KR20140130582A - Apparatus for acquiring image information using implant - Google Patents

Abstract

Disclosed is an apparatus for acquiring image information for an implant. The apparatus for acquiring image information for an implant according to the present invention includes: an impression tray unit inserted into the mouth of a dental patient undergoing an implant procedure to receive an impression material acquiring a mouth shape of the dental patient; a first image acquiring unit to acquire first image information on a mouth structure of the dental patient while the impression tray unit is inserted into the mouth of the dental patient; a second image acquiring unit to acquire second image information on a mouth model while the impression tray unit is inserted into a mouth model manufactured in the mouth shape of the dental patient, acquired by the impression material; and a reference unit coupled with the impression tray unit to display first image information and second image information as a matching reference of the first image information and the second image information.

Description

[0001] Apparatus for acquiring image information for implant [0002]

The present invention relates to an image acquisition device for an implant, and more particularly, to an implant image acquisition device capable of easily and accurately matching image information obtained from an oral cavity model of an assistant's mouth structure Information acquiring apparatus.

A dental implant is a substitute that restores when the original tissue is lost, but in dentists it refers to a series of procedures for implanting an artificial tooth.

In order to replace the missing root (root), a tooth fixture, made of titanium or the like, which has no rejection to the human body, is planted in the alveolar bone that has exited the tooth, and then the artificial tooth is fixed to restore the function of the tooth .

In general prostheses or dentures, the surrounding teeth and bones are damaged over time, but the implants do not injure the surrounding dental tissue, and they have the same function and shape as the natural teeth, but do not have cavities. Therefore, they can be used semi-permanently.

The artificial tooth procedure (also referred to as an implant or implant procedure) varies depending on the type of fixture, but after a predetermined drill is used to perforate the fixation position, the fixture is placed on the alveolar bone to perform an artificial fusion to the bone, After the abutments are combined, it is common to finish the abutment with a final prosthesis.

Dental implants enhance the function of dentures in single-tooth restorations, as well as in partial and total toothless patients, improve the aesthetic aspects of dental prosthesis restoration, and further dissipate excessive stresses on the surrounding supporting bone tissue It helps to stabilize the dentition as well as sikim.

Such a dental implant generally includes a fixture to be placed as an artificial root, an abutment to be coupled onto the fixture, an abutment screw to fix the abutment to the fixture, Of the artificial teeth. Here, the abutment is engaged with the fixture before the abutment is coupled to the fixture, that is, during the period until the fixture is fusion-bonded to the alveolar bone, thereby maintaining the engagement state.

The fixture, which is a component of the dental implant, serves as an artificial root as a part to be placed in a drill hole formed in the alveolar bone using a drill or the like at a position where the implant is performed. Therefore, the fixture should be securely mounted on the alveolar bone.

Thus, a screw thread is formed on the outer surface of the fixture so as to be firmly engaged with the inner wall portion of the alveolar bone forming the drill hole. Such a screw portion is inserted into the alveolar bone to securely fix the fixture and the alveolar bone, as well as to increase the contact area between the fixture and the alveolar bone, thereby enhancing the fixing force of the fixture to the alveolar bone, particularly the initial stability do.

In the dental implant procedure, a hole is drilled in the alveolar bone using a drill, a fixture is placed in the drilled hole, and then, when the fusion is completed, the alveolar bone is bonded to the fixture and finally the artificial tooth (prosthesis) Lt; / RTI >

In order to manufacture a guide stent for guiding the position, direction and depth of the fixture to the alveolar bone in the dental implant, anatomical information of the subject such as CT or MRI In addition, there are many cases in which image data of an oral cavity model simulating the tissue of the mouth of a patient is required in many cases.

The image information including the anatomical information of the physician and the information obtained by 3D scanning of the mouth model simulating the intraoral tissue of the patient are used as information for producing the guide stent in CAD / CAM equipment.

