Many people think that teeth can never be whitened again after they have been bleached. But this is not true. If you want to have your teeth whitened again, you should go to the dentist first. They will be able to tell if your teeth are healthy enough to withstand the whitening process. If they are, then you can whiten your teeth again.

Yes, it is possible for a person to have yellow teeth and for them to become white naturally. It can happen if a person has an unhealthy diet or is suffering from tooth decay. It is best to visit a dentist to have your teeth professionally whitened. This can be done at a very low cost.

Yes, teeth can turn from yellow to white. This is caused by a buildup of plaque on your teeth. The more plaque that builds up on your teeth, the harder it becomes to clean the teeth. When plaque builds up on your teeth, the bacteria in the plaque produce acids. These acids eat away at the enamel of your teeth, causing them to become stained. Plaque can build up on your teeth in a number of different ways. For example, if you brush your teeth incorrectly or don't brush your teeth often enough, plaque will build up on your teeth. To remove plaque, use a toothbrush that has soft bristles and brush your teeth for two minutes twice a day.

A professional whitening treatment costs about $100. However, this will last for about six months. This means that you will have to go in for a whitening treatment every month for six months in order to keep your teeth white. But the results are worth it. You will notice the difference in just a few days. A professional whitening treatment will make your teeth whiter than they ever were before. So it is well worth it to have a professional whiten your teeth.