Teeth yellowning issue

This is for my son. He is 13 years old. His tooth is yellowish in color. I tried natural banana peel for whitening his teeth as my friend suggested. But nothing went well. Then I visited a dental clinic in Burlington [ ].The doctor suggested some natural methods such as,
1. Eat Crunchy Raw Fruits and Vegetables
2. Rinse with Apple Cider Vinegar
3. Brush Your Tongue
4. Rinse with Water After Eating Citrus Fruits
Then he advised that if these methods don't work, Whitening Trays and Gels will solve the issue. Has anyone used it? Is it really worthy?

Please Log in to reply