US20080038692A1 - System and Arrangement for Production and Insertion of a Dental Bridge Structure - Google Patents

System and Arrangement for Production and Insertion of a Dental Bridge Structure Download PDF

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Publication number
US20080038692A1
US20080038692A1 US10/582,417 US58241704A US2008038692A1 US 20080038692 A1 US20080038692 A1 US 20080038692A1 US 58241704 A US58241704 A US 58241704A US 2008038692 A1 US2008038692 A1 US 2008038692A1
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United States
Prior art keywords
template
equipment
production
jaw bone
arrangement
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.)
Abandoned
Application number
US10/582,417
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English (en)
Inventor
Matts Andersson
Izidor Brajnovic
Andreas Pettersson
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.)
Nobel Biocare Services AG
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Nobel Biocare Services AG
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 Nobel Biocare Services AG filed Critical Nobel Biocare Services AG
Assigned to NOBEL BIOCARE SERVICES AG reassignment NOBEL BIOCARE SERVICES AG ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: BRAJNOVIC, IZIDOR, ANDERSSON, MATTS, PETTERSSON, ANDREAS
Publication of US20080038692A1 publication Critical patent/US20080038692A1/en
Abandoned legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C13/00—Dental prostheses; Making same
    • A61C13/0003—Making bridge-work, inlays, implants or the like
    • A61C13/0004—Computer-assisted sizing or machining of dental prostheses
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C13/00—Dental prostheses; Making same
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C13/00—Dental prostheses; Making same
    • A61C13/0003—Making bridge-work, inlays, implants or the like
    • A61C13/0006—Production methods
    • A61C13/0013—Production methods using stereolithographic techniques
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C13/00—Dental prostheses; Making same
    • A61C13/08—Artificial teeth; Making same
    • 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
    • A61C8/0048—Connecting the upper structure to the implant, e.g. bridging bars
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B33—ADDITIVE MANUFACTURING TECHNOLOGY
    • B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
    • B33Y50/00—Data acquisition or data processing for additive manufacturing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B33—ADDITIVE MANUFACTURING TECHNOLOGY
    • B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
    • B33Y80/00—Products made by additive manufacturing

