WO2008101655A1 - Instrument de traitement dentare par laser comprenant un élément de sortie de lumière et un système d'humidification intégré utilisant de l'eau - Google Patents

Instrument de traitement dentare par laser comprenant un élément de sortie de lumière et un système d'humidification intégré utilisant de l'eau Download PDF

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Publication number
WO2008101655A1
WO2008101655A1 PCT/EP2008/001241 EP2008001241W WO2008101655A1 WO 2008101655 A1 WO2008101655 A1 WO 2008101655A1 EP 2008001241 W EP2008001241 W EP 2008001241W WO 2008101655 A1 WO2008101655 A1 WO 2008101655A1
Authority
WO
WIPO (PCT)
Prior art keywords
treatment instrument
handpiece
laser treatment
decoupling element
dental laser
Prior art date
Application number
PCT/EP2008/001241
Other languages
German (de)
English (en)
Inventor
Alexander Hack
Bernd Liebermann
Ursula Schmitt
Thomas JÄGGLE
Original Assignee
Kaltenbach & Voigt 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 Kaltenbach & Voigt Gmbh filed Critical Kaltenbach & Voigt Gmbh
Priority to EP08715838A priority Critical patent/EP2114284A1/fr
Publication of WO2008101655A1 publication Critical patent/WO2008101655A1/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
    • A61C1/0046—Dental lasers

