WO2017105031A1 - Procédé de conception de prothèse dentaire, appareil correspondant et support d'enregistrement sur lequel un procédé est enregistré - Google Patents

Procédé de conception de prothèse dentaire, appareil correspondant et support d'enregistrement sur lequel un procédé est enregistré Download PDF

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Publication number
WO2017105031A1
WO2017105031A1 PCT/KR2016/014322 KR2016014322W WO2017105031A1 WO 2017105031 A1 WO2017105031 A1 WO 2017105031A1 KR 2016014322 W KR2016014322 W KR 2016014322W WO 2017105031 A1 WO2017105031 A1 WO 2017105031A1
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WO
WIPO (PCT)
Prior art keywords
stent
guide
drill
fixture
guide hole
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Application number
PCT/KR2016/014322
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English (en)
Korean (ko)
Inventor
최규옥
정정운
김태환
Original Assignee
오스템임플란트 주식회사
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Publication of WO2017105031A1 publication Critical patent/WO2017105031A1/fr

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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C1/00—Dental machines for boring or cutting ; General features of dental machines or apparatus, e.g. hand-piece design
    • A61C1/08—Machine parts specially adapted for dentistry
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C13/00—Dental prostheses; Making same
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C3/00—Dental tools or instruments
    • A61C3/02—Tooth drilling or cutting instruments; Instruments acting like a sandblast machine

