The damage to the protective enamel makes the teeth highly susceptible to decay, and more serious infections of the nerves within the teeth. The saliva producing (salivary) glands in the mouth can also become swollen due to frequent vomiting. This is most commonly seen in the parotid salivary glands that are inside the cheeks.
The dental effects of bulimia can be quite devastating. I have treated many young women and some men with this disorder. After all of the damaged teeth are repaired, I prescribe highly concentrated fluoride gels for the patient to brush with. The patient needs to keep his or her mouth as clean as possible by brushing and flossing several times a day. I like to see these patients every three to six months to monitor the condition of their mouths. If there is no significant improvement, I will make soft custom trays that cover the teeth. The trays are filled with fluoride and worn while the patient sleeps.