KR101631256B1 - method for manufacturing surgical guide and crown in mouth for dental implant using tray - Google Patents

Abstract

The present invention provides a method for manufacturing a surgical guide and a crown for dental implant using a tray, capable of exactly acquiring an image of an oral cavity to improve the precision of the implant. The method includes: a first step of coupling a tray, provided at a lateral side thereof with a plurality of reference markers and formed on in an inner surface thereof with teeth grooves, in which an impression material is injected in the internal surface of the tray, to an oral cavity and acquiring an impression having a shape matching groove corresponding to a target part for tooth implant; a second step of acquiring a primary scanning image by scanning the tray having an occlusal base stacked on an outer surface thereof, an adjusted thickness, and a set occlusal height, acquiring a secondary scanning image by oral-scanning an occlusal state of upper and lower incisors having the tray mounted therein, preliminary matching the secondary scanning image with the primary scanning image, acquiring an integrated scanning image on which a vertical dimension is reflected by reversing the primary scanning image so that a shape-matching image is formed in 3D, and acquiring a computerized tomography (CT) image by CT-photographing the upper and lower incisors; a third step of overlapping the integrated scanning image having the vertical dimension with the CT image based on a reference marker and performing a main matching on a difference map to output a shape-matching degree between the images; and a fourth step of setting the height of the crown based on the 3D occlusal guide image, and manufacturing the surgical guide including a fixing groove shape-matched with an inner shape of a mouth of the examinee and a guide hole formed according to the location for fixture implant corresponding to the set crown.

Description

TECHNICAL FIELD [0001] The present invention relates to a method of manufacturing a surgical guide and a crown,

The present invention relates to a surge guide and a crown manufacturing method for performing a dental implant treatment using a tray, and more particularly, to a surge arrester and a crown manufacturing method for a dental implant treatment using a tray, Guide and a method for manufacturing a crown.

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.

In detail, in normal prostheses or dentures, the surrounding teeth and bones are damaged over time, but the implants can prevent damage to surrounding tooth tissues and can be used stably because there is no secondary tooth decay factor. In addition, since the implant has the same structure as the natural teeth, there is no pain or foreign body sensation of the gums, and it is advantageous that the implant can be used semi-permanently.

In the meantime, the implant treatment is performed by forming a perforation in the alveolar bone using a drill and placing the fixture in the perforation. Procedures for forming the perforation and implanting the fixture are different for each patient. This is because the position, depth, and orientation of the implant should be determined in consideration of various factors such as the patient's tooth condition, the position of the tooth requiring the implant treatment, and the condition of the alveolar bone of the patient.

As a result, the drilling operation for alveolar bone drilling has a difficulty in accurately measuring the depth and direction of the operator during the course of the operation as well as for the novice user. Further, in the case of a beginner who is not experienced in operation, It is very difficult to measure the depth to be treated.

Further, when forming the perforations in the alveolar bone, the practitioner applies the force to the drill to perform the drilling operation, and it is difficult to determine to what extent the drilling operation has been performed. Furthermore, drill insertion above a certain depth can cause serious problems that damage the nerve of the alveolar bone.

On the other hand, when the drilling operation is completed before reaching a certain depth, the depth of the drilled hole is shallow, and excessive force is required to fix the fixture. In addition, there was a problem that the screw around the perforation was damaged or the fixture could not be fixed perfectly, so that it was re-operated afterwards.

Accordingly, an auxiliary device called a surgical guide is used to grasp the exact position and direction to perform the drilling operation.

1 is a flowchart showing a conventional method of manufacturing a surge guide.

As shown in FIG. 1, a conventional surge guide is manufactured through the following process. First, a three-dimensional image of the inside of the subject's mouth is obtained through a CT scan, and a three-dimensional external shape image of the inside of the subject's mouth is obtained through an oral scan (s1).

Here, the three-dimensional image through the CT scan shows the shape of the crown (a part of the tooth revealed outside the gum) and the root (the part joined with the alveolar bone in the gum), and the shape of the alveolar bone and the bone density of the crown, root and alveolar bone Information.

In addition, the three-dimensional external shape image through the oral scan includes information on the shape of the crown and the gums in the oral cavity.

Then, when each image is acquired, the two images are matched with each other based on the intraoral point set by the practitioner, such as the singularity of the tooth (s2). Subsequently, an implant treatment plan is established through the image-matched result (s3), and a surge guide capable of guiding the treatment according to the treatment plan is manufactured (s4).

At this time, the surgeon guide for the procedure guide should be prepared by adding the experience of the practitioner along with various anatomical treatment conditions such as the thickness of the gum, the alveolar bone distribution, the position of the subject to be treated. For this purpose, it is preferable to use the external appearance data of the oral tissues together rather than to use only the direct data such as CT data.

In addition, the three-dimensional external shape image is obtained by moving the oral scanner along the oral cavity of the subject and combining the scanned information. However, since the curvature of the dentition may appear distorted inside the oral cavity during the process of combining the scanned information, it is necessary to correct the image. In this way, in order to compensate for the insufficient information in each of the images and to correct the distorted information, the image matching step s2 is indispensable.

At this time, in order for the three-dimensional image and the three-dimensional outer shape image to be image-matched, a crown region, which is a common portion of the two images, is required. However, in the case of the edentulous patient, since there is no crown area itself, a common part between the three-dimensional image and the three-dimensional outer shape image hardly exists. As a result, there is a problem in that the image matching between the respective images is difficult and even if the matching is performed, the inaccurate information is provided.