Definitions

  • the present invention relates to a method for designing a dental stent, an apparatus for the same, and a recording medium recording the same, and more particularly, to a method for designing a stent for guiding an implant procedure, an apparatus for the same, and a recording medium for recording the same. .
  • An implant procedure for replacing a tooth involves dissecting the gum to expose the alveolar bone and forming a hole in which a fixture is placed using a drill thereon.
  • an auxiliary device called a stent is used to guide the position of the hole formed in the alveolar bone and the fixture placement direction when the operator forms the hole.
  • FIG. 1 is a view showing a schematic structure of a stent according to the prior art.
  • the stent supports a guide hole 1a into which a drill is inserted when forming a hole in the alveolar bone, a stent guide 1b for guiding a drill position, and a stent guide. And a stent support 1c.
  • the stent support may be formed to cover the entire tooth, but may be partially formed to cover only the surrounding teeth and the surrounding gingival surfaces positioned close to the target tooth according to the number and position of the implant target tooth.
  • the stent is designed on a software program and output to a 3D printer or the like according to the result of the design.
  • the stent is designed according to the related art, regardless of the length of the fixture, that is, the height of the stand guide is uniformly designed. The depth of drilling was determined by the length of the drill used for the procedure.
  • the present invention has been proposed to solve the problems of the prior art that the drilling depth of the surgical kit increases the number of drills due to the depth of the drill only depends on the length of the drill, the drilling depth required during the procedure to the stent design It is an object of the present invention to provide a method for designing a dental stent, a device therefor, and a recording medium recording the same, which can reduce the type of a drill by reflection.
  • the above object is a method for designing a dental stent on a computer according to an aspect of the present invention, the step of determining the position and size of the guide hole is inserted into the drill for drilling the alveolar bone corresponding to the fixture placement position according to the implant plan ; Selecting a drill to be used for an implant procedure through a user input unit, or selecting a drill corresponding to a width of a fixture to be placed in an available drill list; And a height of a stent guide for guiding the drill position as a pillar member including the guide hole therein, according to the selected length of the drill, the length of the fixture, and the patient's gingival height. It can be achieved by a dental stent design method comprising the step of determining.
  • the dental stent design method may further include determining a gingival height of the patient based on a result of matching a computer tomography (CT) image and an oral scan image of the patient.
  • CT computer tomography
  • the step of determining the height of the stent guide, cutting of the structure of the drill including a cutting portion for cutting the alveolar bone, a stopper for limiting the drilling depth, and a guide portion for connecting the cutting portion and the stopper A length obtained by subtracting the length of the fixture and the gingiva height from the sum of the length of the guide portion and the guide portion may be determined as the height of the stent guide, and the size of the guide hole may be determined based on the width of the implanted fixture.
  • the step of determining the position and size of the guide hole, the cross-sectional line perpendicular to the panoramic curve passing through the point where a straight line extending vertically from the center of the position where the fixture is placed intersects with the panorama curve If the cross-section line or the intersection point does not exist, the position of the guide hole may be determined such that the cross-sectional line passing through the point on the panoramic curve closest to the straight line passes through the center of the guide hole.
  • the dental stent design method may further include extending both ends of the body of the stent guide by a predetermined length from the center of the guide hole in a direction parallel to the cross-sectional line.
  • the method may further include forming a side hole in the stent guide for inserting the side of the drill by a predetermined height from an upper end of the stent guide.
  • the method may further include forming recesses in each of the inner walls of the side holes to check the depth of drilling, and / or forming vertical holes in the vertical direction to confirm the insertion direction of the fixture in the lower side of the side holes.
  • the accuracy of the procedure can be achieved.
  • the above object can also be achieved by a computer-executable recording medium having recorded thereon a program for executing the dental stent design method described above.
  • the above object is the dental stent design device for performing a computer-aided design of the dental stent according to another aspect of the present invention
  • the size of the guide hole is inserted into the drill for drilling the alveolar bone corresponding to the fixture placement position And guide hole design unit for determining the position
  • a stent guide design for designing a stent guide for guiding a position of the drill as a pillar member including the guide hole therein, wherein the stent guide design includes: a gingival height of a patient; It can also be achieved by a dental stent design device that determines the height of the stent guide according to the length of the drill used for alveolar bone drilling and the length of the fixture to be implanted.
  • the dental stent designing device may further include a stent support design unit for forming the guide hole and designing the stent support on which the stent guide is seated.
  • the drill it is easy to insert the drill inside the guide hole, by providing a structure that can be confirmed the depth of the drilled through the drill and the implantation direction can be designed for the stent for the accuracy of the implant procedure.
  • FIG. 1 is a schematic illustration of a stent structure according to the prior art
  • FIG. 2 is a schematic illustration of a cross section in which the stent is mounted to the patient for the purpose of describing the stent structure
  • FIG. 3 is a block diagram of a dental stent design device according to an embodiment of the present invention.
  • FIG. 4 is a flow chart of a dental stent design method according to an embodiment of the present invention.
  • FIG. 5 is a view for explaining an example of a method of designing a guide hole
  • FIG. 6 schematically shows the structure of a drill to explain the height determination of the stent guide
  • FIG. 7 is a view showing a cross-sectional structure of the stent guide to explain an example of extending the stent guide
  • FIG. 8 is a cross-sectional view of the stent for explaining the structure of the stent guide in accordance with an embodiment of the present invention.
  • FIG 9 illustrates a portion of a stent in accordance with an embodiment of the present invention.
