Romanian Journal of Oral Rehabilitation Numarul 4 EVALUATION OF TRANSLUCENCY AND FLEXURAL STRENGTH IN DIFFERENT ZIRCONIA SYSTEMS FOR OPTIMIZED DENTAL RESTORATIONS

EVALUATION OF TRANSLUCENCY AND FLEXURAL STRENGTH IN DIFFERENT ZIRCONIA SYSTEMS FOR OPTIMIZED DENTAL RESTORATIONS

Mark Sallai, Iustin Olariu, Teodora Olariu, Dana Emanuela Coț (Pitic), Răzvan Flueraș, Raluca Mioara Cosoroabă, Adela Boroghină, Emanuela Lidia Petrescu

DOI : 10.62610/RJOR.2024.4.16.69

Abstract

This study evaluates the flexural strength and translucency of three zirconia systems (UP-ST-COL, AI, and DT-3Dp) to determine their suitability for dental restorations under high occlusal forces. Selection criteria included yttria (Y₂O₃) concentration and translucency index, impacting both aesthetic appeal and material durability. Each system’s mechanical performance was assessed using a three-point bending test to record maximum fracture forces and corresponding displacement values. Results indicate an inverse correlation between translucency and flexural strength, with UP-ST-COL showing the highest resistance due to its lower translucency index. Fracture analysis revealed consistent connector-level failures across systems, with UP-ST-COL’s distributed fracture pattern suggesting enhanced durability for posterior applications. Findings emphasize the importance of balancing strength and aesthetics in material selection, particularly for restorations in load-bearing areas. Further studies are recommended to validate these results under clinical conditions.

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