Hi doc, I was told by a dentist during scaling session that I have cavities and I should go for tooth filling. After knowing that I changed my toothpaste from patanjali to sensodine repair and protect toothpaste which have 927 ppm florida (but for that I did not take any advice from dentist) after using this fluoride toothpaste for 3 to 4 days some brown texture appeared on my back of teeth which has cavities already. Now I am afraid is it dental fluorosis or demineralisation or effect or scaling. Olz guide me.