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WO2008051163A1 - Système dentaire - Google Patents

Système dentaire Download PDF

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Publication number
WO2008051163A1
WO2008051163A1 PCT/SE2007/050784 SE2007050784W WO2008051163A1 WO 2008051163 A1 WO2008051163 A1 WO 2008051163A1 SE 2007050784 W SE2007050784 W SE 2007050784W WO 2008051163 A1 WO2008051163 A1 WO 2008051163A1
Authority
WO
WIPO (PCT)
Prior art keywords
bore angle
dental
bore
screw
connector
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/SE2007/050784
Other languages
English (en)
Inventor
Per Olof Leike
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.)
Kulzer Nordic AB
Original Assignee
Biomain AB
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 Biomain AB filed Critical Biomain AB
Priority to EP07835368A priority Critical patent/EP2076204A4/fr
Priority to CA002667244A priority patent/CA2667244A1/fr
Publication of WO2008051163A1 publication Critical patent/WO2008051163A1/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
    • 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
    • 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
    • A61C8/005—Connecting devices for joining an upper structure with an implant member, e.g. spacers
    • A61C8/0068—Connecting devices for joining an upper structure with an implant member, e.g. spacers with an additional screw
    • 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
    • A61C8/009—Implanting tools or instruments for selecting the right implanting element, e.g. templates
    • 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
    • A61C8/005—Connecting devices for joining an upper structure with an implant member, e.g. spacers
    • A61C8/0051—Abutment monobloc with restoration

