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WO2012168806A1 - Bague d'implantologie dentaire - Google Patents

Bague d'implantologie dentaire Download PDF

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Publication number
WO2012168806A1
WO2012168806A1 PCT/IB2012/052154 IB2012052154W WO2012168806A1 WO 2012168806 A1 WO2012168806 A1 WO 2012168806A1 IB 2012052154 W IB2012052154 W IB 2012052154W WO 2012168806 A1 WO2012168806 A1 WO 2012168806A1
Authority
WO
WIPO (PCT)
Prior art keywords
bushing
ring
drill
drilling
rotating members
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/IB2012/052154
Other languages
English (en)
Inventor
Stefano Silvestrelli
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.)
BIONOVA Srl
Original Assignee
BIONOVA Srl
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 BIONOVA Srl filed Critical BIONOVA Srl
Publication of WO2012168806A1 publication Critical patent/WO2012168806A1/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
    • 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

Definitions

  • the present invention refers to a dental implantology bushing and to a dental implantology surgical guide.
  • Dental implantology is that branch of dentistry involved in determining techniques for the insertion of osteointegrable implants in the patient's upper or lower jaw.
  • Osteointegrable implants are comprised of metal pins which are inserted into a patient's upper or lower jaw with surgery envisaging the drilling of the same upper or lower jaw, through use of a burr equipped with a cutting drill.
  • the deferred load one the surgical operation for pin insertion is distinct from that for prosthesis insertion, which is performed about 3-6 months after the first one.
  • the immediate load technique performed when the implant just inserted in the patient's upper or lower jaw possesses sufficient stability, the prosthesis in all similar to the native tooth is installed immediately after the first surgery.
  • immediate load implantology surgery is performed by use of a surgical guide, therefore the term "guided implantology” is also used.
  • the surgical guide is a single-use support customized on the patient's dental impression, whose aim is essentially to guide the drill by the presence of plastic or metal bushings.
  • the cutting drill fit up on the drilling burr drills the hole, in the patient's upper or lower jaw, thanks to the fact that the calibrated bushings determine an univocal axis of drilling according to what has been established beforehand by the clinician during the virtual planning of the surgery, typically by using an implant planning software.
  • the immediate load implantation technique though very efficient and widespread, entails however operative drawbacks.
  • Aim of the present invention is to propose a novel and original solution to the above- highlighted problems present in the known state of the art.
  • a first object of the present description is a dental implantology bushing for a surgical guide as defined by claim 1.
  • a second object of the present description is a dental implantology surgical guide as defined by claim 7.
  • a further object of the present invention is a dental implantology kit as defined by claim 8.
  • the present description refers to a bushing for a surgical guide to be used in dental implantology surgery, characterized in that it comprises in its cavity at least one ring, coaxially arranged with respect to an axis of drilling, supporting a plurality of rotating members arranged along its height.
  • Such rotating members concomitantly in contact with the bushing on one side and the drill of the drilling burr on the other side, allow, as described in detail below, to decrease friction between the bushing and the drill itself when the latter is fit in the surgical guide.
  • the arrangement of the rotating members along the height of the ring, as described in more detail below, is such that contact between them and the drill occurs along at least two perimeter lines, parallel to each other and defined each by a rotating member,
  • the advantages deriving from a bushing according to the present description are realized in a significant decrease of the inconveniences highlighted above, associated to the use of bushings as described in the known state of the art.
  • the main advantage therefore consists in an optimization of the immediate load technique, with evident operative benefits for the surgeon and positive effects for the patient.
  • the bushings according to the present invention allow both to decrease friction between the drill and the internal surface of the bushing and, therefore, also to limit or avoid overheating of the bushing itself, as well as to prevent drill deviations from the axis of drilling defined beforehand by the surgeon.
  • Figure 1 is a depiction of a lower dental arch in which osteointegrable implants comprised of metal pins are visible;
  • Figure 2 is a depiction related to a dentistry burr equipped with a cutting drill during a dental arch drilling step
  • FIG. 3 schematically illustrates a surgical guide which, by the bushings, guides the drill in the dental arch drilling step
  • Figure 4 shows a surgical guide in which the guiding function carried out by the bushings for the drill of the dental burr is evident
  • Figure 5 is a depiction related to a view of the drill inside the guiding bushing;
  • Figures 6A and 6B show two views related to the preferred embodiment of a ring supporting rotating members, comprised in a bushing according to the present description;
  • Figure 7 schematically illustrates an embodiment of the bushing according to the present description, having a cylindrical guiding surface and a ring supporting rotating members, which acts as guiding bushing for a drill;
  • Figure 8 shows an embodiment of the bushing according to the present description, having a cylindrical guiding surface and a ring supporting rotating members, in which the presence of a space for transit of substances, e.g. a saline solution, is evident;
  • Figure 9 shows a sectional view of the preferred embodiment of the bushing described hereinafter;
