KR102242899B1 - screw guider and method for manufacturing thereof - Google Patents

Abstract

In order to improve safety and precision, the present invention is arranged to surround the target arch tooth so as to be molded and fixed to the surface of at least one target arch tooth, and an alignment holder in which a mating groove is formed in a recess corresponding to the dental arch profile of the target arch part; It is provided as a hollow body, but is used for the multi-purpose according to a predetermined arrangement angle toward the placement point of the multi-purpose screw set based on a three-dimensional work image planned to guide the multi-purpose screw to be installed in the alveolar bone of the target arch. A guide portion through which a guide hole is formed with an inner diameter corresponding to the outer diameter of the screw; And at least one alignment rod portion connected at both ends of the alignment holder portion and the guide portion for matching a predetermined alignment distance to the guide portion so that the outlet of the guide hole is aligned toward a predetermined placement point.

Description

Screw guider and method for manufacturing thereof TECHNICAL FIELD

The present invention relates to a screw guider and a method of manufacturing the same, and more particularly, to a screw guider with improved safety and precision, and a method of manufacturing the same.

In general, occlusion refers to a state in which teeth of the upper and lower jaws are engaged with each other when the mouth is closed. In addition, malocclusion refers to an inaccurate occlusal relationship in which the alignment of the teeth is uneven due to some reason or the interlocking state of the upper and lower jaws is out of the normal position, causing functional and aesthetic problems.

Here, the cause of the malocclusion is known to have a large genetic effect, but may be caused by various causes such as a problem of the shape or size of a tooth, an environmental influence, a bad habit, an incorrect posture, and a congenital disorder.

On the other hand, when malocclusion occurs, the teeth are not even and food waste is likely to remain between the teeth. In addition, since it is not easy to cleanly manage with accurate brushing, plaque in the oral cavity increases, and it is easy to progress to gum disease such as dental caries or inflammation of the gums. Moreover, if there is a tooth that deviates from the normal dentition or the position of the jaw is abnormal, there is a high possibility of damage to the tooth such as tooth fracture when an external shock is applied.

Accordingly, orthodontic treatment is performed to treat the malocclusion. Here, the orthodontic treatment uses the property of moving when the tooth receives an external force. In detail, orthodontic treatment uses a variety of devices and methods depending on the cause or timing of treatment. For example, it may be classified as a device that inhibits or enhances the development of the upper and lower jaw bones, or a device that gradually moves the teeth to a desired position. In addition, it can be divided into a removable device that can be installed and removed in the oral cavity and a fixed device that is attached to a tooth and removed at the end of treatment.

On the other hand, a screw was placed on the patient's gums for procedures such as orthodontic treatment and orthognathic surgery. Here, in the case of orthodontic treatment, each orthodontic bracket is attached to the surface of the orthodontic tooth, and the orthodontic bracket is connected with at least one or more orthodontic wires. Subsequently, the orthodontic wire is properly pulled with a tangy member provided with a spring, orthodontic elastic rubber or a square arc wire to correct the teeth.

In addition, one end of the tanji member is fixed to the orthodontic wire, and the other end is connected to a screw that is placed in the alveolar bone at a position in consideration of the orthodontic direction to provide a traction force for orthodontic correction to the orthodontic wire.

Here, the conventional screw placement method was planned and progressed by the experience of the operator, and the operator himself formed a perforation for screw fastening in an arbitrary position among the gums of the operator without accurate confidence.

Therefore, the conventional screw placement method is not objective because it is highly dependent on the capabilities of the operator, and there is a problem that the recipient must rely entirely on the experience and capabilities of the operator.

In addition, when the screw is placed in the oral cavity, there is a problem in that the screw is frequently dislodged or failed to be placed due to damage to the tooth root and the surrounding anatomical structure caused by being placed in a limited space between the tooth roots anatomically.

In particular, when the screw penetrates the nerve tissue of the person to be treated in the process of forming a perforation, there is a problem that the person to be treated is exposed to a serious risk. In addition, when the screw penetrates the maxillary sinus membrane when it is placed in the maxillary gum of the person to be treated, there is a problem that it is exposed to contamination.

In addition, when the screw penetrates the root of the person to be treated, the tooth is infected as the root is exposed to bacteria, so a separate treatment process is required to recover it, and there is a serious problem that safety and precision are remarkably reduced during the procedure.

Korean Utility Model Registration No. 20-0233786

In order to solve the above problems, the present invention has as a solution to provide a screw guider with improved safety and precision and a method of manufacturing the same.

In order to solve the above problem, the present invention is arranged to surround the target arch tooth so as to be molded and fixed to the surface of at least one target arch tooth, and in correspondence with the dental arch profile of the target arch, the mating groove is formed to be recessed. Holder part; It is provided as a hollow body, but is used for the multi-purpose according to a predetermined arrangement angle toward the placement point of the multi-purpose screw set based on a three-dimensional work image planned to guide the multi-purpose screw to be installed in the alveolar bone of the target arch. A guide portion through which a guide hole is formed with an inner diameter corresponding to the outer diameter of the screw; And at least one alignment rod portion connected at both ends for matching a predetermined alignment distance to the alignment holder portion and the guide portion so that the outlet of the guide hole is aligned toward a preset placement point, wherein the guide portion A first guide part integrally connected to the other end, and a second guide part detachably coupled to the first guide part, wherein the guide hole comprises the first guide part so that the guide part is easily separated after insertion of the multipurpose screw. It is formed on the opposite surface between the guide part and the second guide part, and the first guide part and the second guide part are divided along the circumferential direction, and the first guide part and the second guide part are formed in cross-sectional shape when they are joined to each other. It is formed in a circular shape, and each opposing surface of the first guide part and the second guide part is cut along a radial direction, and a first guide groove is formed in a semicircular cross section along the length direction on the opposite surface of the first guide part. A second guide groove is recessed in a semicircular cross-section along a longitudinal direction on the facing surface of the second guide portion facing the first guide groove, and each facing surface of the first guide portion and the second guide portion In each of the attachment and detachment means for clamping each other is formed, the first guide portion and the outer surface of the second guide portion is formed with a fixing groove continuously recessed inward in the radial direction along the circumferential direction, and the first guide portion And an elastic band made of an elastic material inserted into the fixing groove so that the second guide portions are fixed to each other.

