A prosthetic assembly designed to removably connect a prosthesis to a castable abutment attached to an implant.

Abstract

A prosthetic assembly designed to removably connect a prosthesis to a castable abutment attached to an implant. According to the invention, the assembly incorporates a device consisting of a castable connecting arm (3) shaped, at one end, into a concave arc (31) to facilitate its positioning and attachment to the castable abutment (1), and integrating, at the other end, the castable male portion (41) of a male-female dental attachment (4). The implementation of said device consists of attaching the end (31) of the arm (3) to the castable abutment (1) by applying castable wax or resin (6), and then fabricating, in a single monolithic piece of biocompatible metal, the castable abutment (1), the connecting arm (3), and the male portion (41) of the dental attachment (4) using the known lost-wax casting technique, for the purpose of attaching it to the dedicated implant. Figure for the summary: Fig.3

Description

Title of the invention: Prosthetic assembly for removably connecting a prosthesis to a castable abutment attached to an implant technical field

[0001] The present invention relates to a prosthetic assembly intended to connect a dental prosthesis to at least one castable abutment whose base is an anti-rotational metallic platform intended to be attached to the dedicated implant. Previous technique

[0002] The prior art teaches calcinable abutments, generally made of chrome-cobalt, marketed by implant manufacturers, the base of which is an anti-rotational metallic platform intended to be attached to a dental implant.

[0003] These pillars are always intended to connect a prosthesis in a fixed manner relative to the dedicated implants. Summary of the invention

[0004] The invention proposes a prosthetic assembly intended to connect, in a removable manner, a dental prosthesis to a calcinable abutment, known per se, the base of which is an anti-rotational metallic platform intended to be secured to a dental implant, in particular by screwing.

[0005] Said assembly is essentially characterized in that it comprises, in cooperation:

[0006] a) a device consisting of a calcinable connecting arm shaped, at one of its ends, into an arc of concave circumference intended to facilitate its positioning and its fixing to the calcinable pillar and integrating, at the other end, the calcinable male part of a male-female dental attachment;

[0007] b) the metallic female part of said dental attachment intended to be integrated into the dental prosthesis and to fit, in a removable manner, like a clip, onto the male part of the attachment;

[0008] c) a split metallic elastic annular segment, acting as a clip, intended to be housed inside two opposing circular grooves arranged respectively on the two opposing faces of the two parts of the dedicated attachment.

[0009] The invention also relates to the method of implementing the various components of the claimed assembly.

[0010] The number of sets according to the invention is a function of the number of implants associated with the removable prosthesis. Brief description of the drawings

[0011] The features and advantages of the invention will become more apparent upon reading the following detailed description of at least one preferred embodiment thereof given by way of non-limiting example and shown in the accompanying drawings.

[0012] On these drawings:

[0013] [Fig-1] represents the basic device according to the invention (association of a support and the male part of a truncated cone-shaped dental attachment), made of calcinable material.

[0014] [Fig.2] represents (in median section) the metallic additives (conical female part said dental attachment and elastic split metallic annular segment) complementing the basic device to ensure its operation once it has been transformed into metal.

[0015] [Fig.3] represents the basic calcinable device according to the invention attached to the Abutment that can be calcined after metal casting into a single unit which is attached to the implant. Description of the implementation methods

[0016] With reference to these drawings, the prosthetic assembly intended to connect, in a removable manner, by means of a male-female dental attachment (4), a dental prosthesis to a castable abutment (1) whose base (11) is an anti-rotational platform, generally made of Chrome-Cobalt, intended to be secured to a dental implant (2), characterized in that it comprises, in cooperation:

[0017] a) a device consisting of a calcinable connecting arm (3) shaped, at one of its ends, into an arc of concave circumference (31) intended to facilitate its positioning and its attachment to the calcinable abutment (1) and integrating, at the other end, the male calcinable part (41) of the dental attachment (4);

[0018] b) the metallic female part (42) of the dental attachment (4) intended to be integrated into the dental prosthesis and to fit, in a removable manner, like a clip, onto the male part (41) of the attachment (4);

[0019] c) a split metallic elastic annular segment (5), acting as a clip, intended to be housed inside two opposing circular grooves (43) and (44) arranged respectively on the two opposing faces of the two parts (41) and (42) of the attachment (4).

[0020] The method of implementing the device according to the invention consists of securing the concave end (31) of the support (3) to the calcinable pillar (1), by the addition of wax or calcinable resin (6), respecting, for the axis of the male part (41), its alignment with the vertical insertion axis of the prosthesis.

[0021] The method for implementing the device according to the foregoing consists of producing, in a single monolithic piece, from biocompatible metal, according to the known technique of the lost wax, the calcinable abutment (1), the connecting bracket (3) and the part (41) of the dental attachment (4), for the purpose of its attachment to the dedicated implant.

[0022] Calculable abutments (1) are mainly used when the inclination of the implant is significant (up to 30°).

[0023] In the preferred embodiment of the invention, the attachment (4) is frustoconical. It corresponds to that described in patent EP2440153 of the same applicants.

[0024] Obviously, it could be cylindrical or of any other shape.

[0025] Said attachment compensates for any parallelism deviation that may exist after metal casting. The two parts (41) and (42) are held, in a removable manner, by the elastic metal annular segment (5).

[0026] The advantages of a removable prosthesis compared to a fixed prosthesis have been extensively discussed in the dental literature. The main advantage is improved dental hygiene, which prevents the all-too-frequent and disastrous consequences of peri-implantitis.

[0027] Of course, a person skilled in the art will be able to carry out the invention as described and represented by applying and adapting known means without it being necessary to describe or represent them.

[0028] It may also provide for other variants without going out of the scope of the invention as determined by the content of the claims.

Claims

Demands

1. A prosthetic assembly intended to connect, in a removable manner, by means of a male-female dental attachment (4), a dental prosthesis to a castable abutment (1) whose base (11) is an anti-rotational platform, generally made of Chrome-Cobalt, intended to be secured to a dental implant (2), characterized in that it comprises, in cooperation: a) a device consisting of a calcinable connecting arm (3) shaped, at one of its ends, into an arc of concave circumference (31) intended to facilitate its positioning and its fixing, by the addition of wax or calcinable resin (6), to the calcinable abutment (1) and integrating, at the other end, the calcinable male part (41) of the dental attachment (4); b) the female metallic part (42) of the dental attachment (4) intended to be integrated into the dental prosthesis and to fit, in a removable manner, like a clip, onto the male part (41) of the attachment (4); (c) a split metallic elastic annular segment (5), acting as a clip, intended to be housed inside two opposing circular grooves (43) and (44) arranged respectively on the two opposing faces of the two parts (41) and (42) of the attachment (4).

2. Assembly, according to claim 1, characterized in that the device consisting of a calcinable connecting arm (3), the calcinable male part (41) of the dental attachment (4) and the calcinable abutment (1), is obtained, according to the lost-wax technique, in a single monolithic piece, of biocompatible metal, for the purpose of its attachment to the dedicated implant.

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