Tooth wear is a dental condition where the surface and structure of teeth are progressively reduced as a result of internal and or external forces placed upon them. When hard tooth material is worn away as a result of teeth grinding and or clenching it is called attrition. The extent of the damage depends on the amount of grinding and is typically more severe in individuals who exhibit this behavior in their sleep. The reduction of hard tooth material due to chemical forces is called a arosian. Arosian can be caused by drinking acidic beverages, like soda or by medical conditions like acid reflux and bulimia. Overtime this acid dissolves the outer enamel of the teeth and can expose the softer underlying dentin layer. Wear caused by an outside object is called abrasion. Abrasion can be caused by improper tooth brushing technique, excessive use of toothpicks and the use of the teeth as a tool. It can result in grooves and notches in the enamel and dentin. Excessive tooth wear can cause many oral health complications including unattractive and irregular tooth levels, jagged and sharp teeth edges, tooth pain and eventual loss of the teeth altogether. As the harder outer surface of the tooth is worn away, the softer dentin will be exposed speeding up the process. There are preventative and corrective treatment options for patients experiencing tooth wear issues. Treatments will vary based on the cause of wear and when it is detected; making it critical to work closely with your dentist to proactively treat the issue before more damage is sustained.