Gastroesophageal reflux disease (GERD) is a condition where acid contents of the stomach are regurgitated into the oral cavity, which results in continual exposure of the teeth to these acids. Knowledge of the relationship between GERD and dental erosion enables the appropriate diagnosis and treatment of the underlying medical condition as well as the affected teeth. This article details a case report where severe dental erosion was present due to GERD. After management of the disease, treatment (i.e., diagnosis, treatment planning, and restoration) of the eroded dentition is described.