KR101631258B1 - manufacturing method for 3D oral confirm model using digital scan body - Google Patents

manufacturing method for 3D oral confirm model using digital scan body Download PDF

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KR101631258B1
KR101631258B1 KR1020150075115A KR20150075115A KR101631258B1 KR 101631258 B1 KR101631258 B1 KR 101631258B1 KR 1020150075115 A KR1020150075115 A KR 1020150075115A KR 20150075115 A KR20150075115 A KR 20150075115A KR 101631258 B1 KR101631258 B1 KR 101631258B1
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South Korea
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digital
scan body
image
oral
virtual
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KR1020150075115A
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Korean (ko)
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김진철
김진백
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주식회사 디오
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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C9/00—Impression cups, i.e. impression trays; Impression methods
    • A61C9/004—Means or methods for taking digitized impressions
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C19/00—Dental auxiliary appliances
    • A61C19/04—Measuring instruments specially adapted for dentistry
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C9/00—Impression cups, i.e. impression trays; Impression methods
    • A61C9/004—Means or methods for taking digitized impressions
    • A61C9/0046—Data acquisition means or methods

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  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Epidemiology (AREA)
  • Dentistry (AREA)
  • Animal Behavior & Ethology (AREA)
  • Oral & Maxillofacial Surgery (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Biophysics (AREA)
  • Dental Tools And Instruments Or Auxiliary Dental Instruments (AREA)

Abstract

The present invention provides a manufacturing method of a three-dimensional oral confirm model using a digital scan body, comprising: a first step of coupling a digital scan body having a scan reference surface to correspond to a virtual digital scan body selected from a three-dimensional digital library to a fixture implanted in an oral cavity of a patient; a second step of acquiring an oral scan image with respect to the oral cavity of the patient, including a position where the digital scan body is coupled, and acquiring a three-dimensional oral image through the oral scan image; a third step of matching the virtual digital scan body with a digital scan body image displayed on the three-dimensional oral image, and virtually arranging the matched virtual digital scan body; a fourth step of matching a virtual digital analog selected to correspond to the fixture from the three-dimensional digital library with the virtual digital scan body which is virtually arranged, and virtually arranging the matched virtual digital analog; and a fifth step of acquiring a digital impression image of which parts corresponding to the virtual digital analog and the virtual digital scan body are removed from the three-dimensional oral image, and producing a three-dimensional oral confirm model by three-dimensionally printing the digital impression image. The manufacturing method of a three-dimensional oral confirm model using a digital scan body of the present invention enables to more accurately and easily produce an impression model corresponding to an oral cavity of a patient.

Description

[0001] The present invention relates to a method for manufacturing a three-dimensional oral conform model using a digital scan body,

The present invention relates to a three-dimensional oral conform modeling method using a digital scan body, and more particularly, to a three-dimensional oral conform modeling method using a digital scan body capable of more accurately and conveniently manufacturing an impression model corresponding to the inside of a mouth of a subject, And a manufacturing method thereof.

Generally, an implant refers to a substitute for replacing a human tissue when the original human tissue is lost, but refers to implanting an artificial tooth in the dentistry.

That is, a fixture made of titanium or the like which does not have a rejection reaction to the human body can be substituted for the lost root, and then the teeth are inserted into the alveolar bone, and the tooth is restored by fixing the artificial tooth.

At this time, it is important to implement the same impression model as that of the dentist's mouth.

On the other hand, a conventional impression model is manufactured as follows. First, a healing abutment is inserted into a fixture placed in the mouth of a client and the healing abutment is separated from the fixture after a predetermined period of time has elapsed so that the fixture can be fused and attached, and the impression impression (Coping).

Thereafter, an impression material, such as a resin, is applied to the periphery of the coping, then the corpusing is performed to obtain a sound for teeth around the coping, and the copings coupled to the fixture are separated to form Combines the coping with the engraved engraving of the coping, and combines the replica fixture analog with the coping.

When the impression model is acquired by injecting gypsum into the inner surface of the sound pattern, the impression model displays the perforations in the space formed by the analog, and the top height, direction, etc. of the fixture can be analyzed through the perforation, Thereby manufacturing a prosthesis such as a crown to be coupled to the fixture.

However, in the past, when the impression material is injected around the copings disposed in the grooves, the impression material is deformed due to the deformation of the position of the copings due to the injection pressure of the impression material, thereby making it difficult to produce a correct impression model.

In addition, when the manufactured impression model is damaged or lost, the impression model of the same shape can not be obtained repeatedly due to the deformation of the sound due to the manufacturing process.

