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===2019: [https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6888580/ Influence of Electronic Cigarettes on Selected Antibacterial Properties of Saliva]=== | ===2019: [https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6888580/ Influence of Electronic Cigarettes on Selected Antibacterial Properties of Saliva]=== | ||
*Lowering the level of IgA in saliva may lead to a weakening of the specific immune response and cause earlier development of more severe periodontitis. In our research, it was observed that the tobacco smokers’ level of salivary IgA was statistically significantly lower in comparison to the values in both the control group and the group of e-cigarette users. IgA content in the saliva of e-cigarette users was not statistically significant lower compared to the control group. This indicates that electronic cigarettes compared to traditional cigarettes have less effect on IgA concentration in saliva. | *Lowering the level of IgA in saliva may lead to a weakening of the specific immune response and cause earlier development of more severe periodontitis. In our research, it was observed that the tobacco smokers’ level of salivary IgA was statistically significantly lower in comparison to the values in both the control group and the group of e-cigarette users. IgA content in the saliva of e-cigarette users was not statistically significant lower compared to the control group. This indicates that electronic cigarettes compared to traditional cigarettes have less effect on IgA concentration in saliva. | ||
===2019: [https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6722047/ A lower impact of an acute exposure to electronic cigarette aerosols than to cigarette smoke in human organotypic buccal and small airway cultures was demonstrated using systems toxicology assessment]=== | |||
*Overall, the study demonstrated that exposure to undiluted test mix or base EC aerosols under the testing conditions (an acute 28-min exposure), even at a deposited nicotine concentration that is 200 times greater than that found in the saliva of EC users, had no impact on morphology of buccal and small airway cultures. In contrast, following the same puff number, the already diluted 3R4F CS resulted in overt tissue damage. | |||
*The study was funded by Philip Morris International. The MarkTen® EC devices were manufactured and provided by Altria Client Services LLC. All authors are paid employees of Philip Morris International R&D, or Altria Client Services LLC. | |||
===2019: [https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6949915/ A Comparison of Flavorless Electronic Cigarette-Generated Aerosol and Conventional Cigarette Smoke on the Planktonic Growth of Common Oral Commensal Streptococci]=== | ===2019: [https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6949915/ A Comparison of Flavorless Electronic Cigarette-Generated Aerosol and Conventional Cigarette Smoke on the Planktonic Growth of Common Oral Commensal Streptococci]=== | ||
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