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WO2011035958A1 - Dispositif de traitement ou d'examen des dents - Google Patents

Dispositif de traitement ou d'examen des dents Download PDF

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Publication number
WO2011035958A1
WO2011035958A1 PCT/EP2010/060880 EP2010060880W WO2011035958A1 WO 2011035958 A1 WO2011035958 A1 WO 2011035958A1 EP 2010060880 W EP2010060880 W EP 2010060880W WO 2011035958 A1 WO2011035958 A1 WO 2011035958A1
Authority
WO
WIPO (PCT)
Prior art keywords
fiber
fiber section
dental treatment
section
dental
Prior art date
Legal status (The legal status 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 status listed.)
Ceased
Application number
PCT/EP2010/060880
Other languages
German (de)
English (en)
Inventor
Christoph Hauger
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Carl Zeiss Surgical GmbH
Original Assignee
Carl Zeiss Surgical GmbH
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 Carl Zeiss Surgical GmbH filed Critical Carl Zeiss Surgical GmbH
Publication of WO2011035958A1 publication Critical patent/WO2011035958A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • 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
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/0059—Measuring for diagnostic purposes; Identification of persons using light, e.g. diagnosis by transillumination, diascopy, fluorescence
    • A61B5/0062—Arrangements for scanning
    • A61B5/0066—Optical coherence imaging
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/0059—Measuring for diagnostic purposes; Identification of persons using light, e.g. diagnosis by transillumination, diascopy, fluorescence
    • A61B5/0082—Measuring for diagnostic purposes; Identification of persons using light, e.g. diagnosis by transillumination, diascopy, fluorescence adapted for particular medical purposes
    • A61B5/0088—Measuring for diagnostic purposes; Identification of persons using light, e.g. diagnosis by transillumination, diascopy, fluorescence adapted for particular medical purposes for oral or dental tissue
    • 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
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/0059—Measuring for diagnostic purposes; Identification of persons using light, e.g. diagnosis by transillumination, diascopy, fluorescence
    • A61B5/0073—Measuring for diagnostic purposes; Identification of persons using light, e.g. diagnosis by transillumination, diascopy, fluorescence by tomography, i.e. reconstruction of 3D images from 2D projections

