Compare the Difference in Occlusal Force Distribution and Denture Retention Using 2 Different Denture Base Materials in Implant Retained Overdenture

The global increase in the aging population has led to a rise in total edentulism, which remains a major public health concern. two-implant-retained mandibular overdentures have been regarded as the standard of care, offering superior retention, stability, comfort, and masticatory efficiency compared to conventional dentures. Among available attachment systems-bar, ball, stud, and magnet-the Equator attachment has gained popularity due to its low vertical profile, suitability for limited inter-occlusal space, and ease of handling. Assessment of masticatory performance and occlusal balance can be objectively measured using devices such as bite force analyzers and the computerized T-Scan system, which quantifies occlusion and disocclusion times. Conventional heat-cured polymethyl methacrylate (PMMA) remains the most widely used denture base material; however, it has mechanical and biological limitations. Flexible denture base materials have been introduced to overcome these drawbacks by enhancing adaptation, distributing occlusal loads more evenly, and improving comfort and retention.

NCT Number	NCT07250503
Lead Sponsor	Al-Azhar University
Conditions	Edentulous Alveolar Ridge In Mandible, Complete Edentulism, Dental Implant, Attachments, Implant Retained Overdenture, Edentulous Mouth
Enrollment	24 participants
Start Date	2024-09-01
Primary Completion	2026-01-01 (estimated)
Study Completion	2026-02-01 (estimated)
Updated on ClinicalTrials.gov	2025-11-26