In other words, the guide stent should be designed to have a shape corresponding to the gums, teeth, and bones. Therefore, the guide stent must be designed using an image containing anatomical information such as CT.

However, images containing anatomical information such as CT or MRI may show image impurities or distortions such as metal artifacts when the resolution is low or the teeth are made of metal. In order to compensate for this, We use the data obtained by scanning the mouth model three-dimensionally.

In order to use the information obtained by 3D scanning of the oral cavity model, which is based on the image information including the anatomical information of the subject, and the oral tissue of the subject, the CAD / CAM equipment coordinate system and the anatomical information of the patient are included And the coordinate of the information obtained by 3D scanning of the mouth model simulating the in-vivo tissue of the recipient must be performed.

That is, a matching process that coincides the coordinates of the information obtained by the 3D model scanning of the oral cavity model of the subject with the image information including the anatomical information of the subject who has different coordinates must be performed indispensably.

However, in the related art, there is a problem that the process of matching the image information including the anatomical information of the wearer with the information obtained by the three-dimensional scanning of the mouth model simulating the mouth tissue of the wearer is time consuming.

Therefore, it is necessary to develop a device for acquiring image information for implants that can quickly and easily match the information obtained by the 3D model scanning of the oral cavity model of the patient with the image information including the anatomical information of the patient.

Patent Publication No. 10-2010-0042912 (Wonjin Lee, Tae Il Kim, Dae Hyun Kim), Apr. 28, 2010

SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to provide an apparatus and method for acquiring image information for an implant that can easily and quickly match information obtained by three-dimensional scanning of an oral cavity model based on image information including anatomical information of a subject, .

According to an aspect of the present invention, there is provided an image forming apparatus, comprising: a tray portion for receiving an impression material inserted into an oral cavity of a person to be examined and acquiring an oral shape of the subject; A first image acquiring unit acquiring first image information on the oral cavity structure of the subject while the lifting tray is inserted into the mouth of the subject; A second image acquiring unit for acquiring second image information of the oral cavity model in a state where the pull-up tray is inserted into the oral cavity model of the subject who is acquired by the impression material; And a reference part coupled to the pull-up tray part and being displayed on the first image information and the second image information so as to be a reference for matching the first image information and the second image information, May be provided.

The reference portion may be disposed outside the oral cavity of the subject.

The reference portion may include a polygonal reference block.

The reference block comprising: a first edge; A second edge coupled to the first edge; And a third edge coupled to the first and second edges.

The first edge, the second edge, and the third edge may be vertically connected to each other.

The reference block may be provided in a trapezoidal hexahedron shape having a trapezoidal cross section.

The one side wall of the reference block may be formed with a coupling groove into which a part of the pulling tray is inserted.

The reference block may be made of a radiopaque material.

A coating film of a radiopaque material may be provided on an outer wall of the reference block.

The pull-up tray portion includes: a first side wall portion; An impression material support portion connected to the first side wall portion and supporting the impression material; A second sidewall portion connected to the impression material support portion; And a first handle coupled to the first sidewall portion.

The reference portion may be provided in a trapezoidal hexahedron shape having a trapezoidal cross section, and one side wall of the reference block may be formed with a coupling groove into which the distal end of the first handle is inserted.

The first sidewall portion may include a plurality of first ribs protruding from an inner surface.

The second side wall portion may include a plurality of second ribs protruding from the inner side.

The impression material support portion may be formed of a nonwoven fabric or a mesh.

The lifting tray portion includes: an upper abutment tray; A second handle coupled to the topographic tray; A lower tray disposed below the upper deformation tray; A third handle coupled to the mandible tray; And an interval adjusting unit which is provided in any one of the upper and lower tray and the lower tray and is connected to the other to adjust the interval between the upper and lower tray and the lower tray.

Wherein the interval adjusting unit comprises: a support plate coupled to the mandible tray; An up / down moving unit coupled to the support plate so as to be able to up / down; And a contact plate coupled to the upper deformation tray and contacting the up / down moving unit.

