Fig. 2From: Impact of machined versus structured implant shoulder designs on crestal bone level changes: a randomized, controlled, multicenter studyImplant macro-designs: RS-line implant left (polished shoulder) and RSX-line implant (rough shoulder) right. RSX-line implants were aimed to be completely inserted leveling the alveolar crest. The intended position for the RS-line implants was 0.5Â mm supracrestal, thus positioning the polished shoulder in direct contact to the oral soft tissue environmentBack to article page