Requirements of a Resilient liner

• They should be of a biological inert material that is compatible with the oral tissue and does not support bacterial or fungal growth.
• They should be resilient and capable of maintaining this characteristic - a 2 year period of service is usually expected from a resilient liner.
• After curing the liner should be dimentionally stable and insoluble in oral fluid to maintain proper tissue contact.
• They should be colour stable throughout their useful life, resistant to staining and impervious to odours
• Though flexible they should resist abrasion anf thereby allow the practice of proper hygiene of the fitting surface.
• On curing they should maintain their bond to the denture base without damaging it.
• The manufacturing process should be relatively easy, it is not essential for the liner to be chairside material.