Connection between a dental implant and an abutment

Details Connection between a dental implant and an abutment Connection between a dental implant and an abutment

A - Human Necessities

61

C

A61C 8/00 (2006.01)

Patent

CA 2351434

The invention relates to a connection between a known dental implant (1) and a straight or angular abutment (2) which can be established by means of a base screw (3) and a support ring (4). The support ring (4) is fixedly introduced into the inlet of the abutment (2) near the lower edge of same, Preferably by welding or by bending over of the lower edge of the abutment (2). Before insertion of the support ring (4) the base screw (3) is introduced head first into the inlet (24) from the side of the root part of the abutment (2). The base screw is held in the abutment (2) by the support ring (4) on which the base screw (3) rests, The threaded shank (32) of the base screw (3) engages the inner thread (14) provided for in the implant (1) and draws the abutment (2) into the receiving hole (12) of the implant (1). An angled surface of the base screw (3) and a beveled surface of the support ring (4) contact each other so that the welding seam or bent over lower edge of the abutment (2) are relieved of axial stress. The above connection system is designed especially for implants (1) with a conical receiving hole (12) and internal polygon as well as abutments (2) having a complementary external conical shape and external polygon.

L'invention concerne l'assemblage d'un implant dentaire (1) connu en soi et d'un pilier (2) droit ou coudé qui est réalisé au moyen d'une vis de base (3) et d'une rondelle d'appui (4). Dans l'orifice d'insertion du pilier (2) et à proximité de son bord inférieur, la bague d'appui (4) est insérée, de préférence soudée, à demeure ou bien bloquée par repli du bord inférieur du pilier (2). Avant l'insertion de la bague d'appui (4), on introduit la vis de base (3) en insérant d'abord la tête de vis dans l'orifice d'insertion (24), depuis le côté de la partie racine du pilier (2). La vis de base (3) repose sur la bague d'appui (4) et est maintenue par celle-ci dans le pilier (2). La tige filetée (32) de la vis de base (3) s'engage dans l'alésage fileté intérieurement (14) de l'implant (1) et tire le pilier (2) dans l'alésage de réception (12) de l'implant (1). Une surface oblique de la vis de base (3) et un chanfrein de la bague d'appui (4) reposent alors l'un contre l'autre de telle sorte que le cordon de soudure se trouvant au niveau du bord inférieur du pilier (2) ou le pli dudit bord inférieur est libéré des forces axiales. Cet assemblage est conçu en particulier pour des implants (1) pourvus d'un alésage de réception (12) conique et d'un polygone intérieur, ainsi que pour des piliers (2) pourvus d'un cône extérieur complémentaire et d'un polygone intérieur.

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