The up / down moving unit includes a moving screw that is engaged with the support plate on the support plate; And a contact pin provided at a distal end of the moving screw.

The reference portion may be formed in a trapezoidal hexahedron shape having a trapezoidal cross section, and one side wall of the reference block may be formed with a coupling groove into which the distal end of the second handle or the third handle is inserted.

The embodiments of the present invention may be modified such that the matching between the first image information including the anatomical information of the subject and the second image information obtained by three-dimensional scanning of the mouth model simulating the intraoral structure of the subject is referred to as first image information and second image information The matching time of the first image information and the second image information can be shortened and the time of the dental implant can be shortened to perform the one-day implant operation .

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic view showing an image information acquiring apparatus for an implant according to a first embodiment of the present invention; FIG.
Fig. 2 is a view showing the pulling tray of Fig. 1. Fig.
Fig. 3 is a view of Fig. 2 viewed from the other direction. Fig.
4 is a perspective view of the reference portion of FIG.
5 is a front view of Fig.
6 is a view showing an impression tray of an image information acquiring apparatus for implants according to a second embodiment of the present invention.
Fig. 7 is a view of Fig. 6 taken in the other direction.
Fig. 8 is a view showing the mandible tray of Fig. 6; Fig.
Fig. 9 is a view showing the image evacuation tray of Fig. 6; Fig.

In order to fully understand the present invention, operational advantages of the present invention, and objects achieved by the practice of the present invention, reference should be made to the accompanying drawings and the accompanying drawings which illustrate preferred embodiments of the present invention.

Hereinafter, the present invention will be described in detail with reference to the preferred embodiments of the present invention with reference to the accompanying drawings. In the following description, well-known functions or constructions are not described in order to avoid unnecessary obscuration of the present invention.

FIG. 1 is a view schematically showing an image information acquiring apparatus for an implant according to a first embodiment of the present invention, FIG. 2 is a view showing the pulling tray of FIG. 1, Fig. 4 is a perspective view of the reference portion of Fig. 1, and Fig. 5 is a front view of Fig.

1 to 5, an image acquisition device for implants according to an embodiment of the present invention includes an impression material (not shown) that is inserted into the mouth of a subject H and acquires a mouth shape of the person H, A first image acquiring unit that acquires first image information on the oral cavity structure of the subject H in a state where the pulling tray unit 110 is inserted into the mouth of the subject H, The pulling tray unit 110 is inserted into the oral cavity model M of the patient H obtained by the impression material (not shown) A second image acquiring unit 130 for acquiring second image information for the first image information and the second image information for the second image information, And a reference unit 140 displayed on the image information.

The pulling tray portion 110 receives an impression material (not shown) inserted into the mouth of the subject H and acquiring the mouth shape of the person H to be examined.

The pulling tray unit 110 includes a first sidewall portion 111 and an impression material support portion 112 connected to the first sidewall portion 111 and supporting an impression material (not shown) And a first handle 114 coupled to the first sidewall 111. The first sidewall 111 and the second sidewall 113 are coupled to each other.

The first sidewall portion 111 is provided in an arc shape suitable for the dental arch shape of the subject H and has a shape which decreases in height from the central portion to the distal end portion.

The first side wall portion 111 includes a plurality of first ribs 115 protruding from the inner side. This first rib 115 widens the contact area between the first sidewall and the impression material (not shown) so that an impression material (not shown) can be stably received in the imprinting tray.

The impression support 112 is connected to the first side wall 111 and supports an impression material (not shown). In this embodiment, the impression material support 112 is provided as a nonwoven fabric or mesh.

The second side wall portion 113 is connected to the impression material support portion 112. The second side wall portion 113 includes a plurality of second ribs 116 protruding from the inner side. The second rib 116 expands the contact area between the second sidewall and the impression material (not shown) so that the impression material (not shown) can be stably received in the imprinting tray.

