Foods containing flour and sugar component is caused by bacteria, which is acid if any of the teeth touch the acid for a long time or frequently treats, and decayed tooth will.
Foods that contain sugar, starch and are digested by bacteria which cause acid if exposed teeth acid prolonged or frequent skin teeth is worn and weathered.
Foods that contain starch and sugar will be digested by bacteria causes acid if the teeth touching the acid for a long time, or often, skin teeth will feel and decay.