A bright, white smile makes us feel younger and at the same time helps to enhance the image of ourselves that we want to transmit to others. Dental whitening is a safe, reliable and effective option to radically improve the appearance of our smile. Whitening techniques activated by diode laser allow us, in a single action, to lighten the colour of our teeth and achieve that bright smile that gives us joviality and confidence. The diode laser for dental whitening is a fast, painless method with immediate results and minimal side effects (some patients may experience temporary sensitivity which can also be relieved by laser). If we are looking for a more aesthetic smile, with a high degree of patient-satisfaction, we must take into account whitening treatments. Among such treatments, the diode laser is one of the fastest, safest and most effective.