Milk in tea will whiten teeth, says study
Posted on: 18/Aug/2015 10:21:11 AM
A paper published in the International Journal for Dental Hygiene has claimed that add a bit of milk to your tea will whiten your teeth. The study was conducted by researchers at the University of Alberta`s School of Dentistry.
They studied human teeth that have been extracted. Those that had fillings, signs of tooth decay or visible cracks and fractures were left out. The colour of the teeth were recorded and then they were put through a `staining process`. This consisted of putting some of the teeth in a solution of tea, and the others in a solution of tea with milk. The teeth were kept in their respective solutions for 24 hours at 37 degrees Celsius.
Say researchers, The results showed that casein is the component of milk that was responsible for the reduction of tea-induced staining. The magnitude of the colour change observed in our experiments is comparable to the colour change seen by vital bleaching products and more effective than whitening toothpastes.