Definitions

  • This invention pertains in general to the field of a dental system for determining an angle in a dental superstructure comprising a non-linear screw-channel.
  • a dental implant system The goal of a dental implant system is to restore the patient to normal function, comfort, aesthetic, speech and health regardless of the current oral condition.
  • These implant systems are based on the implantation of dental implants, such as dental implants made of biocompatible titanium, through insertion into the patient's jawbone.
  • dental implants such as dental implants made of biocompatible titanium
  • biocompatible titanium started in Sweden as early as 1950, and has since then been further developed and spread world-wide.
  • Methods are known in the art to attach a dental superstructure to an implant.
  • a couple of methods are based on the use of a screw member. Theses screw members can attach the superstructure to the implant, either directly or via spacers .
  • the optimum placement of the implant due to the present dental situation, often results in a non-optimum placement of the dental superstructure in terms of the patient's aesthetics, phonetics and bite. Therefore, there is a need in the dental field for greater freedom of placement of a dental implant in order to optimize the stability and success of the implantation, while still achieving good aesthetics, phonetics and bite of the patient. Furthermore, in the above mentioned dental situation there is a need to be able to use an implant placed optimally with regard to the dental situation, that is, the anatomy of the jawbone, while still allowing the dental superstructure to be applied in an optimal way to said implant, such that the mouth of a screw channel not is visible from outside the mouth of the patient.
  • the means already known in the art for achieving this goal include the use of angled spacers and dental superstructures attached to the implant with adhesive or with other techniques not based on the use of a screw member.
  • the angled spacers have many drawbacks and are characterized by adding significant height to the superstructure, multiple sources of errors, since the coordination of multiple parts undoubtedly leads this, an unnecessarily high price, as a result of the multiple parts and multiple manufacturing steps, increased risk of bacteriological attack, due to the several corners and surfaces exposable to this, weaker screw for the attachment of the dental bridge, since no follow-up draft of said screw is possible since a structure is applied on top of said angled spacers. It also results in an increased complexity of the attachment of the superstructure to the implant.
  • US 6,848,908 discloses an arrangement including an angled spacer element of this kind, including a first passage and a second passage.
  • the first passage is operative to fasten said spacer element in an implant
  • the second passage is operative to fasten a superstructure on said spacer element.
  • Superstructures attached to an implant without using a screw member results in less strength, difficulties in detachment and also incompatibility problems with commercially available implant systems of today.
  • an dental system for aiding the manufacturing of an improved superstructure would be advantageous, and in particular a superstructure allowing for the exclusion of angled spacer elements or fastening of a superstructure to an implant by adhesives, without being forced to place the mouth of the screw channel on a visual surface of the dental superstructure would be advantageous.
  • the present invention seeks to mitigate, alleviate or eliminate one or more of the above-identified deficiencies and to provide a dental system, a bore angle member, a bore angle connector, and a distance member of the kind referred to, and a manufacturing method thereof.
  • a dental system for determining a suitable angle for a dental superstructure with a non-linear screw-channel, said system comprising a bore angle member, comprising a head portion, said bore angle member being configured to be mounted on a dental implant, and a bore angle connector having a bottom portion for connection to said head portion of said bore angle member, whereby said bore angle member and said bore angle connector are pivotably connected to each other, and a bore angle member is provided, configured to be mounted on a dental implant, said bore angle member comprising a head portion configured to be pivotably connected to a bore angle connector, and a bore angle connector is provided, comprising a main portion and a bottom portion, said bottom portion being configured to be pivotably connected to a bore angle member, and a distance member is provided, configured to be connected to a bore angle member or a bore angle connector, such that the pivoting angle between said bore angle member and said bore angle connector is limited.
  • FIG. 1 is an illustration showing a cross-section of a superstructure according to an embodiment
  • Fig. 2 is an illustration showing a cross-section of a superstructure according to an embodiment
  • Fig. 3 is an illustration showing a cross-section of a superstructure according to an embodiment
  • Fig. 4 is schematic cross-section view of a bore angle screw according to an embodiment
  • Fig. 5 is schematic cross-section view of a bore angle connector according to an embodiment
  • Fig. 6 is schematic cross-section view of a bore angle screw according to an embodiment
  • Fig. 7 is schematic cross-section view of a bore angle connector according to an embodiment
  • Fig. 8a is schematic cross-section view of a distance member according to an embodiment
  • Fig. 8b is schematic cross-section view of a distance member according to an embodiment
  • Fig. 9a is schematic cross-section view of an system according to an embodiment
  • Fig. 9b is schematic cross-section view of an system according to an embodiment
  • Fig. 10a is schematic cross-section view of bore angle connector according to an embodiment
  • Fig. 10b is schematic cross-section view of bore angle connector according to an embodiment
  • Fig. 11 is schematic cross-section view of an arrangement according to an embodiment.
  • Fig. 12 is schematic cross-section view of an arrangement according to an embodiment. Description of embodiments
  • a superstructure comprising a main body, comprising a screw-channel 1 with a first mouth 2, through which screw- channel 1 a screw member is to be inserted, and a screw member seat 3 with a second mouth 4, for providing support to the head of said screw member during fixation of said dental superstructure to a spacer element or an implant 5 through said second mouth 4, whereby a communication is obtained between said first and second mouth, wherein at least one part of a central axis of said screw-channel 1 differs from a central axis of said second mouth 4.
  • the mouth 2 of the screw channel 1 may be located such that the superstructure may be attached/detached to a dental implant or a spacer element 5 where the mouth 2 of the screw channel 1 not is visible from outside the patients mouth.
