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WO2012076546A1 - Appareil modulaire pour réalisation de structures de raccordement pour prothèses dentaires mobiles - Google Patents

Appareil modulaire pour réalisation de structures de raccordement pour prothèses dentaires mobiles Download PDF

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Publication number
WO2012076546A1
WO2012076546A1 PCT/EP2011/071962 EP2011071962W WO2012076546A1 WO 2012076546 A1 WO2012076546 A1 WO 2012076546A1 EP 2011071962 W EP2011071962 W EP 2011071962W WO 2012076546 A1 WO2012076546 A1 WO 2012076546A1
Authority
WO
WIPO (PCT)
Prior art keywords
frame
longitudinal sections
annular groove
sections
center distance
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/EP2011/071962
Other languages
English (en)
Inventor
Roberto Pancaldi
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.)
DENTAL BIOENGINEERING Srl
Original Assignee
DENTAL BIOENGINEERING Srl
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by DENTAL BIOENGINEERING Srl filed Critical DENTAL BIOENGINEERING Srl
Publication of WO2012076546A1 publication Critical patent/WO2012076546A1/fr
Anticipated expiration legal-status Critical
Ceased 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
    • 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

Definitions

  • the present patent application for industrial invention relates to a modular apparatus used to fix mobile dental prostheses.
  • “Overdenture” refers to a system composed of a removable prosthesis that can be firmly fixed to the user's jaw bone or jaw by means of two more cooperating "male-female” connections.
  • the male part is surgically implanted into the patient's bone, whereas the female part is incorporated into the prosthesis.
  • connection implanted into the patient is generally formed of two or more pins (or screws) with vertical axis that are suitably spaced and fixed in the jaw bone or jaw in such manner that the upper ends protrude shortly from the mucosa.
  • said protruding ends of the screws are connected by means of a metal bar, suitable shaped to follow the curvature of the dental arch, and therefore adapted to protrude shortly from the mucosa.
  • the female connection incorporated in the removable prosthesis must be provided with a seat compatible with dimensions and profile of said bar protruding from the mucosa (or of any pins or screws).
  • the protruding ends of the screws implanted into the patient are provided with corresponding spheres that are adapted to become the connection points of the removable prosthesis.
  • Said spheres are adapted to cooperate with corresponding covers incorporated at the base of the prosthesis in positions exactly corresponding to the ones occupied by the spheres in the patient's bone.
  • said covers are adapted to be firmly "snap-fitted" with the spheres, when the prosthesis is energetically engaged against the patient's mucosa.
  • the fixing covers provided in a removable prosthesis must be connected by a metal structure, which is likewise incorporated into the prosthesis, and adapted to increase the mechanical resistance of the latter.
  • the first part of such a structure is a metal profile inserted at the base of the prosthesis, which is shaped in such manner to follow the curvature of the latter in longitudinal direction.
  • Such a longitudinal metal profile is provided with one or more pins that cross the thickness of the prosthesis almost completely, reaching immediately under the point where false teeth are joined.
  • the metal profile is also the fixing point of said Teflon covers adapted to provide connection of the entire prosthesis on the spheres protruding from the user's jaw bone or jaw.
  • the dental technician can use moldable wax to exactly determine the shape and dimensions of the future metal part of the prosthesis.
  • the wax model is used to create a mold where fluid metal is cast.
  • connection adapted to be incorporated in a removable prosthesis.
  • the apparatus of the invention can be used to provide a connection for removable prostheses of the type adapted to cooperate with spheres protruding from the patient's mucosa.
  • the present invention intends to eliminate the traditional operations that considerably impair the work of the dental technician, i.e. realization of wax model, realization of mold and execution of metal casting.
  • the apparatus of the invention in fact, is formed of modules that are directly made of metal, which can be rapidly assembled by the dental technician in order to realize a connection ready to be exactly incorporated into the prosthesis and perfectly compliant with the requirements of precise coupling with the sphere-type connection implanted into the patient.
  • Another advantage of the modular apparatus of the present invention is that it allows the dental technician to give each connection a profile that exactly reproduces the normally curvilinear profile of the prosthesis.
  • - figures 1 A, 1 B and 1 C respectively consist in an axonometric view, a plan view and a side view of the first part of the apparatus according to the present invention
  • FIGS. 2A, 2B, 2C and 2D are an axonometric view and three different views of the second part of the apparatus of the invention.
  • FIGS. 3A, 3B, 3C and 3D are an axonometric view and three different views of the third part of the apparatus of the invention.
  • FIGS. 4A, 4B, 4C and 4D are an axonometric view and three different views of the fourth part of the apparatus of the invention.
  • FIGS. 5A and 5B are two axonometric views showing the cooperation modes of said parts of the apparatus of the invention.
  • the modular apparatus of the invention is composed of the following modules, which can be used from time to time in the most suitable number of specimens.
