Conversion Techniques for Immediate-Loading Interim Implant-Supported Complete-Arch Fixed Dental Prostheses...

Background/Objectives: Immediate-loading interim implant-supported complete-arch fixed dental prostheses (ISCFDPs) are widely used for immediate loading in edentulous patients. Although traditional denture conversion techniques are well established, newer systems aim to improve efficiency and prosthesis integrity. This clinical report aims to describe and compare four chairside conversion techniques for immediate-loading interim ISCFDPs. Methods: Four clinical cases were treated using different conversion techniques, including conventional denture conversion, guided conversion with static computer-assisted implant surgery (s-CAIS), and two closed-mouth pickup systems (SMART Denture Conversion and EasyPro). Clinical workflows, procedural characteristics, and prosthetic considerations were evaluated. Results: All techniques enabled the successful fabrication of immediate-loaded interim ISCFDPs. Conventional conversion was flexible and cost-effective but technique-sensitive and associated with increased risk of prosthesis weakening. Guided conversion improved structural integrity and reduced intraoral adjustment but required precise planning and higher costs. Closed-mouth systems preserved occlusion, minimized denture modification, and reduced chairside time, though they relied on proprietary components and had limited clinical evidence. Conclusions: Each conversion technique presents distinct advantages and limitations. Selection should be based on clinical conditions, available resources, and clinician experience. Further studies are needed to validate the long-term outcomes of emerging conversion systems.