  • Figure 10 shows a sectional view of a second embodiment of the bushing of the present description.
  • Figures 1 , 2, 3, 4, 5 schematically refer to a dental implantology surgery performed with use of a surgical guide and bushings known to a technician in the field.
  • pins 1 inserted in a patient's lower jaw 2 are shown, while in Figure 2 it is illustrated a step of drilling the lower jaw 2, by use of a burr 3 equipped with a cutting drill 4.
  • Figure 3 depicts a scheme related to the drilling step, in a direct load surgery, assisted by the presence of a surgical guide 5 (further detailed in Figure
  • a bushing 10 is a bushing for a surgical guide 1 1 used in the odontological field in dental implantology surgery.
  • a surgical guide 1 1 used in the odontological field in dental implantology surgery.
  • a dental instrument like e.g. a drill of a dental burr along an axis of drilling defined beforehand, by a virtual planning of the surgery, by the surgeon.
  • surgical guide, or surgical template it is instead denoted an odontological (dental) structure reproducing the surface of a patient's dental impression, and typically used by the specialist physician as guide during prosthesis implantation.
  • the surgical operation for the insertion of implants into a patient's upper or lower jaw is characterized by a series of successive steps, of which the one technically more delicate is represented by drilling of the upper or lower jaw for the insertion of one or more pins.
  • Drilling is performed by the use of a dental burr equipped with a cutting drill. Therefore, the bushing 10 described herein is a guide apt to direct a drill 12 of a dental burr along an axis of drilling defined beforehand by the surgeon by virtual planning.
  • the bushing 10, in particular, allows at least to limit, if not to completely avoid, deviations of drill 12 from the axis of drilling suitable for a specific implantology surgery.
  • the drill 12 is not fixed to the ring 15; therefore, in other words, the drill is always free to slide along the sense of the axis of drilling with respect to the ring 15 itself.
  • This aspect is particularly advantageous, since errors in drill positioning with respect to the axis of drilling a, defined at the stage of virtual planning of the surgery, are corrected with the fitting of the drill in the ring 15 comprised in the bushing, which therefore acts as directing guide for 5 the drill itself.
  • the advantage of preventing drill deviations from the axis of drilling, previously determined as ideal by the surgeon, is also guaranteed by the peculiar arrangement of rotating members 16 as described below.
  • the clinician by suitable software, can plan in a virtual way the surgery to be performed, and set an ideal axis of drilling depending on the i o patient and the operating needs.
  • the bushing 10 taking into account the guiding function it has to perform, be positioned and/or oriented in the surgical guide 11 so as to guarantee a drilling along the ideal axis defined by the specialist in the preliminary planning stage.
  • the bushing 10 comprises an internal guiding surface 1 5 14 that, in the preferred embodiment of the invention, is of cylindrical shape.
  • the bushing 10 comprises at least one ring 15 coaxially arranged with respect to the cylindrical guiding surface 14.
  • the bushing 10 may comprise two or more rings 15, like, 5 e.g. , shown in Figure 10.
  • the height of each ring is restricted by the presence and size of rotating members 16, as also evident from Figure 10.
  • the arrangement of two or more rings along the internal guiding surface 14 may be any one.
  • the bushing 10 comprises a ring 15 having a height equal to the entire length of the guiding surface 14, as exemplified in Figure 9.
  • said ring may be made of any material deemed suitable by the technician in the field, consistently with what is described herein.
  • the ring 15 is held in position inside the bushing 10, as illustrated in Figures 9 and 10, by the presence of holding means.
  • a correct positioning of the ring 15 with respect to the cylindrical guiding surface 14 is defined as working position.
  • the working position is a position guaranteeing a stable fitting of the ring 15 in the bushing 10, therefore without a displacement of the ring 15 itself occurring in use of the surgical template, and in particular during the step of drilling the patient's upper or lower jaw. Therefore, the holding means should on the one hand enable holding of such a working position, yet, on the other hand, also enable removal of the ring 15 from the bushing 10 when, e.g., the surgeon has to use a drill 12 different from the preceding one.
  • the holding means may comprise, e.g., systems for coupling and/or anchoring the ring 15 to the internal guiding surface 14, or locking systems such as, e.g., retainers projecting inside the bushing 10 (see Figures 9 and 10) and comprised at the level of the bottom and/or top external edge of the internal surface 15.
  • the function of the ring 15 described herein is that of support, for supporting a plurality of rotating members 16. Supporting is performed by the presence in the ring 15 of seats 17 where each of said rotating members 16 are to be allocated.
  • the rotating members 16 and/or the seats 17 are present along the height/length of the ring 15 as exemplified in Figures 6A/B, 7 and 8.
  • the rotating members 16, and therefore also the respective seats 17, are present along the entire height/length of the ring 15, as shown in Figures 6A and 6B.
  • the purpose of the rotating members 16 is that of reducing friction inside the bushing 10 in the steps of use of the drill 12.
  • the rotating members 16 are apt to decrease friction between the cylindrical guiding surface 14 and the drill 12 when the latter is fit in the bushing 10. Such a result is attained thanks to the presence of members 16 that are able to rotate onto themselves as a result of the action of the drill 12 in the bushing 10 and/or of the rotation of the drill 12 during the step of drilling the patient's upper or lower jaw.
