Clinical and radiographic outcomes of implants with two different collar surfaces in treated periodontitis patients. A 10-year retrospective study

The aim of this retrospective study was to compare clinical and radiographic results of implants with and without laser-microtextured collar placed in patients with a past history of periodontitis after 10 years observation time. A total of 57 implants (29 implants with laser-microtextured collar and 28 implants with smooth collar) were placed in 35 patients. After 10 years follow-up the survival rates (SR)was 87.9% and 84.8% for implants with and without laser-microtextured collar. No statistically significant differences (P>0.05) were found between groups in terms of full-mouth plaque score (FMPS) and full-mouth bleeding score (FMBS), meanwhile a statistically significant difference (P<0.05) was recorded in terms of probing depth (PD) marginal bone loss (mBL).Within the limitations of this study implants with laser-microtextured collar and implants with smooth collar placed in patients with past history of periodontitis yielded not statistically significant difference in terms of SR after 10 years follow-up. However, implants with laser-microtextured collar showed lower PD and mBL when compared with implants with smooth collar.