WO2010010029A1 - Dispositif de commande de la position et/ou de l'orientation d'instruments ou d'implants dentaires utilisant des guides de fraises dentaires - Google Patents

Dispositif de commande de la position et/ou de l'orientation d'instruments ou d'implants dentaires utilisant des guides de fraises dentaires Download PDF

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Publication number
WO2010010029A1
WO2010010029A1 PCT/EP2009/059096 EP2009059096W WO2010010029A1 WO 2010010029 A1 WO2010010029 A1 WO 2010010029A1 EP 2009059096 W EP2009059096 W EP 2009059096W WO 2010010029 A1 WO2010010029 A1 WO 2010010029A1
Authority
WO
WIPO (PCT)
Prior art keywords
dental
implant
signal
orientation
drill guide
Prior art date
Application number
PCT/EP2009/059096
Other languages
English (en)
Inventor
Carl Van Lierde
Veerle Pattijn
Alessio Esposti
Original Assignee
Materialise Dental N.V.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Materialise Dental N.V. filed Critical Materialise Dental N.V.
Publication of WO2010010029A1 publication Critical patent/WO2010010029A1/fr

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Classifications

    • 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
    • A61C1/082—Positioning or guiding, e.g. of drills
    • 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
    • A61C1/0007—Control devices or systems
    • A61C1/0015—Electrical systems
    • 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
    • A61C1/082—Positioning or guiding, e.g. of drills
    • A61C1/084—Positioning or guiding, e.g. of drills of implanting tools
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C8/00—Means to be fixed to the jaw-bone for consolidating natural teeth or for fixing dental prostheses thereon; Dental implants; Implanting tools
    • A61C8/0089—Implanting tools or instruments
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H3/00—Mechanisms for operating contacts
    • H01H3/02—Operating parts, i.e. for operating driving mechanism by a mechanical force external to the switch
    • H01H3/16—Operating parts, i.e. for operating driving mechanism by a mechanical force external to the switch adapted for actuation at a limit or other predetermined position in the path of a body, the relative movement of switch and body being primarily for a purpose other than the actuation of the switch, e.g. for a door switch, a limit switch, a floor-levelling switch of a lift

