Eating disorders such as bulimia nervosa can have a significant impact on the structure of the teeth. Gastric acid not only causes enamel and dentin to dissolve but also causes a progressive deterioration of dental health, which leads to functional esthetic and biological consequences. According to the classic concepts of restorative dentistry, the rehabilitation of such clinical cases will involve numerous full crowns and root canal treatments, a process which is expensive financially, biologically, and in terms of time. However, the development of resin composite and adhesive systems has made it possible, today, to reconstruct teeth with minimal dental preparation. This article will look at the dental treatment of a bulimic patient who had numerous serious erosions with a significant loss of dental tissue. All teeth were reconstructed with a nano-hybrid resin composite and, as very little preparation was necessary, the teeth's vitality was maintained and did not require laboratory collaboration. Furthermore, all biological, functional, and esthetic requisites were successfully met in a very short period of time.