The first handle 114 is coupled to the first sidewall 111 and the first handle 114 is inserted into the oral cavity of the subject H when the tray 110 is pulled into the mouth of the subject H, And is protruded from the first side wall portion 111 so as to be exposed to the outside.

The impression material (not shown) directly contacts the dentition of the person H to acquire a shape such as dentition. An oral model (M) is produced by pouring gypsum or the like into an impression material (not shown) having a shape such as teeth.

The first image acquiring unit 120 acquires first image information on the oral cavity structure of the subject H in a state where the pulling tray unit 110 is inserted into the mouth of the subject H. In the present embodiment, the first image acquiring unit 120 uses computed tomography (CT), and the scope of the present invention is not limited thereto. May be used as the first image acquiring unit 120 of the embodiment.

In the present embodiment, the first image information is three-dimensional image information about an anatomical structure (alveolar bone) in which a fixture is placed in the mouth of the subject H, and the position, Direction and depth are planned.

The second image acquiring unit 130 acquires the oral image of the oral cavity of the patient M in a state where the pulling tray unit 110 is inserted into the oral cavity model M of the patient H obtained by the impression material The second image information is acquired. In this embodiment, the second image acquiring unit 130 uses a three-dimensional scanner. However, the scope of the present invention is not limited thereto, and the scope of the present invention is not limited. The information obtaining apparatus can be used as the second image obtaining unit 130 of the present embodiment.

In the present embodiment, the second image information is three-dimensional image information on the surface shape of the teeth of the subject H, and the position, orientation, and depth of the fixture are determined based on the three- The shape and structure of the guide stent (not shown) is planned.

The reference unit 140 is coupled to the pull-up tray unit 110 and is displayed on the first image information and the second image information so as to be a matching reference of the first image information and the second image information. At this time, the reference portion 140 is disposed outside the mouth of the subject H so that the reference portion 140 can be clearly displayed on the first image information and the second image information.

The reference unit 140 serves as a reference for matching data obtained through the first image acquiring unit 120 and the second image acquiring unit 130. That is, the first image information and the second image information are matched with reference to the reference unit 140.

In this embodiment, the reference unit 140 includes a reference block 141 having a polyhedral shape. The reference block 141 includes a first edge 142, a second edge 143 connected to the first edge 142, a third edge 144 connected to the first and second edges 143, .

The first edge 142, the second edge 143, and the third edge 144 are perpendicularly connected to each other. The first corner 142, the second corner 143 and the third corner 144 which are vertically connected to each other can be recognized in the X-axis, Y-axis and Z-axis directions of the reference coordinate system, And the coordinates of the data obtained through the second image acquiring unit 130 may be matched.

In this embodiment, the reference block 141 is provided in a trapezoidal hexahedron shape having a trapezoidal cross section. Since the length of the upper surface of the reference block 141 in the shape of a trapezoidal cube is smaller than the length of the bottom surface, it is easy to distinguish the reference block 141 from the upper side to the lower side of the reference block 141. In the matching of the first image information and the second image information, It is possible to easily recognize the vertical relationship of the information.

Further, a coupling groove 145 into which the distal end of the first handle 114 is inserted is formed on one side wall of the reference block 141. That is, the distal end of the first handle 114 is fitted into the coupling groove 145, so that the reference block 141 is coupled to the pulling tray 110. In addition, the reference block 141 and the pull-up tray may be bonded by bonding for stable coupling between the reference block 141 and the pull-up tray.

The reference block 141 is also made of a radiation-impermeable material. As described above, the reference block 141 is made of a radiopaque material, so that the reference block 141 can be clearly displayed on the first image information or the second image information.

 A coating film of a radiopaque material is provided on the outer wall of the reference block 141. This coating film is transparent to radiation, so that the reference block 141 can be clearly displayed in the first image information or the second image information.

The operation of the image information acquiring apparatus for implant according to the first embodiment of the present invention having such a configuration will be described.