In addition, the present invention includes a first step of obtaining a scanning image and a CT image of a target arch, and obtaining a three-dimensional working image by overlapping and matching the obtained scanning image and the CT image based on a common portion; A virtual alignment holder in which a virtual fitting groove portion corresponding to the dental arch profile of the target arch is set in the three-dimensional working image, and a virtual alignment angle in which the arrangement angle is aligned in correspondence with the placement point of the multi-purpose screw to be placed in the alveolar bone of the target arch. Both ends are connected to the virtual alignment holder and the virtual guide for matching a preset alignment distance to the virtual alignment holder and the virtual guide so that the guide unit and the outlet of the virtual guide hole are aligned toward a preset placement point. A second step of generating the design information of the screw guider including the virtual alignment rod part; And a real alignment holder corresponding to the virtual alignment holder and a real guide corresponding to the virtual guide unit, but connected to the alignment holder, based on the design information of the screw guider. Including a third step, wherein the second step, wherein the virtual guide portion is virtually aligned at an arrangement angle corresponding to the placement point, and a virtual guide hole set to an inner diameter corresponding to the outer diameter of the multipurpose screw is virtually arranged. And, each of the virtual guide units being designed as a virtual first guide unit and a virtual second guide unit that are separated from each other based on the virtual guide hole, wherein the third step is formed based on the virtual guide hole. Including the step of manufacturing a guide hole formed in the guide portion, wherein the guide portion has a size and shape corresponding to each of the virtual first guide portion and the virtual second guide portion, and a first guide portion that is detachably coupled to each other And a second guide part.

Through the above solution means, the present invention provides the following effects.

First, a guide hole is formed along the arrangement angle toward the placement point of the multipurpose screw set at a safe location separated from the nerve tissue and root, and the guide part with a stopper line limiting the placement depth of the multipurpose screw is formed based on 3D design information. Since it is manufactured as a multipurpose screw, it is possible to safely place the multi-purpose screw, so that safety during the procedure can be improved.

Second, placement for the placement of the multi-purpose screw in a safe location that is non-contact with the nerve tissue, roots, etc. by the guide part made in real based on the virtual guide part that is virtually arranged at a preset angle in response to the placement point of the multi-purpose screw. Since the point is accurately guided and perforated, safety and precision can be remarkably improved during the procedure.

Third, the mating groove of the alignment holder part formed in correspondence with the dental arch profile of the target arch adjacent to the placement point of the multi-purpose screw is in contact with the target arch tooth, and the guide part for guiding the multi-purpose screw corresponds to the placement point. Since it is firmly fixed, the accuracy can be remarkably improved when the multipurpose screw is fastened.

Fourth, the multipurpose screw is guided by the guide unit in the state where the alignment holder is fitted to the target arch tooth, and the guide unit surrounding the multipurpose screw is detachably separated and removed after being placed in the alveolar bone of the target arch. Quick and easy installation and removal are possible, so the usability can be remarkably improved.

1 is a flow chart showing a method of manufacturing a screw guider according to an embodiment of the present invention.
Figure 2 is a perspective view showing a screw guider according to an embodiment of the present invention.
Figure 3 is an exploded perspective view showing a screw guider according to an embodiment of the present invention.
Figure 4 is an exemplary view showing a state of use of a screw guider according to an embodiment of the present invention.
5 is an exemplary view showing design information of a screw guider in a method of manufacturing a screw guider according to an embodiment of the present invention.

Hereinafter, a screw guider and a manufacturing method thereof according to a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.

1 is a flowchart showing a method of manufacturing a screw guider according to an embodiment of the present invention, and FIG. 2 is a perspective view showing a screw guider according to an embodiment of the present invention. And, Figure 3 is an exploded perspective view showing a screw guider according to an embodiment of the present invention, Figure 4 is an exemplary view showing a state of use of the screw guider according to an embodiment of the present invention. And, Figure 5 is an exemplary view showing the design information of the screw guider in the manufacturing method of the screw guider according to an embodiment of the present invention.

1 to 5, the method of manufacturing a screw guider according to an embodiment of the present invention includes obtaining a three-dimensional work image (s10), generating design information of a screw guider (s20), and manufacturing a screw guider (s30). It includes a series of steps.

Here, the screw guider is installed in the oral cavity to guide the placement direction of the multi-purpose screw (s) that is installed in the alveolar bone for procedures such as orthodontic treatment or double jaw surgery, and forms a perforation for the placement of the multi-purpose screw (s). It is a device that guides the direction of drilling.

The method of manufacturing such a screw guider is preferably performed through a screw guider manufacturing system including a planning unit. In detail, each image data such as a plurality of scanning images and CT images is acquired using an imaging device such as an oral scanner or a computed tomography machine, and transmitted to the planning unit. In addition, through the image processing process of aligning, overlapping, swapping, correcting or matching a plurality of the scanning images and the CT images through the planning unit, a 3D working image, which is the final image data, is generated. In addition, a virtual screw guider, which is design information of the screw guider, is generated through the planning unit based on the generated 3D work image.

Here, the planning unit includes a storage unit storing each image data, a processing unit processing the integrated scanning image and the three-dimensional work image, and the virtual screw guider to be generated based on each image data. In addition, an input unit for inputting information and a control command to the processing unit, an input unit for outputting the input information and control commands, and generated data such as each image data, the 3D work image, and the virtual screw guide are included. .

In addition, the planning unit may further include a communication unit capable of receiving each image data or transmitting each image data or generated data to an external device. That is, each image data acquired using the imaging device is transmitted to the planning unit through the communication unit, and each image data or generated data is transmitted to the external device through the communication unit. In this case, the external device is preferably understood as a manufacturing device capable of manufacturing a real screw guider corresponding to the virtual screw guider, such as a 3D printer or a milling machine.