Definitions

  • the invention relates to a dental treatment or -untersuchungsvoriques with a base body and with a dental or Zahnuntersuchtungsinstrument which is rotatably mounted in the body
  • the dental treatment or examination device further includes an OCT system for examining a depth range in the tooth, which is an optical fiber with a
  • the first fiber section is associated with the main body and the second fiber section is connected to the dental treatment or examination instrument.
  • the first fiber section includes an exit end and the second fiber section has an entrance end. In this case, the first outlet end and the second inlet end are arranged such that light of the OCT measuring beam can be transferred from the outlet end into the inlet end and vice versa
  • a tooth consists essentially of three components, namely the dentin, also known as the dentin, the enamel, with which the dentin is covered for its protection, and the pulp, also referred to as dental pulp or colloquially tooth nerve, which contains the nerve fibers and blood vessels of the tooth.
  • the pulp can be subdivided into the crown pulp, which runs through the tooth crown, and the root pulp, which runs through the root.
  • the pulp tissue is extremely sensitive, for example to thermal stimuli. Temperatures above 42 ° C can damage the pulp tissue thermally, which can lead to the death of pulp tissue.
  • the imaging catheter can be an OCT catheter, ie a catheter for performing an optical coherence tomography.
  • US Pat. No. 6,419,484 B1 discloses another dental treatment device which comprises a base body in the form of a handle and a dental treatment instrument in the form of a drill.
  • the dental treatment device further includes an OCT system for examining a depth range in the tooth.
  • An optical fiber of the O CT system for guiding an OCT measurement beam is arranged in the base body and has an outlet end on a surface of the base body. The outlet end is designed such that an emerging OCT measuring beam impinges on the surface to be examined in front of the drill.
  • Dental treatment instrument in the form of a drilling tool comprises.
  • an OCT system With the help of an OCT system, a depth range in the tooth can be examined and, in particular, a distance between a dentin and pulp boundary and the surface of the tooth determined so that the pulp is not opened during a treatment.
  • the OCT system comprises an optical fiber for guiding an OCT measuring beam with a first fiber section, which is arranged in the base body, and a second fiber section, which is guided in an axis of rotation of the drilling tool and rotates in operation with the drilling tool of an unspecified coupler is light of the OCT measuring beam from an exit end of the first fiber portion into
  • An object of the present invention is therefore a dental treatment or - examination device with a rotatably mounted Zahn harmonys- or
  • the object is achieved by a dental treatment or examination device having the features of claim 1.
  • an optical element between the outlet end of the first
  • Fiber portion and the entrance end of the second fiber portion provided.
  • a beam shaping of the OCT measuring beam is possible upon entry into the second fiber section of the optical fiber and thus adaptation of the OCT measuring beam to the spatial conditions.
  • the optical element is designed as imaging optics, by means of which the outlet end of the first fiber section can be imaged onto the inlet end of the second fiber section. This offers the advantage that the light of the OCT measuring beam can be introduced as completely as possible into the second fiber section
  • the Austrinkende of the first fiber portion and the inlet end of the second Faserab section are spaced from each other.
  • the "dormant" fiber end and the rotating fiber end are spatially separated from each other, so that in operation the OCT measuring beam can be transferred from the first fiber section into the second fiber section
  • the optical element is with the first
  • Fiber portion or the second fiber portion connected.
  • the optical element rests in operation relative to the dental treatment or examination instrument, while in an arrangement in the second fiber section at least partially rotates with the dental treatment or examination instrument.
  • Fiber section remains.
  • the optical element can also by means of a corresponding shaping of an outlet cross section of the first fiber section or an inlet cross section of the second fiber section to be executed.
  • the optical element is a grin lens
  • the invention is compact.
  • a drill head is provided as a dental treatment or examination instrument.
  • Dental drills are typically operated at high speeds, and signal transmission from a stationary part of the drill into the drill head is difficult to realize, particularly due to the vibrations that occur.
  • the present invention enables a quality improvement in the
  • Fig. 1 shows a dental treatment or -Untsuchungsvoroplasty in the form of a schematic
  • Fig. 2 is a known from the prior art embodiment of a dental treatment or -unthehehungsvorraum and
  • Fig. 3 shows an embodiment of a Zahn asides- invention
  • a dental treatment or examination device known from the prior art which is embodied as a dental drill, is shown schematically in FIG.
  • the dental drill comprises a base body 1 with a handpiece 3 and a tool holder 6 and a dental treatment or examination instrument in the form of a drilling tool 37.
  • the dental drill further includes an OCT system with a white light interferometer 7, an artifactor 9 and a control unit 13.
  • the analysis device 9 and the control unit 13 are connected to the Herehchtinterferometer 7 for receiving the interferometry signal or for the delivery of control signals.
  • the white light interferometer includes a broadband light source 15 which has a short to very short coherence length. The light emitted by the light source is transmitted in the
  • the white light interferometer 7 further comprises a reflectance beam branch 17 and a measuring beam branch 19, a splitter and superimposed T 21 present in the present invention
  • Exemplary embodiment is shown as a beam splitter, and a detector 23rd
  • the white light emitted by the broadband light source 15 is split by the beam splitter 21 into a measuring beam and a reference beam, which are then coupled into the measuring beam branch 19 or the reference beam two g 17.
  • the reference beam is directed to a reflector 29 and from there is directed back to the beam splitter 21
  • Optical fiber 25 is directed to the drilling tool 37 and explained there in more detail below there on the tooth
  • a part of the measuring beam is reflected by structures in the tooth and passed through the optical fiber 25 back to the beam splitter 21.
  • the reflected measuring beam is superimposed on the reflected reference beam and both beams are fed to the detector 23.
  • a distance of the structure in the tooth from a surface of the tooth is determined by means of a Fourier domain or a time-domain analysis
  • FIG. 2 Also shown in FIG. 2 is a tooth 39 in which the pulp 41, the dentin 43 and the enamel 45 can be seen.
  • the drilling tool 37 is used,
  • Tooth enamel 45 and dentin 43 cannotbohren, for example, to remove tooth decay.
  • the drilling tool 37 should not reach the sensitive pulp 41.
  • a distance between a surface 47 of the tooth 39 and the boundary layer between the pulp 41 and the dentin 43 can be determined, so that when it falls below a
  • the optical fiber 25 includes a first fiber portion 50 and a second fiber portion 51.
  • the first fiber section 50 is guided in the embodiment shown in FIG. 3 outside the handle 3 and the tool holder 6 and attached to an outlet end 52 at a connection 53 of the tool holder 6.
  • the first fiber section 50 is guided at least partially within the handle 3 and / or the tool holder 6, as shown for example in FIG.
  • the first fiber section 50 is preferably fixedly connected to the handle 3 and / or the tool holder 6, so that relative movements between the first fiber section 50 and the
  • the first fiber section 50 has an exit end 52, at which the OCT measuring beam can be diverted from the first fiber section.
  • the second fiber section 51 is arranged along a rotation axis 54 in the boring tool 37 and connected to the boring tool 37 such that it rotates with rotation of the boring tool 37 about the rotation axis 54.
  • the OCT Measuring beam from the relative to the second
  • Fiber portion 51 resting first fiber portion 50 in the second fiber portion 51 of the optical fiber 25 can be introduced.
  • the OCT measuring beam can subsequently be guided through the second fiber section 51.
  • the OCT measuring beam can be directed to a tooth surface as already explained in greater detail above.
  • an optical element in the form of imaging optics 57 is arranged, which in this exemplary embodiment is fixedly connected to the tool receptacle 6 and which comprises two lenses 58, 59.
  • a first lens 58 collimates an OCT measuring beam emerging from the outlet end 52 of the first fiber section 50 and a second lens 59 imaged on the entrance end 56 of the second fiber section 51.
  • the illustration of the outlet end 52 on the inlet end 56 ensures that the light emerging from the outlet end 52 is almost completely introduced into the second fiber section 51. In the reverse imaging direction, this arrangement further ensures that the light reflected on the tooth surface and in the second Fiber portion 51 back fed part of the OCT measuring beam is almost completely transferred into the first fiber section 50.
  • the arrangement of the first lens 58 and the second lens 59 described in this embodiment also has the advantage that the exit end 52 of the first Fascrab section 50 and the entry end 56 of the second fiber section 51 are arranged at a spatial distance from each other, so that a mechanical Contact between the dormant first
  • Fiber section 50 and the rotating second fiber section 51 is avoided and the risk of transmission of interference, for example in the form of vibrations or thermal loads between the two fiber sections is reduced.
  • the lenses 58, 59 are preferably designed as Grin lenses.
  • the imaging optics comprise two refractive optical elements in the form of lenses 58, 59.
  • the beam can be shaped without restriction of generality
  • Fiber section but also reflective optical elements or other refractive optical elements or combinations of refractive and or reflective optical elements may be provided.
  • the first lens is connected to the horraufhahme and rests relative to the second fiber portion, and the second lens is connected to the second fiber portion.
  • the optical element (optionally with the two lenses) is associated with the second fiber section so that it rotates during operation with the drilling tool. The spatial separation between the first fiber section and the second fiber section is maintained.
  • the device according to the invention is a pure examination device with a rotating
  • Dental treatment instrument provided a polishing head.
  • a stationary fascia is spatially separated from a rotating fiber section and an OCT measurement beam is transmitted from the stationary fiber section to the rotating fiber section and vice versa via an optical element.