The first image acquiring unit 120 acquires an image of the impression material (not shown) by inserting the impression material tray 110 containing the impression material (not shown) into the oral cavity of the recipient H, The first image information on the oral cavity structure of the subject H is acquired.

The tracing tray used in the subject H previously used for the oral cavity model M of the patient H obtained by the impression material (not shown) is inserted into the oral cavity model M again And acquires the second image information through the second image acquiring unit 130.

The guide stent for guiding the placement position, direction, and depth of the fixture described above is manufactured through CAD / CAM. In order to perform the CAD / CAM operation, the coordinates of the first image information and the coordinates of the second image information are stored in the reference block 141, As a reference.

That is, the first image information and the second image information can be easily matched by matching the coordinates of the reference block 141 displayed in the first image information with the coordinates of the reference block 141 displayed in the second image information.

Therefore, in the anatomical image information of the oral part of the subject H, which is obtained from the first image information, three-dimensional numerical information about the position, direction and depth of the planned fixture and the oral model M Dimensional coordinate information on the reference block 141 is used as a reference, the anatomical image information and the surface shape of the teeth of the subject H can be easily matched with each other. As a result, The guide stent can be manufactured quickly and easily according to the three-dimensional numerical information about the position, the direction and the depth of the guide stent.

As described above, the apparatus for acquiring image information for an implant according to the present invention includes first image information including anatomical information of a subject H, second image information obtained by three-dimensional scanning of an oral cavity model of a subject H, The matching time of the first image information and the second image information can be shortened by performing the matching of the first image information and the second image information with reference to the reference unit 140 displayed on the first image information and the second image information, And thus the one-day implant procedure can be performed.

The matching between the first image information including the anatomical information of the subject and the second image information obtained by scanning the mouth model three-dimensionally based on the intraoral structure of the subject is compared with the reference portion displayed in the first image information and the second image information Thereby making it possible to produce a precise guide stent and shorten the procedure time of the dental implant, thereby enabling a one-day implant procedure.

6 is a view showing a tray for pulling up an image information acquiring apparatus for implants according to a second embodiment of the present invention, FIG. 7 is a view of FIG. 6 viewed from another direction, FIG. 8 is a cross- And Fig. 9 is a view showing the image evacuation tray of Fig.

The pulling tray 210 according to the present embodiment is mainly used for a non-teeth patient or a dentist H who has many tooth defects.

In this embodiment, the pulling tray unit 210 includes a top handling tray 211, a second pulling unit 212 coupled to the top handling tray 211, A third handle 214 coupled to the lower tray 213 and a second handle 214 coupled to the upper and lower tails 211 and 213 so as to be connected to the upper and lower tails 211, And an interval adjusting unit 215 for adjusting the interval between the trays 213.

The distal end of the second handle 212 or the third handle 214 is fitted into the coupling groove 145 of the reference block 141 so that the reference block 141 is inserted into the upper deformation tray 211 or the lower tray 213).

In this embodiment, the interval adjusting unit 215 includes a support plate 216 coupled to the lower tray 213, and an up / down / down / down moving unit 217 and a contact plate 218 coupled to the upper deformation tray 211 and contacting the up / down moving unit 217.

The up / down moving part 217 includes a moving screw 219 engaged with the supporting plate 216 on the supporting plate 216 and a contact pin R provided on the distal end of the moving screw 219 .

The handle N is coupled to the moving screw 219 for convenience of operation with respect to the moving screw 219.

As described above, the pulling tray unit 210 according to the present embodiment is configured such that the gap adjusting unit 215 adjusts the gap between the upper and lower tear-off trays 211 and 213, In a state in which the distance between the upper and lower tear off trays 211 and 213 in the state where the pulling tray 210 is inserted into the mouth of the recipient is inserted into the oral cavity model M of the subject H, The distance between the upper and lower deodorizing tray 211 and the lower tray 213 can be the same, so that the first image information and the second image information can be easily matched.

