Canullo L, et al. – The present investigation was designed to evaluate the 6–year radiographic changes around customized platform–switched abutments placed according to the one abutment–one time concept, with and without plasma of argon cleaning treatment. This randomized, match–paired, triple–blinded, controlled clinical trial suggested that contaminant and bacterial removal from abutments in two–stage implants using plasma of argon could represent a positive strategy to reduce peri–implant bone resorption and longitudinally stabilize esthetic outcomes.