  • a superstructure will herein be referred to as a superstructure with a non-linear screw- channel. Arrangements of non-linear screw-channels and how these may be configured in superstructures in respect of dental implants are also shown in Fig. 11 and 12. There is a need for a system or device for determining the angle (s) between the central axis of said first mouth 2 and the central axis of the second mouth 4.
  • a superstructure is first manufactured in a way known to the skilled artisan, and then provided with a communication according to above. Such a method is for example disclosed in the Swedish patent SE 509,437, but other manufacturing methods known to the skilled artisan, such as moulding etc., are also within the scope of the present invention.
  • the superstructure is, in contrast to the manufacturing methods according to the prior art, manufactured with integrated spacer elements, milled from one single-piece blank, such that the dental superstructure obtains a main body and spacer elements, wherein said main body and said spacer elements are integrated.
  • the term integrated means that the dental superstructure, comprising a main body, and the spacer elements are consisting of one piece of material, such that no interface is present in between said superstructure and said spacer elements.
  • the dimensions of spacer elements can be varied in accordance with the specific dental situation of a patient intended to receive said replacement structure.
  • the spacer elements When the superstructure is applied the spacer elements will be cooperating with dental implants, inserted and osseointegrated in bone tissue.
  • the length and angle, in respect of the jawbone, superstructure, and jawbone, of the spacer elements will be individual for each spacer in respective spacer position.
  • the material of said superstructure may be selected from the group comprising titanium, zirconium oxide, alloys of titanium and zirconium, and other biocompatible materials, or combinations thereof.
  • a superstructure wherein a central axis of at least one part of a screw- channel differs from a central axis of a mouth of a screw member seat is provided.
  • this is obtained, according to Fig. 2, by drilling a first straight bore 21 from a first point 22 on a side of the dental superstructure, at which first point 22 the mouth of the screw-channel is to be placed, and a second straight bore 23 from a second point 24 on the side of the dental superstructure intended to face the implant or spacer element. It is of course possible to drill the second bore 23 before the drilling of the first bore 21, while still being inside the scope of the present invention.
  • the first and second bores are drilled such that they intersect in the interior of the dental superstructure.
  • a third bore 31 may be drilled, according to Fig. 3, after the drilling of said first bore 21 and said second bore 23.
  • This third bore may result in a screw-channel.
  • This third bore may be drilled using said first and second bores as guides.
  • Said third bore may be drilled by using a drill bit with a cutting surface of a sufficient diameter to create a bore through which a screw member may be passed in order to attach the dental superstructure to a spacer element or an implant 5.
  • the third bore 31, i.e. the screw-channel 1 may preferably be drilled close to said second point 24, but not the whole way through.
  • the diameter of the third bore 31 is larger than the diameter of said second bore 23, shoulders 32 will form in the screw-channel 1. Said shoulders may then form the seat 3 for a screw member head in the bottom of the screw-channel 1, while being integrated with said superstructure.
  • a threaded part of a screw member inserted in the screw-channel may be passed through said bore, i.e. said second bore 23, to subsequently attach the dental superstructure to a spacer element or implant 5.
  • the diameter of said second bore 23 corresponds to the diameter of the threaded part of the screw member, whereby the screw member may be passed through said bore to fixate the superstructure to an implant or a spacer element 5.
  • a dental superstructure comprising a main body, comprising a screw- channel 1 with a first mouth 2, through which screw-channel 1 a screw member is to be inserted, and a screw member seat 3 with a second mouth 4, for providing support to the head of said screw member during fixation of said dental superstructure to a spacer element or an implant 5 through said second mouth 4, may be obtained.
  • a communication is obtained between said first mouth 2 and said second mouth 4.
  • the central axis of said first mouth 2 and the central axis of said second mouth 4 do not coincide.
  • first bore 21 and the second bore 23 are made with a conventional twist drill.
  • first bore 21 and the second bore 23 are drilled to a diameter of a suitable size for passing of the threaded part of a screw member, which screw member is used for attaching the superstructure to a spacer element or implant 5.
  • drill said second bore 23 using a drill bit with a cutting surface of a sufficient diameter to create a bore through which a screw member may be passed in order to attach the dental superstructure to a spacer element or an implant.
  • the superstructure is provided with a dental implant seat or a spacer element seat, such as a recess suitable for receiving a protrusion on said dental implant or spacer element. It is of course also possible to provide the superstructure with a protrusion and the dental implant or spacer element with a recess, as long as the seating effect is obtained.
  • This dental implant seat or a spacer element seat provides the advantage of easier assembling of the superstructure on a dental implant or a spacer element.
  • a dental technician and/or dental surgeon may build up a dental model based on the specific dental situation of a patient.
  • a bite template of the patient mouth anatomy made of e.g. wax, may be used for this purpose.
  • the bite template is produce by placing a material, such as wax, in the mouth of the patient having dental implants, and letting the patient bite the material, and thus an exact reproduction of the patient specific dental status is obtained.
  • the bite template thus contains information about the positions of the dental implants.
  • the bite template may then be used to create a dental model of the specific patient.
  • the dental technician and/or dental surgeon refines the dental model in respect of bore angles etc., such that e.g. the mouth of a screw channel not is visible from outside the mouth of the patient.
  • the final dental model thus reflects the desired final result.
  • a difficulty of manufacturing the superstructure with a non-linear screw-channel has been to translate the dental model information, such as information regarding the bore angles to an apparatus with capability of manufacturing the superstructure.
  • the bore angles may be fixated in the dental model before the manufacturing of the superstructure proceeds.
  • a bore angle member such as a bore angle screw, according to Fig. 4, is provided.
  • This bore angle screw comprises a head portion 41, and a screw member portion 42.