  • the dental stent designing apparatus performs a computer-assisted virtual design of the stent as an aid for guiding the drilling position, the drilling depth, and the fixture placement direction of the drill during the alveolar bone drilling operation for the implant procedure.
  • FIG. 2 is a reference diagram schematically illustrating a cross-section in which a stent is mounted on a patient for explaining the stent structure prior to explaining the dental stent design apparatus according to an embodiment of the present invention.
  • the stent is a pillar member including a guide hole (H) into which a drill for drilling alveolar bone is inserted for implantation, and a guide hole (H) therein, and a stent guide (G) for guiding a drill position. And a stent support (S) on which the stent guide (G) is seated to support the stent guide (G) and serves to protect the surrounding teeth and the gingiva by covering the patient's gingival and the peripheral teeth of the procedure. .
  • the stent support S and the stent guide G are formed with guide holes H at positions corresponding to each other.
  • a is the width of the fixture (F)
  • a ' is the diameter of the guide hole (H)
  • c is the height of the stent guide (H)
  • b and b' is the extension portion of the stent support (S)
  • d is the stent guide Means the thickness of (G).
  • the width of the fixture F may be referred to differently in terms of diameter, size, width, and the like.
  • the dental stent design apparatus 100 includes a guide hole design unit 10, a stent guide design unit 30, and a stent support design unit 50.
  • the guide hole design unit 10 designs a guide hole into which a drill is inserted for drilling the alveolar bone.
  • the guide hole may take various shapes that do not interfere with the rotational movement of the drill, including a circular shape depending on the shape of the cutting edge of the drill.
  • the guide hole design unit 10 determines the position and the size at which the guide hole is to be formed according to the fixture placement position and the fixture type according to the implant planning.
  • the stent guide design unit 30 designs a stent guide having a columnar shape including a guide hole according to the position and size of the guide hole determined by the guide hole design unit 10.
  • the stent guide design unit 30 determines the height of the stent guide in consideration of the patient's gingival height, the length of the fixture to be implanted, and the length of the drill used for drilling.
  • the stent guide design unit 30 is a structure for a smooth procedure, side holes for easy insertion of the drill into the guide hole during the procedure, recessed grooves to check the depth of drilling, vertical holes for checking the fixture placement direction Design.
  • the stent support design unit 50 designs the stent support on which the stent guide is seated.
  • a guide hole corresponding to the size and position determined by the guide hole design unit 10 is formed in the stent support, and the stent guide is seated so that the position of the guide hole of the stent guide and the position of the guide hole of the stent support correspond to each other.
  • the stent support may be formed to cover the entire tooth and the gingival surface, but may be partially formed to cover only the peripheral tooth and the peripheral gingival surface located close to the target tooth according to the number and position of the implant target tooth.
  • the stent support design unit 50 designs a stent support that matches the anatomical structure of the patient identified through the patient's oral scan image.
  • the tooth when there is a tooth around the target tooth, the tooth may be designed to cover a predetermined number of adjacent teeth, and when there is no adjacent tooth around the target tooth, a support extended by a predetermined length may be designed. can do.
  • one side is designed to extend by b so as to cover one adjacent tooth, and the other side where no teeth exist in the vicinity is designed to extend by b '.
  • FIGS. 4 and 5 to 9 are reference diagrams for describing a method of designing a dental stent.
  • the organic operation of the above-described dental stent design apparatus 100 will be described with reference to FIGS. 4 and 5 to 9.
  • the guide hole design unit 10 determines the position and size of the guide hole into which the drill is inserted in correspondence with the fixture placement position according to the implant plan (S10).
  • Guide holes are formed in the stent support and the stent guide for supporting the stent guide, the drill is inserted through the guide hole.
  • FIG. 5 is a view for explaining an example of a method of designing a guide hole.
  • the diameters d1 and d2 of the guide holes H1 and H2 are determined by the width of the fixture.
  • a panorama curve P and cross-sectional lines C1 and C2 perpendicular to the panorama curve P may be used.
  • the panoramic curve is a line required to generate the panoramic image along the arch, and the cross section is for generating the jaw cross-sectional image.
  • the panoramic curve P and the cross-sectional lines C1 and C2 are lines required to generate a panoramic image and a jaw cross-sectional image which are widely used in dental diagnosis. It can generate multiple cross-sectional lines perpendicular to the panoramic curve.
  • the position of the guide hole H1 is a straight line L1 extending vertically from the center O1 of the position where the fixture is placed according to the implant plan.
  • the cross section line C1 passing through the intersecting point a1 is determined to pass through the center of the guide hole H1.
  • the straight line L2 extending vertically from the center O2 of the position where the fixture is placed and the panoramic curve P cross each other. If not, the cross-sectional line C2 passing through the point a2 on the panorama curve P closest to the straight line L2 may be determined to pass through the center of the guide hole H2.
  • the drill selection to be used for the implant procedure is preceded (S20).
  • the drill used for the procedure may be directly selected by the user through a user input means (or not shown), or the preset criterion may be stored in advance and corresponding to the width and length of the fixture determined in the implant planning step. It may be implemented to select a suitable drill according to.
  • the stent guide design unit 30 determines the height of the stent guide according to the length of the selected drill, the length of the fixture, and the gingiva height of the patient (S30).
  • FIG. 6 is a view schematically showing the structure of a drill in order to explain the height determination of the stent guide.
  • the drill used for the implant procedure includes a bag portion 501 corresponding to the handle portion of the operator, a stopper 503 for limiting the drilling depth, and a cutting portion for cutting for drilling, including a cutting edge. 505, and a guide part 507 corresponding to the connection member connecting the stopper 503 and the cutting part 505 to each other.
  • the height of the stent guide is determined by subtracting the length of the fixture implanted from the sum of the lengths of the cutting part 505 and the guide part 507 and the gingiva height of the patient. At this time, since the boundary between the bone and the gingival cannot be clearly identified through the CT image of the patient, the height of the gingival is determined by matching the CT image of the patient with the oral scan image scanned by the oral scanner.
