EP2408395A1 - Dispositif de fixation d'une prothèse dentaire - Google Patents

Dispositif de fixation d'une prothèse dentaire

Info

Publication number
EP2408395A1
EP2408395A1 EP10709151A EP10709151A EP2408395A1 EP 2408395 A1 EP2408395 A1 EP 2408395A1 EP 10709151 A EP10709151 A EP 10709151A EP 10709151 A EP10709151 A EP 10709151A EP 2408395 A1 EP2408395 A1 EP 2408395A1
Authority
EP
European Patent Office
Prior art keywords
die
connecting part
section
cross
recess
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP10709151A
Other languages
German (de)
English (en)
Inventor
Markus Bluemli
Hans-Ullrich Stanger
Mathias Strazza
Jean-Fred Studer
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.)
Cendres and Metaux SA
Original Assignee
Cendres and Metaux SA
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 Cendres and Metaux SA filed Critical Cendres and Metaux SA
Publication of EP2408395A1 publication Critical patent/EP2408395A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C13/00—Dental prostheses; Making same
    • A61C13/225—Fastening prostheses in the mouth
    • A61C13/265—Sliding or snap attachments
    • A61C13/2656—Snap attachments
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C13/00—Dental prostheses; Making same
    • A61C13/225—Fastening prostheses in the mouth
    • A61C13/275—Fastening prostheses in the mouth removably secured by using bridging bars or rails between residual teeth
    • 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 invention relates to a device for fixing a dental prosthesis according to the preamble of claim 1.
  • Such devices have a connecting part, which is attachable to a bridge patrix to attach it to the denture in a detachable manner.
  • the connecting part has for this purpose a recess into which the bar male is inserted (see, for example, WO 2008/034267 A1).
  • the shape of this recess is adapted to the cross section of the web die in such a way that a positive connection between the connecting part and the web die results.
  • a positive engagement makes it difficult to fully integrate the connecting part and there is the risk that the connecting part will not be in optimum contact with the web die. This can cause the dentures to move back and forth during chewing movements in a feathering manner, which is perceived as disturbing.
  • An object of the present invention is to provide a device for fixing a dental prosthesis, with which the support of the dental prosthesis is improved on a Streispatrize.
  • Show it 1 is a front view of serving as a connecting part web die according to a first embodiment of an inventive device.
  • Fig. 2 is a front view of a web die according to the first embodiment
  • FIG. 3 shows the web die according to FIG. 1 and the web die according to FIG. 2 in the connected state
  • FIG. 4 is a perspective view of web die and web die according to FIG. 3; FIG.
  • FIG. 5 is a perspective view of a second embodiment of a device according to the invention.
  • FIG. 6 is a front view of the web die according to FIG. 5; FIG.
  • FIG. 7 is a front view of the web die according to FIG. 5; FIG.
  • FIG. 8 shows the web die according to FIG. 6 and the web die according to FIG. 7 in the connected state
  • FIG. 9 is a partially sectioned front view of a third embodiment of an inventive
  • FIG 10 is a front view of a fourth embodiment of an inventive device.
  • Figures 1 - 4 show a first embodiment of a device with a serving as a connecting part Web die 10 and a web die 20. These are connected to each other in a detachable manner and are also referred to below as a simple template and male.
  • the die 10 is formed as an elongated housing, which occlusally interconnected side parts (hereinafter also called lamellae) comprises, and has a cross-sectional shape, as seen in Fig. 1.
  • the die 10 is provided with a recess 15 into which the male part 20 can be inserted and which is bounded by two side walls 11 and 12. These are connected to each other via a ceiling element in the form of a curvature 13.
  • the side walls 11, 12 are formed as substantially planar surfaces which are substantially parallel to each other but which are chamfered at their basal end, resulting in a chamfer 11a, 12a.
  • the provision of the chamfers IIa, 12a facilitates the insertion of the die 10 and the male part 20.
