EP2303177A1 - Dispositif d'usinage pour la réalisation d'un gabarit de forage destiné à des implants dentaires - Google Patents

Dispositif d'usinage pour la réalisation d'un gabarit de forage destiné à des implants dentaires

Info

Publication number
EP2303177A1
EP2303177A1 EP08749414A EP08749414A EP2303177A1 EP 2303177 A1 EP2303177 A1 EP 2303177A1 EP 08749414 A EP08749414 A EP 08749414A EP 08749414 A EP08749414 A EP 08749414A EP 2303177 A1 EP2303177 A1 EP 2303177A1
Authority
EP
European Patent Office
Prior art keywords
processing device
axis
tool
horizontal
drilling
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.)
Withdrawn
Application number
EP08749414A
Other languages
German (de)
English (en)
Inventor
Herbert Hatzlhoffer
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.)
Palti Ady
Original Assignee
Palti Ady
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 Palti Ady filed Critical Palti Ady
Publication of EP2303177A1 publication Critical patent/EP2303177A1/fr
Withdrawn legal-status Critical Current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
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/16—Bone cutting, breaking or removal means other than saws, e.g. Osteoclasts; Drills or chisels for bones; Trepans
    • A61B17/17—Guides or aligning means for drills, mills, pins or wires
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/16—Bone cutting, breaking or removal means other than saws, e.g. Osteoclasts; Drills or chisels for bones; Trepans
    • A61B17/17—Guides or aligning means for drills, mills, pins or wires
    • A61B17/1739—Guides or aligning means for drills, mills, pins or wires specially adapted for particular parts of the body
    • A61B17/176—Guides or aligning means for drills, mills, pins or wires specially adapted for particular parts of the body for the jaw
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q1/00—Members which are comprised in the general build-up of a form of machine, particularly relatively large fixed members
    • B23Q1/25—Movable or adjustable work or tool supports
    • B23Q1/44—Movable or adjustable work or tool supports using particular mechanisms
    • B23Q1/50—Movable or adjustable work or tool supports using particular mechanisms with rotating pairs only, the rotating pairs being the first two elements of the mechanism
    • B23Q1/54—Movable or adjustable work or tool supports using particular mechanisms with rotating pairs only, the rotating pairs being the first two elements of the mechanism two rotating pairs only
    • B23Q1/5406—Movable or adjustable work or tool supports using particular mechanisms with rotating pairs only, the rotating pairs being the first two elements of the mechanism two rotating pairs only a single rotating pair followed perpendicularly by a single rotating pair
    • B23Q1/5425—Movable or adjustable work or tool supports using particular mechanisms with rotating pairs only, the rotating pairs being the first two elements of the mechanism two rotating pairs only a single rotating pair followed perpendicularly by a single rotating pair followed perpendicularly by a single sliding pair
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T408/00—Cutting by use of rotating axially moving tool
    • Y10T408/03—Processes
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T408/00—Cutting by use of rotating axially moving tool
    • Y10T408/08—Cutting by use of rotating axially moving tool with means to regulate operation by use of templet, tape, card, or other replaceable information supply
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T408/00—Cutting by use of rotating axially moving tool
    • Y10T408/91—Machine frame
    • Y10T408/93—Machine frame including pivotally mounted tool-carrier
    • Y10T408/935—Machine frame including pivotally mounted tool-carrier including laterally movable tool-carrier

Definitions

  • Machining device for making a drilling template for dental implants
  • the invention relates to a processing device for dental technicians and dentists, in particular for making a surgical template for dental implants.
  • Dental implants are foreign bodies inserted in the jawbone.
  • the field of dentistry which deals with the implantation of dental implants in the jawbone, is referred to as implantology. Due to their usefulness as carriers of dental prostheses, dental implants assume the function of artificial tooth roots.
  • a drilling template is needed, which is made by means of a processing device.
  • a processing device comprises a chassis, a workpiece table for mounting the drilling template and / or a jaw model (eg plaster or plastic) and a holder for a drilling tool which is linearly displaceable in the longitudinal direction of the drill relative to the workpiece table, wherein between the workpiece table and the chassis or between the holder for a drilling tool and the chassis means are arranged for adjusting the inclination of the drill axis relative to the workpiece table about two mutually perpendicular axes of rotation.