  • the head portion 41 may have a spherical or semi-spherical shape.
  • a screw recess 43 is provided, such that the screw member 42 of the bore angle screw may be screwed into e.g. a dental implant by means of a screwdriver having the corresponding inverted shape of the screw recess.
  • the screw recess has the shape of a hexagon. Different sizes of the screw member 42 may of course be used without departing from the scope of the present invention.
  • a bore angle connector 51 according to Fig. 5, is provided.
  • the bore angle connector may have a bottom portion 52 that precisely fit the shape of the bore angle head portion 41.
  • the bottom portion 52 may have the corresponding spherical diameter.
  • the bore angle connector has a main portion 53. This main portion 53 may resemble the shape and size of the bore that will be made for each dental implant in the resulting manufactured superstructure.
  • the bore angle connector bottom portion 52 is concavely shaped to receive the bore angle screw head portion 41, with the same diameter, however the bottom portion inlet area of the bore angle connector 52 is slightly smaller than the head portion 41 of bore angle screw.
  • the bore angle connector 52 may me pressed over the bore angle screw head portion 41, by expansion of the connector material, to become securely connected. This may for example be accomplished if the bore angle connector is manufactured of a resilient material, such as a plastic material.
  • the bore angle screw may be mounted on an implant, in the mouth of a patient or in a mould corresponding to the dental situation of a patient. A bore angle connector may then be mounted, such as snapped onto, the bore angle screw.
  • the bore angle connector may be pivoted into a position that corresponds to a position of a first mouth 2 of the superstructure intended to be manufactured by the aid of the system, said system comprising said bore angle screw and said bore angle connector, such that said first mouth 2 will be located in a suitable position on said superstructure that will not be visible from the outside of a mouth of a patient.
  • This angle may then be fixed and/or measured, and the manufacturer of the superstructure will know where to position said first and second mouth on said superstructure.
  • the angle between the bore angle screw and the bore angle connector will correspond to the angle between a central axis between said first mouth 2 and a second mouth 4, at a screw member seat 3.
  • a suitable position will be a position possible on the dental system used in case referred to, whereby a suitable screw member seat will be formed in the screw channel.
  • the bore angle connector bottom portion 52 is slotted, such that the bottom portion 52 may be pressed over the head portion of the bore angle screw, to snap or click around the bore angle screw head portion, in order to become more fixated. This may for example be accomplished if the bore angle connector is manufactured of a resilient material, such as a plastic material.
  • the bore angle connector 51 When the bore angle connector 51 is connected or pressed on the bore angle screw head portion 41, it may be pivoted, such as rotated, in the same way as a ball joint, if the head portion 41 is of a spherical or semi-spherical shape.
  • a degree of friction may be provided that makes interconnection between the bore angle connector bottom portion 52 and the screw head portion 41 suitable for remaining in one angle position, such that it requires a fair amount of force, e.g. applied by hand, to pivot, such as rotate, the bore angle connector 51 around the bore angle screw head 41.
  • the friction coefficient may be varied using different materials of the bore angle connector 51, and the bore angle head portion 41.
  • the interconnection between the bore angle connector bottom portion 52 and the screw head portion 41 may be such that the bore angle connector may be rotated into such an angle that the screw recess 43 may be reached, i.e. that the bore angle connector bottom portion 52 does not cover the screw recess. In this way the bore angle head portion 41 and the bore angle connector bottom portion 52 may be interconnected during the obtainment of information regarding angles and positions.
  • the bore angle head portion has a flat circular shape.
  • the bore angle connector may in this embodiment have a corresponding bottom portion, e.g. such that the circular shape fits into a recess in the bottom portion of the bore angle connector.
  • the recess may be angled such that the bore angle connector may only be rotated in the plane of the recess, and accordingly in the plane of the circular shape.
  • the head portion of the bore angle screw is attachable/detachable from the bore angle screw.
  • various head portions of different shapes may be selected, having different shapes for reducing the degree of rotation from three dimensions to two dimensions or even one dimension.
  • the dental technician and or dental surgeon may first, attach the bore angle screw into the dental implant of the dental model.
  • the attachable/detachable head portion is removed and is replaced by a new head portion.
  • a bore angle connector having a bottom portion corresponding to the attachable/detachable head portion of the bore angle screw is then connected to the attached head portion.
  • Using the attachable/detachable bore angle screw head portion and corresponding bore angle connector bottom portion will reduce the degree of rotation, and thus bore angle, to two or one dimensions.
  • An advantage of this embodiment is that as the degree of rotation is reduced for the bore angle connectors, the final dental model will be more robust and insensitive to outer conditions that might influence the bore angles, e.g. unintended applied forces on the dental model during transport to the manufacturer that otherwise might have changed the bore angles of the dental model.
  • the shape of the head portion of the bore angle screw and the corresponding bore angle connector shape may be any shape providing a means for rotation of the bore angle connector in respect the bore angle screw.
  • the bore angle screw head portion 61 has the same shape as the bottom portion 52 of the bore angle connector according to Fig. 5.
  • the bore angle connector bottom portion 72 has the same shape as the head portion 41 of the bore angle screw according to Fig. 4. This is illustrated in Fig. 7.
  • a distance member 80 is provided.
  • the distance member 80 may in use be placed between the implant and bore angle screw head portion.
  • this distance member 80 is configured such that it circumferences the bore angle screw. This may for example be obtained by configure this distance member in the form of a ring. This ring may be threaded to fit with the threaded part of the screw member 42. In this way this distance member 80 may be screwed passed the threaded part of the screw member 42, to thereafter fit with the unthreaded part of the screw member 42.
  • the function of the distance member 80 is to limit the angle of freedom of the bore angle connector 51 that is connected to the bore angle head portion 41.