  • the curvature 13 has at the transition to the respective side wall 11, 12 an undercut 13a and 13b and has seen in cross-section a maximum distance D, which is greater than the distance A, the side walls 11, 12 in the region of the transition to the undercut 13a , 13.
  • the respective side wall 11, 12 thus projects with respect to the undercut 13a, 13b.
  • the curvature 13 is seen in cross-section of two circular arc-shaped sections together, which in each case one of the two undercuts 13a, 13b and which includes a in the Substantially straight section 13c are interconnected.
  • the height h of the respective side wall 11, 12 is chosen here so that it is greater than half the depth H of the recess 15, that is, h> H / 2.
  • Fig. 3 shows the situation when the male part 20 is inserted into the recess 15 of the die 10.
  • the first side wall 11 of the die 10 forms a first support location which contacts the first side wall 21 of the male part 20.
  • the second side wall 12 of the die 10 forms a second support location which contacts the second side wall 22 of the male part 20.
  • the section 13 c of the curvature 13 forms a third support point, which touches the vertex of the arc 23 of the male part 20 in the present embodiment.
  • the curvature 13 Due to the selected shape of the curvature 13 results between the first, 11, and third support point 13c and the second, 12, and third support point 13c each have a free space 14a, 14b. It is therefore not complete Positive fit between the die 10 and male 20 given, but the curvature 13 has an excess so that it partially spaced from the arc 23 runs.
  • the three support points 11, 12 and 13c form a three-position support of the die 10 on the male part 20.
  • SO and SO 1 indicates the level above which the space 14a, 14b rises, while the distance between Sl and S2, the length, L2, of the third support point 13c defined.
  • the free space 14a thus extends over a length Ll extending from SO to Sl, and correspondingly the free space 14b extends over a length Ll "extending from SO 'to S2.
  • Ll and Ll 1 are larger than L2.
  • the level defined by SO and SO 1 is closer to the final level to which the recess 15 extends than to the initial level where the recess 15 begins. (See Fig. 1, in which the height h corresponds to the level defined by SO and SO 1 and the height H indicates the difference between the final level of the recess 15 and its initial level.)
  • FIG. 4 shows a perspective view of the die 10 placed on the male part 20.
  • this has markings 17 on the occlusal side. These are formed here in the form of incisions which are arranged at regular intervals and extend transversely to the longitudinal direction of the die 10.
  • the markings 17 define possible
  • Die 10 and male part 20 form a bridge attachment.
  • the between The friction generated by the walls 11 and 21 and the walls 12 and 22 determines the holding force with which the die 10 is held on the male part 20.
  • the holding force is given, inter alia, by the selected height h and can be adjusted within certain limits by the inclination of the
  • the die 10 is located at three support points 11, 12, 13c on the male part 20 at.
  • the position of these support points can be specified exactly. In the present example, the position is chosen so that the support points 11 and 12 are below the level where the arc 23 of the male part 20 ends. This level is indicated in Fig. 3 by the dashed line 24.
  • the respective free space 14a, 14b thus extends over the level 24, and the support points 11 and 12 abut against the side walls 21 and 22 of the male part 20.
  • the transition of the free space 14a, 14b to the support point 11, 12 essentially defines the location where a force transmission of the male part 20 to the side walls 11, 12 can take place. This location hardly shifts, even if a different holding force is set, and is located near the occlusal end of the die 10, whereby the lever arm of the power transmission can be kept small.
  • the shaping of the recess 15 furthermore ensures that the male part 20 can be received in it in such a way that lifting off of the female part 10 from the male part 20 is avoided.
  • the shaping of the recess 15 furthermore ensures that the male part 20 can be received in it in such a way that lifting off of the female part 10 from the male part 20 is avoided.
