Evaluation of Locator Versus TITACH Attachment for Mandibular Overdentures.

Inclusion Criteria: * 1\) Complete edentulism with adequate residual alveolar bone quantity (height and width) and quality (density) at the area between the mental foramina (confirmed by cone beam CT, I -CAT, Pennsylvania, USA), 2) All patients had Angle's class I maxilla-mandibular relation with suitable inter-arch space (verified by a tentative jaw relation), and 3) All patients complained of inadequate retention and stability of their conventional mandibular dentures. Exclusion Criteria: * 1\) systemic conditions that impede Osseo-integration, such as uncontrolled diabetes, osteoporosis, and head and neck radiation, 2) hazardous behaviors such as smoking, bruxism, and drunkenness, 3) individuals with a history of persistent TMJ disorders or reduced neuromuscular control.