  • the distance member 80 may be placed between the head portion of the bore angle screw and the dental implant without the need of being screwed through the threaded part of the bore angle screw.
  • the design of distance member may be suitable for attaching the distance member around the main portion of the bore angle screw. By attaching is meant that the distance member 80, e.g. in the form of a ring having at least the same diameter as the main body of the bore angle screw, and provided with an opening 81.
  • the opening 81 enables the distance member to be pushed around the bore angle screw main portion, i.e the part of the bore angle screw being located between the head portion 41 and the screw member portion 42.
  • the distance member may instead be placed on, or integrated with, the bore angle connector, to thereby provide the limitation of freedom of the pivoting of the bore angle connector in respect of the bore angle screw.
  • Fig. 9a and 9b illustrates two setups of said distance member for limiting the angle of freedom of the bore angle connector 91.
  • a distance member 92a with a height x is provided around a bore angle screw 93, which is screwed into a dental implant 94.
  • the bore angle connector 91 is attached to the bore angle screw head portion 95.
  • the possible angle between the bore angle connector and the bore angle screw, as the distance member is placed between the dental implant and the bore angle screw is indicated as y.
  • a distance member 92b with the height 2x is provided between the head portion and dental implant. This corresponds to a maximal angle of z. As may be observed from Figs.
  • the centre of the head portion of the bore screw angle determines the position of the screw member seat in the superstructure. In this way a sufficient distance is created from the screw member seat, such as the screw member seat 3, and the second mouth, such as the second mouth 4, of the screw channel 1, to provide a fixating effect when a screw member is screwed through said second mouth into a dental implant or a spacer element.
  • the distance member corresponds to the maximum bore angle for the dental system used.
  • the distance member hence determines a specific maximum bore angle for each dental system and/or dental implant. In this way a dental technician and/or a dentist may apply distance members on the unthreaded part of the screw member 42, which distance members certifies that the maximum angle of the chosen dental system not is exceeded.
  • a set of screw members 42 may only be used when a dental system accepting screw channel angles lesser than the angle that may be obtained by the interaction between the bore angle screw, comprising a head portion, such as a head portion 41, and an integrated distance member, and a screw member portion, such as a screw member portion 42, and a bore angle connector, such as a bore angle connector 51, when the bore angle connecter is angled until the bottom portion, such as the bottom portion 52, reaches, and thereby stops at, the distance member 80.
  • the dental technician and/or dental surgeon provides the dental model implants with one bore angle screw each. Then a bore angle connector is connected to each bore angle screw.
  • the dental technician and/or dental surgeon then modify the desired bore angle for each implant by rotating the bore angle connector into a desired angle.
  • a distance member according to an embodiment may be positioned between each bore angle screw head portion and the dental implant. By adjusting the height of the distance member, the desired angle may be achieved with high precision.
  • the connector is fixated to the dental implant, e.g. by means of fixating wax, plastic, tape, glue or any other fixating means. In this manner the remaining dental implants of the model is processed.
  • the end result will be a dental model having bore angle connectors with fixated angles to the dental implant length axis for each dental implant that requires bores with an angle.
  • the dental model may then be sent to a manufacturer for manufacturing a superstructure for the patient specific dental model.
  • the distance between the bore angle screw head and the dental implant will be fix as the bore angle screw has the same length and will be screwed into the implant completely.
  • a cylindrical cavity 101 is provided within the bore angle connector 51, extending from the end of the main portion 53 towards the end of the bottom portion 52.
  • the cylindrical cavity 101 may be located in the centre of the bore angle connector 102 as indicated in Fig. 10a and Fig 10b.
  • the cylindrical cavity extends from the end of the main portion 53 towards the bottom portion end 52, with a length smaller than the total bore angle connector length.
  • the cylindrical cavity extends throughout the total bore angel connector.
  • the cylindrical cavity may be used to precisely determine the position and angle of the bores in the manufacturing of the final superstructure.
  • the cylindrical cavity of the bore angle connector e.g. each bore angle connector of the refined dental model as mentioned above, is provided with an extended structure, such as a cylindrical structure fitting in the cylindrical cavity.
  • an extended structure such as a cylindrical structure fitting in the cylindrical cavity.
  • a photo scanner may be used to image the dental model. The information regarding the bore angles and the implant positions are then used in manufacturing the superstructure.
  • the extended structure has a predetermined length and a predetermined end shape, such as a circular shape. In this way it only requires one image from one camera direction to obtain all bore angles and dental implant positions of the dental model.
  • a predetermined end shape such as a circular shape.
  • the dental model comprising the extended structure (s) may then be scanned with a photo scanner in three dimensions such that the bore angle and exact position of the dental implant may be obtained for the entire dental model. This may be performed by inserting a cylindrical or other structure fitting the cylindrical cavity of each bore angle connector and subsequently image the cylindrical structures to determine the exact bore angle for each dental implant of the dental model in three dimensions, as well as the position of the dental implant using the knowledge of the bore angle screw head portion location.
  • the different members of the present invention i.e. the bore angle screw, the bore angle connector, and the distance member, may be manufactured of any suitable material or combinations of suitable materials.
  • These materials may for example be metals, plastic materials etc.
  • Such metals may for example be stainless steels, aluminum, titanium etc. It is thus possible to manufacture the bore angle screw of a suitable metal, such as a stainless steel, the bottom portion of the bore angle connector of a plastic material, the main portion of the bore angle connector of a metal, such as a stainless steel, and the distance member of a metal, such as a stainless steel.
  • the bore angle screw is made of plastic material.
