ES2354102B1 - CONNECTION OF SUPPORT ELEMENT-PROTESIC ADDITION FOR DENTAL PROSTHESIS. - Google Patents

Abstract

Connection of prosthetic support-attachment element for dental prostheses. # The invention relates to a connection of prosthetic support-attachment element (14a, 14b, 14c, 14d) for dental prostheses of the type comprising an implant (10a, 10b, 10c, 10d) replacing a dental root, a transmucosal abutment (18b, 18d) connected to said implant (10a, 10b, 10c, 10d) so that said implant (10a, 10b, 10c, 10d) and said transmucosal abutment ( 18b, 18d) act as support elements, and a prosthetic attachment (12a, 12b, 12c, 10c, 12d) coupled to a support element selected from the implant (10a, 10b, 10c, 10d) and the transmucosal abutment (18b, 18d). The prosthetic implant-attachment connection (14a, 14b, 14c, 14d) consists of a recess in one of the support element and the prosthetic attachment (12a, 12b, 12c, 12d) and a corresponding protrusion in the other of the support element and the prosthetic attachment (12a, 12b, 12c, 12d). In this way, said recess and said projection act together on the contact surface between the support element and the prosthetic attachment (12a, 12b, 12c, 12d) to improve the fit between them and therefore the stability and safety of the prosthesis resulting dental.

Description

preferred invention invention, provided by

Connection of support element-prosthetic attachment for dental prostheses. Field of the Invention

The present invention relates generally to the field of implant-supported dental prostheses, and more specifically to the connections between the prosthetic attachment and the corresponding support element in each case (either an implant or a transmucosal abutment) of said dental prostheses. Background of the invention

At present, the techniques for implanting dental prostheses are widespread. These techniques allow dental roots to be replaced by implants, to which the corresponding prosthetic attachments are attached.

In some cases, a transmucosal abutment that acts as a connection between the two elements is included between the implant and the prosthetic attachment. Both the implant and the transmucosal abutment (if present) act as support elements for the prosthetic attachment. Generally, the prosthetic attachment is directly coupled to the transmucosal abutment (if used) or in its absence to the previously installed implant.

The contact surfaces between the prosthetic attachment and the corresponding support element (either the transmucosal abutment or the implant) can be of several types, mainly screwed or friction. Depending on the greater or lesser tightening of the screwing, or the greater or lesser pressure of the operator in cases of friction, slight mismatches may occur in said contact surface that are transmitted when making immediate prostheses in the mouth or impressions when making the prosthesis definitive, thus causing stresses of forces that can cause fracture of the prosthetic joint to the implant.

Therefore, there is in the art a new connection between the prosthetic attachment and the corresponding support element in a dental prosthesis that allows to improve the fit between them thus avoiding the risk of fracture of the prosthetic joint to the implant as mentioned. previously. Summary of the invention

The present invention relates to a prosthetic support-attachment element connection for dental prostheses. The dental prostheses to which the present invention can be applied are of the type comprising an implant that replaces a dental root, a transmucosal abutment connected to said implant so that said implant and said transmucosal abutment act as support elements, and a prosthetic attachment. coupled to a support element selected from the implant and the transmucosal abutment.

The prosthetic implant-attachment connection of the present invention consists of:

-

a recess in one of the support element and the prosthetic attachment; Y

-

a corresponding projection on the other of the support element and the prosthetic attachment.

Thus, said recess and said projection act together on the contact surface between the support element and the prosthetic attachment to improve the fit between them and therefore the stability and safety of the resulting dental prosthesis. Brief description of the drawings

The present invention will be better understood by way of example, and should not be construed as limiting the invention in any way.

Figure 1 is a cross-sectional view of a first embodiment of the invention showing a prosthetic attachment connection to an external connection implant, together with an enlarged detail of the connection of the invention.

Figure 2 is a cross-sectional view of a second embodiment of the invention showing a prosthetic attachment connection to a transmucosal abutment, together with an enlarged detail of the connection of the invention.

Figure 3 is a cross-sectional view of a third embodiment of the invention showing a prosthetic attachment connection to an internal connection implant, together with an enlarged detail of the connection of the invention.

Figure 4 is a cross-sectional view of a fourth embodiment of the invention showing a prosthetic attachment connection to a transmucosal abutment, together with an enlarged detail of the connection of the invention.

Figure 5 is a detail of the prosthetic support-attachment element connection according to a preferred embodiment of the present invention. Detailed description of the preferred embodiments

Figures 1-4 show different examples of dental prostheses in which various preferred embodiments of the connection of the present invention can be applied. Figure 1 shows a first situation in which first an implant (10a) is introduced to replace a dental root of a patient, and then an external prosthetic attachment (12a) is coupled directly onto said implant (10a). In the enlarged detail of said Figure 1 the connection (14a), according to this first preferred embodiment of the present invention, is more clearly observed on the contact surface between the implant (10a) (support element) and the prosthetic attachment (12a ). Furthermore, according to this preferred embodiment, an auxiliary toroid connection (16a) is also provided on said contact surface to further improve the fit between said elements.

