The menace of antibiotic resistance has had robust relevance recently. This concern has led to the creation of public policies and alternative antimicrobial management. 1 Contrariwise, less consideration has been assumed to the directly interconnected trouble of resistance regarding antiseptics. 1,2 This is noteworthy because microbial resistance to antiseptics such as benzalkonium chloride and biocides (triclosan, chlorhexidine, and cetylpyridinium chloride), including the induction of cross-resistance between them and some antibiotics, has long been recognized in the medical management of different diseases. 3,4 These antiseptics have also been widely used in dentistry as oral rinses and gels, including oral care formulations. The use of antiseptics has also been extended to improve the oral hygiene conditions of hospitalized patients. 5,6 Thus, present protocols of prevention in dentistry are pointed at decreasing dental biofilm in an attempt to diminish the occurrence of periodontal diseases and caries. 7 On the

To evaluate the prevalence and proportions of bacteria resistant to oral antiseptics used in hospitalized patients. Methods and results: A review of randomized clinical trials (RCTs) was led by implementing the PRISMA extension for scoping reviews including various databases. MeSH terms and keywords were used to assess only RCTs with antiseptic-resistant outcomes. Fourth RCTs met the selection criteria. These trials studied 399 hospitalized patients for respiratory infections or cardiovascular disease. Methicillin-resistant Staphylococcus aureus and Acinetobacter baumannii were predominant pathogens in the chlorhexidine group. It was found that Veillonella parvula and Campylobacter gracilis (57% of the isolates) had resistance to triclosan, while 67% of Pseudomonas, Acinetobacter, and Enterobacter species presented resistance to chlorhexidine. However, an increase in minimal inhibitory concentrations of triclosan or chlorhexidine during the follow-up period was not observed. Moreover, chlorhexidine reduced the amount of S. aureus in dental plaque and the oropharyngeal colonization by aerobic microorganisms; nonetheless, it was unsatisfactory to decrease the occurrence of respiratory infections. No adverse events were reported.Conclusions: Resistance of V. parvula and C. gracilis to triclosan, and Pseudomonas, Acinetobacter, and Enterobacter species to chlorhexidine were perceived. However, these resistances did not increase during the follow-up period.