Landscapes

  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Veterinary Medicine (AREA)
  • Oral & Maxillofacial Surgery (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Dentistry (AREA)
  • Physics & Mathematics (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Epidemiology (AREA)
  • Biophysics (AREA)
  • Pathology (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Surgery (AREA)
  • Medical Informatics (AREA)
  • Molecular Biology (AREA)
  • Audiology, Speech & Language Pathology (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Radiology & Medical Imaging (AREA)
  • Investigating Or Analysing Materials By Optical Means (AREA)
  • Dental Tools And Instruments Or Auxiliary Dental Instruments (AREA)

Abstract

L'invention concerne un dispositif de traitement ou d'examen des dents, comportant un corps de base (3, 6) et un instrument de traitement ou d'examen des dents (37) logé rotatif dans le corps de base (6). Le dispositif comporte par ailleurs un système OCT pour l'examen d'une zone de profondeur dans la dent, comprenant une fibre optique (25) qui présente une première partie de fibre (50) et une deuxième partie de fibre (51) dans lesquelles peut être guidé un faisceau de mesure OCT. La première partie de fibre (20) est affectée au corps de base (3, 6) et la deuxième partie de fibre (51) est reliée à l'instrument de traitement ou d'examen des dents (37), la première partie de fibre (50) comportant une extrémité de sortie (52) et la deuxième partie de fibre (51) comportant une extrémité d'entrée (56). L'extrémité de sortie (52) de la première partie de fibre (50) et l'extrémité d'entrée (56) de la deuxième partie de fibre (51) sont disposées de telle manière que de la lumière du faisceau de mesure OCT peut être transférée de l'extrémité de sortie (52) vers l'extrémité d'entrée (56) et inversement. Selon l'invention, un élément optique (57) est prévu entre l'extrémité de sortie (52) de la première partie de fibre (50) et l'extrémité d'entrée (56) de la deuxième partie de fibre (51).
PCT/EP2010/060880 2009-09-28 2010-07-27 Dispositif de traitement ou d'examen des dents Ceased WO2011035958A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102009043052A DE102009043052A1 (de) 2009-09-28 2009-09-28 Zahnbehandlungs- oder -untersuchungsvorrichtung
DE102009043052.0 2009-09-28

