Implant-supported dental prostheses are considered an effective and predictable therapy for the rehabilitation of partially and fully edentulous patients (Bornstein et al., 2009). Many studies reported a high survival and success rates greater than 95% in medium and long terms (Iorio-Siciliano et al., 2015, however, titanium implants are not free of complications such as peri-implant mucositis (PM) and peri-implantitis (Daubert et al., 2015;Papathanasiou et al., 2016). PM is an inflammatory lesion in the soft tissues around dental implants without peri-implant bone loss caused by biofilm accumulation in peri-implant sulcus Pontoriero et al., 1994;Salvi et al., 2012). Clinically, this inflammation is characterized by bleeding on probing, erythema, swelling, and suppuration without PD increase (Renvert et al., 2018). Although the inflammation affects the peri-implant soft tissues, an untreated PM may determine an irreversible marginal bone loss (Costa et al., 2012;Schwarz et al., 2018) and for this reason it is considered the