Further, as the regulation of the implantation-related regulations is increased, the importance of storing and managing the inside of the patient's mouth at the time of the procedure and the impression model indicating the perforation state at the time of fixture placement is increasing, As a result, the interest in manufacturing and maintaining / maintaining the impression model is increasing.

Korean Patent No. 10-1495733

The object of the present invention is to provide a method for manufacturing a three-dimensional oral conform model using a digital scan body which can more accurately and conveniently manufacture an impression model corresponding to the inside of a mouth of a subject.

According to an aspect of the present invention, there is provided a digital scan method comprising: a first step of coupling a digital scan body having a scan reference plane to a virtual digital scan body selected from a 3D digital library in a fixture placed in an oral cavity of a client; A second step of acquiring an oral scan image of the inside of the subject including the engagement position of the digital scan body, and acquiring a three-dimensional oral image through the oral scan image; A third step in which the virtual digital scan body is matched to the digital scan body image displayed in the three-dimensional oral image, and the virtual scan body is fictitiously arranged; A fourth step of matching virtual digital analogs selected to correspond to the fixture from the 3D digital library to the virtually arranged virtual digital scan bodies so as to be arranged in a virtual manner; And a fifth step of obtaining a digital impression image by removing portions corresponding to the virtual digital analog and the virtual digital scan body from the three-dimensional oral image, wherein the digital impression image is three-dimensionally printed and a three- The present invention provides a method for manufacturing a three-dimensional oral conform model using a digital scan body.

The third step includes a step of selecting and inputting a plurality of alignment reference points on a scan reference plane of the digital scan body image and matching the alignment reference points of the virtual digital scan body to the input alignment reference point .

At this time, in the fifth step, the oral conform model includes a partial block portion corresponding to the placement position of the digital scan body, an alveolar bone formed with an analog insertion groove corresponding to the virtual digital analog, And a base block portion including the base block portion.

In the fourth step, the 3D digital library may include digital shape information of a plurality of scan bodies having standard information of the fixture and height information of the scan reference plane as selection items, and a plurality of It is preferable to include the digital outline information of the analogs.

Preferably, in the first step, a coupling reference plane is formed on a side surface of the digital scan body, the coupling reference plane being connected to each edge of the scan reference plane, the coupling reference plane indicating a coupling direction of the fixture and the digital scan body.

According to the above-described solution, the method of manufacturing a three-dimensional oral conform model using a digital scan body according to the present invention provides the following effects.

First, it is not a complicated process of acquiring a tone for the inside of the subject and arranging a prosthesis in the mouthpiece and then filling the impression material to fill the impression material. Instead, a three-dimensional oral image acquisition and a digital scan body / The oral conform model can be quickly and easily designed and manufactured by a simple image processing process of virtually arranging the image and removing the overlapping portion.

Second, by matching the virtual digital scan body and the virtual digital analog on the basis of the digital scan body image displayed on the 3D mouth image, it is possible to obtain an analog insertion groove in the oral conform model without distortion and flow of the sound and the prosthesis, And it is possible to flexibly cope with related regulation regulations and medical accidents by facilitating repetitive manufacturing in case of physical damage or loss based on digitized digital impression image.

Third, the digital scan body is easily replaced with a virtual digital scan body corresponding one-to-one through a three-dimensional digital library, and inserted into the gums and alveolar bone through a substituted virtual digital scan body, So that the analog insertion groove in the oral conform model can be precisely formed.

Fourth, since the digital analog corresponding to only the simple specification information such as the cross-sectional area and the length of the fixture can be selected through the 3D digital library, the position of the analog insertion groove in the oral conform model can be quickly set .

FIG. 1 is a flowchart illustrating a method of manufacturing a three-dimensional oral conform model using a digital scan body according to an exemplary embodiment of the present invention.
2 is a view illustrating a matching process of a digital scan body and a virtual digital scan body in a method of manufacturing a three-dimensional oral conform model using a digital scan body according to an embodiment of the present invention.
3 is a diagram illustrating a matching process of a virtual digital scan body and a virtual digital analog in a method of manufacturing a three-dimensional oral conform model using a digital scan body according to an exemplary embodiment of the present invention.
FIG. 4 and FIG. 5 are views showing a three-dimensional oral conform model prepared according to a method of manufacturing a three-dimensional oral conform model using a digital scan body according to an embodiment of the present invention.