Definitions

  • the current invention is related to computer guided dental implantology and dental drill guides, and is intended to provide position and/or orientation control during implant drilling or implant placement.
  • the current invention is a device that will generate a signal (audible, perceptible, tangible or visible) to inform the user when the dental tool (implant holder/driver, drill%) reaches a predetermined position and/or orientation planned for dental implant planning software, e.g. in CT-based dental implant planning software.
  • FIG. 1 shows a typical swan-necked dental handpiece, which comprises a handle A, a neck B and a head C in which a rotary tool (e.g. drill, bur, implant driver) is fixed.
  • the handpiece is typically driven by a drive shaft or belt, which extends between the head of the handpiece and a remotely located drive motor.
  • the drive shaft transmits the rotational movement of the motor to the handpiece.
  • Handpieces can alternatively be driven by electric or pneumatic drive motors. Handpieces are used to drive tools during various dentistry operations, such as filling cavities, cleaning and the fitting of dental implants.
  • implant planning software in combination with surgical drill guides is known technology in dental implantology.
  • a CT scan is made of the patient's jaw to visualize the bone in which implants will be placed.
  • a scan prosthesis is worn during scanning to visualize the desired tooth setup.
  • dental planning software e.g. SimPlant, Materialise Dental N.V.
  • dental implants can be planned taken into account aesthetics (i.e. desired tooth setup) and anatomical information (i.e. bone quantity and quality).
  • a drill guide e.g. SurgiGuide, Materialise Dental N.V.
  • This drill guide fits in the patient's mouth and contains cylindrical tubes which guide the drilling actions in accordance to the treatment plan.
  • More advanced drill guides provide additional functionality, guiding the implant placement itself and guaranteeing the axial position (i.e. depth) of the implants relative to the gums.
  • Such depth control is commonly provided by means of a physical stop or by a mark on the dental tool which acts as a visual cue.
  • the surgeon still needs to pay attention in order to detect the contact between the guide and the tool e.g. drill, implant driver as soon as it occurs. Otherwise there is a risk that the surgeon forces the tool deeper than planned for example due to compression of the soft tissue underneath the drill guide.
  • the visibility of the marks can be poor due to for instance water cooling applied during drilling, limited opening of the mouth by the patient, etc.
  • detecting the alignment of the mark on the device with the top surface of the guiding tube in the dental drill guide is a subjective action, which can be influenced by the viewing direction of the surgeon.
  • An object of the present invention is to provide an alternative device and a method, particularly alternative systems and methods for computer guided dental implantology and dental drill guides.
  • An advantage of the present invention for some embodiments can be that a better depth control is possible and especially that a better position and/or orientation control during implant drilling or implant placement is possible.
  • the present invention is particularly directed to a device to be used in combination with a dental drill guide, and is intended to generate a signal (audible, perceptible, tangible or visible) to inform the user when the dental tool (e.g. drill) or implant reaches the desired position and/or orientation, i.e. corresponding with the implant position and/or orientation as planned in a dental implant planning software.
  • a signal audible, perceptible, tangible or visible
  • the device is particularly characterized in that it has a circuit having two electrical states connected to a signal generator.
  • a first state e.g. an open electrical circuit state
  • no signal is audible, perceptible, tangible or visible that is generated by the signal generator.
  • the circuit enters a second state, e.g. an electrical switch closes, when the desired position and/or orientation of the dental tool or implant (i.e. the one of the planning) is achieved, causing a signal to be produced.
  • a device for use with a dental drill guide and a dental tool or implant, comprising: a signal generator that generates a signal when the dental tool or implant reaches a desired position and/or orientation with respect to the drill guide.
  • the desired position and/or orientation with respect to the drill guide can correspond with an implant position and/or orientation as planned in a dental implant planning software.
  • the dental tool can be a drill for example.
  • the signal generator can be adapted to generate an audible, perceptible, tangible, or visible signal.
  • a circuit having a first and a second electrical state, wherein the circuit is connected to the signal generator, whereby in the first state, no audible, perceptible, tangible or visible signal is generated by the signal generator, wherein when the desired position and/or orientation of the dental tool or implant is achieved, the circuit is adapted for entering the second state causing an audible, perceptible, tangible or visible signal to be produced by the signal generator.
  • the first state can be in one option an open electrical circuit state.
  • a sensor can be provided to sense when the dental tool or implant reaches the desired position and/or orientation with respect to the drill guide.
  • This sensor can comprise two conductive parts normally in an electrical open circuit condition, wherein the conductive parts are adapted to close when the dental tool or implant reaches the desired position and/or orientation with respect to the drill guide.
  • Figure 1 shows a dental handpiece
  • Figure 2 shows a preferred embodiment of the invention mounted on the head of a dental handpiece
  • Figure 3 shows a preferred embodiment of the invention with a decomposition of the different parts
  • Figure 4 shows a sectional view of a preferred embodiment of the invention
  • Figure 5 shows the moveable part with the ring shaped metal plate
  • Figure 6 shows the fixed part with the two half ring shaped metal plates
  • Figure 7 shows the clip including the metal plate
  • Figure 8 shows a schematic overview of the electrical circuit used by a device according to the present invention.
  • patient in the following reference to "patient”, “teeth, or “jawbone” should be construed broadly to include not only humans but also animals, especially mammals in need of surgery.
  • a device that can be used during implant placement in combination with a dental drill guide and a dental handpiece 1. It is intended to provide depth control during said implant placement by providing e.g. an audible signal to inform the user when the planned implant depth is reached.
  • the device is an assembly of several components: (i) a signal generator 2 (e.g. LED, buzzer, or vibration motor); (ii) an electrical power transferring means such as a wire mount 3; (iii) a sensor component, such as a circuit gap (CG) component 4 and (iv) a switch 5.
