WO2010100163A2 - Superstructure pour un système de prothèse dentaire et procédé de fabrication correspondant - Google Patents

Superstructure pour un système de prothèse dentaire et procédé de fabrication correspondant Download PDF

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Publication number
WO2010100163A2
WO2010100163A2 PCT/EP2010/052640 EP2010052640W WO2010100163A2 WO 2010100163 A2 WO2010100163 A2 WO 2010100163A2 EP 2010052640 W EP2010052640 W EP 2010052640W WO 2010100163 A2 WO2010100163 A2 WO 2010100163A2
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WO
WIPO (PCT)
Prior art keywords
elements
sleeve
implants
calcinable
tubular
Prior art date
Application number
PCT/EP2010/052640
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English (en)
Other versions
WO2010100163A3 (fr
Inventor
Tiziano Tealdo
Marco Bevilacqua
Paolo Pera
Luca Scaglione
Original Assignee
Tiziano Tealdo
Marco Bevilacqua
Paolo Pera
Luca Scaglione
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 Tiziano Tealdo, Marco Bevilacqua, Paolo Pera, Luca Scaglione filed Critical Tiziano Tealdo
Publication of WO2010100163A2 publication Critical patent/WO2010100163A2/fr
Publication of WO2010100163A3 publication Critical patent/WO2010100163A3/fr

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Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • 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
    • A61C8/00—Means to be fixed to the jaw-bone for consolidating natural teeth or for fixing dental prostheses thereon; Dental implants; Implanting tools
    • A61C8/0001—Impression means for implants, e.g. impression coping
    • 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
    • A61C8/008—Healing caps or the like