Definitions

  • the present invention relates inter alia to a system for production and insertion of a real dental bridge structure in a real jaw bone structure by means of a number of successive function steps effected by equipment belonging to two or more different parties.
  • the equipment comprises identification equipment, computer appliance, stereolithography equipment, equipment for production of a physical template, equipment for production of a working model in cooperation with an articulator, equipment for production of the dental bridge structure and insertion equipment for fitting the dental bridge structure on the implant in the jaw bone structure.
  • Jaw bone structure can here relate, for example, to the structure of the upper jaw or lower jaw.
  • the invention also relates to an arrangement of a template produced by stereolithography and by means of information from the computer appliance and used for producing, on the one hand, a dental bridge structure that can be applied on an implant in the jaw bone structure, and, on the other hand, for guiding of hole-forming means, for example a drill, for forming holes for the implants.
  • the production of the template should be able to be reduced by 30-50% and, inter alia, the time of use in the stereolithography machine should be able to be reduced.
  • the precision of the produced products/dental bridges must remain high, as must the securing function, which must be maintained with tolerances of ca. 0.1-0.2 mm.
  • the system and the arrangement must also be non-critical from the handling point of view so that excellent production and insertion results are achieved.
  • certain time-consuming and cost-intensive operations must be eliminated, and, for example, the source of error in replacing a prosthesis or working model in the correct relation to the jaw bone is to be eliminated.
  • the invention aims to solve these problems inter alia.
  • the remaining operations too must be characterized by well proven and non-critical techniques which can be dealt with and performed by parties already operating on the market.
  • the parties must be able to cooperate in an optimal manner from the technical and financial aspect.
  • the number of parties must be able to vary and the functions must be able to be divided into testing, insertion and handling technique, production by means of STL (sterolithography technology) and model production, and production by the dental technician.
  • STL stereolithography technology
  • model production production by the dental technician.
  • higher-order parties may be used who provide a fully automatic production system for dental products, for example of the PROCERA® type.
  • the invention aims to solve this problem too.
  • the computer appliance is designed to receive, and to present on screen, first information transmitted from the identification equipment and based on detection of the jaw bone structure.
  • the computer appliance is arranged with operating elements by means of which it is possible to visually enter modification information concerning, on the one hand, a visual dental bridge structure applied on the visual jaw bone structure with associated teeth and dentine, and, on the other hand, orientations of the implants in the visual dental bridge structure and visual jaw bone structure.
  • the computer appliance is arranged to produce or to cause generation of a CAD file based on the first information and the modification information and to transmit the CAD file to the stereolithography machine.
  • the latter must be arranged to issue second information which can be processed in the equipment for production of the physical template with associated through-bores for sleeves arranged to determine the recessed positions and longitudinal directions for the implants.
  • the physical template will on the one hand form the basis for production of the working model and, on the other hand, serve as template in a hole formation defined with the sleeves and situated in the real jaw bone structure by means of the insertion equipment (drill).
  • the identification and computer appliances can be assigned to a first party consisting of a party treating a patient, for example a surgeon or dentist.
  • the stereolithography machine can be assigned to a second party.
  • the equipment for production of template, working model and real dental bridge structure can be assigned to a third party, for example a dental technician.
  • a fourth party with equipment of a higher order can also be involved, which fourth party can ensure information provision and/or handling or production of one or more of said functions or parts thereof.
  • the stereolithography machine can be accessed by any of said parties. Further embodiments of the system according to the invention are set out in the attached dependent claims concerning the system.
  • An arrangement according to the invention can be considered to be characterized by the fact that the template and the dental bridge structure are provided with through-holes, and the through-holes are provided with sleeves by means of which the degrees of recessing of the implants and orientations in the implants can be determined.
  • the sleeves are designed with special features for being able to achieve the relevant degree of recessing in the template.
  • the sleeves can be anchored with dental cement.
  • the template is arranged to reproduce or comprise a material or part which corresponds to the dentine or gum replacement over those parts which extend over the jaw bone, in which the dental bridge is intended to extend.
  • the template is produced in said machine from plastic material with very low coefficient of shrinkage. Further illustrative embodiments are set out in the attached dependent claims concerning the novel arrangement.
  • the planning files can be converted to CAD files and SLA models (rapid prototyping) can be ordered in so-called STL technology.
  • Part of the model can simulate the patient's upper jaw or lower jaw, while another part simulates the patient's dental prosthesis.
  • the working model is produced at the dental laboratory.
  • the template can be planned on computer using CAD and contains all data information, which means that a template can be ordered with the aid of STL technology.
  • the template can be provided with sleeves for guiding the drill, implant and anchoring pins. The sleeves can be cemented in place with dental cement.
  • the template can be used as an impression for production of the working model in plaster, which is mounted in an articulator with the aid of a bite index against the dental model of the opposite jaw/jaw bone.
  • the dental bridge can be produced on the working model obtained.
  • the template also forms the gum replacement over the implant in the jaw bone and around the spacers in connection with production of the working model.
  • FIG. 1 shows, in block diagram form, the equipment and parties involved
  • FIG. 2 shows, in side views and horizontal views, and enlarged in relation to FIG. 1 , parts of the function chain according to FIG. 1 ,
  • FIG. 3 shows, in vertical section, two different embodiments of sleeves used in the template
  • FIG. 4 shows, in vertical section, application of a sleeve in relation to an implant, and a fastening screw for the sleeve and the implant,
  • FIG. 5 shows, from underneath, a model of an upper jaw in which implants are applied with associated anchoring tubes and anchoring pins which extend horizontally in the dentine between the implants,
  • FIG. 6 shows a top view of the model according to FIG. 5 .
  • FIG. 7 shows a perspective view, from the side, of orientations for implants and anchoring pins in an upper jaw.
  • a template can be built up on computer using CAD by modifying the scanned patient prosthesis. In this way, it is possible to avoid the problem of having to produce the template at a dental laboratory, and this is an advantage since the template there is made of acrylic or of a plastic which has a certain shrinkage tendency, with deterioration of the precision as a consequence.
