Erosion is the non-carious loss of tooth enamel due to damage by extrinsic acids. Which one of the following medical conditions is most likely to be linked to tooth erosion?

Tooth erosion refers to the loss of tooth enamel through the action of acids that are not related to bacterial activity, and these acids can originate from external sources. Bulimia is specifically associated with repeated episodes of vomiting, which expose the teeth to gastric acids. This exposure can significantly contribute to the erosion of enamel, particularly on the lingual surfaces of the teeth.

Individuals with bulimia often experience frequent cycles of binge eating followed by purging, leading to increased contact between the teeth and acidic substances. Over time, this acid exposure can result in noticeable erosion, making this condition a key link to tooth erosion.

In contrast, the other conditions listed—coeliac disease, diabetes, and epilepsy—do not have a direct relationship with the extrinsic acid exposure that causes tooth erosion in the same way. Coeliac disease primarily affects nutrient absorption, diabetes can lead to dry mouth but does not cause direct acid damage to the teeth, and epilepsy may have implications for dental health but does not directly relate to tooth erosion from extrinsic acids.