On the other hand, the manufacturing method of the screw guider according to the present invention will be described in detail below. First, a scanning image and a CT image of a target arch are obtained, and the obtained scanning image and the CT image are superimposed and matched based on a common part to obtain a three-dimensional working image 1d (s10).

Here, the target arch refers to a tooth in which the screw guide 100 is substantially installed, and a case in which the target arch is the maxilla in an embodiment of the present invention is illustrated and described as an example.

In addition, the three-dimensional work image (1d) is a three-dimensional image (2d), including a tooth image (3d) including a root image, an alveolar bone image (4d), and a maxillary sinus image (5d) of the target arch. It is desirable to understand it as digital data. In this case, the three-dimensional working image 1d has the same size and shape in correspondence with the actual target arch of the person to be treated. That is, the gum image (2d), the tooth image (3d), the alveolar bone image (4d), and the maxillary sinus image (5d) are real gums (2), teeth (3), alveolar bone, and maxillary sinus. Substantially correspondingly have the same size and shape.

Here, the three-dimensional working image (1d) includes the gum image (2d) corresponding to the outer surface profile of the target arch, and the tooth image (3d) including a root image and a tooth surface image obtained from the CT image. Is imaged and displayed in three dimensions. Moreover, the alveolar bone image 4d and the maxillary sinus image 5d may be imaged and displayed in three dimensions on the three-dimensional working image 1d.

Then, each image data such as a scanning image and a CT image is acquired using an imaging device such as an oral scanner or a computed tomography machine, and transmitted to the planning unit. Here, the scanning image may include scanning image data on the outer surface of the target arch. That is, the gum part image 2d and the tooth part image 3d for the tooth surface are obtained from the scanning image.

In addition, the CT image is preferably obtained by directly imaging the oral cavity using a computed tomography. Through this, the CT image includes 3D data of the alveolar bone of the target arch, excluding soft tissues such as lips, cheek mucosa, and gums through which radiation is transmitted due to its low density. That is, the tooth image 3d and the alveolar bone image 4d are obtained from the CT image.

In addition, the 3D working image 1d may be generated as the scanning image and the CT image are overlapped and matched based on a common portion by the planning unit. In this case, a portion commonly displayed in the scanning image and the CT image is set as a registration reference point, and overlapped and matched. That is, a common part such as interdental, upper/lower platoon of the target arch, or a matching marker provided with a radiopaque material in some cases is provided as a visible reference index, so that the scanning image and the CT image are overlapped and matched with each other. . Through this, the accurate 3D work image 1d including 3D surface information and 3D data of the target arch displayed on the scanning image may be generated.

Of course, in some cases, the step of obtaining individual scanning images and CT images and matching is omitted, but a three-dimensional work image may be acquired at once through a high-performance computer imaging device that simultaneously acquires soft tissue and alveolar bone in the oral cavity due to minimal transmittance. have.

It is preferable that the three-dimensional working image 1d includes image data for an area that poses a risk to the safety of the operator when the multi-purpose screw s is placed, such as a nerve tissue, a tooth root, and a maxillary sinus membrane.

Here, the placement point (k) of the multi-purpose screw (s) is set in the three-dimensional working image (1d) corresponding to a position spaced apart from the nerve tissue, the root, and the maxillary sinus inside the target arch by the planning unit. It is desirable to be. At this time, the placement point (k) set in the three-dimensional work image (1d) has the same size and shape substantially corresponding to the actual placement groove (k1) formed by actually drilling the gums and alveolar bones of the person to be treated. In addition, the implantation point (k) is a concept encompassing the image data included in the three-dimensional work image (1d) and the region or point before the actual implantation groove (k1) is perforated in the actual gum (2) and alveolar bone. It is desirable to understand that it is used as.

And, the depression depth, diameter and angle of the implantation point (k) is the tooth image (3d), the alveolar bone image (4d), and the maxillary sinus including the root image included in the three-dimensional working image (1d). It is preferably set based on the image 5d.

Through this, the insertion point (k) at which the multi-purpose screw (s) is placed is spaced apart from the nerve tissue, the root, and the maxillary sinus membrane by the planning unit based on the working image (1d) (2d) And the alveolar bone image 4d.

On the other hand, the design information (100d) of the screw guide is generated in the three-dimensional work image (1d) (s20). Here, it is preferable that the design information 100d of the screw guider includes a virtual alignment holder 10d in which a virtual fitting groove 11d corresponding to the dental arch profile of the target arch is set.

Here, the virtual alignment holder portion 10d is generated to surround the surface image of at least one target arch tooth included in the tooth portion image 3d, and is virtually formed on the three-dimensional working image 1d through the planning portion. Can be placed.

In addition, the virtual fitting groove (11d) is a virtual target arch tooth surface, that is, an inner surface corresponding to the dental arch profile of the target arch on one surface of the virtual alignment holder (10d) facing the tooth image (3d) It is preferred to be virtually arranged as a profile.

Here, after the virtual fitting groove 11d is overlapped on the end side of the tooth image 3d, the overlapped region between the virtual fitting groove 11d and the tooth image 3d is erased through the planning unit. I can.

Accordingly, since the inner profile of the real fitting groove 11 manufactured based on the virtual fitting groove 11d is formed to substantially correspond to the dental arch profile of the target arch, the fitting degree can be remarkably improved.

In addition, the design information (100d) of the screw guider includes a virtual guide part (20d) in which the arrangement angle is aligned in correspondence with the placement point (k) of the multipurpose screw (s) to be placed in the alveolar bone of the target arch. desirable.

Here, the virtual guide part (20d) is virtually arranged on the three-dimensional work image (1d), and the arrangement angle and position are set corresponding to the placement point (k) at which the multi-purpose screw (s) is placed and aligned. It is desirable to be.

At this time, the placement point (k) is preferably set through the planning unit based on the root image, the alveolar bone image (4d), and the maxillary sinus image (5d) included in the three-dimensional working image (1d). . That is, it is preferable that the depth, diameter, and angle of the placement point k are set to a position that is spaced apart from the nerve tissues, roots, and maxillary sinus membranes inside the target arch through the planning part so as to be mutually non-interfering.

