Schwarz F, et al. - This study encompassed an evaluation of the onset, progression and resolution of experimentally induced peri-implant mucositis lesions at abutments with varying microstructures in humans. Both the study groups illustrated comparable levels of onset, progression, and resolution of peri-implant mucositis lesions. Its incidence, however, appeared to be substantially lower at control abutments after a nonsurgical treatment and reconstitution of oral hygiene measures at RPw16.