Your smile is one of the first things that makes an impression when you meet people. The colour, shape or even arrangement of your teeth can affect your confidence, and that’s why so many people are willing to save up and spend so much on getting their dental issues fixed.One of the most popular treatments is teeth whitening. We spoke to Dr Aodhan Docherty, head of research and development at Australian teeth-whitening brand White Glo, to find out more.