Furthermore, when the mandible is edentulous in the inside of the oral cavity, since the shape of the mandible is not clearly specified because the amount of the gums is large and the motive tissue such as the tongue is distributed and the fluidity of the tissue is high, it is difficult to obtain the external shape through the oral scan.

In addition, even if the reference marker is attached to the inside of the mouth for use as a reference point of matching, there is a problem that the reference marker is not substantially fixed due to the fluidity of the tissue. Accordingly, in the image matching step, even if the reference markers are matched with the reference mark, the reliability of the obtained image is degraded.

On the other hand, when designing the crown of the implant to replace the lost tooth in the mouth of the client, the height, width, chewing surface, and chewing direction of the crown are calculated based on the information of the tooth remaining around the lost tooth. However, in the case of edentulous patients, there is no peripheral tooth to be compared. Therefore, the crown was designed through the experience of the practitioner or the existing procedure data.

Therefore, when the manufactured crown is placed inside the oral cavity, it is often the case that the treated person feels uncomfortable. In addition, since a plurality of crowns have to be manufactured and placed repeatedly to compensate for this, there is an increase in the cost of the procedure, an increase in the duration of the implant treatment, and inconvenience to the physician.

Korean Patent No. 10-0977911

The object of the present invention is to provide a method of manufacturing a surge guide and a crown for a dental implant treatment using a tray in which precision of an implant procedure is improved by accurately acquiring an image of an inside of a mouth of a patient.

In order to solve the above-described problems, the present invention is characterized in that a plurality of reference markers are attached to a side surface thereof and a tray having a dentition groove in which an impression material is injected on an inner surface thereof is coupled to the inside of a mouth of a client, A first step of making an impression; A first scanning image is obtained by scanning a tray on which an occlusal height is set by stacking an occlusal base on the outer surface and adjusting the thickness of the occlusal base, and a second scanning image is obtained by orally scanning the occlusal state of the upper and lower males provided in the tray, A second step of acquiring an integrated scanning image in which vertical concavity is considered, inverting the shape of the mold concave image from the primary scanning image to acquire a CT image by capturing a CT image of the upper and lower axes; A third step of obtaining a three-dimensional occlusion guide image based on the combined scan image and the CT image in which the vertical height is considered based on the reference marker, and a deviation map outputting the degree of fit between the images; And a guide groove formed along the fixture mounting position corresponding to the set crown, wherein the guide groove is formed in the inner groove of the mouth of the subject and the height of the crown is set based on the 3D- And a fourth step of manufacturing the crown and the crown of the crown.

Here, in the second step, the occlusion height is calculated according to the tender sensitivity of the subject while the tray is installed, and based on the chewing shake of the opposed tooth displayed on the upper surface of the occlusion base at the occlusion of the upper and lower males And in the fourth step, the crown is designed to correspond to an interval between the upper and lower jaws spaced apart corresponding to the occlusion height based on the three-dimensional occlusion guide image.

Further, in the second step, The step of erasing the image excluding the mold recess inner surface profile image and the reference marker image from the primary scanning image and inverting the image so that the mold recess inner surface profile image is solidified to compensate for the relative positional relationship of the reference marker image .

Furthermore, in the second step, when the combined scanning image in which the vertical height is considered and the CT image are superimposed on the reference marker as a reference, and in a matching with the deviation map outputting the degree of fit between the respective images, Setting a common portion of the integrated scanning image and the CT image in consideration as the comparison region, and correcting each image so that the uppermost portion and the outermost portion of the comparison region coincide with each other in the overlapped image Do.

Meanwhile, in the third step, the shape and the arrangement state of the crown are preferably set on the basis of the three-dimensional occlusion guide image including the arrangement of the opposing teeth obtained from the secondary scanning image and the chewing surface information .

Through the above-mentioned solution, the surge guide and crown manufacturing method for the dental implant treatment using the tray according to the present invention provides the following effects.

First, since the information for designing and manufacturing the surge guide and the implant prosthesis can be provided at the same time through the matching between the images obtained in correspondence with the part to be implanted by the physician, the number of visits of the physician and the procedure of the operator are significantly shortened An implant-based technology device capable of completing fixture placement and abutment / crown installation in a short period of time can be provided.

Second, even in the case of a physician who does not have basic information about the inside of the oral cavity, the impression preparation process for establishing the implant treatment plan is performed in such a manner that the impression material is filled in the dentition groove of the tray, And a reference marker is attached to the solid outer surface of the tray to acquire an image, so that a matching reference position between the obtained images can be clarified. Thus, the precision of the surgeon guide and prosthesis, which is designed and manufactured based on the three-dimensional occlusion guide image obtained through the registration of each image, is improved, so that the reliability of the implant procedure can be remarkably improved.