Publications (1)

Publication Number Publication Date
WO2011035958A1 true WO2011035958A1 (fr) 2011-03-31

Family

ID=42813439

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2010/060880 Ceased WO2011035958A1 (fr) 2009-09-28 2010-07-27 Dispositif de traitement ou d'examen des dents

Country Status (2)

Country Link
DE (1) DE102009043052A1 (fr)
WO (1) WO2011035958A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012228510A (ja) * 2011-04-11 2012-11-22 Toyohashi Univ Of Technology 医療用ドリルユニットおよびドリルならびに医療用加工装置
DE102015217824A1 (de) * 2015-09-17 2017-03-23 Airbus Ds Gmbh Medizinisches Bohrersystem mit Abschaltautomatik
EP3323373A3 (fr) * 2016-11-17 2018-06-27 Airbus Defence and Space GmbH Procédé de commande d'un système de forage médical et système de forage médical
CN115444589A (zh) * 2022-10-31 2022-12-09 桂林市啄木鸟医疗器械有限公司 一种根管锉和根管治疗仪

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6179611B1 (en) * 1999-01-22 2001-01-30 The Regents Of The University Of California Dental optical coherence domain reflectometry explorer
US6419484B1 (en) 2000-09-12 2002-07-16 The Regents Of The University Of California Optical coherence tomography guided dental drill
US20020120197A1 (en) * 1999-05-07 2002-08-29 Kleffner Bernhard V. Rotating surgical tool
WO2007006698A1 (fr) * 2005-07-08 2007-01-18 Technische Universiteit Delft Systeme de foret chirurgical et foret chirurgical destine a etre utilise dans ce dernier
DE102005044889A1 (de) 2005-09-20 2007-03-29 Siemens Ag Zahnmedizinisches Untersuchungs- und/oder Behandlungswerkezug
US20090079993A1 (en) * 2005-11-22 2009-03-26 Shofu Inc. Dental Optical Coherence Tomograph
US20090155735A1 (en) * 2007-12-18 2009-06-18 Carl Zeiss Surgical Gmbh Dental treatment or examination apparatus

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6179611B1 (en) * 1999-01-22 2001-01-30 The Regents Of The University Of California Dental optical coherence domain reflectometry explorer
US20020120197A1 (en) * 1999-05-07 2002-08-29 Kleffner Bernhard V. Rotating surgical tool
US6419484B1 (en) 2000-09-12 2002-07-16 The Regents Of The University Of California Optical coherence tomography guided dental drill
WO2007006698A1 (fr) * 2005-07-08 2007-01-18 Technische Universiteit Delft Systeme de foret chirurgical et foret chirurgical destine a etre utilise dans ce dernier
DE102005044889A1 (de) 2005-09-20 2007-03-29 Siemens Ag Zahnmedizinisches Untersuchungs- und/oder Behandlungswerkezug
US20090079993A1 (en) * 2005-11-22 2009-03-26 Shofu Inc. Dental Optical Coherence Tomograph
US20090155735A1 (en) * 2007-12-18 2009-06-18 Carl Zeiss Surgical Gmbh Dental treatment or examination apparatus
DE102007063419A1 (de) 2007-12-18 2009-06-25 Carl Zeiss Surgical Gmbh Zahnbehandlungs- oder- untersuchungsvorrichtung

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012228510A (ja) * 2011-04-11 2012-11-22 Toyohashi Univ Of Technology 医療用ドリルユニットおよびドリルならびに医療用加工装置
DE102015217824A1 (de) * 2015-09-17 2017-03-23 Airbus Ds Gmbh Medizinisches Bohrersystem mit Abschaltautomatik
DE102015217824B4 (de) 2015-09-17 2019-01-17 Airbus Defence and Space GmbH Medizinisches Bohrersystem mit Abschaltautomatik
EP3323373A3 (fr) * 2016-11-17 2018-06-27 Airbus Defence and Space GmbH Procédé de commande d'un système de forage médical et système de forage médical
CN115444589A (zh) * 2022-10-31 2022-12-09 桂林市啄木鸟医疗器械有限公司 一种根管锉和根管治疗仪

Also Published As

Publication number Publication date
DE102009043052A1 (de) 2011-03-31

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