LAUSR

The 4.5-mm-wide implant introduced in 2011 had larger bone-toimplant contact surface compared with the 3.75-mm-wide implants, and has been shown superior in terms of higher implant stability quotient (ISQ). Although implant survival of the 4.5-mm-wide implant is high, differences in survival have not been found when compared with 3.75-mm-wide implant. Striving to decrease adverse skin reactions and improve skin sensitivity, the linear incision technique with soft tissue reduction (LIT-TR) was modified into a linear incision technique with soft tissue preservation (LIT-TP), demonstrating more favourable results regarding skin sensitivity and cosmetic outcomes. Although short-term outcomes are favourable, limited data is available on long-term outcomes of the 4.5-mm-wide implant and concomitant surgical techniques. This study compares 5-year clinical outcomes of a 4.5-mm-wide implant and a 3.75-mm-wide implant. Furthermore, 5-year outcomes of the LIT-TP and the LIT-TR are compared.