  • a jaw model eg plaster or plastic
  • the technique of replacing a lost tooth with a dental implant and a denture or bridge attached to it has gained acceptance.
  • a hole for the implant root must be inserted into the jaw at the site of the lost tooth. Since the artificial tooth crown harmoniously integrates into the row of teeth, the implant root is to have the largest possible diameter for improved fit and the bone supply in the jaw is limited, the position and angular orientation of the bore must be precisely calculated and adhered to.
  • a drilling template is usually first created, which has at the predetermined location a angularly adjusted drill sleeve whose inner diameter corresponds to the diameter of a pilot drill for the jaw bore.
  • the surgical template is worn by the patient drilling the pilot hole.
  • This surgical guide can be made using a jaw model of the patient or purely from radiographic or computed tomographic data.
  • the necessary information for the determination of the direction of drilling information about the extent of the jawbone are obtained by means of a computed tomography, with different sectional views are possible through the jaw.
  • Other methods used to measure the jaw for making a surgical jig are e.g. the so-called bone mapping, the bone measurement with a probe or other measuring methods.
  • the drill sleeves are often attached freehand in the surgical template after evaluations of the X-ray and the jaw model, avoiding inaccuracies that would have to be corrected by widening the pilot hole in the jaw.
  • a template for the model is made.
  • positioning aids are introduced at the implantation sites, which serve to guide the surgical tools seen during bone processing.
  • the positioning aids are usually sleeves. The attachment of the sleeves in the template is usually done by pouring, Einpolyme- or screwing.
  • Surgical templates are thus auxiliary devices in order to make it easier for the implantologist to introduce a bore into the jawbone of a patient into which the implant is to be inserted.
  • the drilling template has a borehole created on the jaw model, which serves as a guide for the drill when the bore is introduced into the jawbone.
  • the drill hole should have the correct position and angular position.
  • Such a drilling template is disclosed, for example, in EP 1 321 107 A1.
  • the invention relates to a processing device for dental technicians and dentists, which is used in particular for making such a surgical template for dental implants.
  • a processing device for producing drilling templates. From EP 1 709 929 Al a processing device according to the preamble of claim 1 is known. It comprises a fixed stationary chassis with a fixed, fixed base plate which at least indirectly carries a workpiece table for receiving a workpiece, a tool holder movably arranged for the base plate for a tool, such as in particular a drill, with an approximately tical tool axis W, wherein the tool holder relative to the base plate about a first horizontal pivot axis A and a second horizontal pivot axis B is pivotally adjustable, the pivot axes A, B lie in a common horizontal plane and form an angle of approximately 90 ° to each other, and a traversing device for moving the tool holder relative to the workpiece table, wherein the traversing device is articulated on the chassis or the base plate, carries the tool holder and has two translational axes X, Y, along which the tool holder is adjustably movable by means of the traversing device, wherein the first
  • DE 197 09 215 A1 describes a device and a system for producing a drilling template for dental implants, which has a stationary frame on which a work table can be displaced with a jaw model with a drilling template about a vertical axis and in a horizontal plane in two mutually perpendicular directions is arranged. For adjusting the horizontal position of the workpiece, it is positioned with the workpiece table in two horizontal translational directions by moving the workpiece table.
  • the Frame carries a tool holder, which is pivotable relative to the frame about two horizontal axes in order to position the drill to be arranged in the tool holder in different angular positions relative to the drilling template can.
  • the device has five adjustable degrees of freedom in order to be able to apply different positions of the drilling template to the drill at different angles.
  • FR 2 687 947 A1 and WO 1995/00079 A1 relate to the general state of the art of positioning devices.
  • the present invention is based on the object of providing a machining device which further improves the work with the model arranged thereon and, in particular, also permits the positionally accurate introduction of boreholes into the drilling template.
  • the object of the present invention is therefore to improve a processing device of the type mentioned above both with respect to its accuracy as well as its ergonomics and automatability with respect to the working or adjustment possibilities.
