Though teeth whitening seems to be a relatively new practice with whitening treatments involving gel and heat lamps or special toothpastes, its history is as long as the history of a man and quite different: people have always known that teeth are more than for just chewing and before speech there has always been the universal language, the smile.
Kuigi hammaste valgendamine tundub olevat tekkinud tänapäeval- valgendamise geelid ja lambid või spetsiaalsed hambapastad, siis selle ajalugu ulatub väga kaugele ning on päris erinev: inimesed on alati teadnud, et hambad on rohkemat kui lihtsalt närimiseks. Ning enne kõnet on alati olnud universaalne keel- naeratus.