Holds strong for extra confidence. ADA Accepted (American Dental Association). Rigident is scientifically formulated to help keep your dentures tight and comfortable. Clinical tests prove Rigident strengthens and increases denture hold. Rigident Powder is accepted as a temporary measure and may provide increased retention of complete dentures. However, ill-fitting dentures may impair your health - consult your dentist as soon as possible. Council on Scientific Affairs. Made in Italy.