Disclosed in this specification is a dental implant assembly with an abutment head integrally joined to an implant body. The top section of the abutment head a shape formed by a linear wall adjacent to an arcuate wall; a ledge is located beneath the top section of the abutment; and the abutment head extends above the ledge a distance of from about 1.5 to about 10 millimeters. The implant body has a base section and a neck section, each of which has a different degree of roughness.