From the makers of Efferdent denture cleanser. Extra strong holding power. Zinc free formula. ADA Accepted: American Dental Association. The ADA Council on Scientific Affairs' Acceptance of Effergrip Denture Adhesive is based on its finding that the product is effective as a temporary measure and may provide increased retention of complete dentures, when used as directed. Ill fitting dentures may impair teeth - consult your dentist as soon as possible. Council on Scientific Affairs, American Dental Association.