  • the rotating members 16 should, according to the present invention, be characterized by a diameter greater than the thickness of the ring 15, so that each member be concomitantly in contact on one side with the guiding surface 14 and on the other side with the drill 12, as shown in Figure 8.
  • the seats 17 present along the height/length of the ring 15 are essentially through seats, whose size and shape depend on those of the rotating members 16 for which they are intended.
  • the seats 17 should be designed so as to guarantee a stable support to the rotating members 17, but concomitantly enable rotation thereof along one or more axes of rotation.
  • the hereto-described concomitant contact is relevant so that the bushing 10, subject of the present description, has as a peculiarity not only the ability to decrease friction deriving from use of the cutting drill 12 during drilling in dental implantology surgery, but also to stabilize the drill itself by guaranteeing the holding of the axis of drilling singled out by the surgeon as suitable for a given implantology surgery.
  • the rotating members are arranged so that, having defined for each of them a perimeter line perpendicular to the axis of drilling, contact between said members and the drill in rotation occurs along at least two perimeter lines, parallel to each other.
  • the bushing 10 comprises at least a number of ten rotating members (those visible in the section of Figure 8) arranged along the entire height/length of the ring 15.
  • each of said members it is possible to define a perimeter line pi originating and ending at the center of the member itself and developing in all of its length perpendicularly to the axis of drilling a.
  • the perimeter lines p1 , p2... pn thus defined, by being all perpendicular to the axis of drilling, are therefore parallel thereamong and, in accordance with the present description, contact between members and drill 12 occurs at least by two perimeter lines pi, each associated to a rotating member 16.
  • the making of the bushing 10 may be carried out so that the bushing 10 be calibrated depending on the cutting drill 12 to be used. E.g., the thickness of the cylindrical internal surface 1 and/or the diameter of the rotating members 16 may be changed so as to guarantee decrease of friction according to what has been stated in the foregoing.
  • the rotating members 16 comprise one or more balls as schematically depicted in Figures 6A/B, 7 and 8.
  • one or more rotation rollers may be provided, in conjunction or not in conjunction with the above-mentioned balls.
  • Number and position of the balls and/or the rotation rollers along the circumference of the ring 15 should be such as to guarantee the friction decrease effect described herein. Therefore, e.g. , in the preferred embodiment shown in Figure 6A/B, a plurality of balls are arranged to form a series of crowns along the entire circumference of the ring 15.
  • the rotating members 16 comprise rotation rollers, such rollers, taking into account the effect they have to perform, will be arranged so that their axis of rotation be parallel to the axis of drilling a. In other words, the rotating members 16 should be able to rotate along the direction and the sense imparted by the action of the drill 12.
  • the rotating members comprise balls
  • said members could rotate along any direction imparted thereto by the drill 12.
  • a concomitant presence of balls and rollers in the same ring 15 may also be envisaged.
  • any type of material deemed suitable by the technician in the field in accordance to what has been described hereto may be used.
  • materials having essentially a low friction coefficient and a good mechanical strength will be selected.
  • such materials may be polymers like plastic or metal or alloys thereof, in particular stainless steel.
  • the peculiar structure/architecture of the bushing 10 allowing transit, in particular between internal surface 14 and ring 10, of a saline solution, e.g., cooling and/or disinfecting.
  • a saline solution e.g., cooling and/or disinfecting.
  • the solution permeates the patient's bone structure during drilling of the upper or lower jaw, allowing, e.g., cooling of the bone area of drilling with entailed improvement of osteointegration and significant reduction of the risk of dental implant loss.
  • Object of the present description is also a dental implantology surgical guide or template 1 1 comprising one or more bushings 10 according to what has been described in the foregoing.
  • the opening to be made on the surgical guide or template for each bushing 10 should take into account the thickness and diameter of the ring 15, beside the dimensions of the rotating members 16. In particular, in the preferred embodiment in which the rotating members 16 are all balls, the opening will therefore be calculated by summing the diameter of two balls with the thickness and the diameter of the ring 15.
  • a further object of the present invention is a dental implantology kit comprising means suitable for making a surgical guide 1 1.
  • Such means may e.g. comprise a first material suitable for obtaining a dental impression, such as paste, e.g. of agar, alginate and/or a dental spoon for applying paste on the dental arch(es), and/or gypsum for making the dental cast and/or a second material suitable for obtaining the surgical guide, such as, e.g., a biocompatible resin.
  • a first material suitable for obtaining a dental impression such as paste, e.g. of agar, alginate and/or a dental spoon for applying paste on the dental arch(es), and/or gypsum for making the dental cast
  • a second material suitable for obtaining the surgical guide such as, e.g., a biocompatible resin.
  • the kit could further comprise instruments and/or solution suitable for dental implantology.
  • Such means may comprise, e.g., pins, prostheses, drills, ablators, solutions like mouthwashes, sterile water, etc.
  • the kit could comprise also instructions and specification related to the individual elements constituting it.

