as the temporomandibular joint moves in a three-dimensional space including the left-right, forward-backward, and up-down directions, and is displayed on the surface of the second spaced support portion 22. It can correspond to the Gothic arch trajectory (g).

Then, the motion image is transmitted to the planning unit 220, and the motion image and the planning image (M) may overlap. And, the design information (m10) of the dentures can be virtually moved along the Gothic arch trajectory based on the motion image.

Meanwhile, the area where the tooth part information (m3) virtually displayed on the first replacement image (m1) side and the virtual chewing surface of the virtual tooth part (m11) included in the design information (m10) of the denture overlap with each other. It is desirable that the overlap occlusal area (m14) is displayed in . This overlapping occlusal area m14 may be displayed in a characteristic color so that it can be visually confirmed through a display unit that displays information calculated and acquired through the planning unit 220.

In addition, it is preferable that an overlap erase area for the overlap occlusal area (m14) is set in the design information (m10) of the denture. Accordingly, the virtual chewing surface side of the virtual tooth portion m11 is erased by the overlap erase area, so that the design information m10 of the denture can be corrected.

As such, in the present invention, in the process of generating the design information (m10) of the denture, the chewing surface of the final manufactured denture can be corrected to preferably occlude with the chewing surface of the opposing tooth. Through this, after the dentures are finally manufactured and installed in the oral cavity, cumbersome additional correction work through repetitive mastication and occlusion is minimized, thereby significantly improving the convenience of the procedure.

Figure 9 is a partial projection illustration showing a spacing support means according to another embodiment of the present invention. In this embodiment, the basic configuration except for the alignment protrusion 24 corresponds to the above-described embodiments, so detailed description of the same configuration will be omitted.

Referring to FIG. 9, alignment protrusions 24 spaced apart at a preset standard interval may protrude along the left and right directions of the spacing support means 20. In detail, the alignment protrusion 24 may be formed as a polygonal shape with preset width, length, and height, or a semicircular protrusion structure with a preset diameter value. In addition, the spacing of each of the alignment protrusions 24 may be spaced left and right corresponding to the standard interval, and in some cases, may be spaced apart in the front and rear direction of the spacing support means 20 corresponding to the standard interval. . Accordingly, the first surface image (m6) and the second surface image (m7) may include an alignment protrusion image.

Meanwhile, a virtual spacing jig, which is three-dimensional external shape information of the spacing support means 20, may be previously stored in the digital library 240. The virtual spacing jig may correspond to actual design information of the spacing support means (20). That is, the virtual spacing jig and the spacing support means 20 are uniformly set and formed in the same shape and size, and the virtual spacing jig has preset values for the size, position, spacing, etc. of each of the alignment protrusions 24. Dimension information may be previously stored. The virtual spacing jig may be loaded from the digital library 240 to the planning unit 220. The virtual spacing jig may include a virtual protrusion that is three-dimensional external shape information of the alignment protrusion 24. The virtual protrusion may function as reference information on which the alignment protrusion image overlaps.

The virtual spacing jig and the alignment protrusion image may be preliminary overlapped based on a preset alignment area. Here, the alignment area can be set to a portion displayed at the same location in each image. Additionally, the alignment protrusion image may be virtually moved to be virtually aligned with the virtual spacing jig. At this time, since both ends of the spaced support means 20 are substantially fixed to the universal bite device 10, a scanning image of the universal bite device 10 and a scanning image of the spaced support means 20 can be obtained integrally. Accordingly, when the alignment protrusion image is virtually moved to virtually match the virtual protrusion, the scanning image for the general-purpose bite device 10 can be moved in conjunction.

That is, scan distortion that may occur during the scanning process of the universal bite device 10, which is formed in an arch shape from the anterior side to the bimolar side, can be corrected based on the standard information standardized and stored in the digital library 240. Accordingly, the accuracy and precision of the first replacement image (m1) and the second replacement image (m2) can be further improved.

Meanwhile, terms such as “include,” “comprise,” “equip,” or “have,” as used above, mean that the corresponding component may be present, unless specifically stated to the contrary. Rather than excluding a component, it should be interpreted as allowing additional inclusion of other components. All terms, including technical or scientific terms, unless otherwise defined, have the same meaning as generally understood by a person of ordinary skill in the technical field to which the present invention pertains. Commonly used terms, such as terms defined in a dictionary, should be interpreted as consistent with the contextual meaning of the related technology, and should not be interpreted in an idealized or overly formal sense unless explicitly defined in the present invention.

As described above, the present invention is not limited to the above-described embodiments, and modifications can be made by those skilled in the art without departing from the scope of the claims of the present invention. And such modifications fall within the scope of the present invention.