  • the device is connected to a power source 6.
  • This can be a separate power source (e.g. a battery) or can be the same source as the dental handpiece 1.
  • the components and the power source form an electrical circuit which can be opened or closed via the switch 5.
  • the design of the components is such that the device can easily be mounted on the dental handpiece 1.
  • the sensor component is designed to sense when a certain depth has been reached.
  • the sensor component is exemplified by the CG component 4.
  • CG component 4 has a cylindrical part 7 which fits to the bottom plate 8 of the head C of the dental handpiece 1. This cylindrical part 7 has a central cylindrical hole 9 which lines up with the axis 10 of said head C in order not to hinder the rotary tool 11 (drill, implant driver%) when inserted in the handpiece 1.
  • Extending from the cylindrical part 7 towards the handle A of the handpiece 1 is a retention brace 12 which snaps onto the neck B of the handpiece 1 from the bottom side, directly behind the head C.
  • This retention brace 12 has two arms 13 engaging the neck B of the handpiece 1 on respectively the right and left hand side.
  • the bulk of the CG component 4 is made of an electrically non-conductive material.
  • the component is further characterized in that the bottom 1' of the cylindrical part 7 is equipped with two C-shaped conductive plates 14 (e.g. metallic material), one on either side of the central cylindrical hole 9.
  • Each C- plate 14 is connected to an electrical wire embedded in the CG-component 4.
  • the two wires run up respectively along either arm 13 of the retention brace 12 ending in small metal plates 15 at the outer end of the arms 13.
  • Two similar metal plates 16 are located at the outer ends of the wire mount 3, which also is shaped like a brace with two arms 17 snapping over the neck of the handpiece 1.
  • the wire mount 3 is positioned diametrically opposite to the retention brace 12 of the CG-component 4 so that the respective ends of the arms 13, 17 overlap, forcing the metal plates 15, 16 of both components in contact with one another.
  • the metal plates 16 of the wire mount 3 are connected - via electric wiring 18 - to the poles of the power source 6.
  • the electrical circuit is completed by the signal generator 2 and the switch 5.
  • the former can be integrated for instance in the design of the wire mount 3 as a small LED or can be a separate unit placed in the circuit producing e.g. an auditory signal.
  • the signal generator 2 may act as a relay, de-activating the dental handpiece 1 when the circuit is closed i.e. when the desired depth has been reached.
  • the switch 5 snaps onto the head C of the dental handpiece 1, covering the cylindrical part 7 of the CG-component 4. Orientated in the same manner as said cylindrical part 4 and facing the two metal C- shaped plates 14 is the moveable portion 19 of the switch 5. It is thereby also aligned with the axis 10 of the head C of the handpiece 1, necessitating a central opening 20 through which the rotary tool 11 can operate freely. Relative to the portion 21 of the switch 5 attached to the head C of the handpiece 1, the moveable portion 19 can be temporary displaced along the axis of the rotary tool in the direction of the handpiece 1 when loaded (in that direction).
  • a spring or spring-like element/feature 22 e.g.
  • the moveable portion 19 forces the moveable portion 19 back into its original position once the load has been removed.
  • the moveable portion 19 is fitted with a circular metal plate 23 facing the C-shaped plates 14 of the CG-component 4.
  • the moveable portion 19 is loaded when it abuts against the drilling template.
  • the metal plate 23 of the moveable portion 19 contacts the C-shaped plates 14, which closes the electrical circuit and activates the signal generator 2.
  • the moveable portion 19 of the switch 5 has at the bottom part a means to connect an additional ring shaped part with a certain height in order to adapt the depth position of the tool or implant relative to the dental drill guide.
  • the switch 5 to be mounted on the head C of the dental handpiece 1 can use a screw fitting.
  • a bayonet fitting or any other suitable form can be used to mount the switch 5 on the head C of the dental handpiece 1.
  • any connection can be used for the moveable portion 19 of the switch 5 that ensures non-contact with the C-shaped plates ol4 f the CG-component 4 except when the moveable portion 19 of the switch 5 is in contact with the dental drill guide, i.e. at the moment the position and/or orientation of the dental tool as planned in dental implant planning software is reached.
  • the device can be incorporated within or mounted on a manual screw driver that is used in combination with a dental drill guide and is intended to provide depth control during implant placement by providing a signal to inform the user when the implant has reached the planned depth.
  • the device can be designed to provide a signal when the planned rotational position is reached for the implant.
  • the device can be designed to provide two particularly different perceptible signals: a first perceptible signal is generated at the moment the planned depth position of the implant is reached and after that a second perceptible signal is generated at the moment the planned rotational position of the implant is reached.
  • the device is used during implant drilling through a dental drill guide by means of a dental handpiece 1 and is intended to provide depth control during said implant drilling action by providing a signal (audible, perceptible, tangible or visible) to inform the user when the drill depth that corresponds with the planned implant depth is reached.
  • the invention is further directed to a method for indicating the position and/or orientation of a device during the use of said device with a dental drill guide and a dental tool or implant, wherein a signal is generated when the dental tool or implant reaches a desired position and/or orientation with respect to the drill guide.
  • the used device can be designed as previously described.
  • the method can be further designed as previously described with respect to the device according to the invention.
  • the signal generator may be implemented with a general purpose processor, an embedded processor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), a field programmable gate array (FPGA) or other programmable logic device, discrete gate or transistor logic, discrete hardware components, or any combination designed to perform the functions described herein.
  • a general purpose processor may be a microprocessor, controller, microcontroller or state machine.
  • a processor may also be implemented as a combination of computing devices, e.g., a combination of a DSP and a microprocessor, a plurality of microprocessors, one or more microprocessors in conjunction with a DSP core, or any other such configuration.

