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Extracoronal attachment and method for the production thereof

A technology for attachments and shells, applied in the direction of fasteners, etc., can solve problems such as complex, time-consuming and expensive manufacture of temporary dentures, difficulty in manufacturing positioning slots, etc.

Inactive Publication Date: 2011-07-06
CENDRES & METAUX
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Locating slots are quite difficult to manufacture and make repeatable machining on an industrial scale difficult
Furthermore, by having an additional shear stress distributing arm creates a rather complex structure, making the manufacture of temporary dentures time-consuming and expensive

Method used

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  • Extracoronal attachment and method for the production thereof
  • Extracoronal attachment and method for the production thereof
  • Extracoronal attachment and method for the production thereof

Examples

Experimental program
Comparison scheme
Effect test

no. 1 example

[0058] as from figure 1 and 2As can be seen, the male part 10 comprises an abutment 11 , for example fixable (welded) on the crown, which is connected to an end part 13 via a web 12 . The abutment piece 11 has a longitudinal groove on each of its two longitudinal faces 21a and 21c, wherein the two longitudinal grooves extend in the insertion direction of the female part and are connected to each other on the face 21b facing the occlusal surface to form the occlusal surface. supporting surface. This forms a stabilizing groove 20 which extends from one longitudinal side 21 a of the abutment part 11 through the upper part, ie the occlusal side 21 b, to the other longitudinal side 21 c of the abutment part 11 .

[0059] Stable tank 20 in figure 1 The cross-sectional plane indicated by the line A-A has a substantially U-shaped profile and has a circular cross-section, which preferably remains substantially constant along the stabilizing groove 20 . The cross-section of the stab...

no. 3 example

[0068] Figure 11 and 12 And 13 and 14 show two other variants of the male parts 10' and 10", which can be connected to the crown by means of co-casting or laser welding. In Figures 11 to 14 in, with figure 1 and 2 Corresponding parts have the same reference numerals. Male parts 10' and 10" can be used together with female part 25 and friction member 35 to form an attachment.

[0069] as from Figure 11 and 12 As can be seen, the end face of the abutment 11 ′ of the castable male part 10 ′ has a concave abutment face 39 with two longitudinal grooves 40 .

[0070] as from Figure 13 and 14 As seen, the end face of the abutment 11 ″ of the male part 10 ″ connectable by means of laser welding comprises a planar abutment face 41 adjoining a substantially U-shaped inclined side 42 .

no. 4 example

[0072] Figures 15 to 29 Another embodiment of an attachment according to the invention is shown. Figures 15 to 18 The male part 50 shown differs substantially from the male part 10' in that the end part 53 and the occlusal area 55 of the web 52 have rounded outer surfaces. The end piece 53 and the web 52 have an omega-shaped cross section in the lower part of the male part 50 , ie in the area of ​​the base area. The occlusal area 55 of the end piece 53 has a substantially spherical shape. The web 52 is designed as a groove with a circular cross section, which is essentially U-shaped and extends from one longitudinal side of the web 52 via the occlusal surface to the other longitudinal side of the web 52 . In addition to the round shape of the stabilizing groove 20 and the rib 30 , the round shape of the web 52 and the end piece 53 in the occlusal region also facilitates the insertion of the prosthesis. Furthermore, the risk of damage to the friction part 75 is reduced due...

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PUM

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Abstract

The extracoronal attachment comprises a female mold (65), which joins to the dental prosthesis, and a male mold, which can be fastened to a natural tooth or implant and which has an approximal part (51). The approximal part has, on each of two opposite longitudinal sides, at least one longitudinal groove (20) or longitudinal rib inside of which a corresponding longitudinal rib (30) or longitudinal groove of the female mold enters whereby establishing a positive connection, and has at least one occlusally facing bearing surface, on which the female mold rests with a supporting surface. The female mold comprises a housing, with which the longitudinal ribs (30) or longitudinal grooves of the female mold and the supporting surface are provided as a single piece.

Description

technical field [0001] The present invention relates to an extracoronal attachment and a method for producing such an attachment. Background technique [0002] Various attachments are known, wherein generally between intracoronal and extracoronal attachments, where the male part is fixed on the natural tooth or implant - as in this application - there will be The male part is fixed to the natural tooth or to the implant. In contrast to intracoronal attachments, the use of extracoronal attachments augments the anatomical shape of the tooth or the external shape of the implant. The extra-coronal approach is a minimally invasive option for natural teeth in this regard. [0003] Extracoronal attachments of the type mentioned at the outset are known, for example, from the patent documents EP 0 298 909 B1 and EP 0 659 063 B1 of the same applicant. The advantage of such attachments is that they do not require casting, also known as circulation, to be connected to the attachment ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61C13/265
CPCA61C13/2653A61C13/265
Inventor 艾德里安·奥代塞让-弗雷德·斯蒂德马蒂亚斯·斯特拉扎
Owner CENDRES & METAUX
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