Definitions

  • the present invention concerns a superstructure intended to be included in a dental prosthesis system applicable to the maxilla or mandible of a patient, anchoring it to a plurality of implants previously applied to the maxillary or mandibular bone of the patient. More specifically, the invention refers to a superstructure which is anchored to the implants shortly after application of the latter in the maxillary or mandibular bone of the patient, for example the same day or, in any case, within a time-span of between 24 and 36 hours.
  • the invention furthermore concerns a method for the fabrication of said superstructure and components designed for implementation of the method and/or which form part of the superstructure itself.
  • the immediate loading protocols have the undoubted advantage for the patient of significantly reduced treatment times and rapid restoration of functionality and aesthetics, without the inconvenience of remaining for long periods with tooth gaps and without the need to use temporary removable prostheses which can be removed by the patient during the day.
  • a further advantage lies in the fact that concentrating the surgical and prosthetic phases in a short space of time allows the dental team to offer treatment at reduced costs for the patient .
  • the benefits for the patient are not limited to reduction of the treatment times, but are also important psychologically, since the perception of a prosthesis fixed on implants, even if intended to be a provisional one, is functionally and physically very similar to that of the natural teeth.
  • immediate loading protocols eliminate in the patient the sensation of physical impairment which accompanies the prolonged condition of edentulism and the need to use temporary removable prostheses, and they facilitate rapid social rehabilitation.
  • the very act of anchoring the prosthetic bridge to the implants can produce "static" mechanical tensions on the bone structure, which are then cyclically amplified when the effect of the masticatory load is combined with them.
  • implant micro- movements greater than 50-100 ⁇ m are considered to entail a high probability of compromising the osteointegration .
  • the resulting surgical and prosthetic indications cannot be directly applied to cases of maxillary edentulism.
  • the maxillary bone has very different characteristics, in particular it is much less hard and has a spongier structure.
  • the maxillary bone is decidedly more heterogeneous in statistical terms.
  • the physiological conformation of the bone entails geometrical constraints and limitations to the possibility of insertion of long implants (in the order of 13-18 mm) , given the presence of the nasal cavity and maxillary sinuses.
  • the inclination of the emerging portion of the implants thus inserted must be "corrected” in order to be made compatible with the fixing of a prosthetic bridge.
  • pre-angled abutments are generally fixed to provide seats for fastening elements (for example, screws) which connect the prosthetic bridge to the implants .
  • WO97/34543 discloses a method for the implantation of fixed dental prostheses, starting from a master model which reproduces the jawbone of a patient, including "replicas” which match with the posts of the implants incorporated into the jawbone, wherein on said "replicas” are arranged titanium columns which are joined by means of titanium bridges fixed by laser welding to said columns, thereby forming a frame which can be used as a base for the construction and anchoring of the prosthesis.
  • the accuracy of the alignment obtained always needs to be verified, either with reference to the "replicas" in the master model or directly with reference to the real implants in the mouth of the patient and any misalignment or improper coupling is to be corrected by cutting the frame obtained according to the method disclosed and subsequently joining back again its sub-parts by soldering them to one another in the correct reciprocal position.
  • the object of the present invention is therefore to provide a superstructure of a dental prosthesis for use in an immediate loading protocol for the functional/aesthetic rehabilitation of an edentulous upper jaw, the use of which favours osteointegration of the implants and minimises the occurrence of mechanical and physiological complications.
  • a further object of the present invention is to provide a method for the production of a superstructure of a dental prosthesis which maximises the coupling passivity between the main structure of the dental prosthesis and the fastening elements .
  • said objects are achieved by providing method for fabrication of a superstructure intended to be included in a dental prosthesis system for a maxillary or mandibular bone as claimed in claim 1, and a superstructure obtainable therefrom.
  • the present invention furthermore, provides components especially conceived for use in the method of claim 1, or in connection therewith, as defined by claims 6, 9, 12 and 16.
  • figure 1 is a frontal view of a human face, in which the implant insertion positions are qualitatively highlighted;
  • figure 2 is a schematic representation in section of a detail of the superstructure for a dental prosthesis system according to the invention;
  • FIG. 3 is a perspective view of a template for insertion of the implants
  • FIG. 4 is a perspective view of a detail of the model of the maxilla comprising the implants, in a first phase of the method according to the invention
  • - figure 5 is a perspective view of the model of Figure 4, in a second phase of the method according to the invention
  • - figure 6 is a perspective view of a mould for production of the main metal structure of the dental prosthesis (lost-wax casting technique) ;
  • FIG. 7 is a perspective view of the semi-finished product from which the main structure of the dental prosthesis is obtained, in an intermediate phase of the fabrication method of the invention
  • FIG. 8 is a perspective view of a perforated portion of the semi-finished product of figure 7;
  • FIG. 9 is a perspective view of a first tubular element used in the fabrication method according to the invention.
  • FIG. 10 is a perspective view of a second tubular element used in the fabrication method according to the invention.
  • - figure 11 is a perspective view of a sleeve element forming part of the superstructure of the invention
  • - figure 12 is a perspective view of the dental prosthesis in a further intermediate phase of the method