  • the bottom portion of the bore angle connector 52 is made of a suitable metal, such as stainless steel or aluminum.
  • a tooth set-up may be mounted on the system comprising the bore angle screw (s), the bore angle connector (s) , and the distance member (s). This mounting may be accomplished by fixating with wax or plastic material. Thereafter, the tooth set-up may be disconnected from said bore angle screw (s) by snapping of the connector (s) there from, while still being connected to said bore angle connector (s) . The angle or angles between said bore angle screw (s) and said bore angle connector (s) may be determined before or after the mounting of the tooth set-up on said system. When the tooth set-up with attached connector (s) has been disconnected from said bore angle screw (s), the tooth set-up with attached connector (s) may be sent to the dentist, dental surgeon, or dental technician.
  • the tooth set-up with attached connectors may be sent to the dentist together with the bore angle screws, or the dentist, dental surgeon, or dental technician may have an own set of bore angle screws. Thereby, the dentist, dental surgeon, or dental technician may reconnect the tooth set-up with attached connector (s) to the bore angle screw (s), when the bore angle screw (s) have been attached to the dental implant (s), whereby the angles for the bore channels and the location of the mouths of the bore channels may be provided to thereby manufacture a fitting superstructure.
  • the final bore angles may vary in the dental model, created by the dental technician and/or dental surgeon.
  • the application of the tooth set-up may be performed both before and after the refinement of the bore angle, made by the dental technician and/or dental surgeon.
  • the bore angle of each implant may be refined in correspondence with the applied tooth set-up, giving a specific bore angle for each dental implant.
  • the bore angle may differ for each dental implants of the dental model.
  • the dental technician and/or dental surgeon applies, and refines the tooth set-up based on the maximum bore angle for each implant of the dental model.
  • the bore angle may differ for each dental implant of the dental model.
  • the bore angle is maximal for each dental implant in reference to the bore angle screw.
  • a combination of specifically set bore angles and the maximum bore angles for each implant may be used to precisely apply the tooth set-up.
  • the present invention provides solutions that facilitates in the dental modeling and the manufacturing of a dental superstructure.
  • the dental model of the specific patient is facilitated and the end result is easier to predict, e.g. by using a tooth setup in conjunction with the bore angle screw and bore angle screw connector.
  • the bore angles and position of the implants may be exactly reproduced in the manufactured dental superstructure, and hence the present invention solves the problem of converting the bore angles defined by the dental technician and /or dental surgeon precisely to be able to create a dental superstructure.
  • an embodiment of the invention may be physically, functionally and logically implemented in any suitable way. Indeed, the functionality may be implemented in a single unit, in a plurality of units or as part of other functional units. As such, the invention may be implemented in a single unit, or may be physically and functionally distributed between different units and processors.
  • a graphical user interface is provided.
  • the graphical user interface may be used as a computerized dental modeling tool by the dental surgeon or dental technician.
  • the graphical user interface may be provided with a number of windows, each representing e.g. an observation plane, or 3D model.
  • the graphical user interface is configured to enable virtual 3D dental modeling and is capable of creating or optionally retrieving a virtual dental model comprising the jaw structure of the patient.
  • the dental implants are already attached to the patient jaw structure, also their respective position may be comprised in the virtual model.
  • the virtual dental model may be acquired using a photo scanner as mentioned above or in any other known technique 3D scanning. By 3D scanning is meant acquiring a set of 2D images followed by performing image analysis to be able to create a 3D model.
  • the graphical user interface is configured to create a 3D dental model of a set of acquired 2D dental images.
  • the user is able to virtually attach bore angle screws, distance members, bore angle connectors to each of the dental implants comprised in the virtual dental model.
  • the user may interactively change each of the bore angles of each dental implant in a suitable way, e.g. by using a pointing device, such as a mouse or keyboard. This may optionally be performed in each of three perpendicular planes or in a visualized 3D model directly.
  • the graphical user interface comprises Computer Aided Design (CAD) or Computer Aided Manufacturing (CAM) software to facilitate modification of the virtual dental model and for manufacturing of the final, finalized virtual dental model.
  • the bore angles may be defined statically using the keyboard by setting the desired degree values using any suitable coordinate system, such as Cartesian coordinates, polar coordinates, etc.
  • the graphical user interface is configured to generate a virtual superstructure based on the user-defined components, such as bore angles, of the dental implant. Thus, during generation of the superstructure parameters such as bore angle, dental implant position, is taken into account by the superstructure generating code segment.
  • a "generate superstructure" button is provided in at least one window of the graphical user interface to generate the superstructure.
  • the virtual superstructure may be provided with a virtual teeth row. This particularly advantageous as it enables the dental surgeon or dental technician to observe the final result virtually and to be able to re-modify the dental model until a perfect fit is achieved.
  • a detailed specification of the virtual superstructure may be printed out.
  • an exact true model of the virtual superstructure may be manufactured. This provides for a cheap and effective way of creating a superstructure to a dental model.
  • a virtual dental system for determining a suitable angle for a dental superstructure with a non- linear screw-channel
  • said system comprising a virtual bore angle member, comprising a head portion, said bore angle member being configured to be mounted on a dental implant, and a virtual bore angle connector having a bottom portion for connection to said head portion of said bore angle member, whereby said bore angle member and said bore angle connector are pivotably connected to each other, wherein said virtual dental system, virtual bore angle member, and virtual bore angle connector are configured to be used in a computerized dental modeling software.
  • this virtual dental system with a virtual distance member, according to above, limiting the freedom of angle between said virtual bore angle member and said virtual bore angle connector.