In addition, the virtual guide part 20d may be generated as virtual image data in a hollow cylindrical shape, and the virtual guide part 20d is preferably virtually aligned at a predetermined arrangement angle toward the placement point k. Do.

In addition, an end of the virtual guide part 20d adjacent to the placement point k may be set as an outer profile corresponding to the surface profile of the gum part image 2d. Moreover, the outer diameter of the virtual guide part 20d may be set to correspond to the outer diameter of the head part of the multipurpose screw s.

Here, the multi-purpose screw (s) may be provided in a cylindrical shape having various diameters according to the purpose of the procedure, and may include a fastening portion having a fastening screw thread formed on the outer periphery. In addition, the multi-purpose screw (s) is extended radially outward along the circumferential direction from one end of the fastening portion, but may be provided with a head portion formed with a hexa groove in which the fastening means is engaged on the outer surface of the outer end side in the longitudinal direction. have. In this case, a virtual screw created with the same size and shape may be virtually disposed in correspondence with the multipurpose screw s at the placement point k set in the three-dimensional working image 1d.

At this time, the virtual screw is pre-stored in a digital library for generating three-dimensional design information for each type of various diameters and lengths corresponding to the multi-purpose screw (s) of the real object, and is stored in the three-dimensional work image (1d) through the planning unit. Can be extracted.

In addition, it is preferable that the virtual guide hole 21d is arranged in a virtual alignment along a predetermined arrangement angle toward the placement point k in the virtual guide part 20d. In this case, it is preferable that the virtual guide hole 21d is virtually arranged at an arrangement angle corresponding to the depressed angle of the placement point k.

Here, the placement direction of the virtual guide hole 21d is disposed substantially corresponding to the placement direction of the placement point k, and the exit of the virtual guide hole 21d is substantially continuous to the placement point k. It is preferably arranged to be aligned. In this case, the outlet of the virtual guide hole 21d means an end of the virtual guide hole 21d in contact with the placement point k.

Accordingly, a guide part made in real based on the virtual guide part 20d, which is virtually aligned and arranged at an arrangement angle and a position corresponding to the placement point k set at a position non-contact with the nerve tissue, the root of the maxillary sinus and the maxillary sinus membrane. (20) is provided. Through this, since the insertion direction of the multipurpose screw s is accurately guided by the guide unit 20, safety and precision during the procedure can be remarkably improved.

Accordingly, a real guide part 20 is manufactured based on the virtual guide part 20d which is virtually aligned and arranged at a predetermined arrangement angle corresponding to the placement point k of the multipurpose screw s. Accordingly, the insertion point (k) for the placement of the multi-purpose screw (s) is accurately guided and perforated at a location that is not in contact with the nerve tissue, the root, etc. by the guide unit 20, so safety and precision during the procedure are significantly improved. Can be.

In addition, it is preferable that the sum of the length of the virtual guide hole 21d and the depth of depression of the insertion point k substantially correspond to the length of the fastening portion of the multi-purpose screw s.

In addition, a virtual stopper line having a predetermined thickness may be formed along the circumferential direction so that the head portion of the multi-purpose screw s is engaged at the entrance of the virtual guide hole 21d. In this case, the entrance of the virtual guide hole 21d means a position opposite to the exit of the virtual guide hole 21d. It means the end of the virtual guide hole (21d) of the portion where the multi-purpose screw (s) is first inserted.

In this case, the virtual stopper line may be formed in a ring shape, and the outer diameter of the virtual stopper line corresponds to the outer diameter of the head portion of the virtual screw, and the inner diameter of the virtual stopper line corresponds to the outer diameter of the fastening portion of the virtual screw. Do.

Accordingly, since the head of the multi-purpose screw (s) is locked to the stopper line of the guide part 20 made in real based on the virtual stopper line, the multi-purpose screw (s) to be inserted into the insertion groove (k1) The depth of insertion may be limited.

Here, when the sum of the length of the virtual guide hole 21d and the depth of depression of the insertion point k is less than the length of the fastening part of the virtual screw, the end of the real multi-purpose screw s is neural tissue, root , There is a risk of contact with the maxillary sinus membrane. Accordingly, there is a concern that the nerve tissue, the roots, and the maxillary sinus membrane are damaged and infected, resulting in a serious risk to the life of the person to be treated.

Accordingly, it is preferable that the sum of the length of the virtual guide hole 21d and the depth of depression of the insertion point k is greater than or equal to the length of the fastening portion of the virtual screw, most preferably substantially corresponding to each other. Through this, since the multi-purpose screw (s) is guided and placed at the safe placement point (k) of the person to be treated through the guide hole 21 made in real based on the virtual guide hole (21d), the safety of the procedure can be significantly improved. I can. At this time, since the head portion of the multi-purpose screw s is engaged with the stopper line, the implantation depth is limited, so that the safety of the procedure can be improved.

Accordingly, the guide hole 21 is formed along the arrangement angle toward the placement point (s) set at a safe location spaced apart from the nerve tissue and the root, and a stopper line is formed to limit the placement depth of the multi-purpose screw (s). (20) is manufactured based on 3D design information. Therefore, it is possible to safely place the multi-purpose screw s, so that safety during the procedure can be improved. In this case, it is preferable to understand that the 3D design information of the virtual guide part 20d and the guide part 20 is used in the same meaning.

In addition, the virtual guide portion 20d may be designed as a virtual first guide portion and a virtual second guide portion separated from each other based on the virtual guide hole 21d through the planning portion.

Through this, the guide part 20, which is made in real based on the virtual guide part 20d, corresponds to the virtual guide hole 21d, so that both sides are separated based on the guide hole 21 formed in the real, so that they are mutually detachable. It can be manufactured to be combined into.

