Abutment screw loosening is the second most common cause of…
To minimize the the settling effect, abutment screws should be retightened at least twice at 30 N cm torque at a 10-min interval in all laboratory and clinical procedures. Kim KS1, Lim YJ, Kim MJ, Kwon HB, Yang JH, Lee JB, Yim SH. Variation in the total lengths of abutment/implant assemblies generated with a function of applied tightening torque in external and internal implantabutment connection. Clin Oral Implants Res. 2011 Aug;22(8):834-9. doi: 10.1111/j.1600-0501.2010.02063.x.