Recently, a number of British dental experts published a paper in the oral medicine journal "Dental Clinical Experimental Research" pointed out that electronic cigarettes almost will not cause yellow teeth, smokers to switch to electronic cigarettes can effectively improve the oral environment.

According to the paper's analysis, 27 relevant studies around the world confirmed this conclusion. Among them, the tar produced when cigarettes are burned can "cause dramatic changes in tooth color," and there are 11 dyeing compounds in cigarette smoke that continue to damage tooth enamel and aggravate the tooth yellow problem. Even smokers who change their dentures do not help.

In contrast, all evidence confirms that e-cigarettes have significantly lower levels of tooth staining than cigarettes. "Because e-cigarettes do not burn, they do not produce those stained particles in cigarette smoke, so they do not excessively damage tooth enamel and make teeth yellow." The impact of e-cigarettes on denture materials such as resin composites is even more minimal." "The authors wrote in the research paper.

In addition to the smaller impact on tooth color, in recent years, a number of studies have confirmed that e-cigarette users have a much lower risk of periodontal disease than smokers, and the oral environment will be effectively improved after smokers switch to e-cigarettes. In March 2023, a study published by Qilu University of Technology (Shandong Academy of Sciences) showed that compared with cigarettes, e-cigarettes are less harmful to smokers' oral health and may be less likely to cause periodontal related oral diseases. At the same nicotine concentration, the apoptosis rate of human gingival epithelial cells exposed to cigarette smoke agglutinates was 26.97%, which was 2.15 times that of e-cigarettes.

One of the study authors, Philip M. reshaw, director of the School of Dentistry at the University of Dundee, UK, pointed out as early as 2019 that e-cigarettes could be used to treat oral diseases: "There is increasing evidence that e-cigarettes can effectively help smokers quit smoking, and for smokers with periodontal disease, quitting smoking can improve their oral health by at least 30%." In a research paper published in 2019, he suggested that dentists offer e-cigarettes to smokers with periodontitis to improve their success rate in quitting.

"We hope that dentists can put aside their prejudices and learn more about e-cigarettes, especially the positive effects of e-cigarettes on the oral health of sick smokers." British dental expert R. Holliday said: "Because the vast majority of patients with oral diseases are already smokers, if you are a dentist, your smoker patients want to use e-cigarettes to help quit smoking, please do not stop him."