Abdelfattah Mohamed Y, Al Humayyani Nouf, Alwthinani Fahad K, Alzahrani Abdulrahman H, Alotaibi Abdulmajeed O, Yousef Mohamed, Sayed Ahmed Akram, Ali Ahmed
Department of Prosthodontics, Faculty of Dentistry, Taif University, P.O. Box 888, Taif 21974, Saudi Arabia.
Department of Prosthodontics, Faculty of Dentistry, Tanta University, P.O. Box 31512, Tanta 31527, Egypt.
Saudi Dent J. 2024 Sep;36(9):1227-1232. doi: 10.1016/j.sdentj.2024.07.004. Epub 2024 Jul 3.
This laboratory research aimed to assess the Flexural strength, fracture toughness, Volumetric wear and optical properties of various recent 3D-printed denture tooth materials and compare them to CAD/CAM milled materials. Four 3D-printed denture tooth materials (Lucitone Tooth, OnX, Flexcera Ultra +, and VarseoSmile Crown Plus) and one CAD/CAM milled denture teeth material (Ivotion Dent) were used to fabricate fifteen specimens for each material (with total no. of 300 specimens). Tests were conducted according to ISO standards to assess flexural strength, fracture toughness, color staining, and volumetric wear. All materials were printed, washed, cured, or milled following the manufacturer's instructions. Flexural strength and fracture toughness values were obtained by a universal testing machine. Volumetric wear was evaluated using a non-contact optical profilometer. Color stability outcomes were obtained via a spectrophotometer for determining Lab* values, with color change (ΔE2000) based on the CIEDE2000 formula. Data were analyzed using one-way ANOVA and Tukey post-hoc analysis (α = 0.05). All 3D-printed materials exhibited higher flexural strength values than the milled material (p < 0.05). For fracture toughness, two of the 3D-printed materials showed higher values than the milled material, while the other two had lower values. Insignificant variances in volumetric wear were detected between the materials (p > 0.05). Color staining results varied, with milled materials generally demonstrating better-staining resistance compared to the 3D-printed materials. 3D-printed denture tooth materials exhibit good mechanical and optical properties, presenting a cost-effective and efficient alternative to CAD/CAM milled materials for denture tooth fabrication.
这项实验室研究旨在评估各种近期3D打印义齿牙齿材料的弯曲强度、断裂韧性、体积磨损和光学性能，并将它们与CAD/CAM铣削材料进行比较。使用四种3D打印义齿牙齿材料（Lucitone Tooth、OnX、Flexcera Ultra +和VarseoSmile Crown Plus）和一种CAD/CAM铣削义齿牙齿材料（Ivotion Dent），每种材料制作15个样本（共300个样本）。根据ISO标准进行测试，以评估弯曲强度、断裂韧性、颜色染色和体积磨损。所有材料均按照制造商的说明进行打印、清洗、固化或铣削。弯曲强度和断裂韧性值通过万能试验机获得。体积磨损使用非接触式光学轮廓仪进行评估。通过分光光度计获得颜色稳定性结果，以确定Lab*值，并根据CIEDE2000公式计算颜色变化（ΔE2000）。数据使用单因素方差分析和Tukey事后分析（α = 0.05）进行分析。所有3D打印材料的弯曲强度值均高于铣削材料（p < 0.05）。对于断裂韧性，两种3D打印材料的值高于铣削材料，而另外两种则较低。材料之间的体积磨损差异不显著（p > 0.05）。颜色染色结果各不相同，与3D打印材料相比，铣削材料通常表现出更好的抗染色性。3D打印义齿牙齿材料具有良好的机械和光学性能，为义齿牙齿制作提供了一种经济高效的替代CAD/CAM铣削材料的选择。