Third, the upper surface of the occlusion base stacked on the outer surface of the tray engaging with the opposing teeth is cut to obtain a simple and accurate vertical height value by adjusting the occlusion height to allow the recipient to feel comfortable, So that the satisfaction of the procedure can be remarkably improved.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a flow chart illustrating a conventional method of manufacturing a surge guide. FIG.
FIG. 2 is a flowchart illustrating a method of manufacturing a surge guide and a crown for dental implant treatment according to an embodiment of the present invention. Referring to FIG.
FIGS. 3A and 3B are views illustrating an outer surface and an inner surface of a tray on which an image is formed according to an embodiment of the present invention; FIG.
FIG. 4 is an exemplary view showing an occlusion state of upper and lower malpositions provided with a tray on which an occlusion height is set according to an embodiment of the present invention; FIG.
5A and 5B are views illustrating an integrated scanning image in which a vertical height is considered according to an exemplary embodiment of the present invention.
FIGS. 6A and 6B are views illustrating a process of inverting a die groove according to an embodiment of the present invention to solidify the die groove. FIG.
FIG. 7 is an exemplary view showing an image of a three-dimensional occlusion guide according to an embodiment of the present invention; FIG.
8 is an exemplary view showing a design image of a surge guide according to an embodiment of the present invention;

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a method for manufacturing a surge guide and a crown for a dental implant using a tray according to a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.

FIG. 2 is a flowchart illustrating a method of manufacturing a surge guide and a crown for dental implant treatment according to an embodiment of the present invention. Referring to FIG. 3A and 3B are views showing an outer surface and an inner surface of a tray on which an impression is made according to an embodiment of the present invention. Fig. 8 is an illustration showing an occlusion state of upper and lower malleus. 5A and 5B are views illustrating an integrated scanning image in which a vertical height is considered according to an embodiment of the present invention. FIGS. 6A and 6B illustrate an integrated scanning image according to an embodiment of the present invention, FIG. FIG. 7 is an exemplary view showing an image of a three-dimensional occlusion guide according to an embodiment of the present invention, and FIG. 8 is an exemplary view illustrating an image of a design of a surge guide according to an embodiment of the present invention.

In the meantime, the dental implant treatment is performed by forming a hole in the alveolar bone using a drill, and placing the fixture in the hole. At this time, an auxiliary device called a surgical guide is used so as to grasp the exact position and direction to perform the drilling operation.

That is, if an implant treatment plan is established according to the state of the inside of the mouth of the patient, the surge guide is manufactured so that the surgeon can guide the established treatment plan and guide the direction or depth of the drilling or fixture placement can do.

As shown in FIGS. 2 to 8, a method for manufacturing a surge guide and a crown for a dental implant using a tray according to an embodiment of the present invention is performed as follows. At this time, the surge guide and the crown manufacturing method for the dental implant treatment can be applied to the implant treatment of a patient having at least one of the maxillary and mandibular edentulars.

First, a plurality of reference markers 40 are attached to a side surface of the tray 20 and a tray 20 having a tooth groove 21 into which an impression material 22 is injected is coupled to an inner surface of the patient's mouth. The impression on which the mold groove 23 is formed is obtained (s100). Here, it is preferable that the tooth placement target portion is a portion to perform the implant treatment due to the loss of natural teeth in the maxilla or mandible.

In detail, the tray 20 is formed in a shape corresponding to the dentition in the oral cavity, and an impression material 22 such as alginate, silicone or rubber is placed on the surface facing the tooth placement target portion, Place it between mandibles. When the pressure is applied so that the upper and lower jaws are interlocked with each other, the impression formed on the gel impression material 22, in which the shape of the tooth to be placed corresponds to the shape of the groove 23, can be obtained .

At this time, a tooth groove 21 is formed along the edge of at least one of the upper surface and the lower surface of the tray 20 so as to prevent the impression material 22 from being pushed outward by the pressure of the upper and lower jaws . Specifically, the teeth groove 21 has a side extending to a predetermined height along the rim of the tray 20 so that the impression material 22 is received therein. At this time, it is preferable that the side surface is extended to a height that does not interfere with the peripheral gingival portion, for example, the roof of the mouth, while accommodating a sufficient amount of the impression material to allow the impression to be clearly taken when the impression is made on the tooth placement target portion.

That is, since the impression material 22 is filled into the bottom surface and the side surface of the tooth groove 21 and prevented from leaking to the outside, the impression of the inside of the mouth of the subject can be more clearly seen. Accordingly, since the accuracy of the image obtained by scanning the tray 20 is improved, the reliability of the implant treatment plan designed through the image can be remarkably improved.

Although not shown in the drawing, a handle is formed on the outer side of the tray 20 so that the practitioner can grip the tray 20 so that the tray 20 can be moved and installed inside the mouth of the patient. Here, it is preferable that the handle portion extends from the lateral side of the tooth groove 21 so as not to interfere with the occlusion of the upper and lower teeth.

In addition, a plurality of reference markers 40 may be attached to the outside of the tray 20. In detail, the reference marker 40 may be attached as a matching reference for matching between the images obtained for the implant procedure, preferably in a plurality of three or more places. That is, as the matching reference object among the images increases in the matching step, the degree of association between the respective images can be remarkably improved, so that the reliability of the guide image obtained through the matching can be remarkably improved.

Here, the reference marker 40 may have a predetermined volume such as a cylinder or a polygonal column. At this time, either one of the upper surface and the lower surface facing each other may be attached to the outside of the tray 20, and the other surface thereof may be used as a matching reference at the matching. Here, the reference marker 40 may be formed of a radiopaque material so that the image of the reference marker 40 is displayed on the CT image 314 as well as on the scanning image.

Meanwhile, the reference marker 40 may be directly attached to the inside of the mouth of the subject, but may be attached to the mouth of the tray 20, which is pulled so as to form the mold groove 23 in correspondence with the tooth- It is preferable to adhere to the outside.