  • the dental stent design apparatus 100 and the method according to an embodiment of the present invention by varying the height of the stent guide according to the depth of drilling it is possible to significantly reduce the number of drills used for the procedure.
  • a structure for increasing the convenience of the procedure is further provided as compared to the stent according to the prior art.
  • the dental stent design method generates a side hole for easy insertion of the drill during the procedure to the stent guide, the recess groove to determine the depth of drilling, the vertical hole to identify the fixture placement direction It may further comprise the step.
  • FIG. 7 illustrates a cross-sectional structure of the stent guide to explain an example of extending the stent guide.
  • a guide hole H having a diameter as much as c is generated in the stent guide G, and both ends thereof extend from the center of the guide hole H by d. At this time, it extends by a predetermined length from the center of the guide hole (H) in a direction parallel to the cross-sectional line (C) used at the time of positioning the guide hole (H), the extended portion is the tooth is in contact with the cheek side It is a part that is coupled toward the buccal side.
  • the extension may be in the buccal direction up to the patient's gingival border, with the area of the stent support overlapping the extending portion removed.
  • the stent guide has both ends extending in parallel with each other, as shown in FIG. 7, so that the cross-sectional structure has a shape in which an arc shape and a rectangular shape are combined.
  • FIGS. 8 and 9 are cross-sectional views of the stent for explaining the structure of the stent guide according to an embodiment of the present invention
  • Figure 9 shows a portion of the stent according to the embodiment of the present invention.
  • a configuration formed on the stent guide will be described with reference to FIGS. 8 and 9.
  • the side holes (GL1 ⁇ GL3) is for insertion of the drill and should be formed on the buccal side, it is formed in one surface of the stent guide (G) extending in the above-described step having a planar shape. Since the drill can be inserted into the side through the side holes (GL1 ⁇ GL3) there is an advantage that the patient can open the posterior as little as possible during the procedure.
  • the side holes GL1 to GL3 are formed by a predetermined height from the top of the stent guides G1 to G3. In Figure 8 it can be seen that the side hole was formed leaving a length as long as the height (h) of the stent guide.
  • the reason why the side holes GL1 to GL3 are not generated in the entire height of the stent guide is to secure a space for forming the vertical holes GV1 to GV3 under the side holes GL1 to GL3.
  • the vertical holes GV1 to GV3 are used to determine the direction of the fixture placement from the outside during the procedure.
  • Fixtures often have a polygonal shape, including hexagons, in which the tip portion of the fixture is connected to the abutment. Considering the fixture structure as described above, the implantation direction is determined when planning the implant, and a crown is manufactured accordingly. Therefore, it is important to position the fixture in the correct direction in response to the orientation according to the implant plan.
  • the fixture can be accurately placed according to the fixture placement direction during implant planning.
  • recessed grooves GH1 to GH3 are formed at both inner walls of the side holes GL1 to GL3.
  • Indentation groove (GH1 ⁇ GH3) is to check the depth of drilling.
  • Concave grooves (GH1 ⁇ GH3) is formed in a symmetrical position on both inner walls.
  • each step is not limited according to the order according to the above description, each step may be performed at the same time, or may be performed by changing the order of each other.
  • the step of forming a guide hole in the stent guide may be preceded, and thereafter, the height of the stent guide may be implemented to be adjusted.
  • the method may further include displaying the designed stent on the display and providing a processing tool that can be manually edited by a user. The user can change the thickness of the stent support or the width of the extension in the designed stent.
  • the dental stent designing apparatus 100 and the method described above by adjusting the height of the stent guide according to the length of the fixture to be implanted, holes of various depths can be created with a limited drill, thereby increasing the number of drills in the surgical kit. It can greatly reduce.
  • the dental stent design method according to an embodiment of the present invention is written as a program that can be executed in a computer may be implemented as a variety of recording media, such as magnetic storage media, optical reading media, digital storage media.
  • Implementations of the various techniques described herein may be implemented in digital electronic circuitry, or in computer hardware, firmware, software, or in combinations of them. Implementations may be implemented for processing by, or to control the operation of, a data processing device, eg, a programmable processor, a computer, or multiple computers, a computer program product, ie an information carrier, for example a machine readable storage. It can be implemented as a device (computer readable medium) or as a computer program tangibly embodied in a radio signal.
  • Computer programs, such as the computer program (s) described above may be written in any form of programming language, including compiled or interpreted languages, and may be written as standalone programs or in modules, components, subroutines, or computing environments. It can be deployed in any form, including as other units suitable for use.
  • the computer program can be deployed to be processed on one computer or multiple computers at one site or distributed across multiple sites and interconnected by a communication network.
  • processors suitable for the processing of a computer program include, by way of example, both general purpose and special purpose microprocessors, and any one or more processors of any kind of digital computer.
  • a processor will receive instructions and data from a read only memory or a random access memory or both.
  • Elements of a computer may include at least one processor that executes instructions and one or more memory devices that store instructions and data.
  • a computer may include one or more mass storage devices that store data, such as magnetic, magneto-optical disks, or optical disks, or receive data from, transmit data to, or both. It may be combined to be.
  • Information carriers suitable for embodying computer program instructions and data include, for example, semiconductor memory devices, for example, magnetic media such as hard disks, floppy disks, and magnetic tape, compact disk read only memory. ), Optical media such as DVD (Digital Video Disk), magneto-optical media such as floppy disk, ROM (Read Only Memory), RAM , Random Access Memory, Flash Memory, Erasable Programmable ROM (EPROM), Electrically Erasable Programmable ROM (EEPROM), and the like.
  • the processor and memory may be supplemented by or included by special purpose logic circuitry.