  • FIGS. 5-8 show a second exemplary embodiment of a device with a web die 10 and a web die 20 'for forming a web joint according to Dolder.
  • the die 10 which is shown again in FIG. 6, corresponds to the die according to the first embodiment.
  • the cross section of the male part 20 ' is egg-shaped, as can be seen in FIG.
  • the contour has a circular arc at the apex, which merges at its two ends in each case in an arc with a larger curvature.
  • the level at which this circular arc ends is indicated in Fig. 8 by the dashed line 24 '.
  • the support points 13a and 13b When inserting the die 10, the support points 13a and 13b pushed over the level 24 ', which defines the widest point of the male 20', which ultimately leads to a snapping of the blades of the die 10 on the male 20 '. This snapping in addition to the friction determines the holding force with which the die 10 is held on the male part 20 '.
  • a three-position support which ensures that the die 10 reaches its final position during insertion and is not lifted from this again. This prevents a resilient relative movement between the die 10 and the male part 20 'resulting in a load. As a web joint, however, the die 10 can be moved with respect to the male 20 'about its longitudinal axis.
  • the support points 13a, 13b, 13c move accordingly along the male 20 '.
  • a variant of the first embodiment is shown, in which the die is formed directly in the denture 40 and an insert 10 'as a connecting part serves to attach the denture 40 to the bridge patrix 20.
  • the insert 10 ' is removably inserted in a recess 41 formed in the denture 40. This is formed for example as a prosthesis with a plastic part, in which the recess 41 is provided during manufacture.
  • the insert 10 ' is formed as an elongated connecting part which extends along the web die 20 and which is provided with a recess 15, which is designed as in the first embodiment. There are thus formed between the Stegpatrize 20 and the insert 10 'support points 11, 12, 13c, via which the prosthesis 40 rests on the Stegpatrize 20. Between the support points 11 and 13c and 12 and 13c, the free spaces 14a and 14b arise.
  • a further variant of the first embodiment is shown, in which the web die 10 '' is formed in several parts.
  • the web die 10 has a die housing 10a into which an insert 10b is removably inserted.
  • the insert 10b has a recess 15 'into which the web die 20 is inserted and which in the present Embodiment is designed so that the insert 10 b rests positively on the web die 20.
  • the die housing 10a has a recess 15 into which the web die 20 is inserted together with the insert 10b.
  • the recess 15 is configured as in the first embodiment. There are thus formed between the female housing 10a and the insert 10b support points 11, 12, 13c, via which the dentures can rest on the Stegpatrize 20. Between the support points 11, 12, 13c, the free spaces 14a, 14b arise.
  • the parts 10, 10 ', 10a, 10b, 20, 20' are each one or more pieces produced and can be prefabricated. They consist of a mouth-resistant material, such as a suitable metal such as titanium or plastic.
  • the shape of the recess 15 can be e.g. by milling, by the tool in the longitudinal direction of the die 10 is guided. This can e.g. in several
  • Operations are carried out by first a U-shaped cut is milled and then subsequently with a spherical tool, the two undercuts 13a, 13b are generated.
  • the respective part 10, 10 ', 10a, 10b can be produced as a long profile bar, from which the user can cut off a piece of the desired length in each case.
  • the bar patrix may not necessarily be shaped as shown in the figures. Its cross-section may also have another convex, e.g. have a rectangular, or even more general shape.
  • the bar male can for example be provided at the ends with means for attachment to implants or natural teeth.
  • the bulge 13 and the side walls 11, 12 need not be shaped as shown in the figures.
  • the section 13c may be straight or curved and / or the respective side wall 11, 12 may be flat or curved.
  • the length over which the third support point 13c extends can be chosen as small as desired (compare the distance between S1 and S2 in FIG. Under certain circumstances, the length can be vanishingly small, so that the support point 13c seen in cross-section is almost punctiform.