  • the template can be mounted in the articulator with the aid of a bite index. In this way, it is possible to solve the problem of recording the bite relationships of the jaws.
  • the template is used by the surgeon and solves the problem of placing the implant at the planned site in the patient's mouth.
  • the template has an arrangement for its anchoring with anchoring pins which are inserted from the side between the planned implants.
  • the template is held in place in the mouth with the aid of a bite index which is produced by the dental technician in the articulator.
  • This solves the problem of obtaining the correct bite relationship between the dental bridge and the opposite jaw after the operation.
  • the template contains all data for planning, so that it is not necessary to produce the bone part of the patient's jaw. This reduces the production time and costs in the stereolithography machine.
  • the source of error in the form of having to place the prosthesis model in the correct relationship to the bone part is eliminated.
  • a first party is indicated symbolically by 1 , a second party by 2 , and a third party by 3 .
  • the first party can be a surgeon, dentist, etc., who is to test and fit a dental bridge on a patient 4 .
  • the second party can be an owner of a stereolithography machine.
  • the third party can be a dental technician.
  • FIG. 1 also indicates a fourth party represented by a fully automatic production system for dental products; in the illustrative embodiment the party 5 is designated as PROCERA®.
  • the first party has access to identification equipment 6 .
  • the first party has access to a computer appliance 7 .
  • the stereolithography machine is symbolized by 8 .
  • the dental technician has access to equipment for production of a physical template 9 , and equipment 10 for production of a working model in cooperation with an articulator function.
  • the dental technician produces the final dental bridge in equipment 11 .
  • the identification equipment 6 can be of a type known per se.
  • the party 1 can produce an impression in a manner known per se using conventional means.
  • cameras, laser equipment, etc. can be used.
  • the computer appliance 7 comprises, in a manner known per se, a computer screen 7 a and an operating element 7 b which can consist of a keyboard, voice communication unit, etc..
  • the relevant jaw/jaw bone, in this case upper jaw, of the patient 4 can be indicated.
  • the upper jaw structure is symbolized by 7 c .
  • the first party can modify the jaw bone structure on the screen and build up a dental crown structure applied on the jaw bone. Such a structure is indicated by 7 d .
  • the upper jaw 7 c and the complete structure 7 d have been shown as two simultaneous representations. Said representations can of course be indicated one at a time.
  • the orientations for the implants and their directions are shown by 7 e .
  • the computer appliance can operate with conventional programs (CAD programs), which are available on the market, and file management systems.
  • CAD programs computer programs
  • the stereolithography machine can be of a type known per se and will therefore not be described in detail here.
  • the scanning equipment 6 provides the computer appliance with first information 12 which represents the scanned jaw bone structure. This is exported to the computer appliance.
  • the computer appliance generates a CAD file which is represented by 13 in FIG. 1 .
  • the CAD file is received by the stereolithography machine which sets the conditions for a physical model transferred to the dental technician 9 for application of sleeves, inter alia. This transfer is represented by 14 .
  • the physical model is shown by 15 .
  • the dental technician uses the model 15 for production of a working model 16 , and the transfer function between the units 9 and 10 is symbolized by 17 .
  • the production of the working model takes place in conjunction with an articulator function which is represented by 18 .
  • the bite index for the articulator function can be transferred from the patient 4 , the computer appliance 7 and/or the identification equipment 6 . Said transfers are represented by 19 , 20 and 21 . At entry to the articulator function, the bite index transfer has been symbolized by 22 .
  • the real dental bridge 23 is produced in the equipment 11 by the party 3 .
  • the physical template 15 can be transferred to the surgeon or equivalent. This transfer is represented by 24 .
  • the party 1 can also have access to equipment symbolized by 1 A. This equipment can consist of drilling equipment and insertion equipment for fitting the template and dental bridge on the patient 4 .
  • the finished dental bridge can be transferred to the first party, as has been represented by the transfer arrow 26 . Formation of holes in the patient's jaw bone with the aid of the template and insertion of the finished dental bridge can take place in a manner known per se and will therefore not be described in detail here.
  • the fourth party 5 can provide a support function or production of one or more of said function steps.
  • the automatic system comprises adaptation units 27 , 28 , 29 and 30 .
  • the equipment of the other parties can also be connected via adaptation units 31 , 32 , 33 , 34 , 35 , 36 , 37 and 38 .
  • the transfers can take place via general communication means 39 , for example the telecommunications network, Internet, computer network, etc.
  • the transfer functions are represented by two-direction arrows, which indicates that two-way communications exist.
  • the arrows are represented by 40 .
  • an upper jaw of a patient is indicated by 41 and a lower jaw by 42 .
  • the party 1 has inserted implants 43 in which a dental bridge is to be secured.
  • a set of teeth in the patient's lower jaw is indicated by 44 and, in accordance with what has been explained above, the bite relationship between the dental bridge to be implanted and the teeth of the lower jaw has been effected with the aid of a bite index.
  • Reference number 45 indicates a template in accordance with the above.
  • the template comprises, inter alia, recesses 46 for sleeves 47 used as guide members for formation of holes 48 in which the implants 43 are to be screwed or recessed.
  • Reference number 49 indicates the finished dental bridge structure to be anchored on the implants 43 in the upper jaw.
  • FIG. 3 shows a first embodiment of a sleeve 52 which is used for guiding a drill 53 for forming the implant hole 48 .
  • the sleeve has a stop edge 52 a which can cooperate with the template 54 via a stop surface 54 a on the latter.
  • FIG. 3 also shows a second embodiment 55 of a sleeve 56 which is provided with slits 56 a .
  • the template 57 in this case has an internal recess 57 a into which a snap-fit flange 56 b on the sleeve can snap when the sleeve assumes its final position in the template 57 .
  • a click noise function can be provided.
  • FIG. 4 shows an implant 60 applied in a jaw bone and dentine 59 .
  • the implant can cooperate with an attachment part 61 over which a sleeve 62 in accordance with the above can be engaged.
  • the components can be held together with a retaining screw 63 .
  • the sleeve 62 is mounted in the template or dental bridge part which is indicated by 64 .
  • the parts are shown in the disassembled state for the sake of clarity. The parts can be joined together in the direction of the arrow 65 .
  • a through-hole in the template 64 is shown by 64 a .
  • Cement which is used for securing the sleeve to the template is shown symbolically by 52 b.
  • a structural configuration of a physical template is indicated by 66 .
  • implants 67 are screwed securely to the template, compare with FIG. 4 .
  • the pins for anchoring are shown by 68 .
  • FIG. 6 shows the template according to FIG. 5 from underneath.
  • the anchoring pins 68 are designed with manual actuating members by means of which the pins can be screwed through the jaw bone in question. The figure shows that the anchoring pins extend between the implants 67 .
  • FIG. 7 shows, from the side and in perspective, the template according to FIGS. 5 and 6 applied to a jaw bone 69 .