Moreover, it is preferable that the virtual guide hole 21d and the guide hole 21 manufactured in real form based on the virtual guide hole 21d are set and manufactured with an inner diameter corresponding to the outer diameter of the multipurpose screw s. Through this, the multi-purpose screw (s) is guided by the guide hole (21), and the clearance space between the fastening part of the multi-purpose screw (s) and the guide hole (21) when it is placed at the insertion point (k) is Since it is substantially removed, accurate placement is possible.

On the other hand, it is preferable that the design information (100d) of the screw guide includes design information of the virtual alignment rod unit (30d) connected to the virtual alignment holder unit (10d) and the virtual guide unit (20d) at both ends. . In this case, it is preferable that one side of the virtual alignment rod portion 30d is integrally connected to the outer portion of the virtual alignment holder portion 10d and the other side is integrally connected to the virtual guide portion 20d.

Here, the length of the virtual alignment rod part 30d is preferably set to a predetermined length through the planning part so that the end of the virtual guide part 20d faces the placement point k. That is, it is preferable that the length of the virtual alignment rod part 30d is aligned with a preset length so that the outlet of the virtual guide hole 21d is aligned toward the preset placement point k.

Through this, the support force of the real alignment holder 10 is aligned to the placement angle and position corresponding to the placement point k by the real alignment rod 30 corresponding to the virtual alignment rod 30d. It may be transferred to the arranged real guide part 20.

Moreover, the virtual alignment rod unit 30d may be generated in at least one or more, preferably a plurality of, by the planning unit, and may be virtually disposed between the virtual alignment holder unit 10d and the virtual guide unit 20d. .

For example, one end of the virtual alignment rod part 30d is virtually arranged to be connected to one side in the width direction of the virtual alignment holder part 10d, and the other end is virtually connected to the virtual guide part 20d. Can be placed.

In addition, one end of the virtual alignment rod portion (30d) is virtually arranged to be integrally connected to the other side in the width direction of the virtual alignment holder portion (10d), and the other end is integrally connected to the virtual guide portion (20d). Can be virtually placed.

Accordingly, the support provided from the alignment holder 10 to the guide 20 is increased by a plurality of alignment rod units 30 manufactured in real form based on the plurality of virtual alignment rod units 30d. Can be.

On the other hand, a screw guider 100 including an alignment holder 10, a guide 20, and an alignment rod 30 is manufactured based on the design information 100d of the screw guider (s30). At this time, the screw guider 100 according to an embodiment of the present invention includes an alignment holder portion 10, a guide portion 20, and an alignment rod portion 30.

Here, the real alignment holder 10 has the same size and shape corresponding to the virtual alignment holder 10d. In addition, the real guide portion 20 is integrally connected with the alignment holder portion 10 and substantially corresponds to the virtual alignment holder portion 10d and has the same size and shape. Moreover, the real alignment rod part 30 has the same size and shape in correspondence to the virtual alignment rod part 30d.

In detail, the alignment holder 10 is in surface contact with the surface of at least one target arch tooth 3 corresponding to the placement point k of the multipurpose screw s, so that the target arch tooth 3 It is preferably arranged to surround the end side of.

In addition, the alignment holder 10 may be provided in a form in which at least one or more, preferably a plurality of spherical appearances corresponding to the size of each target arch tooth 3 are continuously connected to each other.

Moreover, the inner part 12a and the outer part 12b of the alignment holder part 10 have a decut surface so that the alignment holder part 10 installed on the target arch tooth 3 is easily gripped by the operator. Can be formed. At this time, depending on the case, on the outer part 12b of the decut surface or the alignment holder 10, the alignment holder 10 may be marked with numbers, letters, etc. corresponding to the position to be placed in the target arch tooth 3 It may be printed and provided.

Here, it is preferable that the inner portion 12a and the outer portion 12b of the alignment holder portion 10 are disposed to surround the end side of the target arch tooth 3. In this case, the inner part 12a refers to a part that is disposed inside the oral cavity when the alignment holder part 10 is disposed in the oral cavity of the person to be treated. In addition, the outer portion 12b refers to a portion disposed outside the oral cavity when the alignment holder portion 10 is placed in the oral cavity of the person to be treated. At this time, it is preferable to understand that the inner portion 12a and the outer portion 12b of the alignment holder portion 10 are integrally formed with each other.

In addition, the alignment holder 10 does not cover the entire target arch tooth 3, but covers the end side of the target arch tooth 3 with a minimum area for fitting and fixing the target arch tooth 3 Can be placed.

In addition, it is preferable that the alignment holder 10 is molded and fixed to the surface of at least one target arch tooth 3 corresponding to the placement point k. That is, it is preferable that the alignment holder portion 10 does not cover the entire target arch tooth 3 but is continuously disposed on at least one target arch tooth 3 adjacent to the placement point k.

For example, the alignment holder portion 10 may be continuously molded to the three target arch teeth 3 adjacent to the placement point k. As a result, the alignment holder 10 is designed and manufactured compactly with a minimum area for fixing as the alignment holder 10 is in surface contact with the target arch tooth 3 and thus economical efficiency can be improved.

Here, the alignment holder portion 10 surrounds and fits the target arch tooth 3, and at the same time, the end of the guide portion 20, which will be described later, may be in surface contact with the gum 2, so that the screw guider 100 Can be firmly fixed in the oral cavity.

In addition, a fitting groove 11 is formed in the alignment holder 10 corresponding to the dental arch profile of the target arch. At this time, the fitting groove 11 has the same size and shape substantially corresponding to the virtual fitting groove 11d.

Here, the fitting groove 11 corresponds to the dental arch profile of the target arch corresponding to the placement point k between the inner portion 12a and the outer portion 12b integrally formed with the inner portion 12a. It is preferable to form a depression. That is, the depression depth of the fitting groove 11 may be formed to correspond to the length of the end side of the target arch tooth 3 adjacent to the placement point k. In addition, the shape of the fitting groove 11 may be formed to correspond to the dental arch profile of the target arch adjacent to the placement point k.