  • FIG. 13a is a perspective view of the emerging portion of an implant with a relative fastening element
  • FIG. 13b is a perspective view of a protecting device according to the invention.
  • figure 14 is a perspective view of a bite according to the invention
  • figure 15 is a perspective view of a coping component according to the invention.
  • the number 1 indicates overall a full dental prosthesis system for an edentulous maxillary or mandibular bone.
  • the dental prosthesis system 1 is intended for use in the context of an immediate functional loading protocol in the rehabilitation of an edentulous upper maxi l l a .
  • the system 1 includes a dental prosthesis 10, comprising a main structure 11, preferably made of metal, and a portion of an artificial denture 12.
  • the dental prosthesis 10 can be of the provisional type.
  • the dental prosthesis 10 can be applied to the implants within 24-36 hours from their insertion in the maxillary bone of the patient, and can subsequently be removed
  • the implants 13 are inserted in the maxillary bone with a significant inclination with respect to the vertical (for the reasons described previously) , they can be removably coupled with fastening elements 14 which comprise engaging portions 15 projecting from the gum tissue 16 and oriented in space along respective coupling axes which are, in general, reciprocally skew (disparallelism) .
  • each of said pre-angled abutment elements comprises a frustoconical engaging portion 15 which protrudes from a base portion 17 identifying a circular crown surface 18.
  • the larger section of each engaging portion 15 is near to the corresponding implant 13.
  • the main structure 11 has holes 19 directed parallel to the coupling axes of the engaging portions 15 and suitable for receiving the latter, upon anchoring of the dental prosthesis 10 to the implants 13.
  • the base portion 17 of each of the fastening elements 14 can, upon anchoring of the prosthesis 10, be coupled in line with the corresponding implant 13, to which it can be fixed by means of a releasable constraint means, for example a threaded screw 20, which extends during use into a first through hole 21.
  • each of the fastening elements 14 is, on the other hand, upon anchoring of the prosthesis 10, in line with the corresponding hole 19 of the main structure 11.
  • the engaging portion 15 furthermore has a second through hole 22 directed along the coupling axis.
  • the main structure 12 is formed of perforated portions 23, each corresponding to an engaging portion 15, and transversal portions 24 which interconnect proximal perforated portions two by two .
  • a sleeve element 25 can be coupled having a head portion 26 and presenting a frustoconical cavity 28 suitable for coupling with clearance with the engaging portion 15. Said sleeve element 25 is cemented in the corresponding hole 19 with the head portion 26 resting on the circular crown surface 18 of the corresponding fastening element 14.
  • the dental prosthesis of the invention will be used preferably in an immediate functional loading protocol for the functional and aesthetic rehabilitation of an edentulous maxilla.
  • the surgical phase of the protocol provides, preferably, for insertion of the implants by sub-preparing the implant sites, using drill kits available on the market.
  • dense bone such as that of the mandible
  • the last drill used is normally a 3 mm diameter drill
  • the maxilla where the bone is not as hard
  • a 2 mm diameter drill may be sufficient.
  • the sub-preparation can involve not only the diameter but also the length of the implant insertion site .
  • implants of at least 13 mm are the most suitable for achieving the mechanical and physiological objectives of the protocol.
  • the implants are not inserted according to the principles of Branemark, but inclined at an angle with respect to the vertical which can be up to 45°, in order to avoid the anatomical limitations (maxillary sinus and inferior alveolar nerve) which do not allow the use of long implants at premolar or molar sites.
  • These implants can have a mesiodistal or distomesial inclination on the sagittal plane.
  • Mesiodistal implants in the upper jaw are called pterygoid or "zygomatic implants" (Zygoma Fixture®) . They are longer than the traditional implants (up to 5.25 cm long) . They are inserted very inclined in order to be stabilised in the pterygoid process of the maxilla.
  • the implant angle can be corrected by means of pre-angled abutment elements, but the prosthetic emergence is always palatal with respect to the ideal position of the tooth.
  • the surgical phases are complex and not without risk. Performance of the osteotomy for insertion of the implant involves working near very delicate anatomical areas, such as the floor of the orbit and the arterial-venous and nervous system connected to it.
  • the protocol described here is applied, in particular, in the case of a maxilla which becomes edentulous due to extraction of the remaining teeth, which are badly compromised in functional and/or aesthetic terms.
  • extraction of the remaining teeth deprives the dentist of reference points for insertion of the implants for which, as said previously, preferential insertion sites have been identified at the level of the canine teeth and premolars/first molar.
  • a template can be used produced on the basis of pre-extraction anatomical information (obtained, for example, by means of a cast before proceeding with extraction of the remaining teeth), which provides the dentist with a guide for insertion of the implants (surgical phase) and the dental technician with indications of the volume dimensions of the prosthesis to be produced (prosthetic phase) .
  • Surgical guides attached by screws to the maxilla to be treated are known in the art, with consequent complications at procedural level.
  • the template 50 provided is advantageously made so that it can be removably housed in the oral cavity of the patient by resting firmly on the mandibular arch, which constitutes the antagonist jaw to the one being treated. Therefore, the lower portion 51 of the template reproduces, in negative, the conformation of the mandibular arch.
  • the upper portion 52 can be coupled to the palatal wall and can engage in a stable manner with it, and reproduces the gum line of the complete upper arch dentition of the patient.
