Patent ID: 8683692
Filing Date: 2014-04-01
Classification: A61C,Y10T

Abstract:
1. A method for manufacturing a dental implant including an abutment, wherein the abutment is manufactured through the steps comprising: a ceramic molded body production step for molding a ceramic molded body composition containing powder composed of oxide-based ceramic and a binder to obtain a ceramic molded body; an assembling step for assembling a titanium member composed of titanium or titanium alloy and the ceramic molded body together to obtain an assembled body; a degreasing step for degreasing the assembled body so that the binder contained in the ceramic molded body are removed therefrom to transform the ceramic molded body into a ceramic degreased body; and a sintering step for sintering the assembled body to transform the ceramic degreased body into a ceramic member so that the ceramic member is firmly fixed to the titanium member, wherein the ceramic molded body has a recess, and the titanium member has a protrusion inserted into the recess, wherein the recess of the ceramic molded body has a size lager than that of the protrusion of the titanium member, wherein in the assembling step, the assembled body is assembled by inserting the protrusion of the titanium member into the recess of the ceramic molded body so that a clearance is existed therebetween, and wherein in the degreasing and sintering steps, when the assembled body is degreased and sintered, the ceramic molded body contracts so that the clearance is eliminated, thereby bringing the protrusion of the titanium member into close contact with and fitting to a recess of the ceramic member.