We generally anticipate a lifespan of 12-18 months. However, this can vary from MAD to MAD (thus, please always consult the relevant information provided on the respective product page). Additionally, the lifespan also strongly depends on the maintenance of, and the strain placed on the MAD: Incorrect maintenance (e.g., cleaning the MAD with toothpaste) can significantly shorten its lifespan. The same applies to bruxism – severe grinding or clenching of the teeth can also shorten the lifespan of the MAD.