Digital-analogue approach in pier abutment: A case report and literature review

Abstract

This case report and literature review explores the challenges and solutions associated with the fabrication of long-span fixed partial dentures (FPDs) involving a pier abutment, where a non-rigid connector was employed. The study presents a detailed account of a 43-year-old female patient who required rehabilitation of an edentulous space using a 5-unit FPD with a non-rigid connector. The digitalization of the cast and the use of advanced scanning and designing tools for the fabrication process are discussed. The review highlights the critical factors affecting long-span bridges, including physiological tooth movement, arch position, and retentive capacity, emphasizing the importance of using non-rigid connectors to accommodate these dynamics. The discussion also covers various types of non-rigid connectors and different schools of thought regarding their application. The report concludes that the selection of the appropriate type of non-rigid connector, based on the clinical situation, is crucial for the success of the restoration, particularly when implant therapy is not feasible.