Landscapes

  • Health & Medical Sciences (AREA)
  • Oral & Maxillofacial Surgery (AREA)
  • Orthopedic Medicine & 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 Prosthetics (AREA)

Abstract

L'invention concerne un système dentaire et des éléments dudit système permettant de déterminer un angle adapté pour une superstructure dentaire (5) doté d'un passage à vis non linéaire. Ledit système comprend un élément à angle d'alésage comportant une partie de tête (41, 61), et un raccord à angle d'alésage (51, 71) comportant une partie de base (52, 72) destinée à se raccorder à ladite partie de tête dudit élément à angle d'alésage, de façon à former un couplage pivotant entre ledit élément à angle d'alésage (10) et ledit raccord à angle d'alésage. Un élément d'écartement (80) est également utilisé.
PCT/SE2007/050784 2006-10-26 2007-10-26 Système dentaire Ceased WO2008051163A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP07835368A EP2076204A4 (fr) 2006-10-26 2007-10-26 Système dentaire
CA002667244A CA2667244A1 (fr) 2006-10-26 2007-10-26 Systeme dentaire

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE0602266 2006-10-26
SE0602266-9 2006-10-26

Publications (1)

Publication Number Publication Date
WO2008051163A1 true WO2008051163A1 (fr) 2008-05-02

Family

ID=39324863

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/SE2007/050784 Ceased WO2008051163A1 (fr) 2006-10-26 2007-10-26 Système dentaire

Country Status (3)

