Advantages of polymer post-and-core restorations: a new perspective on tooth rehabilitation using 3D technologies: a review

This review synthesizes current evidence on the use of 3D-printed polymer post-and-core restorations for rehabilitation of endodontically treated teeth. Based on a search of publications from 2021 to 2025 in PubMed, Scopus, Web of Science, CrossRef, DOAJ, Google Scholar, and eLIBRARY.RU, more than 50 records were screened. Fourteen articles were selected according to relevance, full-text availability, and clinical focus, including clinical observations, in vitro experiments, and systematic reviews. Studies have shown that additively manufactured polymer restorations are bio inert, corrosion resistant, and exhibit an elastic modulus comparable to dentin, thereby reducing the risk of root fractures commonly observed in metal and zirconia systems. High-precision digital modeling provides an accurate fit and reduces the extent of tooth preparation, preserving up to 25% of hard dental tissues. Optimized post-processing (ultraviolet curing in a nitrogen environment and polishing) decreases surface roughness and improves bonding. These advantages, combined with a 40%–60% reduction in laboratory time and approximately one-third lower treatment cost, support the economic feasibility of the approach. Clinical case series with five-year follow-up demonstrate restoration stability without signs of failure or decompensation and with maintained function. Limitations include the need for expensive equipment, high energy consumption, and a shortage of clinical trial data. The findings suggest that polymer 3D-printed post-and-core restorations are a promising alternative to conventional systems; however, their reliability requires confirmation in expanded clinical studies with follow-up beyond five years.