Scientifi c evidence showed variable degree of marginal bone loss around
dental implants both during integration process and during function. Among the dif
ferent factors that seem to infl uence this process, a crucial role is up to the crestal
module of dental implant. In order to reduce marginal bone loss, diff erent confi gura
tions of crestal module have been proposed. Th e aim of this study was to evaluate the
effi cacy of half treatment dental implants with a coronal smooth portion of 3.5 mm
compared to rough surfaced implants with a smooth coronal portion of 0.5mm, to
reduce peri-implant marginal bone resorption. Th e degree of marginal bone loss was
assessed through radiological measures. In addition, soft tissues healing was evaluat
ed through plaque index and gingival index. Th e results demonstrated a signifi cantly
(p= 0.03) lower value of MBL (mean 0.7mm), than HT implants (mean 1.03mm) aft er
1year functional loading. In conclusion, use of FT implants could be determine better
results in order to reduce MBL.