  • a processing device for dental technicians and dentists, in particular for making a surgical template for dental implants, thus comprises a fixed, stationary chassis with a fixed, stationary base plate, which at least indirectly carries a workpiece table for receiving a workpiece, a tool holder for movably arranged to the base plate a tool, such as in particular a drill, with an approximately vertical tool axis W, wherein the tool holder is pivotally adjustable relative to the base plate about a first horizontal pivot axis A and a second horizontal pivot axis B, wherein the pivot axes A, B lie in a common horizontal plane and form an angle of about 90 ° to each other, and a traversing device for moving the tool holder relative to the workpiece table, the traversing on the
  • Chassis or the base plate is hinged, the tool holder carries and two translational axes X, Y, along which the tool holder is movably movable by means of the displacement device, wherein the first translation axis X and the second translation axis Y are oriented in the horizontal direction and the first translation axis X and the second translation axis Y lie in a common horizontal plane and form an angle of approximately 90 ° to each other, and the tool holder along a third translation axis Z, which is identical to the tool axis W, is movable relative to the workpiece table, and and has the peculiarity that - the traversing device is designed as a movable, inherently rigid C-frame, an upper horizontal, a middle vertical and a lower horizontal C-frame part, the first horizontal translation axis X is oriented transversely to the C-frame and parallel to the second horizontal pivot axis B, - the second horizontal translation axis Y in the direction of the upper and lower C-frame part and
  • the indication of a pivot axis or translation axis usually refers to the direction of movement which the corresponding part, i. the tool holder or the C-frame or its upper or lower C frame part follows during movement, for example with respect to the central axis of the moving part.
  • At least two, preferably all three axes of the two horizontal pivot axes A, B and the tool axis W intersect at a common point of intersection O.
  • the second horizontal translation axis Y intersects the third translation axis Z at an intersection point S, in particular with respect to a vertical orientation of the third translation axis. It can be provided in a further advantageous embodiment that the intersection S does not coincide with the common point of intersection O, that the intersection S is below the common point of intersection O, that the point of intersection S lies below the workpiece, that the point of intersection S lies below the horizontal plane in which the first horizontal translation axis X runs and / or that the point of intersection S lies within the base plate.
  • the upper C-frame part preferably serves as a cantilever arm for the tool receptacle, i. the tool holder is attached to the upper C-frame part in a position fixed relative to the upper C-frame part.
  • the tool holder is adjustable relative to the base plate or the tool table along the three translational axes X, Y and Z, in order thereby to be able to approach all required working positions of the processing device or the workpiece positioned thereon with the aid of the tool holder or the tool.
  • the user especially if he gets the setpoints for all adjustable coordinates given by a computer, quickly and easily bring the tool in position in order to then perform the editing process can.
  • the workpiece table or a workpiece holder of the workpiece table is designed for the workpiece such that the workpiece is pivotable about a vertical pivot axis C extending perpendicularly to the base plate so as to also move the workpiece relative to the tool holder or tool C-axis can be swiveled up to 360 °.
  • the rotation about the C-axis can serve to move the workpiece to a different position in order to be able to drill large angles if the deflection of the A and B axes is limited in terms of apparatus.
  • This current through the workpiece pivot axis C forms a fixed reference point.
  • the lower C-frame part is articulated to an XY coupling carrier, relative to the lower C-frame part along the second horizontal translation axis Y is adjustably displaceable, wherein the XY coupling carrier along the first horizontal translation axis X is adjustable displaceable. This allows a defined and well controlled positioning.
  • the said pivot and translation axes are suitably combined with locking means to a once set Schwenk designated. Translational position during the entire work process to be able to maintain. Only the first translational axis Z, which corresponds to the tool axis W, must be movable in the direction of the tool axis for the machining process, ie, in particular for drilling a borehole, at least as far as movable until a predetermined stop is reached.
  • the locking means expediently consist of Kegelklemmungen to allow for large-scale conical surface pressures and not only point impressions a secure and unadulterated definition.
  • the adjustable and to be set coordinates which can be specified for example by a diagnostic software as a setpoint for the position and orientation of the respective borehole in the drilling template, by appropriate display means indicating the respective actual value, are taken into account when adjusting the various axes, until finally all actual values correspond to the specified target values.
  • the data determined by the diagnostic software are in ASCII format, that they can be transferred to a setpoint table and compared with the actual values that are also available in ASCII format.
  • the pivot axes A, B and / or the translational axes X, Y, Z accordingly advantageously have scanning means by means of which digitized actual position data can be generated via the pivoting and / or translational position.
