Comparative Analysis of the Physicochemical Properties of 3D-Printed and Conventional Resins for Temporary Dental Restorations

doi:10.3390/prosthesis7050129

Q2 · DentistryImpact Factor · 2.908

AutoresOscar Javier Valencia-Blanco, Esteban Pérez-Pevida, Daniel Robles, Enrique Montalvillo, Javier Gil, Aritza Brizuela‐Velasco

Por qué importa

Este estudio comparativo evalúa las propiedades fisicoquímicas de una resina convencional autocurable de dimetacrilato frente a una resina para impresión 3D destinada a restauraciones provisionales. Se analizaron la resistencia a flexión, microdureza y resistencia al desgaste, determinando que la resina impresa en 3D presenta un rendimiento mecánico superior en estas áreas. No obstante, su elevada absorción de agua se identifica como una limitación importante para el uso prolongado en ambientes húmedos, lo que podría afectar su durabilidad a largo plazo. Los resultados sugieren que, si bien la tecnología de impresión 3D ofrece avances en las propiedades mecánicas de los materiales provisionales, las resinas convencionales autocurables siguen siendo la opción preferente para aplicaciones que requieran una mayor durabilidad en el tiempo en la práctica clínica diaria.

Abstract original

Objective. The aim of this in vitro study was to compare the physical and mechanical properties of two resins used for provisional prostheses: a direct self-curing dimethacrylate resin and a 3D-printed resin, in order to assess their potential for different clinical applications. Methods. Flexural strength, microhardness, wear resistance, and water absorption were evaluated in accordance with ISO 4049 and ISO 10477. Samples were analyzed using scanning electron microscopy, X-ray spectroscopy, and mechanical testing, including flexural, wear, and scratch assays. Results. The 3D-printed resin demonstrated superior flexural strength (128 ± 2 MPa vs. 127 ± 16 MPa), microhardness (19.45 HV vs. 8.10 HV, p < 0.05), and wear resistance (mean wear area: 0.030 mm2 vs. 0.047 mm2) compared to the self-curing dimethacrylate composite. However, it exhibited significantly higher water absorption (55.98 µg/mm3 vs. 15.0 µg/mm3), which may compromise its long-term durability in humid environments. Conclusions. Overall, the 3D-printed resin shows promising mechanical performance, but its high-water absorption remains a limitation for extended use. Further studies are required to evaluate its degradation and behavior under intraoral conditions. Clinical relevance. For the time being, self-curing resins remain the preferred choice for long-term provisional prostheses.

Leer texto completo ↗DOI · 10.3390/prosthesis7050129

Autores Doctor&Cols

Cómo citar

Valencia-Blanco OJ, Pérez-Pevida E, Robles D, Montalvillo E, Gil J, Brizuela‐Velasco A. Comparative Analysis of the Physicochemical Properties of 3D-Printed and Conventional Resins for Temporary Dental Restorations. Prosthesis. 2025. doi:10.3390/prosthesis7050129