Both types require professional treatment for effective removal, but tar stains on teeth tend to respond more readily to scaling and polishing, while nicotine stains on teeth penetrating the enamel require whitening agents to oxidize and break down the embedded pigment
Smoke Rings: Take a big drag, open your mouth in an O shape, and puff out sudden bursts of smoke in with a sharp huh exhale
Long-lasting effect: Extra strong pouches maintain a consistent nicotine and flavour release for up to 45 minutes
Smoking also reduces the number of cilia in your lungs, leaving fewer to properly clean them
Hornsey et al., 2018), agent-based models (de Koning and Filatova, 2020), and Adaptive Choice-Based Conjoint Analysis models (Ronda et al., 2021