In detail, in a edentulous patient, since the gum tissue of the tooth placement part is soft and fluidity is high, the reference marker 40 is not substantially fixed and flows even though it is attached. As a result, the reference markers 40 images displayed between the images can not be formed at the same position, which lowers the reliability as a matching reference.

In order to solve this problem, the reference markers 40 are attached to the outside of the tray 20 on which the mold recesses 23 corresponding to the teeth to be placed are formed. That is, since the reference markers 40 are attached to the outside of the tray 20 formed of a rigid material, the movement of the reference markers 40 is prevented, so that the positions of the images of the reference markers 40 displayed between the images can be substantially matched. As a result, the degree of association between the reference markers 40 and the images matched to the reference markers is improved, and the accuracy and reliability of the surge arrays and prostheses designed from the images can be remarkably improved.

At this time, the reference markers 40 do not limit the attachment position of the tray 20 if it is outside the tray 20. However, the reference markers 40 may be provided on the side of the tray 20 except for the teeth area of the tooth- Lt; / RTI > At this time, the side surface of the tray 20 is preferably the same as the outer surface of the tooth groove 21.

Thus, it is possible to prevent the crown (c) design from being disturbed by the image of the reference marker 40 when designing the crown (c) through the three-dimensional occlusion guide image 315 obtained later. Here, the tooth region is a region in which a natural tooth is disappeared and substantially restrained by the prosthesis, and is understood as a region corresponding to a top end of the alveolar ridge.

On the other hand, an occlusal base 90 set at an occlusal height corresponding to the opposed tooth t is stacked on the outside of the tray 20 on which the impression with the mold recess 23 formed. The primary scanning image 311a is obtained by scanning the outer surface and the inner surface of the tray 20 on which the occlusion base 90 is stacked and the upper and lower jaws, To obtain the secondary scanning image 312. [ The primary scanning image 311a and the secondary scanning image 312 are preliminarily matched so that the image of the mold recess 23 is inverted from the primary scanning image 311a to be solidified, And acquires the scanning image 313. Then, CT images of the upper and lower mandibles are acquired to acquire a CT image 314 (s200).

Here, the occlusion refers to the contact of the maxillary and mandibular teeth when the mouth is closed. In the present invention, the contact state between the occlusion base 90 of the tray 20 and the opposing tooth t thereof . The spaced-apart state is preferably understood as a state in which a predetermined gap is formed in the vertical direction between the teeth of the upper and lower teeth by opening their mouths.

In detail, the occlusion base 90 is provided with the tray 20 on the tooth placement part, and the upper surface of the occlusion base 90 has a thickness corresponding to the space between the opposing tooth t and the outer side of the tray 20 Can be stacked. At this time, the occlusion base 90 may be made of a material which can easily change its shape by a pressing force or a cutting force while maintaining a predetermined shape such as wax or the like, so that the thickness can be selectively controlled according to the sensitivity of the subject.

The thickness of the occlusion base 90 is adjusted in accordance with the feeling of tactile sensation experienced by the physician during occlusion of the upper and lower malleus in a state where the tray 20 on which the occlusion base 90 is stacked is installed on the tooth placement target portion It is possible to set an appropriate occlusal height for the person to be treated.

Specifically, when the tray 20 on which the occlusion base 90 is stacked on the outer side is engaged in a state where the tray 20 is placed on the tooth placement target portion, the upper surface of the occlusion base 90 corresponds to the end of the opposing tooth t A chewing gum is formed. The occlusion height can be set by repeating the process of cutting the upper surface of the occlusion base 90 in accordance with the depth of the chewing gum to adjust the thickness of the occlusion base 90 so that the patient can feel comfortable.

Furthermore, since the occlusion height is calculated according to the mental sensitivity sensed by the subject person with the diagnosis of the practitioner, it can be calculated to maximize the satisfaction of the procedure without imposing a burden on the jaw joint of the subject. Here, the mastic sensitivity may be determined by direct expression of the physician, and may be determined by measuring electrical and chemical warfare signals around the jaw joint and jaw muscles.

In addition, it is possible to set a proper occlusal height to allow the wearer to feel comfort by repeating the process of cutting the upper surface after stacking the occlusion base 90 thicker than the expected occlusion height to facilitate the adjustment of the thickness of the occlusion base 90.

The first scanning image 311a is obtained by scanning the outer surface and the inner surface of the tray 20 on which the impression with the mold recess 23 on the inner side is formed and a plurality of reference markers 40 are attached to the side surface, do.

The tray 20 having the mold recesses 23 formed on the inner surface thereof and the occlusion base 90 on the outer surface thereof is adjusted to a predetermined occlusion height is installed inside the mouth of the patient. That is, since the mold groove 23 is fitted to the tooth placement target portion, the occlusion base 90 can be arranged to be engaged with the confrontation tooth t.

Then, the upper and lower teeth are interlocked with the tray 20, and the second scanning image 312 is acquired by orbital scan, and the CT image is obtained by capturing the CT image 314.

It is preferable that the primary scanning image 311a and the secondary scanning image 312 are preliminarily matched. At this time, the secondary scanning image 312 is scanned with the orthoscopic scanning image in the occlusion state of the upper and lower males of the subject who is provided with the tray 20, and the contour of the facing tooth t And further includes a scanned and spaced-apart scanning image.