  • the adjustment of the various axes and thus the changing of the actual values to reach the desired values can be done manually on the one hand; but it is also possible that on the axes motorized actuators, e.g. Servo motors or linear drives, are provided which perform the adjustment movements in the direction of rotation or translation. In this case, an automated setting of the drilling position through to automated drilling is possible.
  • motorized actuators e.g. Servo motors or linear drives
  • the machining device may advantageously comprise one or more of the following motorized actuators: for adjustably pivoting the tool holder about the first pivot axis A and the second pivot axis B for adjustable movement of the C support frame along the first horizontal translation axis X and the second horizontal translation axis Y, for adjustable movement of the tool along the tool axis W and / or the tool holder along the third translation axis Z.
  • the motorized actuators can be used for automated machining of the automatic setting of defined positions can be designed so as to be controllable by means of digital nominal positioning data.
  • the user may receive a (eg, visual or audible) enable signal, whereupon he may begin the machining operation and create the wellbore. If, during the machining process, the tool has also reached its nominal value along the Z-axis, the user can be informed by a further optical or acoustic indication of this and the machining can be interrupted.
  • a eg, visual or audible
  • the digitization of the adjustment data in conjunction with motorized actuators allows automated setting of the drilling position through to the automated drilling of one or more holes.
  • FIG. 1 is a schematic diagram of a processing device according to the invention in side view
  • FIG. 2 shows a schematic diagram of the processing device of FIG. 1 in front view
  • Figure 3 is a schematic diagram of the processing apparatus of Fig. 1 in plan view
  • FIG. 4 shows a perspective principle view of the processing device of FIG. 1.
  • a processing apparatus 1 which has a chassis 2 with a horizontal lower base plate 3, the fixed on a (not shown) underground such as a laboratory table, etc. placed over feet 4, 5 or attached to the ground can be.
  • the base plate 3 carries a workpiece table 6 with a model receiving plate on which a (not shown) workpiece or model, such as a jaw model can be fixed, the position of the model recording plate relative to the base plate 3 via additional actuators 7, so-called articulators in their inclination and on the other hand is almost arbitrarily adjustable via the pivotable mounting about a perpendicular to the base plate 3 extending vertical pivot axis C.
  • the chassis 2 and the base plate 3 are fixed to the ground and stationary.
  • a traversing device 8 is articulated for moving a tool holder 9.
  • the traversing device 8 is designed as a movable, inherently rigid C-frame 10 comprising an upper horizontal C-frame part 11, a central vertical C-frame part 12 and a lower horizontal C-frame part 13, the tool holder 9 carries and two translational axes X, Y, along which the tool holder 9 by means of the displacement device 8 can be moved adjustable.
  • the first translation axis X and the second translation axis Y are oriented in the horizontal direction and lie in a common horizontal plane, wherein they form an angle of approximately 90 ° to each other.
  • the first horizontal translation axis X is transverse to the C support frame
  • the lower C-frame part 13 is along the first horizontal translational axis X and along the second horizontal translation axis Y relative to the base plate 3 and the workpiece table 6 adjustable movable.
  • the horizontal movement of the C-frame 10 is effected via suitable drives, for example a spindle drive or a linear drive, which interact with corresponding receptacles and linkages with the chassis 2 or the base plate 3 and the lower horizontal C-frame part 13.
  • suitable drives for example a spindle drive or a linear drive, which interact with corresponding receptacles and linkages with the chassis 2 or the base plate 3 and the lower horizontal C-frame part 13.
  • the method of the C-frame 10 along the two horizontal translation axes X, Y can be realized, for example, that the lower C-frame part 13 is hinged to an XY coupling support 14, opposite the lower C-frame part 13 along the second horizontal translation axis Y is adjustably displaceable, wherein the XY coupling carrier 14 is adjustably displaceable along the first horizontal translation axis X.
  • the second horizontal translation axis Y extends in a horizontal plane which is located at a distance H below the horizontal plane in which the first horizontal translation axis X passes.
  • This embodiment has proved to be particularly advantageous in terms of ease of implementation and yet high rigidity, which is required for high-precision machining.
  • the upper horizontal C-frame part 11 serves as a cantilever arm which carries at its front end an eccentric 15, which may be arranged axially or laterally.
