A dental superstructure attaching system for use with a dental implant includes a longitudinal member being connectable with an implant or an implant connecting member via an at least partially curved interface area. The longitudinal member includes a main member forming the lingual part of said longitudinal member, and a lever member forming the buccal or labial part of said longitudinal member. The longitudinal member includes means for urging said lever member and said main member away from each other, such that said longitudinal member is secured to said implant or implant connecting member. The system includes a casing (200) for attachment to a dental superstructure on the outer surface of the casing (200), said casing (200) having a cavity (201) for housing the longitudinal member (102), such that when urging said lever member (102b) and said main member (102a) away from each other, the longitudinal member (102) is secured in said cavity (201).