During a dental examination,the dentist notices that the enamel on the back sides of Andrew's teeth has eroded,and the some of the teeth are decaying.Based on this information,the dentist suspects that Andrew

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The erosion of enamel and tooth decay on the back sides of the teeth are classic signs of bulimia, a disorder characterized by frequent binge eating followed by purging through vomiting or other means. The stomach acid from repeated vomiting can damage the enamel on teeth and lead to decay. Therefore, option B is the best choice. A vitamin D deficiency disorder or excessive intake of dietary fiber are unlikely to cause these dental issues. While irregular brushing can contribute to tooth decay, it would not be limited to the back sides of the teeth.

During a Dental Examination,the Dentist Notices That the Enamel on the Back