10: General purpose bite device 11: Wax bite
12: Variable joint 13: Dental protrusion
16: Compensation joint groove 17: Mold joint splint
20: separation support means 21: first separation support
22: Second spaced support m1, m2: Alternative image
m4: Occlusal scanning image m5: Surface scanning image
m8, m9: Compensated groove image VD: Vertical diameter

Claims (10)

A general-purpose bite device formed in response to a standard dental arch preset to entirely surround the target arch is inserted into the oral cavity, and a correction groove that matches the target arch is formed on the inner surface through pressing force, and the horizontal jaw position of the upper and lower jaw is determined. A first step in which the spacing support means provided in the universal bite device is adjusted to calculate the vertical diameter;
An occlusal scanning image of the outer surface of the upper and lower jaw supported at a distance through the universal bite device and a surface scanning image of the inner and outer surfaces of the universal bite device on which the correction groove is formed are acquired through an imaging device and transmitted to the planning unit. Step 2;
A third step in which the surface scanning image is virtually overlapped and registered with the occlusal scanning image, and a replacement image corresponding to the surface information of the upper and lower jaw is calculated from the corrected groove image included in the surface scanning image; and
A denture manufacturing method comprising a fourth step in which denture design information is generated based on the replacement image, the generated denture design information is transmitted to a manufacturing device, and the denture is finally manufactured. According to claim 1,
In the first step, the general-purpose bite device is formed at a height less than the standard vertical diameter and installed on the upper and lower jaw, respectively, and the general-purpose bite device installed on at least one side of the upper and lower jaw softens wax at a preset softening temperature or higher. It is provided in bytes,
The spacing support means is individually fixed to each of the universal bite devices, and the spacing between opposing surfaces exceeds the standard vertical diameter, but is provided so that the spacing is selectively adjusted. According to claim 2,
In the first step, the correction groove is
A step of heating to the softening temperature range so that the inner part of the wax bite to which the spaced support means is fixed to the outer surface is softened;
A step of seating and disposing the inner part of the wax bite on the outer surface of the target arch;
A method of manufacturing a denture, characterized in that it is formed by pressing the inner portion to correspond to the outer shape of the target arch by the pressing force applied from the outside of the wax bite to the target arch. According to claim 2,
In the first step, the wax bite is
The entire outer surface of the target arch from the anterior side to both molars is covered, and a margin exceeding the width of the target arch is integrally protruded to the outside of the variable molded portion so as to face the variable molded portion and the opposing arch formed on the inner surface. The artificial interdental space includes dental protrusions formed in a negative manner,
A method of manufacturing dentures, characterized in that the gap between the inner surface of the variable mold portion and the outer surface of the dental protrusion is protruded to be less than the standard vertical diameter so that the dental protrusion is spaced apart from the opposing arch. According to claim 4,
The first step is,
A step of softening the tooth protrusion by heating it to the softening temperature range;
A method of manufacturing dentures, comprising the step of embedding the outer upper and lower surfaces of the spacing support means into the dental protrusion and fixing the dental protrusion by hardening. According to claim 2,
In the first step, the general-purpose biting device further includes a molding splint having a molding groove formed on the inner surface along the direction of the dental arch, which is molded to the occlusal end of the remaining teeth of the opposing arch that occludes with the target arch,
A method of manufacturing a denture, characterized in that the wax bite is installed in the target arch, and the gap between the upper and lower jaws, where the molded splint is installed in the opposing arch, is aligned and supported through the spacing support means. According to claim 2,
The first step is,
A first spacing support, the end of which protrudes toward the maxillary side and extends beyond the standard vertical diameter, is fixed to the general-purpose bite device installed in the lower jaw, and a second spacing support, with the end of the first spacing support being contacted and supported, is attached to the upper jaw. A step of fixing to the installed general-purpose byte device,
Dentures comprising a step of determining the horizontal jaw position based on the Gothic arch trajectory of the first spaced support portion displayed on the outer surface of the second spaced support portion through the forward and backward and left and right movements of the temporomandibular joint. Manufacturing method. According to claim 7,
The fourth step is,
A step of displaying an overlapped occlusal area between the tooth information of the opposing arch that occludes with the target arch based on the Gothic arch trajectory and the design information of the denture;
A method of manufacturing dentures, characterized in that it further includes the step of correcting the design information of the denture by setting an overlap erasing area for the overlap occlusal area in the design information of the denture. According to claim 1,
In the second step, the surface scanning image includes a first surface image of the inner and outer surfaces of the universal bite device installed in the target arch and a first surface image of the inner and outer surfaces of the universal bite device installed in the opposing dental arch that occludes with the target arch. 2Includes surface image,
The third step is,
Virtually aligning the first surface image and the second surface image by matching them based on a common portion with the occlusal scanning image;
A step of erasing images other than the corrected groove image included in the first surface image and the second surface image;
A method of manufacturing dentures, comprising the step of swapping each of the correction groove images so that they protrude to face each other to create the replacement image. It is formed in response to a preset standard dental arch to entirely surround the target arch and is disposed between the upper and lower jaw, and the outer portion of the variable molded portion is such that a margin exceeding the width of the target arch faces the variable molded portion and the opposing dental arch formed on the inner surface. It protrudes integrally with the teeth, but includes a dental protrusion with an artificial interdental space on the outer surface. The gap between the inner surface of the variable molded portion and the outer surface of the dental protrusion protrudes to a height less than the standard vertical diameter, and softens when heated above a preset softening temperature. wax bite; and
It is provided in the form of a plate whose outline is fixed to the wax bite installed on the lower jaw so that the upper and lower jaw are supported at a distance corresponding to the vertical diameter, and the height adjustment portion, the end of which is fixed to the maxillary side, extends to a length exceeding the standard vertical diameter, but in the vertical direction. A first spaced support part is provided to be able to be lifted up and down, and is fixed to the outside of the wax bite installed in the upper jaw so that the Gothic arch trajectory of the height adjustment part is displayed through the forward and backward and left and right movements of the temporomandibular joint, and the end of the height adjustment part. A universal bite device for manufacturing dentures including a spaced support means including a second spaced support portion provided in a plate shape that is supported by temporary contact.

Images