  • the first of said modules consists in an elongated narrow metal frame (1 ) and also provided with a central window (F) for its entire length, as shown in figs. 1 A to 1 C.
  • the second module of the apparatus of the invention consists in a cover (2) of the type that can be fixed to the spheres adopted in the connections implanted into the patient.
  • the peculiarity of said cover (2) is that it is provided, towards the top, with an annular groove (2a) that is bordered in lower position by the upper flat border (2b) of the cover (2) and in upper position by an eccentric head (2c), as shown in figs. 2A to 2D.
  • the third module of the apparatus of the invention consists in a pin (3) formed of a truncated-pyramidal stem (3a) provided towards the bottom with an annular groove (3b) comprised between an upper circular flange (3c) and a lower eccentric head (3d), as shown in figs. 3A to 3D.
  • the fourth module of the apparatus of the invention is basically identical to said third module, with the only difference that the upper truncated-pyramidal stem (4a) of said pin (4) is inclined with respect to the lower section of the same, the one housing the annular groove (4b) and determined by the corresponding circular flange (4c) and eccentric head (4d), as shown in figs. 4A to 4B.
  • the eccentric head (2c) provided on top of the cover (2) has the same shape and dimensions as the eccentric heads (3d, 4d) provided on the bottom of said pins (3, 4), and the annular groove (2a) of the cover (2) has the same shape and dimensions as the grooves (3b, 4b) provided on the pins (3, 4).
  • said eccentric heads (2c, 3d, 4d) have higher length and lower width than the center distance between said two longitudinal sections (1 a) of the frame (1 ) and said grooves (2a, 3b, 4b) have suitable height to allow for insertion of at least one of said longitudinal (1 a) or semicircular (1 b) sections of the frame (1 ).
  • each groove (2a, 3b, 4b) must be equal to or multiple of the thickness of said frame (1 ).
  • the upper border (2b) of the cover (2) and the circular flange (3c, 4c) of the pins (3, 4) have identical circumference and higher diameter than the center distance between the longitudinal sections (1 a) of the frame (1 ).
  • Fig. 5A shows a possible assembly of said modules, which provides, in particular, for cooperation of two specimens, with different length, of said first module (1 ), one specimen of said second module (2) and two specimens of said third module (3).
  • Fig. 5B is the same as Fig. 5A, with the only difference that it shows a structure with two specimens of said fourth module (4).
  • said cover (2) is combined with two adjacent specimens of the frame (1 ), also acting as connection means, and said cover (2) is already connected to a pin (P) of the type implanted in the patient's bone.
  • said cover (2) must be inserted, from below upwards, through the two overlapped curved sections (1 b) of the adjacent frames (1 ); in such manner that the cover (2) simultaneously crosses the central windows (F) of the latter.
  • said eccentric head (2c) provided on top of said cover (2) has higher length than the center distance between said two longitudinal sections (1 a) of the frame (1 ), but lower width than said center distance.
  • the cover (2) can be inserted into the frame (1 ) only if the eccentric head (2c) is in such a position that its longitudinal axis is aligned with the longitudinal axis of the frame (1 ).
  • the eccentric head (2c) can be brought at a higher height than the two overlapped frames (1 ), until the point in which said semicircular sections (1 b) of the latter are engaged from opposite sides into the annular groove (2a) of the cover (2).
  • the installer must simply rotate the cover (2) by 90° so that the eccentric head (2c) is in orthogonal position with respect to the two frames (1 ).
  • the cover (2) is firmly fixed between the two frames (1 ); in fact, its downward extraction would be prevented by the interference exerted by said eccentric head (2c) against the upper side of the first of the two overlapped frames, and likewise its upward extraction would be prevented by the interference exerted by said upper border (2b) of the cover (2) against the lower side of the second of said frames (1 ).
  • Another operation that must be carried out by the installer refers to the insertion of two specimens of pins (3) inside said two frames (1 ) already joined by said cover (2).
  • the two pins (3) are engaged in correspondence of the semicircular sections (1 b) of the two adjacent frames (1 ), i.e. in correspondence of the ones that are not yet engaged in the groove (2a) of said cover (2).
  • eccentric head (3d) provided on the bottom of said pins (3) must be inserted through the central window (F), in such a position that its longitudinal axis is aligned with the longitudinal axis of the frame (1 ).
  • the eccentric head (3d) can pass through the frame (1 ) until the flange (3c) provided under the truncated-pyramidal stem (3a) of the pin (3) does not interfere with the upper side of the frame (1 ), basically at the height of the corresponding semicircular section (1 b).
  • the metal structure shown in Figs. 5A and 5B can be manually shaped by the dental technician, by adjusting the mutual inclination of the two frames
  • the frame (1 ) is also made in a slightly arched version, wherein said longitudinal sections (1 a) are given a small degree of curvature.
  • the fourth module (4) of the apparatus of the invention is perfectly alternative, in terms of use and functionality, to the third module (3) shown in Figs. 3A to 3D.
  • the third and fourth module (3, 4) can be made in multiple alternative versions, which only differ in the width of the section of the truncated-pyramidal stems (3a, 4a).

