Clinical Evaluation of Conventional and 3D-printed Implant-supported Overdentures Retained With New Attachment Systems

Clinical Evaluation of Conventional and 3D-printed Implant-supported Overdentures Retained With New Attachment Systems

Randomized Crossover Clinical Trial Comparing Two Denture Designs (A and B) Retained by Two Locator Systems (ST and EMI) in Implant Overdenture Patients

This randomized crossover clinical trial evaluates patient-reported outcomes and clinical performance of implant overdentures (IODs) using two different denture designs (A and B) retained by two locator attachment systems: Locator ST and Locator EMI. Each participant will receive both denture designs in a crossover sequence, allowing direct within-subject comparison.

Inclusion Criteria:

• Completely edentulous patients
• Non-smokers
• Patients free from intra-oral diseases that may affect implant-overdenture prognosis
• Patients free from systemic conditions that may influence bone resorption or implant success
• Able and willing to comply with study visits and follow-up schedule

Exclusion Criteria:

• Smokers or tobacco users
• Presence of active oral lesions, infections, or mucosal pathology
• Systemic diseases affecting bone metabolism (e.g., uncontrolled diabetes, osteoporosis requiring bisphosphonates)
• History of head and neck radiation
• Severe parafunctional habits (e.g., bruxism)
• Inability to attend follow-up appointments or provide informed consent