  • the eccentric arm 15 in turn carries the tool holder 9 laterally.
  • the tool holder 9 is thus movably arranged relative to the base plate 3 or the workpiece table 6 by means of the C-supporting frame 10.
  • the tool holder 9 can receive a tool, for example a drill 16 or an insertion shaft for laboratory implants, and has an approximately vertical tool axis W.
  • the tool holder 9 together with the eccentric arm 15 with respect to the upper horizontal C-frame part 11 by a first pivotable horizontal axis A, wherein the pivot axis A is parallel to the second horizontal translation axis Y. If the eccentric arm 15 is arranged eccentrically to the pivot axis A and also to the central axis of the upper horizontal C-frame part 11, this ensures that the first horizontal pivot axis A and the tool axis W intersect at a common point of intersection O.
  • the tool holder 9 is also adjustably mounted pivotably about a second horizontal pivot axis B, for example relative to the eccentric arm 15, wherein the pivot axes A, B lie in a common horizontal plane, form an angle of approximately 90 ° to each other and the second horizontal pivot axis B parallel to first horizontal translation axis X is oriented.
  • the second horizontal pivot axis B is perpendicular to the second horizontal translation axis Y of the C support frame 10, perpendicular to the first horizontal pivot axis A, perpendicular to the tool axis W and also perpendicular to the main extension plane of the Exzenterarms 15 and passes through said common intersection point O. This leaves ensure that a pivoting of the tool holder 9 leads to a minimum lateral deflection.
  • an inserted into the tool holder 9 tool 17 is shown, which consists of a drill with a drill 16.
  • the drill tip is located on the said tool axis W.
  • the tool holder 9 is displaceably fixed to the eccentric arm 15, wherein the displacement movement takes place along a third translation axis Z, which runs along the tool axis W.
  • the three translation axes X, Y, Z are preferably arranged according to the Cartesian coordinates in space perpendicular to each other.
  • the pivoting angle about the pivot axes A and B is about 45 ° and about the pivot axis C about 360 °.
  • the second horizontal translational axis Y advantageously intersects the third translation axis Z an intersection point S, in particular with respect to a vertical orientation of the third translation axis Z.
  • the axes mentioned can be scanned in each case via sensors (not shown) with regard to their orientation or movement or position, in order to generate digitized data which, when connected to a computer via an interface, allows this actual position data to be compared with specified target value data which can be developed and transmitted by external software.
  • the actual values may also be transferred to a display device (also not shown) where they may be compared with the setpoints to facilitate the adjustment of the respective axes.
  • the recorded actual values, which are used when machining the workpiece can be stored in a black box (also not shown) and archived without manipulation.
  • a holder 18 for a cutting arm can be seen, which can be used to edit the arranged on the workpiece table 6 workpiece with a milling cutter.
  • a holder 18 for a cutting arm can be seen, which can be used to edit the arranged on the workpiece table 6 workpiece with a milling cutter.
  • several inserted prosthetic posts which belong to a common prosthesis, can be parallelized on a jaw model clamped into the workpiece holder.
  • Figures 1 and 4 preferably on the left side, where the control elements 19 are located.
  • the first horizontal translation axis X oriented transversely to the viewing direction of the processing device 1 and while the workpiece table 6 viewing user oriented and the second horizontal translational axis Y is oriented in the direction of the processing device 1 using while the workpiece table 6 viewing user.
  • the user can take a fixed position relative to the workpiece when machining the workpiece on the workpiece table 6 by means of the processing device 1, since it is not moved during processing, but all required for editing movements by the C-frame 10 and the pivoting of the tool holder. 9 take place about the pivot axes A, B and the method of the tool holder 9 in the tool axis W (third translation axis Z).
  • the user also has an optimal view and freedom of movement, because the C-frame 10, ie, the central vertical C-frame part 12 is disposed away from him and thus a large area around the workpiece table 6 around free moving or Moving devices is, and also achieved by the highly stable mechanical structure of the device optimum machining precision.
  • a negative jaw impression for example plaster or plastic
  • a bite template on which the patient bites, forming a bite impression in a deformable mass of the bite template.
  • the bite template can simultaneously serve as an X-ray template and as a zero positioning element, so-called null key, for the later alignment of the drilling template in the processing device.
