Inclusion Criteria:  patients requiring new removable complete dentures, with class I edentulous arches based on the American College of Prosthodontists (ACP) classification15, with an average age of 45-55 years old, with healthy temporomandibular joint, being without systemic disease that could affect the neuromuscular control or salivary flow  Exclusion Criteria:  Patients with ACP Class II, III, or IV, and xerostomia.