Country Link
EP (1) EP2076204A4 (fr)
CA (1) CA2667244A1 (fr)
WO (1) WO2008051163A1 (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011042583A1 (fr) * 2009-10-08 2011-04-14 Farre Berga, Oriol Complément pour la confection de la structure interne de prothèses dentaires
WO2013004387A1 (fr) * 2011-07-06 2013-01-10 Nobel Biocare Services Ag Canal de vis angulaire
WO2018172261A1 (fr) 2017-03-20 2018-09-27 Straumann Holding Ag Auxiliaire de modélisation en deux parties
WO2018218283A1 (fr) * 2017-06-01 2018-12-06 Smartscrew Pty Ltd Système de fixation
WO2019048723A1 (fr) * 2017-09-08 2019-03-14 Biotechnology Institute, I Mas D, S.L. Procédé de fabrication d'une prothèse dentaire avec un conduit intérieur passant angulaire
EP3606463A4 (fr) * 2017-04-07 2020-12-16 Panthera Dental Inc. Conduit pour vis en forme de goutte pour une superstructure dentaire et son procédé de conception

Citations (4)

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Publication number Priority date Publication date Assignee Title
WO1993009728A1 (fr) * 1991-11-16 1993-05-27 Michael Francis Rosa Joint a rotule destine a un implant pilier dentaire
US5577912A (en) * 1994-09-19 1996-11-26 Prins; Steven P. Adjustable implant fixture
US5947733A (en) * 1995-10-13 1999-09-07 Institut Straumann Ag Connector between an implant and an abutment
EP1621156A1 (fr) * 2004-07-29 2006-02-01 Yechiel Cohen Système d'implant adaptable pour fixer une prothèse dentaire à l'os

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1993009728A1 (fr) * 1991-11-16 1993-05-27 Michael Francis Rosa Joint a rotule destine a un implant pilier dentaire
US5577912A (en) * 1994-09-19 1996-11-26 Prins; Steven P. Adjustable implant fixture
US5947733A (en) * 1995-10-13 1999-09-07 Institut Straumann Ag Connector between an implant and an abutment
EP1621156A1 (fr) * 2004-07-29 2006-02-01 Yechiel Cohen Système d'implant adaptable pour fixer une prothèse dentaire à l'os

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Title
See also references of EP2076204A4 *

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011042583A1 (fr) * 2009-10-08 2011-04-14 Farre Berga, Oriol Complément pour la confection de la structure interne de prothèses dentaires
WO2013004387A1 (fr) * 2011-07-06 2013-01-10 Nobel Biocare Services Ag Canal de vis angulaire
WO2018172261A1 (fr) 2017-03-20 2018-09-27 Straumann Holding Ag Auxiliaire de modélisation en deux parties
US11484394B2 (en) 2017-03-20 2022-11-01 Straumann Holding Ag Two-part modelling aid
EP3606463A4 (fr) * 2017-04-07 2020-12-16 Panthera Dental Inc. Conduit pour vis en forme de goutte pour une superstructure dentaire et son procédé de conception
WO2018218283A1 (fr) * 2017-06-01 2018-12-06 Smartscrew Pty Ltd Système de fixation
US20190038418A1 (en) * 2017-06-01 2019-02-07 Smartscrew Pty Ltd Fastening System
WO2019048723A1 (fr) * 2017-09-08 2019-03-14 Biotechnology Institute, I Mas D, S.L. Procédé de fabrication d'une prothèse dentaire avec un conduit intérieur passant angulaire
JP2020533085A (ja) * 2017-09-08 2020-11-19 バイオテクノロジー インスティチュート、アイ エムエーエス ディー、 エス．エル． 角度付き貫通内腔を有する歯科補綴物の製造方法
EP3679886B1 (fr) 2017-09-08 2021-08-04 Biotechnology Institute, I MAS D, S.L. Procédé de fabrication d'une prothèse dentaire avec un conduit intérieur passant angulaire
JP7025790B2 (ja) 2017-09-08 2022-02-25 バイオテクノロジー インスティチュート、アイ エムエーエス ディー、 エス．エル． 角度付き貫通内腔を有する歯科補綴物の製造方法
RU2766797C2 (ru) * 2017-09-08 2022-03-15 Байотекнолоджи Инститьют, И Мас Д, С.Л. Способ изготовления зубного протеза, имеющего расположенный под углом внутренний сквозной канал

Also Published As

Publication number Publication date
CA2667244A1 (fr) 2008-05-02
EP2076204A4 (fr) 2009-11-25
EP2076204A1 (fr) 2009-07-08

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