The invention relates to an arrangement, comprising an implant (1, 1'), which is designed to be implanted in a jaw bone (10), and a mounting part (5, 5a, 5b, 5c), which is designed to be placed on a portion of the implant (1, 1') protruding from the jaw bone (10), said implant (1, 1') being made of plastics or comprising a plastic material, and the implant (1, 1') having an implant stump (2), which is made of plastics or comprises a plastic material, and the mounting part (5, 5a, 5b, 5c) is or can be fastened on the implant stump (2). The aim of the invention is to stabilize an implant which is made of plastics or comprises a plastic material, as a whole but at least in a top portion that projects from the jaw bone once the implant has been implanted. For this purpose, the mounting part (5, 5a, 5b, 5c) is made of a material or comprises a material which is more rigid than the plastics from which the implant stump (2) is made or which the implant stump (2) comprises. The invention further relates to an implant (1, 1') and to a method for treating an implant (1, 1').
