RESUMO
Background: The popularity of e-cigarettes has increased rapidly in the last decade, particularly among teens andyoung adults, being advertised as a less harmful alternative to conventional tobacco products. However, in vitroand in vivo studies have evidenced a variable quantity of potentially harmful components and some recognizedcarcinogens which may cause DNA damage in oral cells. Additionally, evidence suggests that e-cigarettes mayplay active roles in the pathogenesis of other malignancies, such as lung and bladder cancers. Therefore, this rapidreview aimed to assess the available clinical evidence about using e-cigarettes as a risk factor for oral potentiallymalignant disorders (OPMD) and oral cancer.Material and Methods: A systematic search for English language articles published was performed in PubMed(MEDLINE), Embase, Scopus, and Web of Science. After the study selection process, the authors included twelveclinical studies about OPMD and oral cancer risk in e-cigarette users.Results: The main findings showed the presence of carcinogenic compounds in saliva and morphologic changes,DNA damage, and molecular pathways related to carcinogenesis in the oral cells of e-cigarette users. However,results were inconsistent compared to tobacco smokers and control groups.Conclusions: the current clinical evidence on this topic is limited and insufficient to support using e-cigarettes asa risk factor for OPMD and oral cancer. Nevertheless, dental care professionals should advise patients responsiblyabout the potentially harmful effects of e-cigarettes on the oral mucosa cells. Future long-term and well-designedclinical studies are needed.(AU)
