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When the harvested leaves are cured and dried, compounds within them are converted into tobacco-specific nitrosamines (TSNAs), a class of well-known and intensely studied carcinogens

The filter system consists of a pre-filter and a main filter to trap smoke, dust, and pollen, combined with an activated carbon filter to neutralize smoke and other odors

The current study The present study systematically reviewed existing research to assess the relationship between e-cigarette use and periodontal health

Even without symptoms, professional examinations can detect early periodontal changes that are invisible to the untrained eye

[116] It is based on the election results on November 5, 2019, the Proposition C was defeated