Hereinafter, a method for manufacturing a 3D scan model of a digital scan body according to a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 is a flowchart illustrating a method of manufacturing a three-dimensional oral conform model using a digital scan body according to an exemplary embodiment of the present invention. FIG. 2 is a flowchart illustrating a method of manufacturing a three- dimensional oral conform model using a digital scan body according to an exemplary embodiment of the present invention. FIG. 3 is a flowchart illustrating a method of manufacturing a 3D oral conform model using a digital scan body according to an exemplary embodiment of the present invention. Referring to FIG. 3, FIGS. 4 and 5 are views illustrating an example of a three-dimensional oral conform model prepared according to a method of manufacturing a three-dimensional oral conform model using a digital scan body according to an embodiment of the present invention .

Here, the implant treatment refers to a procedure for replacing a lost tooth with an artificial prosthesis. The prosthesis includes a crown replacing a crown, a fixture replacing a root, and an abutment connecting a crown and a fixture.

In this case, it is preferable that the oral conform model is a model in which the shape of the subject within the oral cavity of the subject is represented by an embossed shape similar to a general impression model.

As shown in FIGS. 1 to 5, a 3D oral conform modeling method using a digital scan body according to an exemplary embodiment of the present invention includes the following steps.

First, a digital scan body having a scan reference plane, which is provided to correspond to a virtual digital scan body selected from a 3D digital library, is coupled to a fixture placed in the oral cavity of the subject.

In detail, when a CT image of the inside of the subject is acquired, the density and thickness of the alveolar bone at the implant placement position can be analyzed using the obtained CT image.

At this time, the fixture is set to have a sectional area in accordance with the type of tooth corresponding to the implant placement position, and a length suitable for the calculated implantation depth considering the cutting pressure, alveolar bone density and thickness according to the kind of the tooth And the direction of the placement can be set in consideration of the orientation of the abutment and the crown to be fixed to the fixture.

When standard information such as a cross-sectional area and a length of the fixture is set, perforations are formed in the alveolar bone corresponding to the implant placement position according to the placement direction, cross-sectional area, and length of the fixture, and a fixture Can be placed.

In the fixture, an outer surface of the fixture may be provided with a screw thread for increasing the coupling force with the alveolar bone. In the fixture, an engagement groove for surrounding the lower portion of the abutment is formed, A polygonal groove portion is formed which is engaged with the polygonal projection formed at the lower end of the butt.

The fixture is provided with a healing abutment for preventing the engagement groove from being closed when the gum is recovered, and for guiding the recovery shape of the gum into a form that can be brought into close contact with the upper surface of the abutment or the lower end of the crown. Lt; / RTI >

At this time, when the fixture and the healing abutment are coupled to the alveolar bone of the patient, the alveolar bone and the fixture have a predetermined waiting period for osseointegration of the alveolar bone and the fixture. After the waiting period, the alveolar bone and the bone- Subsequent procedures can be performed.

Here, if the osseointegration of the alveolar bone and the fixture is confirmed, the healing abutment is separated and the digital scan body is fastened.

At this time, the digital scan body has a length such that an upper portion of the digital scan body is exposed to the outside of the gum of the implant placement position in a state where the lower portion is coupled to the fixture, Respectively.

That is, the digital scan body has a shape similar to the abutment, and a scan reference plane is formed on an upper surface for accurate and easy scanning, and a polygonal protrusion coupled to a polygonal groove of the fixture is provided at a lower portion.

At this time, the digital scan body, the healing abutment, and the clearance abutment for the final prosthesis are equally provided in the lower shape except for the upper shape, and each has a portion inserted / coupled into the coupling groove of the fixture, And the polygonal protrusions to be inserted / joined into the polygonal groove portions of the culler are provided in the same shape.

Here, it is preferable that the polygonal protrusion is formed so that its outer surface is formed on the inner surface of the polygonal groove.

Accordingly, the digital scan body can be aligned with and coupled to the fixture in a predetermined direction, and the placement angle of the fixture can be grasped through the placement angle of the digital scan body.

Here, the scan reference plane may have a flat polygonal cross-section so that the position and direction of the digital scan body can be accurately measured when the scan scan image is acquired through the oral scan.

At this time, the scan reference plane may be formed on the upper side of the digital scan body. However, when the scan reference plane is formed on the upper surface of the digital scan body, the scan reference plane may be formed accurately without loss of image due to teeth, gums, Can be scanned and displayed on the three-dimensional oral image 10.

Here, the 3D digital library refers to a database including digital contour information for a plurality of scan bodies, each of the digital contour information is provided as three-dimensional vector data and can be displayed as a three-dimensional stereoscopic image, And can be actually manufactured.

Here, the virtual digital scan body 12 means that the digital outline information is displayed as a three-dimensional stereoscopic image, and the digital scan body means that the digital outline information is actually manufactured. The virtual digital scan body 12 of the display unit 12 may correspond to one digital scan body on a one-to-one basis.