In detail, the occlusion scanning image may obtain three-dimensional contour information in a state where the opposing tooth t and the occlusion base 90 are in contact with each other in the occlusion state of the upper and lower males. Here, the three-dimensional outer shape information in the touched state is preferably understood as a state in which the occlusion base 90 and the opposing tooth t are engaged and a shape of a gingival tooth on the opposing tooth t.

In addition, the spacing scanning image may obtain three-dimensional contour information of the contour tooth (t) in a state of being separated from the upper and lower contour. Here, the three-dimensional contour information of the contour tooth (t) may include the contour tooth (t), its gums, the shape of the chewing surface of each tooth, the placement relationship, and the like.

At this time, it is possible to automatically preliminarily match the superimposed secondary scanning image 312 and the primary scanning image 311a, and to image the image of the mold recess 23 from the primary scanning image 311a And obtains the integrated scanning image 313 in which the vertical height is considered.

In detail, the secondary scanning image 312 includes three-dimensional contour information of each of the occlusion scanning image and the distance scanning image, and a predetermined matching reference point is imaged and displayed on the imaging device. Here, the predetermined matching reference point is preferably understood as a common part between the respective scanning images. For example, between the images of the confrontation tooth (t), any specified point of the tooth may be a common part. In addition, the reference markers 40 may be a common part of the tray 20 between the images of the tray 20.

The primary scanning image 311a and the secondary scanning image 312 are superimposed via a computer-based imaging device. That is, the outer shape information obtained by scanning the inner and outer surfaces of the tray 20 and the outer shape information in a state where the tray 20 and the opposing teeth t are engaged with each other in the occlusion state of the upper and lower males provided with the tray 20 , And the outer shape information acquired by scanning the outer surface of the opposing tooth (t) in a state of being separated from the upper and lower teeth may be automatically registered based on a common portion.

Of course, the practitioner may manually match each of the images according to circumstances, and in this case, the overlapping degree between the common portions may be increased to perform preliminary matching.

Then, an image 311b obtained by inverting the shape of the mold recess 23 from the primary scanning image 311a on the superimposed image is acquired. At this time, the external shape information of the tooth placement target portion can be easily provided simply by scanning the inside of the tray 20 on which the mold groove 23 is formed.

In detail, the inner surface profile of the mold recess 23 formed inside the tray 20 is made to substantially conform to the outer surface profile of the tooth placement target portion. Therefore, it is possible to receive the external profile information of the tooth placement target portion from the internal profile image of the mold groove 23 obtained by scanning the inside of the tray 20.

6A and 6B, the image of the inner surface profile of the mold recess 23 and the image of the reference marker 40 are removed from the primary scanning image 311a superimposed on the secondary scanning image 312, Erase the image. Here, the erased image can be understood as an image of the outer shape of the body of the tray 20 and the occlusion base 90.

In the image 311b inverted so that the inner surface of the mold recess 23 is formed in a substantially concave shape, the mold recess 23 is imaged as a protruded shape 23a. At this time, the shape 23a in which the mold recess 23 protrudes substantially corresponds to the profile profile image of the tooth placement target portion. That is, it is possible to easily acquire the outer surface profile of the teeth to be placed with only the image scanned on the outer side and the inner side of the tray 20 on which the mold groove 23 is formed, without performing the oral scan on the tooth placement target portion separately.

This is because it is possible to easily acquire the shape of the teeth to be placed by using the tray 20 in the process of creating a denture for temporarily using the dental prosthesis during the preparation of the dental prosthesis, So it is economical.

In addition, the tray 20 is made of a rigid material in which the gel impression material is injected into the tooth groove 21 and the outside of the tooth groove 21 is rigid. Accordingly, the reference markers 40 attached to the outside of the tray 20 are prevented from flowing, so that the positions of the images of the reference markers 40 displayed on the respective images can coincide with each other.

At this time, since the outer shape image of the tray 20 existing in a predetermined thickness is erased, a predetermined (predetermined) thickness is formed between the outer surface of the protruded shape 23a of the inner profile image of the mold groove 23 and the image of the reference marker 40 A gap may be formed. An image of a portion of the reference marker 40 attached to the side of the tray 20 is extended to connect to the inverted mold groove 23 to be solidified into the protruded shape 23a Further correction may be performed. Accordingly, the reliability of the information obtained in the matching between the integrated scanning image 313 and the CT image 314 in which the vertical height is considered can be significantly improved.

Meanwhile, as described above, the occlusion scanning image can be erased from the image in which the primary scanning image 311b and the secondary scanning image 312 are superimposed so that the image of the mold groove 23 is solidified. That is, in the integrated scanning image 313 in which the vertical diameter is taken into consideration, the spacing scanning image corresponding to the three-dimensional outer shape of the opposing tooth t and the inverted scanning image As the scanning image 311b is displayed, the vertical height value to be calculated can be obtained more easily.

In the meantime, considering the vertical height L calculated from the integrated scanning image 313 in which the vertical height is obtained as described above, the height of the confrontation tooth t, and the like, from the end of the tooth placement object, the length L to the end of the tangential line can be calculated. Here, the height L of the crown (c) to be designed later can be determined by calculating the length (L) from the end of the tooth placement target portion to the end of the opposing tooth (t). Here, the end of the tooth placement target portion is preferably understood to be the uppermost portion of the alveolar ridge.

