Saliva is a complex fluid composed of secretions from salivary glands and gingival crevicular fluid. The oral cavity is a moist environment; a film of fluid called saliva constantly coats its inner surface and occupies its space between the lining oral mucosa and teeth, whose important role is maintaining the well being of the mouth. Saliva plays a critical role in the maintenance of oral and dental health. Saliva is most valuable oral fluid that is taken for granted. Knowledge of the salivary system and saliva is essential for evaluating prosthodontic problems and for educating patients in what to expect in this phase of denture use.
Saliva, complete denture, retention.