  • an X-ray image of the jaw and in the image suitable implants for the jaw and associated sleeves for the surgical template (diameter, length, etc.) and their positioning are determined by means of a graphical planning software.
  • the sleeves in the drilling template serve a pilot hole with a defined To drill depth in the pine.
  • the drilling direction or the drilling angle are predetermined by the position of the sleeve in the drilling template.
  • the data set determined by the planning software is then transferred to the processing device for setting the drill holes in the drilling template (and / or the jaw model, if applicable).
  • the drill template is made for example by means of a prosthesis already worn by the patient, which is to be supplemented, widened or stabilized, or by means of the jaw model.
  • the drilling template For drilling the holes in the drilling template, the drilling template is clamped together with the jaw model in the workpiece holder of the processing device.
  • the axes of the processing device are moved to a zero position and in this position of the processing device, the bite template is placed in a corresponding template receiving positioning in the tool holder is mounted, inserted into the processing device.
  • the bite template has for alignment with the template receiving positioning plate positioning elements, such as positioning pins, positioning holes or projections, which cooperate with corresponding positioning elements on the template receiving positioning plate form fit. This will result in the receiving clamped or inserted bite template aligned in the zero position of the processing device.
  • the drilling template with the jaw model is then aligned manually relative to the processing device by means of the bite template, in that the drilling template with the jaw model is brought into contact with the bite template by moving the workpiece holder. In this zero position, the workpiece holder is fixed.
  • the jaw model and the drilling template are positioned by means of the bite template in the NuII- position in the processing device.
  • the bite template and the associated template receiving positioning are removed from the tool holder and clamped the drilling device in the tool holder.
  • the processing device automatically drills the drill holes into the drilling template, or in embodiments in which the drill holes are to be placed in the jaw model, through the drilling template into the jaw model.
  • drill drilling template and jaw separately, which may be useful, for example, if different drill diameters are used.
  • a jaw model laboratory implant typically differs in material (e.g., aluminum rather than titanium) and surface finish from a dental jaw implant. - Possibly. Insert a prosthetic post into the lab analog.
  • Removing the denture from the jaw model Insert the surgical template into the oral cavity of the patient. - Drilling the implant bore in the jaw through the guide hole of the drilling template in the predetermined drilling depth. Remove the surgical template from the oral cavity.
  • This procedure presupposes that the dental implants or laboratory implants can be manually inserted into the holes in the jaw model with sufficient accuracy.
  • significant inaccuracies occur with respect to the position, orientation and depth of the implants used in the jaw model, with the result that later the dental implant does not fit exactly into the jaw or dentures not exactly on the dental implant in the jaw.
  • reworking is required when setting the dental implant or the denture, which is associated with complications and quality losses.
  • Such non-rotationally symmetrical dental or laboratory implants consist for example of a bone part which is inserted into the jawbone, and a mounting part, which is also referred to as prosthetic part, attachment posts, posts, pillars or crown stump and is anchored in the bone part.
  • the prosthetic parts may, for example, be axisymmetric, for example have a triangular, square, pentagonal or hexagonal cross section. What they have in common is that they do not rotate around their axial longitudinal axis in any direction of rotation. Axis can be used, but a certain orientation must be adhered to. This orientation is usually such that a surface of the prosthetic part, ie, for example, an edge of a triangular or polygonal cross-section, must point exactly forwards in relation to the oral cavity.
  • this orientation can be seen on the prosthetic parts and the associated bone parts by a marking, and the insertion depth and also the orientation need not be exactly observed when inserting the bone parts and prosthetic parts.
  • the processing device 1 provides an advantageous possibility of realizing the accuracy requirements with regard to the requirement to insert the dental or laboratory implants with high precision into the implant bores in the jaw model.
  • a processing device 1 according to the invention for dental technicians and dentists, in particular for preparing a surgical template for dental implants, can be used not only for drilling surgical templates, but also for inserting laboratory implants into a jaw model. The procedure described above is modified as follows:
  • This procedure ensures that the dental or laboratory implants are accurately inserted into the holes in the jaw model and in the jaw for their positioning, including depth and / or orientation about the longitudinal axis.