That is, the outer surface of the tray 20 can be installed inside the oral cavity with the occlusion base 90 adjusted to the occlusion height so that the patient can feel stable tactile sensation, thereby obtaining each scanning image . Accordingly, it is possible to easily calculate the vertical height from the integrated scanning image 313 in which the vertical height obtained through the preliminary matching between the respective scanning images is considered.

On the other hand, the two-dimensional and three-dimensional internal tissue information on the oral cavity of the subject can be acquired from the CT image 314 obtained by CT photographing of the maxilla and mandible. Here, the two-dimensional and three-dimensional internal tissue information includes the shape of the alveolar bone and the bone density of the inside of the subject through the CT scan, and the image of the reference marker 40 can be acquired together.

At this time, the order of acquiring each image can be changed flexibly according to the practitioner's procedure style. For example, the CT image 314 via a CT scan may be obtained first and the primary scanning image 311a and the secondary scanning image 312 may be obtained, . In addition, the process of reversing the shape of the mold recess 23 from the primary scanning image 311a may be performed first, and may be superimposed on the secondary scanning image 312. FIG.

On the other hand, in the case where the combined scanning image 313 and the CT image 314, which are obtained in the above-described manner, are superimposed on the reference marker 40 to output the degree of fit between the images, The three-dimensional occlusion guide image 315 is obtained (S300).

In this case, the integrated scanning image 313 considering the vertical dimension is preliminarily matched with the primary scanning image 311a and the secondary scanning image 312, and the primary scanning image 311a and the secondary scanning image 312 are preliminarily matched, 23) can be obtained by inverting to be three-dimensional.

The three-dimensional occlusion guide image 315 includes an integrated scanning image 313 in which the vertical height is considered and the reference marker 40, which is paired on the mutually opposing portion of the CT image 314, as a registration reference point Are obtained in aggregate. Then, the three-dimensional occlusion guide image 315 can be acquired through the main matching. At this time, in the main matching, the integrated scanning image 313 considering the vertical height and the reference markers 40 included in the CT image 314 are overlapped to set a common part as a comparison area.

The step of correcting each image is performed so that the uppermost part and the outermost part of the comparison area of the integrated scanning image 313 considering the vertical height and the CT image 314 coincide with each other.

In detail, the integrated scanning image 313 in which the vertical diameter including the contour tooth (t) and the contour information of the tray 20 is considered, and the CT image 314 including the in- And can be displayed.

The operator can display a similar position for each of the pairs of reference markers 40 images displayed on the integrated scanning image 313 considering the vertical height and the CT image 314 as a matching reference point. Here, the reference marker 40 included in the integrated scanning image 313, which considers the vertical height, It is preferable that the reference marker 40 included in the CT image 314 is image information obtained from the primary scanning image 311a and that the reference marker 40 is obtained from the CT image.

At this time, the reference markers 40 displayed on each image are matched in pairs for mutually corresponding positions on the respective images, and images of the reference markers 40 of each pair are overlapped to obtain an initial deviation map having a small error . In addition, an image correction operation may be performed in the image matching process using the deviation map to acquire the highly precise and matched three-dimensional occlusion guide image 315.

Here, the degree of fit refers to a degree of similarity between the integrated scanning image 313 and the CT image 314, in which the vertical height is taken into consideration, by a combining error between the two images.

In detail, the lower the absolute value of the above-mentioned formulas, the more the two images coincide with each other and are superimposed on each other. On the contrary, the higher the absolute value of the above-mentioned combination error, the more the two images are overlapped. That is, when the fitting error is 0, the fitting degree is the highest, and the fitting degree becomes lower in proportion to the absolute value of the fitting error.

As the degree of association between the reference markers 40 displayed on the respective images increases, the degree of coupling of the portions of the integrated scanning image 313 and the CT image 314, Can be interpreted.

For example, when the integrated scanning image 313 and the CT image 314, which have the vertical center of gravity, are considered on the basis of the reference marker 40 and the CT image 314 is superimposed, The surface of the protrusion can be protruded and depressed.

Furthermore, the degree of fit can be calculated through three-dimensional vector data of each image. That is, the three-dimensional vector data of each image can be converted into the same coordinate system, and height information of the surface of each image can be expressed numerically through three-dimensional vector data converted into the same coordinate system.

In detail, when the surface height of each image in the mutually superimposed state is compared and the surface of the other image is projected or depressed in each part of one image, the absolute value of the combining error is large, which means that the degree of fitting is low .

In this case, when the surface of the other image is protruded from the surface of the other image, the combining error has a positive value. If the surface of the other image is recessed from the surface of the one image, the error of the combination may have a negative value.

Here, as the degree of association is color-separated and output, the practitioner can promptly and intuitively judge the correctness of the corneal reflex in the image registration result. Thus, a rapid image calculation process can be performed, and subsequent correction work for acquiring a precise three-dimensional occlusion guide image 315 can smoothly proceed.

On the other hand, the three-dimensional vector data of each image can be digitized and stored in a storage device of a computer, and an image processing process of superimposing each image on a computer can be performed.

In detail, the combined scanning image 313 and the CT image 314 in which the vertical height is considered are overlapped with each other based on the mutually corresponding matching reference points in the first image processing process, thereby forming a deviation map.

Here, the deviation map includes information on the alveolar bone and the bone density of the oral cavity contained in the CT image 314 as one set, and the oral cavity included in the integrated scanning image 313, And includes the external information and the vertical height of the inside as one set.