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  • Health & Medical Sciences (AREA)
  • Oral & Maxillofacial Surgery (AREA)
  • Dentistry (AREA)
  • Epidemiology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Dental Prosthetics (AREA)
  • Engineering & Computer Science (AREA)
  • Medical Informatics (AREA)

Abstract

La présente invention concerne un procédé de conception de prothèse dentaire, et un appareil ainsi qu'un support d'enregistrement pour le procédé, le procédé de conception d'une prothèse dentaire faisant varier la hauteur d'un guide de prothèse en fonction de la longueur d'une fixation, simplifiant ainsi les types de longueurs d'un foret et facilitant ainsi la procédure ainsi que la gestion d'un kit chirurgical. De plus, selon la présente invention, l'insertion d'un foret à l'intérieur d'un trou de guidage est facilitée, et la profondeur du trou créé au moyen du foret et la direction d'insertion de la fixation peuvent être vérifiées, ce qui favorise la précision de la procédure d'implantation.
PCT/KR2016/014322 2015-12-15 2016-12-07 Procédé de conception de prothèse dentaire, appareil correspondant et support d'enregistrement sur lequel un procédé est enregistré WO2017105031A1 (fr)

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KR1020150179402A KR101738924B1 (ko) 2015-12-15 2015-12-15 치과용 스텐트 설계 방법, 이를 위한 장치, 및 이를 기록한 기록매체
KR10-2015-0179402 2015-12-15

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Cited By (1)

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KR20190008686A (ko) * 2017-07-17 2019-01-25 오스템임플란트 주식회사 치과용 서지컬 가이드 설계 방법, 이를 위한 장치, 및 이를 기록한 기록매체

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KR101985919B1 (ko) * 2018-05-31 2019-06-05 오스템임플란트 주식회사 치과용 서지컬 가이드 설계 방법, 이를 위한 장치, 및 이를 기록한 기록매체
KR101959774B1 (ko) * 2018-11-29 2019-03-19 김용서 외부 주수 장치를 구비하는 치아 임플란트 시술용 서지컬 가이드 시스템
KR102425570B1 (ko) * 2020-08-19 2022-07-26 오스템임플란트 주식회사 프린터별 가이드 오프셋을 반영한 가이드 디자인 방법 및 그 장치

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20190008686A (ko) * 2017-07-17 2019-01-25 오스템임플란트 주식회사 치과용 서지컬 가이드 설계 방법, 이를 위한 장치, 및 이를 기록한 기록매체
KR102013667B1 (ko) 2017-07-17 2019-08-26 오스템임플란트 주식회사 치과용 서지컬 가이드 설계 방법, 이를 위한 장치, 및 이를 기록한 기록매체

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