Accordingly, the mating groove 11 of the alignment holder 10 formed in correspondence with the dental arch profile of the target arch adjacent to the placement point k is in surface contact with the target arch tooth 3 and is joined. Through this, since the guide part 20 for guiding the multi-purpose screw (s) is firmly fixed in correspondence with the placement point (k), the accuracy can be improved when the multi-purpose screw (s) is fastened to the alveolar bone of the target arch. I can. In addition, in some cases, a separate bonding means may be additionally filled and cured in the fitting groove 11 so as to improve the fixing force with the target arch tooth 3.

On the other hand, the guide part 20 is provided as a hollow body, and is disposed along a predetermined arrangement angle toward the placement point (k) so that the multi-purpose screw (s) to be inserted into the alveolar bone of the target arch is guided therein. desirable. At this time, it is preferable that a guide hole 21 is formed through the guide part 20 with an inner diameter corresponding to the outer diameter of the multipurpose screw s.

In this case, the placement point (k) is preferably set based on the planned three-dimensional work image (1d), and the guide unit 20 is arranged along a predetermined angle toward the placement point (k). It is preferable to be provided.

Here, the guide part 20 may be provided in a hollow cylindrical shape, and the end of the guide part 20 disposed adjacent to the insertion groove part k1 is an outer surface corresponding to the surface profile of the gum 2 It can be formed into a profile.

Through this, since the end of the guide part 20 and the gum 2 are in surface contact with each other, the screw guider 100 is supported in the oral cavity, so that accurate guidance is possible when the multipurpose screw s is inserted.

In addition, it is preferable that the guide part 20 is arranged in alignment with an arrangement angle and a position corresponding to the placement point k. In addition, it is preferable that the guide hole 21 is formed through the inner circumference of the guide part 20 in the longitudinal direction. In this case, the guide hole 21 is preferably arranged to be aligned at an arrangement angle substantially corresponding to the insertion groove (k1) corresponding to the insertion point (k) for guiding the multi-purpose screw (s).

Here, the guide hole 21 formed on the basis of the virtual guide hole 21d is preferably formed to penetrate through the guide part 20, and the guide hole 21 is the virtual guide hole 21d. ) Has substantially the same size and shape corresponding to.

In addition, it is preferable that the sum of the length of the guide hole 21 and the depression depth of the insertion groove k1 substantially correspond to the length of the fastening portion of the multi-purpose screw s. In addition, a stopper line having a predetermined thickness may be formed at the entrance of the guide hole 21 along the circumferential direction so that the head of the multi-purpose screw s is engaged. At this time, the entrance of the guide hole 21 means a position opposite to the exit of the guide hole 21. It means the end of the guide hole 21 of the portion where the multi-purpose screw (s) is first inserted.

Here, the stopper line may be formed in a ring shape, the outer diameter of the stopper line corresponds to the outer diameter of the head portion of the multi-purpose screw (s), the inner diameter of the stopper line corresponds to the outer diameter of the fastening portion of the multi-purpose screw (s) This is desirable.

Accordingly, since the head of the multi-purpose screw s is engaged with the stopper line of the guide part 20, the insertion depth of the multi-purpose screw s to be inserted into the insertion groove k1 may be limited.

Here, when the sum of the length of the guide hole 21 and the depth of depression of the insertion groove k1 is less than the length of the fastening portion of the multi-purpose screw s, the end of the multi-purpose screw s is a nerve tissue, There is a risk of contact with the tooth root and maxillary sinus membrane. Accordingly, there is a concern that the nerve tissue, the roots, and the maxillary sinus membrane are damaged and infected, resulting in a serious risk to the life of the person to be treated.

Therefore, it is preferable that the sum of the length of the guide hole 21 and the depth of depression of the insertion groove k1 is greater than or equal to the length of the fastening portion of the multi-purpose screw s, most preferably substantially corresponding to each other. Through this, the multi-purpose screw (s) through the guide hole (21) is guided to the insertion groove (k1) formed at a safe point spaced apart from the nerve tissue, roots, and maxillary sinus membrane, so that the safety of the procedure can be significantly improved. .

In addition, the guide part 20 is preferably manufactured in a detachable manner so that the guide part 20 is easily separated from the multi-purpose screw (s) after the multi-purpose screw (s) is inserted into the alveolar bone of the target arch. .

At this time, when the guide part 20 is provided as an integral type rather than a detachable type, the alignment holder part 10 fixed to the target arch tooth 3 and the multi-purpose screw s are inserted by the guide hole 21 in the inserted state. There is a fear that the screw guider 100 cannot be separated from the oral cavity.

Here, it is preferable that the guide part 20 includes a first guide part 20a and a second guide part 20b that are detachably coupled to each other. In this case, the first guide portion 20a and the second guide portion 20b substantially correspond to the virtual first guide portion and the virtual second guide portion, respectively, and have the same size and shape.

In addition, the first guide portion 20a and the second guide portion 20b are mutually divided along the circumferential direction, and the cross-section when the first guide portion 20a and the second guide portion 20b are joined to each other The shape may be formed in a circular shape.

Here, each opposing surface of the first guide portion 20a and the second guide portion 20b may be formed by cutting along a radial direction. In this case, an angle in which one side facing surface of the first guide unit 20a and the other side facing surface facing the second guide unit 20b and the other side facing surface may be formed at a predetermined first angle. In addition, an angle in which one facing surface of the second guide portion 20a and the other facing surface facing the first guide portion 20a and the other facing surface may be formed at a second predetermined angle. In this case, it is preferable that the sum of the first angle and the second angle is formed to be 360°.

For example, cross-sections of the first guide part 20a and the second guide part 20b may be provided in an arc shape, respectively, and the first guide part 20a and the second guide part 20b The sizes may be formed identically to each other.

In addition, the first guide part 20a is integrally connected to the end of the alignment rod part 30, and the second guide part 20b is provided to be detachably coupled to the first guide part 20a. I can. Of course, in some cases, the second guide part may be connected to the alignment rod part 30, and the first guide part may be provided to be detachably coupled to the second guide part.

And the guide hole 21 is the first guide part 20a and the second guide part 20b which are selectively attached and detached from each other so that the guide part 20 can be easily separated after insertion of the multipurpose screw s. ) It is preferably formed on the opposite surface 22 between.