Landscapes

  • 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)
  • Engineering & Computer Science (AREA)
  • Water Supply & Treatment (AREA)
  • Dental Tools And Instruments Or Auxiliary Dental Instruments (AREA)

Abstract

Dispositif destiné à être utilisé conjointement avec un guide de fraise dentaire et un instrument ou un implant dentaire, le dispositif comprenant un moyen (2) conçu pour générer un signal lorsque l'instrument ou l'implant dentaire atteint une position et/ou une orientation souhaitée(s) par rapport au guide de fraise. Le signal ainsi généré fournit une indication d'une position et/ou d'une orientation souhaitée(s) par rapport au guide de fraise en garantissant ainsi une meilleure maîtrise de la profondeur du dispositif, notamment d'une fraise, dans la mâchoire d'un patient.
PCT/EP2009/059096 2008-07-22 2009-07-15 Dispositif de commande de la position et/ou de l'orientation d'instruments ou d'implants dentaires utilisant des guides de fraises dentaires WO2010010029A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB0813419.9 2008-07-22
GB0813419A GB0813419D0 (en) 2008-07-22 2008-07-22 Device for position/orientation control of dental tools or implants using dental drill guides

Publications (1)

Publication Number Publication Date
WO2010010029A1 true WO2010010029A1 (fr) 2010-01-28

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Application Number Title Priority Date Filing Date
PCT/EP2009/059096 WO2010010029A1 (fr) 2008-07-22 2009-07-15 Dispositif de commande de la position et/ou de l'orientation d'instruments ou d'implants dentaires utilisant des guides de fraises dentaires

Country Status (2)

Country Link
GB (1) GB0813419D0 (fr)
WO (1) WO2010010029A1 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20120241881A1 (en) * 2011-03-25 2012-09-27 Tohoku University Magnetoresistive element and magnetic memory
GB2513245A (en) * 2013-03-12 2014-10-22 Neil Meredith Improvements in surgical instruments
US20180140378A1 (en) * 2016-11-19 2018-05-24 Sohail M. Ebrahimi Snapon Adjustable Implant Surgical Drill Stop and Surgical Guide
KR101862485B1 (ko) 2016-11-30 2018-05-29 광주대학교산학협력단 치과 임플란트용 헥사 드라이버
US10987196B2 (en) 2018-06-27 2021-04-27 Paltop Advanced Dental Solutions Ltd. Drill guide

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0503890A2 (fr) * 1991-03-12 1992-09-16 Yuusuke Nonomura Dispositif et méthode pour la fabrication de produits d'obturation dentaire destiné à la réparation de couronnes dentaires
US5343391A (en) * 1990-04-10 1994-08-30 Mushabac David R Device for obtaining three dimensional contour data and for operating on a patient and related method
WO1997000650A1 (fr) * 1995-06-23 1997-01-09 Optiva Corporation Brosse a dents comportant un capteur de charge adaptatif

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5343391A (en) * 1990-04-10 1994-08-30 Mushabac David R Device for obtaining three dimensional contour data and for operating on a patient and related method
EP0503890A2 (fr) * 1991-03-12 1992-09-16 Yuusuke Nonomura Dispositif et méthode pour la fabrication de produits d'obturation dentaire destiné à la réparation de couronnes dentaires
WO1997000650A1 (fr) * 1995-06-23 1997-01-09 Optiva Corporation Brosse a dents comportant un capteur de charge adaptatif

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20120241881A1 (en) * 2011-03-25 2012-09-27 Tohoku University Magnetoresistive element and magnetic memory
US8680632B2 (en) * 2011-03-25 2014-03-25 Kabushiki Kaisha Toshiba Magnetoresistive element and magnetic memory
GB2513245A (en) * 2013-03-12 2014-10-22 Neil Meredith Improvements in surgical instruments
US20180140378A1 (en) * 2016-11-19 2018-05-24 Sohail M. Ebrahimi Snapon Adjustable Implant Surgical Drill Stop and Surgical Guide
WO2018094302A1 (fr) * 2016-11-19 2018-05-24 Ebrahimi Sohail M Butée d'arrêt de foret chirurgical pour implant ajustable encliquetable et guide chirurgical
US11896449B2 (en) * 2016-11-19 2024-02-13 Sohail M. Ebrahimi Snapon adjustable implant surgical drill stop and surgical guide
KR101862485B1 (ko) 2016-11-30 2018-05-29 광주대학교산학협력단 치과 임플란트용 헥사 드라이버
US10987196B2 (en) 2018-06-27 2021-04-27 Paltop Advanced Dental Solutions Ltd. Drill guide

Also Published As

Publication number Publication date
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