The media are finally beginning to inform the general public that they are at risk for dental erosion as a result of the foods and the beverages they consume. Dental erosion or erosive tooth wear not only can be caused by extrinsic (dietary) acids but also intrinsic acids. Historically, anorexic and bulimic patients have been the population dentists have had to be aware of, but with the increasing prevalence of gastroesophageal reflux disease (GERD) in the general population, another population must be monitored. Tooth wear is usually multifactorial, and it is often difficult to assign a specific etiology; abrasion, attrition, and erosion must all be considered as potential etiologies. This critical appraisal reviews four articles looking at dental erosion and its relationship with GERD.