Structure enabling continuous angular adjustment for fixing a single dental device into an implant. The structure is formed from a ringwise tiltable threaded shank projecting from the implant and a dental device fixing unit comprising a fixing element for fixing the threaded shank to the implant. The fixing element is formed from an insertion piece and an intermediate piece. The lower end of threaded shank is placed between the end of insertion piece and the upper end of intermediate piece. A fixing nut is applied on the threaded shank. The intermediate piece and the insertion piece are secured to each other by means of a joining element placed in implant. The joining element is provided with lower corners and upper corners. A coupling body is installed on joining element. The mould or the frame is fixed to the coupling body by means of the fixing nut.