Here, the digital scan body may be manufactured in a state of being manufactured so as to correspond to each virtual digital scan body 12. If one virtual digital scan body is selected, the digital scan body may be directly manufactured using the corresponding digital appearance information It is possible.

1 and 2, when the digital scan body is combined (s10), an oral scan image of the inside of the subject including the joint position of the digital scan body is obtained, A three-dimensional oral image 10 is acquired through a plurality of images (s20).

At this time, the oral scan image can be obtained for the entire inside of the oral cavity of the subject, and if necessary, it can be acquired for a part of the oral cavity of the subject, and the oral cavity including the engagement position of the digital scan body It is preferable to be obtained for all or part of the interior.

Here, the oral scan image may be acquired by moving along the inside of the mouth of a client through an oral scanner or the like, and may include the overall appearance of the oral cavity such as the crown of the tooth (the upper side of the teeth exposed to the outside of the gum) .

At this time, the three-dimensional oral image represents the three-dimensional three-dimensional image of the inside of the mouth and can be obtained using only the oral scan image. However, the difference between the actual oral cavity and the oral scan image due to image distortion during scanning is corrected It is preferable that the image is acquired through matching of the CT scan image and the oral scan image.

Here, the CT image may be acquired through radiological tomography and may include information about the crown of the tooth, the root (the root of the tooth disposed inside the gum), and the alveolar bone.

The CT image and the oral scan image may be image-aligned based on a crown image, which is a common part of the two images, and the three-dimensional oral image obtained through matching of the two images may be crown, root, alveolar bone, Include comprehensive information, but may include accurate information consistent with the actual oral cavity.

When the three-dimensional oral image 10 is acquired (s20), the virtual digital scan body 12 is matched to the digital scan body image 11 displayed in the three-dimensional oral image 10 s30).

Here, the digital scan body image 11 is an image of a portion corresponding to the digital scan body mounted in the oral cavity of the subject in the three-dimensional oral image 10.

In this case, the virtual digital scan body 12 indicates that the external information corresponding to the digital scan body is displayed as a three-dimensional image in the 3D digital library. Through the matching process, And can be displayed by replacing the digital scan body image 11.

Accordingly, the 3D digital image can be accurately displayed on the 3D oral image 10 from the digital scan body through the replaced virtual digital scan body to the portion inserted into the gum and alveolar bone.

In addition, the position of the virtual digital analog can be accurately determined as the fixture or the bottom of the digital scan body combined with the digital analog is accurately displayed in the three-dimensional oral image 10.

In addition, since one scan body is displayed as an image based on the same three-dimensional vector data through the 3D digital library and is actually manufactured, the digital scan body placed inside the mouth of the subject can be displayed on the three- It can be simply replaced with a corresponding virtual digital scan body, and the troublesome image processing process such as three-dimensionally scanning the outer shape of the real scan body can be eliminated.

In addition, the substituted virtual digital scan body has the same effect that the three-dimensional vector data of the real digital scan body is directly output to the positional information of the real digital scan body disposed in the oral cavity of the subject through matching with the real digital scan body image And can be displayed very accurately on a three-dimensional oral image on a real digital scan body fastened to a fixture without distortion due to scanning.

Here, the step of matching the virtual scan body 12 with the digital scan body image 11 may be performed as follows.

First, a plurality of alignment reference points 11b are selectively input to the scan reference plane 11a of the digital scan body image 11. At this time, the alignment reference point 11b may be calculated as the outermost or minutiae point of the scan reference plane 11a, or may be input directly by a practitioner or automatically through a three-dimensional analysis program.

Here, the scan reference planes 11a and 12a may have a polygonal cross-section, and in the case where the scan reference planes 11a and 12a have a square cross-section, image distortion according to a scanning angle may be easily restored.

The alignment reference point 12b of the virtual digital scan body 12 is aligned with the input alignment reference point 11b. At this time, the alignment reference point 12b of the virtual digital scan body 12 may be set to a position corresponding to the alignment reference point 11b of the digital scan body image 11.

That is, the alignment reference point 12b of the virtual digital scan body 12 can be calculated from the outermost point of the scan reference plane 12a to the feature point.

At this time, it is preferable that the alignment reference points 11b and 12b are set at three or more positions in each of the digital scan body image 11 and the virtual digital scan body 12, Matching is possible.

The virtual digital scan body 12 is three-dimensionally moved so that the alignment reference point 12b of the virtual digital scan body 12 is superimposed on the input alignment reference point 11b.

The alignment protrusions 11a and 12a of the digital scan body image 11 and the virtual digital scan body 12 are provided with alignment protrusions 11a and 12a to provide feature points for easy input and setting of the alignment reference points 11b and 12b. .