Definitions

  • the present invention relates to a dental laser treatment instrument according to the preamble of claim 1, which comprises a handpiece and an elongated decoupling element located at the front end of the handpiece for emitting the laser radiation.
  • a dental laser treatment instrument according to the preamble of claim 1, which comprises a handpiece and an elongated decoupling element located at the front end of the handpiece for emitting the laser radiation.
  • Such a treatment instrument can be used in particular in periodontology.
  • Tooth tissue is irradiated with a high-energy electromagnetic radiation, which ultimately has a thermal heating and finally evaporation of the irradiated tissue result.
  • a traditional dental drill can be removed in this way materials, for example, to remove carious sites or incorporate cavities in a tooth.
  • solid-state lasers of the Er: YAG type have become established. These lasers have a wavelength which has the special property of being in accordance with the maximum of the absorption spectrum of water, which ultimately leads to a high removal efficiency with minimal thermal influences due to the fact that the tissue to be treated usually also contains water.
  • the performance of the Er: YAG laser is such that they are usually operated in a pulse mode.
  • a solution for realizing such an integrated water supply is known, for example, from US Pat. No. 6,567,582.
  • a specially designed sleeve-shaped holder is provided for supporting the Lichtauskoppelelements, which surrounds a radiation provided for the purpose of optical fiber at least in a front end of the fiber facing area at a distance.
  • an annular channel extending in the longitudinal direction of the optical fiber is formed, via which ultimately an air-water mixture in the form of a spray is to be dispensed.
  • This elongated annular channel is over several
  • the present invention seeks to provide a further improved embodiment, which is particularly suitable for use in periodontal laser handpieces.
  • a further improved embodiment which is particularly suitable for use in periodontal laser handpieces.
  • the most effective flushing of water in the periodontal pockets should be achieved.
  • the object is achieved by a laser treatment instrument having the features of claim 1.
  • the solution according to the invention is based on the finding that an effective rinsing of the periodontal pockets can only be achieved if the light fiber of the decoupling element flows around water evenly and without interference as far as possible. It has now been found that this is known from US 6,567,582 known solution of water supply is insufficient, since due to the multiple through holes, which are provided in the wall of the sleeve-shaped retaining element, turbulence occur, which prevent the formation of a uniform flow of water. To avoid this problem, it is provided in the solution according to the present invention that in the wall of the holder only a single fürgangsöffhung is formed.
  • a dental laser treatment instrument is accordingly proposed that is to be connected to a supply tube for supplying a laser radiation and a treatment fluid and at the front end of an elongated coupling element for emitting the laser radiation is arranged.
  • the decoupling element has an elongate optical fiber and a cylindrical or sleeve-shaped holder which surrounds the optical fiber at a distance in a region facing the front end of the fiber to form a fluid channel, the fluid channel having a supply line extending through the handpiece is in contact, and wherein according to the invention it is provided that the connection between the fluid channel and the supply line via a single formed in the wall of the cylindrical or sleeve-shaped holder fürgangsöffhung.
  • the decoupling element is rotatably arranged on the handpiece.
  • a guide member for receiving the decoupling element is provided in the head region of the handpiece, wherein on an inner wall of the guide member an adjacent to the passage opening annular channel is formed.
  • This annular channel which allows a continuous fluid connection in each rotational position of the decoupling element, so in contrast to the teaching of US 6,567,582 not on the outer wall of the sleeve-shaped holder, but instead on the opposite
  • the decoupling element is preferably arranged at an angle of about 100 ° to the longitudinal axis of the handpiece.
  • the optical fiber may preferably be wedge-shaped in order to emit the laser radiation in the manner suitable for carrying out the treatment in the periodontal pockets.
  • FIG. 1 a perspective view of a dental laser treatment instrument according to the invention
  • FIG. 2 shows the front head region of the laser treatment instrument in FIG.
  • Figure 3 shows the embodiment of the light output element
  • Figure 4 shows the sectional view of a guide member for holding the
  • FIG. 5 shows a further enlarged representation of the area of the fluid
  • Figure 6 is a representation to illustrate a with the invention
  • Laser treatment instrument performed treatment.
  • the laser treatment instrument according to the invention shown in Figure 1 and generally provided with the reference numeral 1 has an elongated handpiece 2, which is equipped at its rear side 3 with coupling elements, not shown, which connects the handpiece 2 with a to a Supply unit leading supply hose allow.
  • the laser radiation is supplied, on the other hand, there is also the supply of a fluid, such as water.
  • the laser radiation used is preferably the radiation of an ErYAG laser which emits radiation in the region of 2.94 ⁇ m.
  • the laser radiation is emitted by means of a decoupling element 30, which is mounted in the head region 4 of the handpiece 2 and extends in particular at an angle of approximately 100 ° to the longitudinal axis of the handpiece.