Although the present invention has been described in detail with reference to the above drawings, the scope of the scope of the present invention is not limited to the above-described drawings and description.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the invention. Accordingly, such modifications or variations are intended to fall within the scope of the appended claims.

110, 210: lifting tray part 111: first side wall part
112: impression material supporting portion 113: second side wall portion
114: first handle 115: first rib
116: second rib 120: first image acquiring unit
130: second image acquisition unit 140:
141: Reference block 142: First corner
143: second corner 144: third corner
145: coupling groove 211:
212: second handle portion 213: lower tray
214: Third handle 215:
216: support plate 217: up / down moving part
218: contact plate 219: moving screw
H: Physician N: Handle
M: Oral model

Claims (18)

An impression tray portion which is inserted into the mouth of the subject and receives an impression material for acquiring a mouth shape of the subject;
A first image acquiring unit acquiring first image information on the oral cavity structure of the subject while the lifting tray is inserted into the mouth of the subject;
A second image acquiring unit for acquiring second image information of the oral cavity model in a state where the pull-up tray is inserted into the oral cavity model of the subject who is acquired by the impression material; And
And a reference unit coupled to the pull-up tray unit and being displayed on the first image information and the second image information so as to be a reference for matching the first image information and the second image information. The method according to claim 1,
Wherein the reference portion is disposed outside the oral cavity of the subject. The method according to claim 1,
Wherein the reference portion includes a polygonal reference block. The method of claim 3,
The reference block includes:
A first edge;
A second edge coupled to the first edge; And
And a third edge connected to the first and second edges. 5. The method of claim 4,
Wherein the first edge, the second edge, and the third edge are vertically connected to each other. The method of claim 3,
Wherein the reference block is provided in a trapezoidal hexahedron shape having a trapezoidal cross section. The method according to claim 6,
And an engaging groove into which a part of the pulling tray is inserted is formed on one side wall of the reference block. The method of claim 3,
Wherein the reference block is made of a radiopaque material. The method of claim 3,
Wherein a coating film of a radiopaque material is provided on an outer wall of the reference block. The method according to claim 1,
The lifting tray unit includes:
A first side wall portion;
An impression material support portion connected to the first side wall portion and supporting the impression material;
A second sidewall portion connected to the impression material support portion; And
And a first grip portion coupled to the first side wall portion. 11. The method of claim 10,
The reference portion is provided in a trapezoidal hexahedron shape having a trapezoidal cross section,
And an engaging groove into which the distal end of the first handle is inserted is formed on one side wall of the reference block. 11. The method of claim 10,
Wherein the first sidewall portion includes a plurality of first ribs protruding from an inner surface thereof. 11. The method of claim 10,
Wherein the second side wall portion includes a plurality of second ribs protruding from the inner side. 11. The method of claim 10,
Wherein the impression material supporting portion is formed of a nonwoven fabric or a mesh. The method according to claim 1,
The lifting tray unit includes:
An abuse tray;
A second handle coupled to the topographic tray;
A lower tray disposed below the upper deformation tray;
A third handle coupled to the mandible tray; And
And an interval adjusting unit that is provided at any one of the upper and lower tray and the lower tray and is connected to the other to adjust the interval between the upper and lower tails and the lower tray. The method according to claim 1,
Wherein the interval adjusting unit comprises:
A support plate coupled to the mandible tray;
An up / down moving unit coupled to the support plate so as to be able to up / down; And
And a contact plate coupled to the upper deformation tray and contacting the up / down moving unit. 17. The method of claim 16,
The up / down moving unit includes:
A moving screw engaged with the support plate on the support plate; And
And a contact pin provided at a distal end of the moving screw. 17. The method of claim 16,
The reference portion is provided in a trapezoidal hexahedron shape having a trapezoidal cross section,
Wherein one side wall of the reference block is formed with a coupling groove into which the distal end of the second handle or the third handle is inserted.

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