Apparently, every branch of science is curious about these new-fangled e-cigarette thingies. Dental researchers are planning to take a look at the impact of e-cigarettes long before they hit the airway. Specifically the group hopes to take a look to see what sort of stuff gets absorbed in the mouth as compared to what smokers absorb.
Each nicotine cartridge in an e-cig can provide 200 to 400 puffs, equivalent to two to three packs of cigarettes. “Due to the frequency of puffing, depth of inhalation, and length of vaping,” says Li, “e-cig users may actually absorb higher concentrations of nicotine and other toxins than conventional tobacco smokers.
Since the initial interaction of nicotine from e-cigs with the human body occurs first in the oral cavity, Saxena and Li will collect saliva and oral mucosa from College of Dentistry patients who are e-cig users to determine the relative abundance of oral bacteria and changes in DNA in these patients in order to compare them with the effects found among conventional cigarette smokers.
I'm not exactly sure how e-cigarette users are supposed absorb higher concentrations of toxins that aren't actually in e-cigarette vapor, but whatever. It's like there's some sort of prize for whatever researcher comes up with the next crazy theory about how e-cigarettes are somehow worse than the deadliest consumer product ever invented. That prize is, of course, grant money I'd imagine.