A second preferred alternative embodiment of the connection according to the present invention is shown in Figure 2. In this case, the dental prosthesis comprises an implant (10b) followed by a transmucosal abutment (18b) attached to said implant (10b). The external prosthetic attachment (12b) is coupled in this case directly to the transmucosal abutment (18b) serving the connection (14b) as in the previous case to improve the fit between the external prosthetic attachment (12b) and the corresponding support element (in this case the transmucosal abutment (18b), so that the stability and safety of the resulting dental prosthesis is improved.

Figure 3 shows a third embodiment of the invention similar to that shown in Figure 1, that is, with direct connection between the implant (10c) and the prosthetic attachment (12c) without using an intermediate transmucosal abutment. In this case it is a direct connection (14c) to implant by internal connection.

On the other hand, Figure 4 shows a fourth embodiment of the invention that combines the characteristics of that of Figure 2 with that of Figure 3. That is,

3 EN 2354102A1 4

it is a connection (14d) between prosthetic attachment (12d) and transmucosal abutment (18d), which in turn is coupled to an implant (10d). In this case, it is a pillar connection via internal connection.

Although Figures 1-4 show various embodiments of dental prostheses in which the support-attachment element connection according to the present invention can be applied, Figure 5 shows a detail of said support-attachment element connection. According to the preferred embodiment, the range of functionality of the connection according to the invention is for a radius value of the shoulder (RM) between 0 mm and 0.75 mm. On the other hand, the height of the recess (HH) is preferably between 0 mm and 5.5 mm.

Although in the previous embodiments the projection of the connection according to the invention has always been shown in the prosthetic attachment and the recess in the support element (either the implant or the transmucosal abutment), it will be evident to the person skilled in the art that this This situation may be reversed (highlight in the support element and recess in the prosthetic attachment) without thereby altering the operation of the invention or departing from the scope thereof.

5 EN 2354102A1 6

Claims (8)

1. Connection of support element-prosthetic attachment (14a, 14b, 14c, 14d) for dental prostheses, including the dental prosthesis

-

an implant (10a, 10b, 10c, 10d) that replaces a dental root;

-

a transmucosal abutment (18b, 18d) connected to said implant (10a, 10b, 10c, 10d);

said implant (10a, 10b, 10c, 10d) and said transmucosal abutment (18b, 18d) acting as support elements; Y

-

a prosthetic attachment (12a, 12b, 12c, 12d) coupled to a support element selected from the implant (10a, 10b, 10c, 10d) and the transmucosal abutment (18b, 18d),

characterized in that the prosthetic implant connection (14a, 14b, 14c, 14d) consists of:

-

a recess in one of the support element and the prosthetic attachment (12a, 12b, 12c, 12d); Y

-

a corresponding projection on the other of the support element and the prosthetic attachment (12a, 12b, 12c, 12d);

so that said recess and said projection act jointly on the contact surface between the support element and the prosthetic attachment (12a, 12b, 12c, 12d) to improve the fit between them and therefore the stability and safety of the prosthesis resulting dental. 2. Connection of support element-prosthetic attachment (14a, 14b, 14c, 14d) according to claim 1, characterized in that the recess is in the support element and the protrusion in the prosthetic attachment (12a, 12b, 12c, 12d ).

3.

Connection of support element-prosthetic attachment (14a, 14b, 14c, 14d) according to any of the preceding claims, characterized in that it further comprises an additional toroid connection (16a) to further improve the fit between the support element and the prosthetic attachment (12a, 12b, 12c, 12d).

Four.

Connection of prosthetic support-attachment element (14a, 14b, 14c, 14d) according to any of the preceding claims, characterized in that it is an external connection, in which the prosthetic attachment (12a, 12b, 12c, 12d) envelops the element of support.

5.

Connection of prosthetic support-attachment element (14a, 14b, 14c, 14d) according to any of claims 1 to 3, characterized in that it is an internal connection, in which the prosthetic attachment (12a, 12b, 12c, 12d) is introduced inside the support element.

6.

Connection of support element-prosthetic attachment (14a, 14b, 14c, 14d) according to any of the preceding claims, characterized in that the contact surface between the support element and the prosthetic attachment (12a, 12b, 12c, 12d) is selected of the group consisting of screwed surfaces and friction surfaces.

7.

Connection of support element-prosthetic attachment (14a, 14b, 14c, 14d) according to any of the preceding claims, characterized in that the radius value of the shoulder (RM) is between 0 mm and 0.75 mm and the height of the Notch (HH) is between 0 mm and 5.5 mm.

SPANISH OFFICE OF THE PATENTS AND BRAND Application no .: 201031653 SPAIN Date of submission of the application: 10.11.2010 Priority Date: REPORT ON THE STATE OF THE TECHNIQUE 51 Int. Cl.: See Additional Sheet RELEVANT DOCUMENTS

Category

Documents cited Claims Affected

X

WO 0224104 A1 (CATTANEO ALESSANDRO) 28.03.2002, page 1, line 2 - page 9, line 34; 1-7

Figures 1-8.