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)
  • Orthopedic Medicine & Surgery (AREA)
  • Dental Tools And Instruments Or Auxiliary Dental Instruments (AREA)
  • Dental Preparations (AREA)

Abstract

La présente invention concerne une bague, un guide chirurgical et une trousse d'implantologie dentaire. En particulier, ladite bague comprend au moins un anneau agencé de manière coaxiale par rapport à l'axe de fraisage, supportant une pluralité d'éléments tournants agencés le long de la hauteur dudit anneau.
PCT/IB2012/052154 2011-06-10 2012-04-30 Bague d'implantologie dentaire Ceased WO2012168806A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITRM2011A000293 2011-06-10
IT000293A ITRM20110293A1 (it) 2011-06-10 2011-06-10 Boccola per implantologia dentale.

Publications (1)

Publication Number Publication Date
WO2012168806A1 true WO2012168806A1 (fr) 2012-12-13

Family

ID=44554994

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IB2012/052154 Ceased WO2012168806A1 (fr) 2011-06-10 2012-04-30 Bague d'implantologie dentaire

Country Status (2)

Country Link
IT (1) ITRM20110293A1 (fr)
WO (1) WO2012168806A1 (fr)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5290171A (en) * 1992-12-17 1994-03-01 Fereidoun Daftary Universal carrier for carrying various anatomical dental restorative components
US6138539A (en) * 1998-08-27 2000-10-31 Ace Surgical Supply Co., Inc. Torque ratchet tool particularly useful with endosseous dental implants
US6739872B1 (en) * 1999-06-03 2004-05-25 Arsline Sa Security device comprising a stop member for drilling instrument used in particular in dental surgery and device pre-calibrating and storing drilling depth
US20090004625A1 (en) * 2006-01-12 2009-01-01 Alessio Esposti Dental Drilling Assembly
DE202008012049U1 (de) * 2008-09-10 2009-02-19 Gäßler Zahntechnik GmbH Zahnmedizinisches Bohrführungssystem

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5290171A (en) * 1992-12-17 1994-03-01 Fereidoun Daftary Universal carrier for carrying various anatomical dental restorative components
US6138539A (en) * 1998-08-27 2000-10-31 Ace Surgical Supply Co., Inc. Torque ratchet tool particularly useful with endosseous dental implants
US6739872B1 (en) * 1999-06-03 2004-05-25 Arsline Sa Security device comprising a stop member for drilling instrument used in particular in dental surgery and device pre-calibrating and storing drilling depth
US20090004625A1 (en) * 2006-01-12 2009-01-01 Alessio Esposti Dental Drilling Assembly
DE202008012049U1 (de) * 2008-09-10 2009-02-19 Gäßler Zahntechnik GmbH Zahnmedizinisches Bohrführungssystem

Also Published As

Publication number Publication date
ITRM20110293A1 (it) 2012-12-11

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