The integrated information included in each image can be provided as the integrated scanning image 313 and the CT image 314, which considers the vertical height, are superimposed on the basis of the matching reference point. At this time, the degree of coupling is displayed in each pixel when the images are superimposed. Then, image matching is performed to increase the degree of fit displayed on each pixel of the variation map.

Here, the top and outermost portions of the comparison region can be matched with the reference markers 40 shown in the respective images as matching reference points. In this case, the comparison area is preferably set as a common part of the integrated scanning image 313 and the CT image 314 in which the vertical height is considered. Here, the operation of calculating the common portion and setting the comparison region in each of the images may be automatically performed by the image processing apparatus, and the operator may manually set the operation.

By setting the common portion of each image as the comparison region, it is possible to acquire accurate image registration result by integrating necessary information from each image. In detail, the integrated scanning image 313 in which the vertical diameter is taken into consideration is obtained by superimposing the image obtained by combining the image information successively photographed by the scanner moving along the inside of the subject's mouth or the outside of the tray 20 . As a result, the teeth may be distorted from the inside of the oral cavity to the shape of the tray 20 such as the curvature of the teeth and the tray 20. Such distortion may be corrected by correcting the correct heights of the teeth included in the CT image 314 to provide a precise three-dimensional occlusion guide image 315.

Then, when the image matching is completed, the layer showing the degree of fit is removed to acquire a three-dimensional occlusion guide image 315 including the integrated scanning image 313 considering the vertical height and the information of the CT image 314 can do.

Since the reference marker 40 provided on the side surface of the tray 20 can provide a clear reference point for the image registration of the image, it is possible to obtain a more accurate image registration result corresponding to the intraoral state of various subjects. .

Furthermore, the three-dimensional occlusion guide image 315 can be acquired using the integrated scanning image 313 in which the digitalized vertical height is considered and the vector information of the CT image 314. That is, image processing such as rotation, enlargement / reduction, partial angle correction, etc. of each image is performed by processing the vector information using a computer-based simulation program, thereby calculating the degree of fit for each image common portion in the deviation map .

The height of the crown c is set on the basis of the three-dimensional occlusion guide image 315. The fixation groove is formed corresponding to the inner shape of the mouth cavity of the subject and the fixture placement corresponding to the set crown (c) A surge guide including a guide hole 61 formed along the position is manufactured (S400).

In detail, the three-dimensional occlusion guide image 315 is obtained by integrating the integrated scanning image 313 and the CT image 314 in consideration of the vertical dimension. At this time, the three-dimensional occlusion guide image 315 is obtained by preliminarily matching the primary and secondary scanning images 311a and 312 with the external information provided from the integrated scanning image 313, And internal information provided from the CT image 314 through imaging. Here, the external information includes the vertical height, the shape of the chewing surface of the opposing tooth (t) and the external information such as the gums, and the internal information includes information such as the shape of the upper and lower malleus, the bone density, and the like.

The crown c may be designed in correspondence with the interval between the upper and lower teeth, which are spaced corresponding to the occlusion height, based on the three-dimensional occlusion guide image 315. The three-dimensional occlusion guide image 315 may be acquired by matching the integrated scanning image 313 with the vertical image size and the CT image 314, The arrangement of the teeth t and the mating surface information.

That is, since the inclusion height and the external shape information such as the chewing surface of the opposing tooth (t) are included in the integrated scanning image 313 in which the vertical height is considered, the height and the chewing surface shape of the crown (c) Can be obtained.

In addition, three-dimensional (3D) images of the vertical height and the contour information of the opposing tooth (t) calculated in the integrated scanning image 313 in which the vertical height is taken into account and the bone shape and bone density of the upper and lower ear obtained in the CT image 314 From the occlusion guide image 315, it is possible to three-dimensionally acquire the position and the abutment type of the fixture, and the height and shape of the crown (c). At this time, the shape and the arrangement state of the crown (c) are set based on the three-dimensional occlusion guide image 315 including the arrangement of the opposing tooth (t) obtained from the secondary scanning image and the chewing surface information .

That is, in the image matching step that is performed stepwise before the manufacture of the surge guide 60, the clasp height suitable for the subject can be calculated, and the accurate crown (c) can be manufactured based on this. Thus, it is possible to minimize the redesign and reinstallation due to an incorrect crown (c), thereby minimizing waste of time and cost consumed in the operation, and enabling efficient and quick operation.

Further, it is possible to design and manufacture a crown (c) having a height capable of maximizing the satisfaction of the subject while acquiring the three-dimensional occlusion guide image (315), and a crown (c) capable of precisely guiding the installation of the designed crown Guides can be manufactured. Thus, it is possible to provide an implant base device capable of completing the fixture placement and the installation of the abutment / crown (c) in a short period of time by a single operation.

In detail, referring to FIG. 8, the surgeon guide 60 is formed with a fixing groove portion which is formed in an inner shape of the mouth of the subject. In addition, the fixing groove may be fixedly coupled to the tooth placing part, and the hole for fixing the fixture may be drilled through the guide hole 61 in a state where the surge guide 60 is fixed.

The surge guide 60 is manufactured on the basis of the three-dimensional occlusion guide image 315. The shape information of the tooth placement part and the opposing tooth (t) And each image including the internal organization information of the upper and lower males is matched and calculated. Accordingly, the fixing groove of the surge guide 60 can be designed to be fitted to the outer surface of the to-be-placed part of the subject.