1 to 3, when the virtual digital scan bodies 12 are matched and fictitiously arranged (s30), the virtual digital scan body 12 is supplied with the fixture The virtual digital analogs 13 selected to correspond to the virtual digital analogs 13 are matched and arranged in virtual arrangement (s40).

Here, the 3D digital library refers to a database including digital appearance information for a plurality of analogs, and each of the digital appearance information is provided as three-dimensional vector data and can be displayed as a three-dimensional stereoscopic image. And can be converted into a real product.

In this case, the virtual digital analog 13 means that the digital outline information for one analog is displayed as a three-dimensional stereoscopic image, and the digital analog means a state in which the digital outline information is actually manufactured , And one virtual digital analog can correspond to one digital analog one-to-one.

Here, the analog is formed with the same engaging groove as that of the fixture at the upper portion to insert the lower portion of the digital scan body, and a polygonal groove portion where the polygonal protrusion of the digital scan body is coupled is formed at the lower portion of the engaging groove.

The fixture is provided to have the same cross-sectional area and depth as the fixture, and is provided on the outer surface of the fixture in a form in which threads formed for osseointegration with the alveolar bone are removed.

That is, the analogue corresponding to the fixture and the fixture are provided so that the cross-sectional area excluding the external thread, the length, the inner engaging groove, and the polygonal groove under the engaging groove are the same.

Of course, it is also possible to manufacture a fixture by adding a thread to the outer surface based on the analog digital appearance information provided in the 3D digital library.

The virtual digital analogue 13 may be arranged in the same direction as the fixture in such a manner that the polygonal protrusion 12d formed in the lower portion of the virtual digital scan body 12 is fitted to the polygonal groove 13d, , The position, direction and depth of the perforation in which the fixture is placed in the three-dimensional oral image 10 can be displayed.

At this time, when the digital impression image is obtained by displaying the position, the direction, and the depth of the perforation in the 3D mouth image, the oral conform model may be manufactured through the digital impression image.

In the oral conform model, an analog insertion groove corresponding to the virtual digital analog is formed, and the analog insertion groove may indicate a position and a direction of the perforation in a portion corresponding to the perforation where the fixture is placed.

In addition, the outer surface of the digital analog is provided in a flat shape with a thread removed, so that it can be easily attached to and detached from the analog insertion groove provided in the oral conform model.

Here, the virtual digital analogue 13 may be selected from the 3D digital library through standard information including the cross-sectional area, length, etc. of the fixture, and the virtual digital analogue 13 may be selected from the three- 10 in place of the fixture implanted in the mouth of the subject.

That is, when one fixture is selected, one virtual digital analog can be selected through the standard information of the fixture, and the position of the top surface of the fixture, the depth of the hole where the fixture is placed, Sectional area may be displayed in the three-dimensional oral image, and may be formed as an analog insertion groove in the manufacture of the oral conform model.

At this time, the virtual digital analog (10) in the three-dimensional oral image (10) through the molding information between the polygonal groove 13d of the virtual digital analog 13 and the polygonal protrusion 12d of the virtual digital scan body 12 13 can be determined.

Since the three-dimensional vector data of each of the virtual digital scan body 12 and the virtual digital analog 13 is constructed as a database through the three-dimensional digital library, It is possible to easily derive the combination information indicating the coupling relationship through the three-dimensional vector data.

In addition, the virtual digital analog 13 suitable for the virtual digital scan body 12 can be automatically and quickly placed virtually by the image processing program on the basis of the above-described formatting information.

As the virtual digital analog 13 corresponding to the fixture is matched and arranged in the lower part of the virtual digital scan body 12 virtually arranged in the 3D mouth image 10, The perforation in which the fixture is placed can be accurately and simply displayed on the three-dimensional oral image 10 based on the position, direction, and length of the fixture.

1 to 4, when the virtual digital analog 13 is virtually arranged (s40), the virtual digital analog 13 and the virtual digital scan body 12 Is obtained as a digital impression image 20, and the digital impression image 20 is three-dimensionally printed to produce a three-dimensional oral conform model (s50).

The removal of the portion corresponding to the virtual digital analog 13 and the virtual digital scan body 12 means that the portion occupied by the virtual digital scan body 12 in the 3D mouth image 10 is removed A portion corresponding to the joining groove / polygonal groove formed in the virtual digital analog 13 in the three-dimensional oral image 10 and a portion occupied by one of the virtual digital analogs 13 are removed Understanding is desirable.