  • the operator can therefore introduce the template 50 into the oral cavity and extract it from the same repeatedly, without having to screw/unscrew fastening elements, thereby significantly simplifying the procedure and reducing surgical times.
  • the template 50 induces a partial opening of the mouth which allows the operator to visually check the correct insertion of an implant or screw-fitting of the pre-angled abutment element mounted on the implant.
  • the upper portion of the template 50 furthermore, advantageously provides the dentist and dental technician with information relative to the space that will be occupied by the prosthesis once anchored to the maxilla and, consequently, indications for the sizing and choice of the components to be used for fabrication of the prosthesis.
  • the pre-angled abutment elements 14 (fastening elements) are provisionally screwed onto them.
  • the implants inserted according to the surgical protocol described here are highly disparallel to one another.
  • the angle of the engaging portion 15 of the fastening elements 14 with respect to the axis of the implants 13 inserted in the maxillary bone facilitates anchoring of the dental prosthesis to the same.
  • fastening elements such as the multi unit abutments by Nobel Biocare, or pre-angle conical abutments by 3i, Implant Innovation.
  • “hybrid” elements can be used which comprise a conical portion with reduced overall dimensions combined with an antirotational device, present also in the pre-angled conical abutment, so that pieces mounted subsequently on the fastening elements cannot rotate.
  • the dental prosthesis is fabricated referring to a model that replicates the maxilla of the patient in which the implants have been inserted.
  • the impression is produced using gypsum-based material, for example V BF Plaster by Dental Torino.
  • a gypsum-based material is preferable to silicones and polyesters, due to its characteristics of rigidity and limited volumetric expansion during the setting phase. Furthermore, the use of a gypsum-based material ensures low cost and rapid production of the impression.
  • the copings generally used in the art have the drawback that they do not stand sufficiently still in the impression material as it is cast and set and, even more so, when the impression is removed from the mouth of the patient. As a consequence, the impression obtained is not a perfect copy of the mouth of the patient and this may further complicate the achievement of a correct alignment and of actual passive coupling conditions.
  • FIG 15 illustrates the coping component 200 of the invention.
  • the coping component 200 has a substantially tubular shape, comprises a bottom end 201 adapted to engage with the emerging portion of an implant 13 or with a relative fastening element 14 (see Figure 13A) , and a body 202 adapted to support an impression material.
  • the body 202 comprises a top portion 203, and a bottom portion 204 having an external diameter greater than the diameter of the top portion 203, a substantially annular surface 205 being thereby defined at a top end of the bottom portion 204.
  • At least one, but preferably two or more longitudinal recesses 206 are arrayed, equally spaced about the longitudinal axis of coping component 200, around the bottom portion 204, extending from the bottom end 201 through to the surface 205.
  • the recesses have a substantially triangular transverse-sectional shape, yet other shapes, such as rectangular or semi-circular may also be used in a coping component according to the invention.
  • the coping component 200 has a through passage 207 extending from the bottom end 201 to the end of the top portion 203.
  • the through passage 207 is at least partially threaded so as to be releasably fixed to the emerging portion of an implant 13 or with a relative fastening element 14 by means of a coping screw (not shown) .
  • the coping screw is adapted to be screwed in/out with both a plain head for slotted screws as well as with an Allen key.
  • coping components 200 having top portion 203 of different lengths may be designed, so as to account for local variations in the thickness of the gums and/or in the distance between the maxillary and the mandibular bones.
  • a model of the maxilla is made from the impression obtained as above. Furthermore, the position of the mandible (movable bone) with respect to the maxilla (static bone) on the vertical and horizontal plane is determined.
  • a wax of the type available on the market (for example Moyco extra hard wax) , and devices that can be screwed onto the fastening elements 13 are used.
  • the prosthetic protocol does not entail any further involvement of the patient for the acquisition of anatomic-geometric information.
  • the above objects are achieved by providing a protecting device as defined in claim 11 and a "bite" as defined in claim 15, which are designed to perform the dual function of protecting the implants that have just been inserted and limiting, at the same time, the inconvenience associated with intraoral perception thereof (it avoids, among other things, contact between the tongue and the emerging portion of the fastening elements 14) .
  • Said post-surgical bite 300 is produced by embedding the fastening elements 14 (see Figure 13a) in a band 301 of silicone and fixing the band 301 to said fastening elements 14 by means of protecting devices 302 .
  • Each protecting device 302 comprises a shaft 303 and a head 304, the shaft 303 having a bottom end 305 which is adapted to be releasably fixed, e.g. screwed, either directly to the emerging portion of an implant 13 or to a fastening element 14, which in turn engages with the emerging portion of the implant 13.
  • the head 304 is substantially cap-shaped.
  • one or more longitudinal recesses 306 are arrayed, equally spaced about the longitudinal axis of the protecting device 302, around the head 304, extending throughout the head 304 itself.
  • the shaft 303 comprises, between the bottom end 305 and the head 304 a mid-section having diameter lesser than the maximum diameter of the head 304 and lesser than the diameter of the shaft 303 at its bottom end 305.
  • the protecting devices 302 are fastened to either the emerging portions of the implants 13 or to respective fastening elements 14 and embedded in a band 301 of silicone (see Figure 14) .
  • the use of transparent silicone is preferable, because the subsequent removal of fastening screws is made easier, since they remain visible through the layer of silicone itself.
  • any other material which solidifies/vulcanise whilst remaining soft to the tongue and atraumatic for the patient also may be conveniently used.