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 Tools And Instruments Or Auxiliary Dental Instruments (AREA)
  • Dental Prosthetics (AREA)

Abstract

La présente invention concerne un appareil modulaire qui peut être utilisé par des techniciens dentaires pour réaliser facilement des structures de raccordement adaptées pour être incorporées dans des prothèses dentaires mobiles.
PCT/EP2011/071962 2010-12-10 2011-12-06 Appareil modulaire pour réalisation de structures de raccordement pour prothèses dentaires mobiles Ceased WO2012076546A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITMC2010A000114A IT1402846B1 (it) 2010-12-10 2010-12-10 Attrezzatura modulare per la realizzazione di strutture di aggancio per protesi dentali mobili.
ITMC2010A000114 2010-12-10

Publications (1)

Publication Number Publication Date
WO2012076546A1 true WO2012076546A1 (fr) 2012-06-14

Family

ID=43736869

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2011/071962 Ceased WO2012076546A1 (fr) 2010-12-10 2011-12-06 Appareil modulaire pour réalisation de structures de raccordement pour prothèses dentaires mobiles

Country Status (2)

Country Link
IT (1) IT1402846B1 (fr)
WO (1) WO2012076546A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3755265A4 (fr) * 2018-02-20 2021-11-03 Lambert J. Stumpel Support modulaire pour prothèse dentaire

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4522596A (en) * 1984-01-20 1985-06-11 Ashkinazy Larry R Modular implant assembly
EP2106768A1 (fr) * 2008-03-31 2009-10-07 Fundacja Uniwersytetu Medycznego Procédé de stabilisation d'une denture complète dans la mâchoire inférieure et système de retenue de barre pour appliquer ce procédé
WO2010005305A1 (fr) * 2008-07-08 2010-01-14 Accura Holding B.V. Dispositif de raccordement et procédé de raccordement dans un système d'implant

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4522596A (en) * 1984-01-20 1985-06-11 Ashkinazy Larry R Modular implant assembly
EP2106768A1 (fr) * 2008-03-31 2009-10-07 Fundacja Uniwersytetu Medycznego Procédé de stabilisation d'une denture complète dans la mâchoire inférieure et système de retenue de barre pour appliquer ce procédé
WO2010005305A1 (fr) * 2008-07-08 2010-01-14 Accura Holding B.V. Dispositif de raccordement et procédé de raccordement dans un système d'implant

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3755265A4 (fr) * 2018-02-20 2021-11-03 Lambert J. Stumpel Support modulaire pour prothèse dentaire
US11564783B2 (en) 2018-02-20 2023-01-31 Lambert J. STUMPEL Modular support for dental prosthesis

Also Published As

Publication number Publication date
ITMC20100114A1 (it) 2012-06-11
IT1402846B1 (it) 2013-09-27

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