That is, when the portion occupied by the virtual digital scan body 12 in the three-dimensional oral image 10 and the portion corresponding to the engaging groove / polygonal groove formed in the virtual digital analog 13 are removed, Dimensional vector data of the three-dimensional oral image 10 and the three-dimensional vector data of the virtual digital scan body 12 to calculate coordinates of the superimposed three-dimensional vector data, (10), the digital impression image (20) can be obtained.

Here, the digital impression image 20 has the shape of the peripheral teeth 2, the gums 3, and the alveolar bone 4 of the lower part of the gum, and the opening 6 of the gum through which the digital scan body is inserted And an engaging groove and a polygonal groove formed inside the fixture placed in the alveolar bone can be displayed.

At this time, if a 3D oral conform model is manufactured based on the acquired digital impression image 20, the digital scan body is removed from the oral cavity of the subject and the digital analog corresponding to the fixture is inserted, Digital analog can be integrally formed.

Here, the digital scan body or the abutment may be coupled through the coupling groove and the polygonal groove of the digital analog.

In addition, when the portion occupied by the virtual digital scan body 12 in the three-dimensional oral image 10 and the portion corresponding to the entire virtual digital analog 13 are removed, Dimensional vector data, the three-dimensional vector data of the virtual digital analog 13 and the virtual digital scan body 12 are compared and the coordinates of the superimposed three-dimensional vector data are calculated. Then, The digital impression image 20 can be obtained by removing it from the oral image 10.

At this time, the obtained digital impression image 20 is formed with the shape of the peripheral teeth 2, the gums 3, and the alveolar bone 4 of the lower portion of the gum, and the analog insertion grooves 5 ), And the opening 6 of the gum through which the digital scan body passes can be displayed.

Here, the analog insertion groove 5 is formed to correspond to the perforations in which the fixture is inserted, indicating the position and direction of perforation, and can be understood as a form in which the screw thread of the fixture is removed.

The digital impression image 20 may be formed by a three-dimensional printer or the like, and a shape in which the scan body and the fixture are removed from the oral cavity of the subject can be manufactured as a three-dimensional oral conform model.

As described above, the three-dimensional oral conform model acquires the inside of the mouth of the person to be examined as a sound, and the impression material is poured in a state where a separate prosthesis corresponding to the scan body and the fixture is disposed inside the mouth, Can be obtained very simply and precisely, as opposed to obtaining an impression model of < RTI ID = 0.0 >

That is, the three-dimensional oral conform model for the inside of the mouth of the subject can be used to acquire a three-dimensional oral image of the inside of the oral cavity of the subject, rather than a complicated process such as acquiring a sound pattern, , A virtual digital scan body, and a virtual digital analog can be easily designed and manufactured by a simple image processing process in which overlapping portions are removed.

Further, by matching the virtual digital analog to the virtual digital scan body matched with the digital scan body image displayed on the three-dimensional oral image, the position of the fixture hard to measure by the oral scan or the CT scan can be accurately grasped, A three-dimensional oral conform model matching the inside of the subject's mouth without deformation and flow of the sound and the prosthesis that can be generated upon filling of the subject can be obtained.

In addition, since a three-dimensional oral conform model can be manufactured at any time based on the digitized digital impression image even if the actual three-dimensional oral conform model is not directly stored, it is easy to repetitively manufacture in case of physical damage or loss, And more flexible coping with medical accidents is possible.

When the oral conform model is manufactured, the analog insertion groove formed in the oral conform model is formed corresponding to the volume and position of the virtual digital analog, and the analog insertion groove is formed in the analog insertion groove so as to correspond to the virtual digital analog The manufactured digital analog can be inserted.

At this time, the position and orientation of the fixture placed in the alveolar bone of the subject through the digital analog can be analyzed.

In the digital analog, a coupling groove and a polygonal groove, which are the same as the fixture, are formed, and a healing abutment, a digital scan body, a custom abutment, and the like can be combined with the digital analog embedded in the oral conform model And the crown can be coupled through the custom abutment.

Accordingly, it is possible to easily correct the crown, abutment, and other prosthesis based on the oral conform model at the stage before the crown is finally placed in the oral cavity of the subject.

Of course, in the case of acquiring the digital impression image by removing only the virtual digital scan body among the virtual digital scan body and the virtual digital analog arranged in the three-dimensional oral image, the digital analogue The coupling groove and the polygonal groove may be formed in the digital analog of the oral conform model.

Accordingly, even if a separate digital analog is not actually manufactured, the prosthesis such as abutment, crown, and the like can be coupled to the oral conform model, and the correction work of the crown or abutment can be easily performed.