  • the decoupling element 30 has - as will be explained in more detail below - a wedge-shaped or chisel-shaped optical fiber, which was designed especially for the treatment of subgingival sites. This light fiber with a rectangular exit surface for lateral light emission produces a homogeneous beam profile, which is particularly suitable for treating a preparation site under contact.
  • a main field of application of the laser treatment instrument 1 according to the invention, as shown in FIG. 6, is the treatment of the epithelial lining of periodontal pockets.
  • the decoupling element 30 is introduced into the pocket 51 of a tooth 50, with the aid of the radiation then being able to efficiently remove infected soft tissue.
  • the germicidal effect of the laser in this case ensures an improved healing, whereby in the pocket 51 accumulating concretions are gently and largely painlessly removed.
  • the root surface 52 of the tooth 50 is protected as well as possible.
  • the treatment shown in FIG. 6 is particularly effective, in particular, when cooling is achieved by means of water moistening, wherein water is continuously conveyed to the treatment site as sterile coolant during the treatment.
  • This is achieved in the laser treatment instrument of the present invention in that the light fiber of the decoupling element 30 is washed with water.
  • FIG. 2 initially shows the front handpiece region in cross section, wherein it can be seen that the laser radiation is supplied via a channel 5 extending through the handpiece longitudinal axis and directed onto a mirror 7 with the aid of a lens arrangement 6.
  • the mirror 7 in turn ensures a deflection and corresponding coupling of the laser radiation in the optical fiber 31 of the coupling element.
  • the laser radiation is in this case coupled via the end face 31a of the fiber 31 in this.
  • the decoupling element 30 is rotatably arranged in the head region 4 of the handpiece 2, which is achieved by means of a special guide member 10, the further embodiment of Figure 4 can be removed.
  • This guide member 10 has a central passage opening 11 for releasably receiving the decoupling element 30 and is screwed into the head portion 4 of the handpiece by means of a thread 12.
  • a seal between guide part 10 and handpiece 2 is achieved.
  • a further groove 14 for receiving a third O-ring 15 is further formed, which ensures a corresponding seal with the coupling-out element 30.
  • the coupling element itself in turn consists of the wedge-shaped or chiselike optical fiber 31 and two cylindrical or sleeve-shaped holders 32 and 33.
  • the inner sleeve 33 firmly surrounds the frontal end of the optical fiber 31, while the outer sleeve 32, the fiber 31st surrounds with a certain distance.
  • an elongated annular space 22 surrounding the fiber 31 is formed, which serves as a channel for discharging the water.
  • the fiber 31 is thus flushed over this channel 22, so that the supply of water into the tooth pocket can take place.
  • Object of the present invention is to make the supply of water in this surrounding the fiber 31 annular space 22 as possible so that the water can be fed effectively and smoothly to a continuous and effective To allow rinsing.
  • the measures provided for this purpose will be explained below.
  • a first special feature is that, in contrast to the solution of US Pat. No. 6,567,582, the supply of the water into the annular space surrounding the fiber 31, which is designated 22 in FIG. 5, takes place via a single passage opening 34 in the wall of the sleeve 32. It has been found that in this case, a particularly uniform flow of water can be achieved, whereas in the prior art, the plurality of openings provides turbulence. These are quite desirable in the solution of the prior art, since a mixing of at least two media should be done here, for example, to form a spray. In the handpiece according to the present invention, however, no such mixing is desired because anyway only a single medium is supplied. Instead, the goal is to achieve as even a flow as possible. This is supported by the use of the single through-hole 34.
  • the arrangement of the decoupling element 30 in the guide part 10 can be taken from the representations of Figures 2 and 5. It can also be seen that on the inner wall of the guide member 10, a groove 17 is formed, which forms an annular channel 21 which corresponds to the passage opening 34. This annular channel 21 is in turn connected via a plurality of obliquely through the guide member 10 extending through holes 16 with a further annular channel 21 which is formed on the outside of the guide member 10 and is approximately triangular in cross section. This annular channel 20 is then in contact with the extending through the handpiece 2 through holes 8 and 9, which are used for the supply of water.
  • the water supplied via the bore 9 in the head region 4 of the handpiece 2 enters the annular channel 20 formed on the outer side of the guide part 10 and then flows through the plurality of through-holes 16 into the annular channel 21 on the inside of the guide part 10. From this annular channel 21st in turn, the water can then flow via the single through-hole 34 into the interior of the sleeve-shaped holder 32 into the free space 22 and then run along the outside of the fiber 31 along the treatment site.
  • a particular advantage of the solution according to the invention is that by using the single through-hole 34 a particularly uniform flow within the space 22 is achieved. As a result, the flushing and cooling of the tooth pocket is supported in a special way.
  • a further constructive difference to US Pat. No. 6,567,582 also consists in that the annular channel 21 corresponding to the passage opening 34 is not formed on the outer wall of the sleeve 32 but instead on the inner wall of the guide part 10. As a result, weakenings in the wall of the sleeve 32 are avoided, so that ultimately a secure and reliable central support of the fiber 31 is made possible.