Here, a first guide groove 21a recessed in a semicircular cross-section along the length direction may be formed on the opposite surface 22a of the first guide portion 20a. In addition, a second guide groove 21b recessed in a semicircular cross-section along the length direction may be formed on the opposite surface 22b of the second guide portion 20b facing the first guide groove 21a. .

Accordingly, when the first guide groove 21a and the second guide groove 21b face each other and the first guide portion 20a and the second guide portion 20b contact each other, the first guide groove The guide hole 21 may be selectively formed in the inner circumference of the guide part 20 by the (21a) and the second guide groove (21b).

In addition, the first guide part 20a and the second guide part 20b are clamped to each other on the opposite surfaces 22a and 22b of the first guide part 20a and the second guide part 20b. It is preferable that each of the detachable means 23 is formed.

Here, the detachable means 23 may include a detachable protrusion 23a formed on one of the first guide part 20a and the second guide part 20b. In addition, the detachable means 23 may include a detachable groove 23b formed in the other of the first guide part 20a and the second guide part 20b so that the detachable protrusion 23a is coupled. have. At this time, if the detachable means is a structure that can be coupled to each other, it is not limited to the protrusion and the groove.

For example, the detachable groove 23b may be recessed at one side of the facing surface 22a of the first guide part 20a. In addition, the detachable protrusion 23a may extend on one side of the opposite surface 22b of the second guide part 20b facing the detachable groove 23b. Through this, the first guide portion 20a and the second guide portion 20b may be selectively attached and detached through the attaching and detaching means 23.

In addition, it is preferable that a fixing groove 24 is formed on one side of the outer surface of the guide part 20 which is recessed radially inwardly along the circumferential direction. In this case, the fixing groove 24 preferably includes a first fixing groove 24a and a second fixing groove 24b.

In detail, on one side of the outer surface of the first guide portion 20a and the second guide portion 20b, a first fixing groove portion 24a and a second fixing groove portion 24b formed continuously recessed from each other in a radial direction along a circumferential direction. ) Is preferably formed respectively.

In addition, the screw guider 100 further includes an elastic band 40 made of an elastic material inserted into the fixing groove 24 so that the first guide portion 20a and the second guide portion 20b are fixed to each other. It is desirable to do it.

Through this, the elastic band 40 may be selectively fitted into the fixing groove 24 which is recessed radially inwardly along the circumferential direction on one side of the outer surface of the guide part 20. Accordingly, the first guide portion 20a and the second guide portion 20b may be selectively coupled to each other by the elastic band 40 selectively fitted to the fixing groove portion 24.

Therefore, the multi-purpose screw (s) is guided by the guide part 20 in the state in which the alignment holder part 10 is joined to the target arch tooth 3, and after being inserted into the alveolar bone of the target arch, the multi-purpose screw The guide portion 20 surrounding (s) is detachably separated and removed. Through this, since the alignment holder 10 is easily separated from the tooth 3, the screw guider 100 can be quickly and easily installed and removed in the oral cavity, so that the usability can be remarkably improved.

Here, the guide part 20 may be integrally connected by the alignment rod part 30 in a state in which the alignment holder part 10 is engaged with the target arch tooth 3 to be disposed outside the oral cavity. At this time, as a separate traction device for traction of soft tissues such as lips to the outside of the oral cavity is provided and installed in the oral cavity, the oral cavity of the subject to be treated may be exposed to the outside.

On the other hand, the alignment rod part 30 is a preset alignment distance between the alignment holder 10 and the guide 20 so that the outlet of the guide hole 21 is aligned toward the preset placement point k. It is preferable that both ends are connected for fitting. In this case, the outlet of the guide hole 21 refers to an end of the guide hole 21 in contact with the insertion groove k1.

In this case, it is preferable that the length of the alignment rod part 30 is aligned with a predetermined length so that the guide part 20 is aligned at a position and an arrangement angle corresponding to the placement point k.

In detail, the alignment rod part 30 has one end integrally connected to the outer part 12b of the alignment holder part 10, and the other end of the alignment rod part 30 is attached to the guide part 20 so as to provide a supporting force to the guide part 20. It is desirable to be connected integrally. Here, the alignment rod part 30 substantially corresponds to the virtual alignment rod part 30d and has the same size and shape.

In addition, the alignment rod part 30 is provided as a bar-shaped rigid body, and may be provided in at least one or more. In this case, it is preferable to understand that the rigid body is a material that is not easily bent or damaged by an external force.

For example, when the alignment rod part 30 is provided in two, one end of the alignment rod part 30 is integrally connected to one side in the width direction of the alignment holder part 10, and the other end is a guide part ( 20) can be connected integrally. In addition, one end of the other of the alignment rod units 30 may be integrally connected to the other side in the width direction of the alignment holder unit 10 and the other end may be integrally connected to the guide unit 20.

Here, an angle formed by each of the alignment rod portions 30 and the alignment holder portions 10 provided in a plurality may be disposed at an optimum angle for providing a supporting force to the guide portion 20. For example, as the entire shape of the alignment rod part 30 and the alignment holder part 10 is formed in a triangular shape, and the guide part 20 is disposed at one end of the triangle, a strong support force for the guide part 20 Can be provided.

In addition, the length of the alignment rod part 30 is preferably formed to a predetermined length so that the end of the guide part 20 is opposite to the placement point (k) of the multi-purpose screw (s) to be aligned and disposed.

Accordingly, the guide portion 20 is provided with a predetermined length so as to face the insertion point k of the multipurpose screw (s) to mediate the connection between the alignment holder portion 10 and the guide portion 20 The alignment rod part 30 is provided. Therefore, the support force of the alignment holder portion 10 that is fitted to the target arch tooth 3 by the alignment rod portion 30 is transmitted to the guide portion 20 for guiding the placement of the multipurpose screw (s). I can.

