Scientific Rationale: When the mouth falls open during sleep, it narrows the respiratory airways, which reduces the level of ventilation received through the nose. In addition, mouth breathing can result in alterations of saliva-mediated defense and reduced self-cleaning effect of saliva, which leads to the acceleration of accumulated plaque. In addition, the decrease of epithelial cells that can defend against plaque and the dehydration of the gingival surface result of the airflow can also contribute to the development of gingivitis and other periodontal diseases. As a result, mouth taping can help decrease snoring, help improve the health of the oral cavity and lead to a better night of rest.