Q. Hello Dr. Andrew; I want to carry out teeth whitening,but My teeth are seen to be cracked especially the two infront,on the upper jaw. the doctor said that i suffer from night teeth grinding and i wear a night guard which i really hate and feel uncomfortable with.I am 34 a mother of two 11 and 8years .I noticed this gringing habits only recently ,because before that my teeth are healthy. Now I highly like to whiten my teeth..but my Question is..is whitening cause more damage to my teeth or not ,if yes what is the best way to get back my smile. I higly appreciate your efforts of help and support.