The issue of retreivability is still an ongoing problem of cement retained implant restorations. This book describes a novel method of how to control the retention forces of the implant superstructures by four factors. Effect of Sandblasting, Abutment Materials,Abutment Lengths and finally the Cement Type. Each factor was tested alone and with other factors. A novel approach for statistical analysis were used to analyse the 16 groups of the project. The results of the study revealed a significant effect of the four factors on the cement retention forces and also revealed a different outcomes...