Investigation of Color and Microhardness Changes in Direct, Indirect, and 3D-Printed Composites
Makaleler > Tam Makale · 2025
Yazarlar: Aleyna Sena Ekmekçi, Tijen PAMİR, Cem PEŞKERSOY, Hande KEMALOĞLU
INTERNATIONAL ARCHIVES OF DENTAL SCIENCES, Uluslararası, 2025, cilt 46, ss 179-188
Özet
INTRODUCTION: The aim of this study was to determine the surface hardness and color changes of resin composites produced for direct, indirect, and 3D printing applications.MATERIAL and METHODS: Forty-five samples with a diameter of 9 mm and a thickness of 3 mm were prepared.After polymerization, the samples underwent ultrasonic cleaning, polishing, and coloring procedures.Microhardness measurements were taken using a Vickers microhardness device, and color change parameters were determined using a spectrophotometer.The data were statistically evaluated using ANOVA for repeated measurements.RESULTS: Significant differences were found in microhardness measurements among the three different composite resin groups after initial, ultrasonic cleaning, polishing, and coloring procedures (p < 0.05).However, there was no significant difference in microhardness measurements between the initial and ultrasonic cleaning stages (p > 0.05).Microhardness values differed significantly after polishing and coloring (p < 0.05).Orange juice did not cause a significant color change (∆E) in any of the restorative materials (p >0.05), while significant color change (∆E) was found in samples exposed to coffee after orange juice (p <0.05).CONCLUSION: The color and microhardness of all used composites were affected by polishing and coloring procedures, with varying effects observed for each material.