WASHINGTON: E-Cigarettes and tobacco heating products cause significantly less staining to teeth than conventional cigarettes, a recent study has suggested.
In a part of the study conducted at British American Tobacco, scientists assessed and compared a novel e-cigarette (EC), a tobacco heating product (THP) and a conventional cigarette for their impact on teeth enamel staining.
While cigarette smoke caused significant enamel discoloration, vapour from the EC and aerosol from the THP caused only minimal staining. The results are published in the American Journal of Dentistry.
These next-generation products (NGPs) do not involve combustion; the vapour and aerosol they produce are less complex and contain significantly lower levels of certain toxicants compared to cigarette smoke.
It is well known that smoking cigarettes cause stains on teeth that cannot easily be removed by regular brushing, but little is known about such effects from NGPs. So scientists conducted vitro teeth staining studies to compare the effect of an EC, BAT’s THP glo, and a reference cigarette (3R4F).
Tests were carried out on enamel blocks cut from bovine incisors. To mimic conditions in the mouth, the enamel blocks were first incubated with saliva to allow the formation of a pellicle layer, a protective protein film that normally forms on teeth. The enamel blocks were exposed to the particulate matter (isolated from the smoke/vapour) for 14 days and the whole smoke/vapour (equivalent to one pack of cigarettes per day) for 5 days.