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  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Oral & Maxillofacial Surgery (AREA)
  • Dentistry (AREA)
  • Epidemiology (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Manufacturing & Machinery (AREA)
  • Engineering & Computer Science (AREA)
  • Orthopedic Medicine & Surgery (AREA)
  • Dental Prosthetics (AREA)
  • Dental Tools And Instruments Or Auxiliary Dental Instruments (AREA)
US10/582,417 2003-12-10 2004-10-22 System and Arrangement for Production and Insertion of a Dental Bridge Structure Abandoned US20080038692A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
SE0303309A SE526223C2 (sv) 2003-12-10 2003-12-10 System och anordning vid framställning och isättning av tandbrouppbyggnad
SE0303309-9 2003-12-10
PCT/SE2004/001527 WO2005055856A1 (en) 2003-12-10 2004-10-22 System and arrangement for production and insertion of a dental bridge structure

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
PCT/SE2004/001527 A-371-Of-International WO2005055856A1 (en) 2003-12-10 2004-10-22 System and arrangement for production and insertion of a dental bridge structure

Related Child Applications (1)

Application Number Title Priority Date Filing Date
US12/572,169 Division US8186999B2 (en) 2003-12-10 2009-10-01 System and arrangement for production and insertion of a dental bridge structure

Publications (1)

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US20080038692A1 true US20080038692A1 (en) 2008-02-14

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US10/582,417 Abandoned US20080038692A1 (en) 2003-12-10 2004-10-22 System and Arrangement for Production and Insertion of a Dental Bridge Structure
US12/572,169 Expired - Fee Related US8186999B2 (en) 2003-12-10 2009-10-01 System and arrangement for production and insertion of a dental bridge structure

Family Applications After (1)

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US12/572,169 Expired - Fee Related US8186999B2 (en) 2003-12-10 2009-10-01 System and arrangement for production and insertion of a dental bridge structure

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US (2) US20080038692A1 (ja)
EP (2) EP2366359A1 (ja)
JP (1) JP4621210B2 (ja)
KR (1) KR101156077B1 (ja)
CN (1) CN1889897B (ja)
AU (1) AU2004296166B2 (ja)
BR (1) BRPI0417514A (ja)
SE (1) SE526223C2 (ja)
WO (1) WO2005055856A1 (ja)
ZA (1) ZA200604760B (ja)

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US8186999B2 (en) 2012-05-29
SE526223C2 (sv) 2005-08-02
CN1889897A (zh) 2007-01-03
US20100028827A1 (en) 2010-02-04
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SE0303309L (sv) 2005-06-11
EP1694235A1 (en) 2006-08-30
JP4621210B2 (ja) 2011-01-26
BRPI0417514A (pt) 2007-10-16
KR101156077B1 (ko) 2012-06-28
ZA200604760B (en) 2007-10-31
SE0303309D0 (sv) 2003-12-10
KR20070026351A (ko) 2007-03-08
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EP2366359A1 (en) 2011-09-21

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