  • the recessed structure of the shaft 303 described above advantageously ensures a satisfactory retention of the silicone during the manufacture of the bite.
  • the construction of the dental prosthesis (especially a provisional prosthesis, but the method described here can be used also for production of the final prosthesis to be applied once osteointegration is complete) is based on a model 30 (see Figure 4) of the maxilla and the emerging portion of the implants applied to it produced on the basis of the impression acquired previously.
  • Said model reproduces the real morphology of the patient's mouth at the end of the surgical phase.
  • fastening elements 14' are mounted on the model identical to the fastening elements 14 mounted on the implants 13 inserted in the maxilla of the patient, in the same position and with the same spatial inclination .
  • a first tubular element 31 is fitted, which constitutes a position reference for the subsequent work phases.
  • Corresponding tubular elements 32 are inserted, coupled with radial clearance, on said sleeve elements 25.
  • the tubular element 31, is preferably shaped (see Figure 9) so that it can fit on a sleeve element 25.
  • the tubular element 31 is preferably shaped such that the contour of its inner surface closely matches the contour the outer surface of the sleeve element 25. Therefore, when the tubular element 31 is fitted upon a relative sleeve element 25, they are necessarily oriented substantially coaxial to one another.
  • tubular elements 32 having the same design are inserted on all sleeve elements 25 screw-fastened to respective fastening elements 14', the tubular elements 32 only loosely coupling with the respective sleeve elements 25.
  • the tubular elements 31, 32 are made of calcinable plastic.
  • the sleeve elements 25 have (see Figure 11) at least one outer radial groove 25a suitable for engaging with a corresponding inner radial fin 32a of the tubular elements 32 (see Figure 10) .
  • two or more radial fins 32a are present on the tubular element 32, they are equally spaced on the periphery of the tubular element 32 about a longitudinal axis thereof.
  • the two or more radial grooves 25a on the sleeve element 25 shall be present in the same number and shall be spaced on the periphery of the sleeve element 25 about a longitudinal axis thereof so as to correspond to respective fins 32a on the tubular element 32 with which they are meant to engage in use.
  • tubular elements 32 cannot rotate around the sleeve elements 25 and a circumferential air space is defined between each tubular element 32 and the corresponding sleeve element 25.
  • the definition of said air space is advantageous, as shall be explained in greater detail, in the final steps of the fabrication of the prosthesis.
  • tubular elements 31 and 32 are then interconnected (see Figure 5) by transversal portions 33 of a calcinable material.
  • a calcinable intermediate 34 is obtained, which can be used (see Figure 6) in a known lost-wax casting procedure.
  • the surface of the transversal portions 33 is preferably made rougher by the application of particles 35, also made of calcinable material.
  • Figure 6 illustrates the calcinable intermediate 34 inserted in a mould 36 and sustained by supporting elements 37 also made of calcinable material which, during the lost-wax casting process, allow casting of the molten metal and, at the end of the post-casting cooling phase, are transformed into metallic portions which must be removed to obtain a semi-finished product 38 (Figure I) 1 which constitutes the exact replica of the intermediate 34 in a metal material.
  • the lost-wax casting process "transforms" the calcinable intermediate 35 into the semi-finished product 38.
  • the tubular elements 31 and 32 come to define perforated portions 39, and the transversal portions 33 made of calcinable material come to constitute metal transversal portions 24.
  • the semi-finished product 38 thus obtained undergoes a further work process so that it can be passively coupled with the fastening elements 13.
  • the portion bearing the masticatory units is formed, according to techniques known in the dental technology sector, around the supporting structure 11 (obtaining a structure 60 of the type shown in Figure 12) .
  • the fins that extend radially from the inner walls of the holes of the semi-finished product, and which correspond to the radial fins of the tubular elements 32, are removed, for example by means of a milling operation.
  • a sleeve element 25 is cemented via a "differentiated" gluing procedure.
  • sleeve elements 25 are cemented at a time in the corresponding holes 19, positioned with their respective head portions 18 resting on respective circular crown surfaces 16 of the fastening elements 14 ' .
  • the surfaces of the sleeve elements 25 are preferably treated according to techniques aimed at obtaining an optimal degree of roughness, such as sandblasting.
  • the sandblasting is performed with particles of aluminium dioxide, with diameter between 100 and 150 microns.
  • the method of the invention allows the most critical work stage for obtaining the passive coupling of prosthesis and implants at the end of the procedure, i.e. the cementation, to be performed when the prosthesis is geometrically and dimensionally stable.
  • the air space between the walls of the holes 19 and sleeve elements 25 is advantageously obtained, and preserved during the work process, facilitating and calibrating the cementation operation.
  • the cementation sequence uses the position reference identified by the hole resulting from transformation of the tubular element 31 to cement the last sleeve element 25 in said site.
  • the method of the invention thus allows maximisation of the mechanical coupling precision between the surfaces involved and therefore the desired passivity.
  • the formation of the prosthesis can therefore be completed on the structure 60 with the sleeve elements 25 cemented as described according to the techniques known in the sector (for example simulating the gum tissue to optimise the aesthetic impact, etc) .
  • a dental prosthesis 10 is thus obtained ready for application to the implants 13 inserted in the maxillary bone of the patient, completing the prosthetic phase of the protocol for rehabilitation of the functionality and aesthetics of an edentulous maxilla and simultaneously initiating the process of osteointegration with functional load.

