Stomatological manifestations of psychosomatic diseases can be associated, culminating in advanced oral alterations. These psychosomatic changes have also increased during the COVID-19 pandemic. In this perspective, parafunctional habits, such as bruxism and clenching, and gastro-oesophageal reflux disease can develop major dental destruction. Thus, various types of treatment are required in the rehabilitation of these patients. The purpose of this article is to present the case of a patient who developed severe tooth wear due to the association between gastro-oesophageal reflux disease and bruxism, during the COVID-19 pandemic. The patient was treated with a bite raising, direct composite restorations and removable prostheses.