Landscapes

  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Dentistry (AREA)
  • Epidemiology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • Oral & Maxillofacial Surgery (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Orthopedic Medicine & Surgery (AREA)
  • Dental Tools And Instruments Or Auxiliary Dental Instruments (AREA)
  • Prostheses (AREA)
  • Dental Prosthetics (AREA)

Abstract

L'invention concerne un dispositif de fixation d'une prothèse dentaire qui comporte un moule mâle à barrette (20) et une pièce de liaison (10) qui peut être appliquée sur la prothèse dentaire et comporte un évidement dans lequel le moule mâle à barrette peut être inséré et qui est entouré par deux parois latérales (11, 12) qui sont reliées par un élément de couverture (13). Les parois latérales (11, 12) et l'élément de couverture (13) sont formés de telle manière que la prothèse dentaire, quand elle est placée sur le moule mâle à barrette (20) au moyen de la pièce de liaison (10) appliquée sur la prothèse dentaire, repose sur le moule mâle à barrette par un premier (11), un deuxième (12) et un troisième point d'appui (13c), un espace libre (14a, 14b) se trouvant chaque fois entre les premier et troisième points d'appui et les deuxième et troisième points d'appui.
EP10709151A 2009-03-19 2010-03-16 Dispositif de fixation d'une prothèse dentaire Withdrawn EP2408395A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH00412/09A CH700634A1 (de) 2009-03-19 2009-03-19 Vorrichtung zur Befestigung eines Zahnersatzes.
PCT/CH2010/000072 WO2010105380A1 (fr) 2009-03-19 2010-03-16 Dispositif de fixation d'une prothèse dentaire

Publications (1)

Publication Number Publication Date
EP2408395A1 true EP2408395A1 (fr) 2012-01-25

Family

ID=40786700

Family Applications (1)

Application Number Title Priority Date Filing Date
EP10709151A Withdrawn EP2408395A1 (fr) 2009-03-19 2010-03-16 Dispositif de fixation d'une prothèse dentaire

Country Status (8)

Country Link
US (1) US8562345B2 (fr)
EP (1) EP2408395A1 (fr)
JP (1) JP2012520693A (fr)
KR (1) KR20110128934A (fr)
CN (1) CN102348429A (fr)
CA (1) CA2755423A1 (fr)
CH (1) CH700634A1 (fr)
WO (1) WO2010105380A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9655699B2 (en) * 2009-07-23 2017-05-23 Lieh-Tang Chen Artificial teethridge and fang
SE535361C2 (sv) * 2010-11-10 2012-07-10 Biomain Ab Dentalbryggor och superstrukturer, samt metoder för att tillverka dessa
EP2854698A4 (fr) 2012-06-04 2016-03-16 Skvirsky Igor Dispositif pour la fixation amovible d'une prothèse dentaire

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1367885A (en) * 1920-08-26 1921-02-08 Joseph K Means Dental appliance
DE1516457A1 (de) * 1966-03-22 1970-01-15 Gerhard Wittenhagen Einrichtung zur Befestigung einer Zahnprothese an ?
US4209904A (en) * 1978-10-23 1980-07-01 Staubli Peter E Rider clip with offset retention flaps and retention bar for denture
DE4422773C2 (de) * 1994-06-29 1996-08-29 Ceka Nv Dentale Kupplungsanordnung
JP2002102258A (ja) * 2000-09-29 2002-04-09 Aichi Steel Works Ltd バータイプインプラント用義歯アタッチメント
ATE526900T1 (de) * 2006-06-21 2011-10-15 Cendres & Metaux Sa Anordnung zur befestigung einer zahnprothese an einer stegpatrize
US8100691B2 (en) 2006-09-21 2012-01-24 Peter Sprenger Dental Technik Bar matrix

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2010105380A1 *

Also Published As

Publication number Publication date
KR20110128934A (ko) 2011-11-30
CA2755423A1 (fr) 2010-09-23
US20120003608A1 (en) 2012-01-05
JP2012520693A (ja) 2012-09-10
CH700634A1 (de) 2010-09-30
US8562345B2 (en) 2013-10-22
WO2010105380A1 (fr) 2010-09-23
CN102348429A (zh) 2012-02-08

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