When a patient's gums, tongue, or cheeks are sensitive to pressure from their dentures, the dentist may recommend a softer lining material. By incorporating a pliable lining material, dentures can better conform to the gum tissue beneath them. The soft, resilient denture lining material acts as a shock absorber, spreading the force out over a larger area and protecting the underlying tissue from damage. Over time, soft liners have become the standard for easing denture discomfort. Soft liners are used commonly by individuals who are unable to wear a traditional denture base. So mechanical properties of lining materials need to be improve by many methods, one of them adding nanomaterials.