X

WO 9717907 A1 (WADE CURTIS K) 22.05.1997, description; figures. 1-7

X

US 2003224331 A1 (KUMAR AJAY et al.) 04.12.2003, description; figures. 1-7

TO

US 2010151423 A1 (RANCK ROGER S et al.) 06.17.2010, description; figures. 1-7

TO

US 6068479 A (KWAN NORMAN HO-KWONG) 30.05.2000, description; figures. 1-7

TO

DE 4326841 A1 (BECKER VERFAHRENSTECH) 16.02.1995, description; figures. 1-7

Category of the documents cited X: of particular relevance Y: of particular relevance combined with other / s of the same category A: reflects the state of the art O: refers to unwritten disclosure P: published between the priority date and the date of priority submission of the application E: previous document, but published after the date of submission of the application

This report has been prepared • for all claims • for claims no:

Date of realization of the report 22.02.2011

Examiner I. Rodríguez Goñi Page 1/4

REPORT OF THE STATE OF THE TECHNIQUE Application number: 201031653 CLASSIFICATION OBJECT OF THE APPLICATION A61C8 / 00 (01.01.2006) A61C13 / 12 (01.01.2006) A61C13 / 265 (01.01.2006) Minimum documentation sought (classification system followed by classification symbols) A61C Electronic databases consulted during the search (name of the database and, if possible, terms of search used) INVENTIONS, EPODOC, WPI State of the Art Report Page 2/4  WRITTEN OPINION Application number: 201031653 Date of Completion of Written Opinion: 02.22.2011 Statement

Novelty (Art. 6.1 LP 11/1986)

Claims Claims 2-7 1 IF NOT

Inventive activity (Art. 8.1 LP11 / 1986)

Claims Claims 1-7 IF NOT

The application is considered to comply with the industrial application requirement. This requirement was evaluated during the formal and technical examination phase of the application (Article 31.2 Law 11/1986).  Opinion Base.- This opinion has been made on the basis of the patent application as published. State of the Art Report Page 3/4  WRITTEN OPINION Application number: 201031653 1. Documents considered.- The documents belonging to the state of the art taken into consideration for the realization of this opinion are listed below.

Document

Publication or Identification Number publication date

D01

WO 0224104 A1 (CATTANEO ALESSANDRO) 03/28/2002

D02

US 2010151423 A1 (RANCK ROGER S et al.) 06.17.2010

D03

US 6068479 A (KWAN NORMAN HO-KWONG) 30.05.2000

2. Statement motivated according to articles 29.6 and 29.7 of the Regulations for the execution of Law 11/1986, of March 20, on Patents on novelty and inventive activity; quotes and explanations in support of this statement The object of the invention is a connection between two pieces, corresponding to the field of dental prostheses. implant-supported, one of them being a support element (either an implant or a transmucosal abutment) and the other piece a prosthetic attachment. Said connection is made by providing one of the pieces to be connected with a recess and the Another piece with a highlight. The technical problem to be solved is to overcome the problems observed in the joints between the surfaces of contact of the parts to be connected, such as when for example said parts are connected by screwing or friction, since mismatches can occur in the aforementioned contact surfaces, which can result in tensions capable of even causing fractures. The technical solution proposed is to provide one of the joining surfaces of a recess and the other with a projection. To the penetrating the protrusion into the recess is achieved, as a technical effect, a better fit between the pieces and a greater stability and safety in the resulting dental prosthesis. It should be noted that in the state of the art various technical solutions are known as those raised in the request; The inventive concept of the protrusion-recess claimed is nothing more than making one of the pieces penetrate the another, usually by convex-concave, male-female configurations, so that when part of a piece in the other piece, it is achieved that the one retains the other, thus achieving the intended stability. For claim 1, document D01 is considered the closest state of the art. D01 discloses a connection of prosthetic support-attachment for dental prostheses, including the prosthesis: -a implant -a pillar connected to said implant, said abutment and said implant acting as support elements, and; -a prosthetic attachment attached to the abutment and said connection consisting of a recess in the prosthetic attachment and a protrusion in the abutment, so that said recess and said projection act together on the contact surface between the prosthetic attachment and the abutment, to improve the fit between them and therefore the stability and safety of the resulting dental prosthesis. The features of claim 1 are therefore anticipated by D01. It is noted however that: -In claim 1 we speak of a transmucosal abutment; but whether or not the pillar is transmucosal is a characteristic that does not contribute to the technical result of the invention. For all the foregoing, claim 1 is considered to be novel (Art. 6.1 LP 11/1986). Dependent claim 2 is an obvious design variant for the person skilled in the art, although claim would be considered new (Art. 6.1 LP 11/1986), would lack inventive activity (Art. 8.1 LP 11/1986). Dependent claim 3 further incorporates an additional toroid connection; toroidal connections are widely known; in document D01 itself a variant is observed in which the recess is toroidal; they can see also toroidal connections in the documents: D02 and D03. The mere fact of incorporating such a connection It lacks inventive activity. Dependent claims 4 to 6 are design variants that lack inventive activity (Art. 8.1 LP 11/1986). Dependent claim 7 incorporates ranges of values from which no unexpected technical effect is deduced. therefore it lacks inventive activity (Art. 8.1 LP 11/1986). State of the Art Report Page 4/4