My age is 27 female. As I have said in the before question my permanent teeth are yellow and the nature of teeth is soft. Can eat only soft foods. If I bite hard items then breakage occurs and pain also. Sometimes pain occurs in the whole teeth. Some root canals should be done for teeth. please can you suggest any treatment for teeth to be white. I don't have habits of smoking, drugs, tea, coffee etc. I am a vegetarian.