The present invention relates to a kind of root pin (WS) to have pin (ST), then canalis radicis dentis tooth remnant can be introduced, a kind of building element (VA) and artificial tooth (KR). In the building element (VA) of pin (ST), radial projection (RV) is formed, which separates tooth residue from artificial tooth (KR), at building element (VA), it projects (RV), and pin (ST) is plastic material made in one piece.