4 to 5, in step s50 in which the three-dimensional oral conform model is manufactured, the oral conform model 30 is formed so that the analog insertion groove 5 is exposed, And the base block portion 30b including the alveolar bone 4 in which the analog insertion groove 5 is formed and the periphery of the positioning position of the digital scan body, Do.

In detail, the digital impression image 20 includes a first division surface 7 set along the top surface of the virtual digital analog and a second division surface 8a 8b extending upward along both sides of the positioning position of the digital scan body ). ≪ / RTI >

At this time, the divided digital impression images are three-dimensionally printed, and a partial block portion 30a corresponding to the portion of the gum where the opening 6 into which the digital scan body is inserted is formed, and the alveolar bone 4 and the base block portion 30b including the portion excluding the gum portion can be manufactured.

That is, the digital impression image 20 is displayed such that the analog insertion groove 5 and the opening 6 of the gum are displayed as the virtual digital analog and the virtual digital scan body are removed from the three-dimensional oral image 10 , And may have the same three-dimensional coordinate system as the three-dimensional oral image 10.

At this time, if the first division plane 7 is set along the upper surface of the virtual digital analog 13 arranged in the three-dimensional oral image 10, the three-dimensional oral image The first divisional plane 7 can be set at the same position as the first divisional plane 10.

The first dividing surface 7 of the digital impression image 20 may include a top surface of the analog insertion groove 5 and the first dividing surface 7 may be formed of the gum 3, Extends from the front side to the rear side surface of the analog insertion groove 4 and extends to the left and right outlines of the rim of the analog insertion groove 5.

At this time, the second division surfaces 8a and 8b can be set to extend in the vertical direction from the left and right of the placement position of the digital scan body, and the space between the inside of the peripheral teeth 2 and the space between the analog insertion grooves 5 It is preferable to set it in the vertical direction.

Herein, the first division surface 7 and the second division surface 8a and 8b are formed by connecting the digital impression image 20 to the gum where the opening 6 through which the digital scan body passes, It can be divided into the rest of the oral cavity except for the gums and abutment.

Here, the divided digital impression images are each three-dimensionally printed, so that the partial block portion 30a and the base block portion 30b can be manufactured. Accordingly, the three-dimensional oral conform model 30 can be separated so that the upper end of the analog insertion groove 5 is exposed, and the upper end of the analog insertion groove 5 can be assembled so as to be covered by the gum.

Therefore, not only the shape of the analog insertion groove 5 can be more clearly displayed in the manufactured three-dimensional oral conform model 30, but also the opening through which the digital scan body is penetrated by the restoration of the gum, Even when the cross-sectional area of the groove 5 is narrower than the cross-sectional area of the groove 5, the oral conform model 30 can be separated and the digital analog can be easily inserted into the analog insertion groove.

After the insertion of the digital analog, the divided oral conform models 30a and 30b are assembled and the prosthesis such as abutment and crown is coupled through the opening 6 formed in the gum, Can be expressed.

Meanwhile, in the step (s40), the 3D digital library includes digital shape information of a plurality of scan bodies having as a selection item the standard information of the fixture and the height information of the scan reference plane, It is preferable to include a plurality of pieces of analog digital appearance information having standard information as a selection item.

In detail, the 3D digital library includes digital contour information on the scan body and digital contour information on the analog body, and a digital scan body and a virtual digital scan body corresponding to each other through the digital contour information of the scan body are manufactured Can be displayed as a three-dimensional image.

The digital analog and the virtual digital analog corresponding to each other through the digital appearance information for the analog can be manufactured and displayed as a three-dimensional image.

At this time, the digital contour information of the scan body may be classified according to the height information of the scan reference plane according to the cross-sectional area of the fixture, the peripheral teeth, and the gum surface height among the standard information of the fixture.

That is, when the cross-sectional area of the fixture is determined, the bottom shape of the digital scan body and the cross-sectional area of the polygonal protrusion can be determined to be a size that can be inserted into the coupling groove of the fixture. When the height of the peripheral teeth and the surface of the gum are determined, the upper length of the digital scan body may be determined so that the scan reference surface protrudes from the peripheral teeth and the gum surface.

At this time, the 3D digital library includes digital contour information of a plurality of scan bodies provided according to the size of the cross-sectional area of the fixture and the height of the scan reference plane, and when the cross-sectional size and the height of the scan reference plane are determined, .

Accordingly, a digital scan body suitable for intraoral scanning of the subject can be quickly and accurately provided.

The analog digital shape information may be classified according to the cross-sectional area and the length of the fixture among the standard information of the fixture.

That is, if the cross-sectional area of the fixture is determined, the cross-sectional area of the digital analog can be determined, and if the length of the fixture is determined, the length of the digital analog can be determined.