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  • Health & Medical Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Optics & Photonics (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 Tools And Instruments Or Auxiliary Dental Instruments (AREA)

Abstract

L'invention concerne un instrument de traitement dentaire par laser comprenant une pièce à main (1) conçue pour être reliée avec un tuyau d'alimentation destiné à amener un rayonnement laser ainsi qu'un fluide de traitement, et à l'extrémité antérieure (4) de laquelle est disposé un élément de sortie (30) oblong destiné à distribuer le rayonnement laser. L'élément de sortie (30) comprend une fibre optique (31) allongée et un support (32, 33) en forme de cylindre ou d'enveloppe qui entoure la fibre optique (31) au moins dans une zone orientée vers l'extrémité avant (31b) de la fibre (31), de manière à former un canal fluidique (22), une distance étant maintenue entre le support et la fibre optique. Le canal fluidique (22) est en contact avec un conduit d'amenée (8, 9) s'étendant à travers la pièce à main (1), la liaison entre le canal fluidique (22) et le conduit d'amenée (8, 9) étant établie par l'intermédiaire d'un orifice traversant (34) unique formé dans la paroi du support (32, 33) en forme de cylindre ou d'enveloppe.
PCT/EP2008/001241 2007-02-19 2008-02-18 Instrument de traitement dentare par laser comprenant un élément de sortie de lumière et un système d'humidification intégré utilisant de l'eau WO2008101655A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP08715838A EP2114284A1 (fr) 2007-02-19 2008-02-18 Instrument de traitement dentare par laser comprenant un élément de sortie de lumière et un système d'humidification intégré utilisant de l'eau

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102007008115.6 2007-02-19
DE200710008115 DE102007008115A1 (de) 2007-02-19 2007-02-19 Zahnärztliches Laser-Behandlungsinstrument mit Licht-Auskoppelelement und integrierter Wasserbefeuchtung

Publications (1)

Publication Number Publication Date
WO2008101655A1 true WO2008101655A1 (fr) 2008-08-28

Family

ID=38472994

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2008/001241 WO2008101655A1 (fr) 2007-02-19 2008-02-18 Instrument de traitement dentare par laser comprenant un élément de sortie de lumière et un système d'humidification intégré utilisant de l'eau

Country Status (3)

Country Link
EP (1) EP2114284A1 (fr)
DE (1) DE102007008115A1 (fr)
WO (1) WO2008101655A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102009000685B4 (de) 2009-02-06 2018-10-25 Sirona Dental Systems Gmbh Laserhandstück
EP2548530B1 (fr) 2011-07-19 2014-03-19 W & H Dentalwerk Bürmoos GmbH Dispositif d'éclairage pour instrument médical, notamment dentaire

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0515983A1 (fr) * 1991-05-28 1992-12-02 Lasag Ag Dispositif d'ablation de matière, notamment pour la dentisterie
DE4339488A1 (de) * 1993-11-19 1995-05-24 Rechmann Peter Dr Med Dent Handstück, sowie Verfahren zur Spülung des Arbeitspunktes eines aus einem Lichtleiter austretenden Laserlichtstrahls
WO1997007928A2 (fr) * 1995-08-31 1997-03-06 Biolase Technology, Inc. Combinaison programmable par l'utilisateur de particules atomisees pour decoupage par procede electromagnetique
US6325794B1 (en) * 1998-05-13 2001-12-04 Samsung Electronics Co., Ltd. Laser handpiece
US6567582B1 (en) 1995-08-31 2003-05-20 Biolase Tech Inc Fiber tip fluid output device

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0515983A1 (fr) * 1991-05-28 1992-12-02 Lasag Ag Dispositif d'ablation de matière, notamment pour la dentisterie
DE4339488A1 (de) * 1993-11-19 1995-05-24 Rechmann Peter Dr Med Dent Handstück, sowie Verfahren zur Spülung des Arbeitspunktes eines aus einem Lichtleiter austretenden Laserlichtstrahls
WO1997007928A2 (fr) * 1995-08-31 1997-03-06 Biolase Technology, Inc. Combinaison programmable par l'utilisateur de particules atomisees pour decoupage par procede electromagnetique
US6567582B1 (en) 1995-08-31 2003-05-20 Biolase Tech Inc Fiber tip fluid output device
US6325794B1 (en) * 1998-05-13 2001-12-04 Samsung Electronics Co., Ltd. Laser handpiece

Also Published As

Publication number Publication date
EP2114284A1 (fr) 2009-11-11
DE102007008115A1 (de) 2008-08-21

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