  • a correspondingly configured processing device 1 accordingly has the feature that the matic drilling a borehole, in particular in a jaw model, used by a drilling tool target positioning data stored and automatically set a dental or laboratory implant into the borehole by means of a setting tool using the stored target positioning data, and the processing device for automatically setting a Dental or laboratory implant is formed in a boring bored automatically with the machining device using a setting tool and the stored target positioning data
  • a corresponding method for automatically placing a dental or laboratory implant in a borehole of a jaw model comprises the following steps:
  • Target positioning data are designed controllable, in particular with a processing device 1 according to the invention, by means of a drilling tool based on stored Solltechniks- data, and automatically setting a dental or laboratory implant in the borehole by means of a setting tool with the processing device 1 using the stored target positioning data ,
  • the processing device 1 provides an advantageous possibility of realizing the accuracy requirements with regard to the requirement to insert the drill sleeves with high precision into the drill holes of a drilling template.
  • the above procedure is modified as follows: Drilling of the guide hole in the drilling template using a drilling tool inserted into the tool holder 9.
  • This procedure ensures that the drill sleeves are accurately inserted into the pilot drill holes in the template for their positioning, including depth and / or orientation about the longitudinal axis.
  • a corresponding processing device 1 accordingly has the feature that the target positioning data used for the automatic drilling of a borehole, in particular in a drilling template for a dental or laboratory implant, can be stored by means of a boring tool and automatically set a drill sleeve into the borehole by means of a Setting tool can be called using the stored desired positioning data, and the processing device 1 for automatically setting a drill sleeve in a bored automatically with the processing device 1 well below Use of a setting tool and the stored nominal positioning n istsflower is formed.
  • a corresponding method for the automated setting of a drill sleeve in a surgical template for a dental implant comprises the following steps:
  • Automatic drilling of a borehole in the drilling template with a processing device having motorized actuators which are designed to automatically set defined positions based on digital target positioning data, in particular with a processing device 1 according to the invention, by means of a drilling tool on the basis of stored target positioning data, and automatic setting a drill sleeve in the wellbore by means of a setting tool with the processing device using the stored desired positioning data
  • the setting of the position and angular position parameters of the boreholes or the dental implants, prosthetic parts or boring sleeves is optimally separated from one another.
  • the tool 17 can be moved three-dimensionally in its position by means of the three translational axes X, Y and Z, the direction of the tool 17 can be effected exclusively by tilting the holder for the tool 17 about the pivot axes A and B.
  • the mechanical design of the processing device 1 is such that a high mechanical rigidity is provided, while at the same time offering optimum operability and automation.
  • the invention thus offers the advantage of being able to coordinate the essential adjusting options so that the associated axes coincide in the tool 17 and thus does not automatically lead to the adjustment of an axis that the processing area by a too large pivoting range as in eccentrically arranged tool axes changes.
  • the invention offers the advantage of a processing device 1, which allows ergonomically optimal, reproducible and highly accurate work. LIST OF REFERENCE NUMBERS
  • a first horizontal swivel axis for tool B second horizontal swivel axis for tool C vertical swivel axis for tool H distance O common intersection of A, B and W.
  • first horizontal translation axis for tool (across arm) Y second horizontal translation axis for tool (along cantilever arm) Z third approximately vertical translation axis for tool

Abstract

L'invention concerne un dispositif d'usinage (1) destiné notamment à la réalisation d'un gabarit de forage pour implants dentaires. Un outil (17) peut se déplacer le long de trois axes de translation (X, Y, Z) et pivoter autour de deux axes de pivotement (A, B). Selon l'invention, un dispositif de déplacement pour l'outil (17) présente un châssis de support en C (10) qui peut se déplacer le long de deux axes de translation horizontaux (X, Y).
EP08749414A 2008-05-09 2008-05-09 Dispositif d'usinage pour la réalisation d'un gabarit de forage destiné à des implants dentaires Withdrawn EP2303177A1 (fr)

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PCT/EP2008/003736 WO2009135513A1 (fr) 2008-05-09 2008-05-09 Dispositif d'usinage pour la réalisation d'un gabarit de forage destiné à des implants dentaires

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EP2303177A1 true EP2303177A1 (fr) 2011-04-06

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US (1) US20110280674A1 (fr)
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US20110280674A1 (en) 2011-11-17

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