At this time, the fixing groove may be designed from the image of the mold groove 23 included in the tray 20 from the three-dimensional occlusion guide image 315. In detail, since the swing of the surge guide 60 is minimized so as to be accurately positioned at a predetermined position when the fixture is placed, it is preferable that the outer surface of the tooth placement target portion and the fixing groove portion are jointly fixed.

For this, the shape of the fixing groove may be designed through the image of the mold recess 23 included in the primary scanning image 311a so as to correspond to the outer surface profile of the tooth placement target portion. At this time, unnecessary image data that may be interfered with in the designing process except the image of the mold groove 23 can be selectively erased. Accordingly, since the shape of the fixing groove portion is substantially conformed to the tooth placement target portion, the surge guide 60 can be designed to be stably fixed to the tooth placement target portion.

When the fixing groove is designed, the direction of the guide hole 61 is set to be parallel to the fixture mounting direction on the basis of the state where the surge guide 60 is fixed to the tooth placement target portion.

At this time, the shape and the arrangement state of the crown (c) are determined based on the three-dimensional occlusion guide image 315 including the arrangement of the opposed tooth (t) obtained from the secondary scanning image (312) Lt; / RTI > Further, since the secondary scanning image 312 includes the occlusion scanning image scanned with the tray 20 including the occlusion base 90 whose occlusion height is adjusted, the vertical height can be easily Can be calculated.

Thus, since the present invention can provide information for simultaneously designing and fabricating the surge guide 60 and the implant prosthesis through the matching between the images obtained corresponding to the subject of tooth placement of the subject, the number of visits by the subject and the number of visits The procedure is significantly shortened and an implant-based technology device can be provided that can complete the fixture placement and the installation of the abutment / crown in a short period of time.

In this case, even in the case of a physician who does not have basic information about the inside of the mouth, the impression material 22 is charged into the tooth groove 21 of the tray 20 during the impression preparing process for establishing the implant treatment plan, At the same time, the reference markers 40 are attached to the solid outer surface of the tray 20 instead of the to-be-placed object to be fluidized to obtain an image, so that the matching reference position between the obtained images can be clarified. Accordingly, since the accuracy of the surge guide 60 and the prosthesis, which are designed and manufactured based on the three-dimensional occlusion guide image 315 obtained through matching of the respective images, is improved, the reliability of the implant procedure can be remarkably improved.

Further, the upper surface of the occlusal base 90 stacked on the outer surface of the tray 20 engaged with the opposed tooth t is cut to obtain a simple and accurate vertical diameter value by adjusting the occlusion height to be felt by the recipient comfortably. And the precision of the crown (c) can be easily designed by using the crown (c), so that the satisfaction of the procedure can be remarkably improved.

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.

311a: Primary scanning image 312: Secondary scanning image
313: Integrated Scanning Image 314: CT Image
315: Three-dimensional bite guide image 20: Tray
21: dentition groove 22: impression material
23: Mold joint 60: Surgical guide
61: guide hole C: crown
t: Scrambled teeth

Claims (5)

A first step of attaching a plurality of reference markers on a side surface and a tray having a tooth groove on which an impression material is injected on the inner surface thereof to an inside of a mouth of the subject to be inspected,
The occlusion base is stacked on the outer surface and the thickness is adjusted to obtain a first scanning image by scanning the tray with the occlusion height corresponding to the opposed tooth, and the second and third scanning images are acquired A second step of preliminarily matching the primary scanning image with the primary scanning image to obtain an integrated scanning image in which vertical concavity is taken into consideration by inverting the shape of the mold concave image from the primary scanning image, ;
A third step of obtaining a three-dimensional occlusion guide image based on the combined scan image and the CT image in which the vertical height is considered based on the reference marker, and a deviation map outputting the degree of fit between the images; And
And a guide groove formed along a fixture groove position corresponding to the set crown and a fixation groove portion formed in the inner shape of the mouth of the subject by setting the height of the crown on the basis of the 3D- The method comprising the steps of: (a) forming a crown on a tooth; The method according to claim 1,
In the second step, the occlusion height is calculated according to the chewing sensitivity of the subject while the tray is installed. The occlusion height is adjusted by cutting based on chewing marks of the cheek teeth displayed on the upper surface of the occlusion base during occlusion of the upper and lower males ,
Wherein the crown is designed to correspond to an interval between the upper and lower jaws spaced apart corresponding to the occlusion height based on the three-dimensional occlusion guide image. In the fourth step, Crown manufacturing method. The method according to claim 1,
In the second step, The image of the mold cavity inner surface profile image and the reference marker image is excluded from the primary scanning image,
And reversing the shape of the mold cavity inner surface profile so that the shape of the mold inner surface profile image is solidified to compensate for the relative positional relationship of the reference marker image. The method according to claim 1,
In the second step, when the integrated scanning image in which the vertical height is considered is compared with the displacement map in which the CT image is superimposed on the reference marker and the degree of fit between the images is output, the vertical height is considered Setting a common portion of the integrated scanning image and the CT image as a comparison region;
And correcting each image so that an uppermost portion and an outermost portion of the comparison region coincide with each other in a superimposed image. The method according to claim 1,
Wherein in the third step, the shape and the arrangement state of the crown are set on the basis of the three-dimensional occlusion guide image including the arrangement of the opposing teeth obtained from the secondary scanning image and the chewing surface information. Surgical guide and crown manufacturing method for dental implant.

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