Dental implant

Abstract

Dental implant with a base body made of ceramic anchorable in a jawbone and an implant superstructure attachable to the base body using a screw, wherein in an assembled state of the dental implant, a threaded portion of the screw engages with an inner thread formed in a blind hole of the base body, wherein the implant superstructure is by the screw pressed against the base body and wherein the engagement between the threaded portion of the screw and the internal thread of the blind hole occurs only in a lower half of the base body facing away from the implant superstructure.

1 . Dental implant with a base body made of ceramic anchorable in a jawbone and an implant superstructure attachable to said base body using a screw, wherein in an assembled state of said dental implant, a threaded portion of said screw engages with an inner thread formed in a blind hole of said base body, and wherein said implant superstructure is by said screw pressed against said base body wherein said engagement between said threaded portion of said screw and said internal thread of said blind hole occurs only in a lower half of said base body facing away from said implant superstructure. 
     
     
         2 . Dental implant according to  claim 1 , wherein said internal thread over its entire length extends only in said lower half of said base body. 
     
     
         3 . Dental implant according to  claim 1 , wherein the length of said blind hole amounts to at least 80% of the total length of said base body. 
     
     
         4 . Dental implant according to  claim 1 , wherein said blind hole comprises a bore, subsequent to said internal thread in the direction of said implant superstructure, which is embodied as a fit bore, wherein there is a clearance fit with very little play or a transition fit between said fit bore and a shank of said inserted screw. 
     
     
         5 . Dental implant according to  claim 4 , wherein the length of said fit bore is greater than the length of said internal thread. 
     
     
         6 . Dental implant according to  claim 1 , wherein said implant superstructure bears against the base body at a bearing surface extending substantially perpendicular to said longitudinal axis of said screw. 
     
     
         7 . Dental implant according to  claim 1 , wherein said implant superstructure comprises an extension that is in the assembled state of the dental implant inserted into a recess of said base body. 
     
     
         8 . Dental implant according to  claim 1 , wherein there is an anti-rotation form fit between said implant superstructure and said base body. 
     
     
         9 . Dental implant according to  claim 1 , wherein both said implant superstructure as well as said base body are manufactured of ceramic material. 
     
     
         10 . Dental implant according to  claim 1 , wherein both said implant superstructure and/or said base body is/are manufactured by powder-injection molding methods. 
     
     
         11 . Base body for a dental implant according to  claim 1 . 
     
     
         12 . Dental implant according to  claim 3 , wherein the length of said blind hole amounts to at least 90% of the total length of said base body. 
     
     
         13 . Dental implant according to  claim 9 , wherein said ceramic material is zirconium oxide.