At this time, the 3D digital library may include a plurality of analog digital contour information provided according to the cross-sectional area and the length of the fixture, so that the cross-sectional area and length of the fixture may be selected as one digital analog.

Accordingly, if only the cross-sectional area and the length of the fixture are determined without the troublesome process of directly scanning the external shape of the fixture and displaying the fixture on the 3D mouth image, a digital analog capable of replacing the fixture is selected, The image processing process for setting the position of the analog insertion groove can be performed more quickly.

Meanwhile, in step s10, when the digital scan body is coupled, a coupling reference plane is formed on a side surface of the digital scan body, the coupling reference plane being connected to each edge of the scan reference plane and indicating a direction in which the fixture and the digital scan body are coupled. .

In detail, referring to the virtual digital scan body 12 shown in the 3D mouth image 10, the scan reference plane 12a is formed on the upper surface of the virtual digital scan body 12, The engaging reference surface 12c is connected along the respective rims of the engaging surface 12c.

At this time, the coupling reference plane 12c may be provided parallel to the outer surfaces 12e of the polygonal protrusion 12d. Since each of the outer surfaces 12e of the polygonal protrusion 12d is provided in parallel with the inner surface of the polygonal groove formed in the fixture or the digital analog, the placement of the fixture or the digital analog via the coupling reference plane 12c The angle can be easily grasped.

Accordingly, when the digital analog is inserted into the three-dimensional oral conform model and the digital scan body is coupled to the digital analog through the opening, the direction of the polygonal groove of the digital analog is aligned with the coupling reference plane of the digital scan body It can be easily grasped.

In other words, the direction of the polygonal groove of the fixture placed in the oral cavity of the subject can be easily grasped by referring to the coupling reference plane of the digital scan body, and the posterior fixture such as the abutment is fastened to the fixture The polygonal protrusion of the final prosthesis can be easily inserted into the polygonal groove of the fixture.

Therefore, excessive force can be prevented from being applied to the fixture due to misalignment of the combining direction when the abutment and the fixture are engaged, and secure restoration of the prosthesis is possible.

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

10: 3D oral image 20: Digital impression image
30: Three-dimensional oral conform model 2: Peripheral teeth
3: Gum 4: Alveolar bone
5: analog insertion groove 6: aperture

Claims (5)

A first step of combining a fixture placed inside a mouth of a client with a digital scan body having a scan reference plane corresponding to a virtual digital scan body selected from a 3D digital library;
A second step of acquiring an oral scan image of the inside of the subject including the engagement position of the digital scan body, and acquiring a three-dimensional oral image through the oral scan image;
A third step in which the virtual digital scan body is matched to the digital scan body image displayed in the three-dimensional oral image, and the virtual scan body is fictitiously arranged;
A fourth step of matching virtual digital analogs selected to correspond to the fixture from the 3D digital library to the virtually arranged virtual digital scan bodies so as to be arranged in a virtual manner; And
A fifth step in which a portion corresponding to the virtual digital analog and the virtual digital scan body is removed from the three-dimensional oral image to obtain a digital impression image, and the digital impression image is three-dimensionally printed to produce a three-dimensional oral conform model A method for manufacturing a three-dimensional oral conform model using a digital scan body. The method according to claim 1,
The third step includes a step of selecting and inputting a plurality of alignment reference points on a scan reference plane of the digital scan body image,
Further comprising aligning the alignment reference point of the virtual digital scan body with the alignment reference point so that the alignment reference point of the virtual digital scan body overlaps the alignment reference point of the virtual digital scan body. The method according to claim 1,
In the fifth step,
The oral conform model is divided into a partial block portion corresponding to a position where the digital scan body is placed and a base block portion including an alveolar bone formed with an analog insertion groove corresponding to the virtual digital analog and a peripheral portion of the positioning position of the digital scan body Wherein the method comprises the steps of: preparing a three-dimensional oral conform model using a digital scan body; The method according to claim 1,
In the fourth step, the 3D digital library includes digital shape information of a plurality of scan bodies having the standard information of the fixture and height information of the scan reference plane as selection items, and a plurality of analog Wherein the digital contour model comprises a digital contour information of the digital scan body. The method according to claim 1,
In the first step, a coupling reference plane is formed on a side surface of the digital scan body, the coupling reference plane being connected to each edge of the scan reference plane and indicating a direction of coupling between the fixture and the digital scan body. 3 - D Oral Confirm Model Manufacturing Method.
KR1020150075115A 2015-05-28 2015-05-28 manufacturing method for 3D oral confirm model using digital scan body KR101631258B1 (en)

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