Aims: To characterize mutants of Staphylococcus aureus expressing reduced susceptibility to house cleaners (HC), assess the impact of the alternative sigma factor SigB on HC susceptibility, and determine the MIC of clinical methicillin-resistant S. aureus (MRSA) to a HC.

Through an extensive review of the literature, our objective will be to clarify the current concept that exists about the pathogenesis of peri-implantitis, as well as the implications that bacteria may have on it. To date, different longitudinal and cross-sectional studies have identified some of the risk factors or risk indicators of peri-implantitis. Previous history of periodontal disease, diabetes, genetic load, poor oral hygiene, tobacco, alcohol consumption, absence of keratinized gingiva and the surface of the implants are some of the factors that have been analyzed in detail in the literature. The colonization of new surgically implanted surfaces represents a risk situation in partially edentulous patients, where periodontopathogenic bacteria from the residual bag play an important role.