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  • 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)
  • Prostheses (AREA)

Abstract

L'invention concerne une superstructure d'un système de prothèse dentaire complet pour os maxillaire. La superstructure comprend une prothèse dentaire, une structure principale de la prothèse et des éléments de fixation pouvant être accouplés aux implants fixés sur l'os maxillaire, en définissant des parties d'insertion respectives dans des trous correspondants de la structure principale, chacun muni d'une surface de couronne circulaire respective s'étendant autour de la partie d'insertion correspondante dans un plan transversal à l'axe d'accouplement correspondant. La superstructure comprend en outre des éléments manchons pouvant être accouplés avec un jeu radial aux trous de la structure principale et aux parties d'insertion et comprenant une partie tête. Chaque élément manchon est cimenté à l'intérieur d'un des trous, sa partie tête reposant sur ladite surface de couronne circulaire correspondante.
PCT/EP2010/052640 2009-03-03 2010-03-02 Superstructure pour un système de prothèse dentaire et procédé de fabrication correspondant WO2010100163A2 (fr)

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ITTO2009A000158 2009-03-03
ITTO2009A000158A IT1396754B1 (it) 2009-03-03 2009-03-03 Sovrastruttura per un sistema di protesi dentale mascellare completa e relativo metodo di fabbricazione

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WO2010100163A2 true WO2010100163A2 (fr) 2010-09-10
WO2010100163A3 WO2010100163A3 (fr) 2010-11-04

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT201700039742A1 (it) * 2017-04-11 2018-10-11 Univ Degli Studi Genova Protesi dentale fissa perfezionata e suo metodo di fabbricazione

Citations (1)

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Publication number Priority date Publication date Assignee Title
WO1997034543A1 (fr) 1996-03-15 1997-09-25 Centro De Investigacion Y Desarrollo Del Titanio En Implantologia Oral, Sociedad Limitada Systeme d'implantation de protheses dentaires fixes

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US4575340A (en) * 1985-02-04 1986-03-11 Lustig Leopold P Precision dental restorative system
IT1260239B (it) * 1992-12-22 1996-04-02 Metodo per la realizzazione di protesi da implantologia e dispositivo per l'attuazione di tale metodo
IL113726A (en) * 1994-06-03 1998-04-05 Straumann Inst Ag A device for the production of dentures and a method for its production
JPH10108871A (ja) * 1996-08-09 1998-04-28 Gc:Kk 角度付き歯科用インプラント
IT1314729B1 (it) * 2000-05-10 2003-01-03 Physioplant S R L Dispositivo protesico per impianti dentali intraossei
SE517011C2 (sv) * 2000-12-29 2002-04-02 Nobel Biocare Ab Anordning för hålupptagning och hylsisättning i enhet som ingår i dental uppbyggnadsdel
GB0213774D0 (en) * 2002-06-15 2002-07-24 Osseobiotek Ltd Prosthesis
US20070099152A1 (en) * 2005-10-31 2007-05-03 Albert Busch Dental implant system

Patent Citations (1)

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Publication number Priority date Publication date Assignee Title
WO1997034543A1 (fr) 1996-03-15 1997-09-25 Centro De Investigacion Y Desarrollo Del Titanio En Implantologia Oral, Sociedad Limitada Systeme d'implantation de protheses dentaires fixes

Non-Patent Citations (1)

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Title
CLINICAL IMPLANT DENTISTRY AND RELATED RESEARCH, vol. 1, no. 1, 1999

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT201700039742A1 (it) * 2017-04-11 2018-10-11 Univ Degli Studi Genova Protesi dentale fissa perfezionata e suo metodo di fabbricazione

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WO2010100163A3 (fr) 2010-11-04
ITTO20090158A1 (it) 2010-09-04
IT1396754B1 (it) 2012-12-14

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