Method for producing a surface structure on an implant, and such an implant

Abstract

A surface structure is produced on an outer surface of an implant or a fixture and forms a base structure in a range of implants related to different types and qualities of jaw bone. During production of the surface, parts of a turning tool are placed against the implant or against a blank which is intended to form the implant. The parts and/or the implant are assigned controls which give rise to mutual displacements between the parts and the implant so that the parts follow a substantially spiral trajectory along the outer surface. By means of said controls, a long wave pattern is formed with successive peaks and with through lying between these. In this connection, a through can be arranged adjacent to the outer parts of an existing thread. The controls are chosen so as to produce through depths in the range of 25 to 250 μm, preferably 50 to 200 μm. The invention also relates to an implant which bas the same character as the implant produced by the method.

1 - 15 . (canceled) 
     
     
         16 . A method for producing a surface structure on a dental implant, the method comprising:
 cooperating parts of a tool with a blank which is intended to form the dental implant;   forming a thread on the surface of the blank, the thread when seen in side view comprising an outer surface; and   forming a wave pattern comprising at least three peaks and two troughs on the outer surface of the thread, the two troughs separating the three peaks, the three peaks and two troughs extending parallel to each other and extending in a course that follows a spiral trajectory of the thread.   
     
     
         17 . The method as in  claim 16 , further comprising forming an oxide layer on the surface of the dental implant. 
     
     
         18 . The method as in  claim 16 , wherein forming said thread comprises removing material from said blank. 
     
     
         19 . The method as in  claim 16 , wherein forming said thread comprises producing said thread by one of turning, milling, and shot-peening