At this time, the terms such as "include", "comprise" or "have" described above mean that the corresponding component may be present unless otherwise stated, excluding other components. It should not be construed as being able to include other components. All terms, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art, unless otherwise defined, to which the present invention belongs. Terms generally used, such as terms defined in the dictionary, should be interpreted as being consistent with the meaning of the context of the related technology, and are not interpreted as ideal or excessively formal meanings unless explicitly defined in the present invention.

As described above, the present invention is not limited to each of the above-described embodiments, and it is possible to be modified and implemented by those of ordinary skill in the art without departing from the scope claimed in the claims of the present invention. And, these modifications are within the scope of the present invention.

1d: 3D work image 2: Gum
2d: gum image 3: teeth
3d: tooth part image 4d: alveolar bone image
5d: maxillary sinus image 10: alignment holder
11: fitting groove 20: guide portion
21: guide hole 22: facing surface
23: attachment and detachment means 24: fixing groove
30: alignment rod portion 40: elastic band
100: screw guide s: multipurpose screw
k: Placement point k1: Placement groove

Claims (10)

An alignment holder disposed to surround the target arch tooth so as to be fixed to the surface of at least one target arch tooth, and in which a fitting groove part is recessed in correspondence with the dental arch profile of the target arch;
It is provided as a hollow body, but is used for the multi-purpose according to a predetermined arrangement angle toward the placement point of the multi-purpose screw set based on the three-dimensional work image planned to guide the multi-purpose screw to be placed in the alveolar bone of the target arch. A guide portion through which a guide hole is formed with an inner diameter corresponding to the outer diameter of the screw; And
The alignment holder portion and at least one alignment rod portion connected at both ends for matching a predetermined alignment distance to the guide portion so that the outlet of the guide hole is aligned toward a preset placement point,
The guide part includes a first guide part integrally connected to the other end of the alignment rod part, and a second guide part detachably coupled to the first guide part, wherein the guide hole is provided with the guide part after insertion of the multipurpose screw. It is formed on the opposite surface between the first guide portion and the second guide portion so as to be easily separated,
The first guide part and the second guide part are mutually divided along the circumferential direction, and when the first guide part and the second guide part are joined to each other, the cross-sectional shape is formed in a circular shape, and the first guide part and the second guide part are formed in a circular shape. Each opposing surface of the guide is formed by cutting along the radial direction,
A first guide groove is formed in a semicircular cross-section along a longitudinal direction on the opposite surface of the first guide portion, and a second guide is formed in a semicircular cross-section along the longitudinal direction on the opposite surface of the second guide portion opposite to the first guide groove. A groove is formed in the depression,
Attaching and detaching means for clamping to each other are formed on each opposite surface of the first guide part and the second guide part, and one side of the outer surface of the first guide part and the second guide part is continuous radially inward along the circumferential direction. A screw guider, further comprising an elastic band made of an elastic material to be inserted into the fixing groove so that the fixing groove formed in the recessed part is formed, and the first guide part and the second guide part are fixed to each other. delete delete The method of claim 1,
The sum of the length of the guide hole and the depth of depression of the insertion groove portion drilled corresponding to the insertion point is formed substantially corresponding to the length of the fastening portion of the multipurpose screw,
A screw guider, characterized in that a stopper line is formed at the entrance of the guide hole so that the head of the multipurpose screw is engaged. The method of claim 1,
The alignment rod portion is provided with a bar-shaped rigid body,
The length of the alignment rod portion is a screw guider, characterized in that formed in a preset length so that the outlet of the guide hole is aligned toward the preset placement point. The method of claim 1,
The alignment holder part is molded and fixed to the surface of at least one target arch tooth corresponding to the placement point of the multi-purpose screw,
The fitting groove portion is a screw guider, characterized in that the depression is formed between the inner portion and the outer portion of the alignment holder portion corresponding to the dental arch profile of the target arch. A first step of obtaining a scanning image and a CT image of a target arch, and obtaining a three-dimensional working image by overlapping and matching the obtained scanning image and the CT image based on a common portion;
A virtual alignment holder in which a virtual fitting groove portion corresponding to the dental arch profile of the target arch is set in the three-dimensional working image, and a virtual arrangement angle in which the arrangement angle is aligned in correspondence with the placement point of the multi-purpose screw to be placed in the alveolar bone of the target arch. Both ends of the guide part and the virtual guide hole are connected to the virtual alignment holder part and the virtual guide part for matching a preset alignment distance to the virtual alignment holder part and the virtual guide part so that the exit of the virtual guide hole is aligned toward a preset placement point. A second step of generating design information of a screw guider including a virtual alignment rod unit; And
Based on the design information of the screw guider, a screw guider including a real alignment holder corresponding to the virtual alignment holder and a real guide corresponding to the virtual guide unit and connected to each other with the alignment holder is manufactured. Including three steps,
In the second step, the virtual guide portion is virtually aligned at an arrangement angle corresponding to the placement point, and a virtual guide hole set to an inner diameter corresponding to the outer diameter of the multipurpose screw is virtually arranged, and the virtual guide portion Including the steps of designing each of a virtual first guide portion and a virtual second guide portion separated from each other based on the virtual guide hole,
The third step includes manufacturing a guide hole formed on the basis of the virtual guide hole by forming the guide portion, wherein the guide portion corresponds to the virtual first guide portion and the virtual second guide portion, respectively. A method of manufacturing a screw guider, comprising: a first guide portion and a second guide portion having a size and shape that are detachably coupled to each other. The method of claim 7,
The second step,
The method of manufacturing a screw guider, comprising the step of virtually disposing the virtual fitting groove part in an inner profile corresponding to the dental arch profile of the target arch on one surface of the virtual alignment holder part facing the virtual target arch tooth surface. . delete The method of claim 7,
In the second step, the placement point is set in the three-dimensional work image, and the virtual guide hole is virtually aligned and arranged in correspondence with the placement point,
The method of manufacturing a screw guider, characterized in that the depression depth, diameter, and angle of the implantation point are set apart from the nerve tissue and the tooth root inside the target arch based on the tooth root image and the alveolar bone image included in the three-dimensional working image.

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