A study undertaken by British American Tobacco has shown that teeth exposed to cigarette smoke over a period of 2 weeks became very discoloured very quickly, whereas teeth exposed to e-cigarette vapour or vapour from glo, a tobacco-heated product, did not (Figure 1). After 2 weeks of almost continuous exposure, these teeth were almost indistinguishable from teeth that were not exposed to anything at all.
Smokers get ‘stains’, turning teeth from a healthy-looking white to an unhealthy-looking yellow/brown colour. Although this staining is commonly referred to as nicotine staining, it is not caused by nicotine, but by tar in smoke.
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