{"id":3030,"date":"2025-07-10T12:00:00","date_gmt":"2025-07-10T12:00:00","guid":{"rendered":"https:\/\/cicds.umfcd.ro\/?post_type=lucrari_cercetari&p=3030"},"modified":"2026-08-05T15:33:12","modified_gmt":"2026-08-05T15:33:12","slug":"influence-of-the-processing-method-on-the-nano-mechanical-properties-and-porosity-of-dental-acrylic-resins-fabricated-by-heat-curing-3d-printing-and-milling-techniques","status":"publish","type":"lucrari_cercetari","link":"https:\/\/cicds.umfcd.ro\/en\/lucrari_cercetari\/influence-of-the-processing-method-on-the-nano-mechanical-properties-and-porosity-of-dental-acrylic-resins-fabricated-by-heat-curing-3d-printing-and-milling-techniques\/","title":{"rendered":"Influence of the Processing Method on the Nano-Mechanical Properties and Porosity of Dental Acrylic Resins Fabricated by Heat-Curing, 3D Printing and Milling Techniques"},"content":{"rendered":"
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Influence of the Processing Method on the Nano-Mechanical Properties and Porosity of Dental Acrylic Resins Fabricated by Heat-Curing, 3D Printing and Milling Techniques<\/h1>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t
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Imre, M.; \u0218aramet, V.; Ciocan, L.T.; Vasilescu, V.-G.; Biru, E.I.; Ghitman, J.; Pantea, M.; Ripszky, A.; Celebidache, A.L.; Iovu, H.<\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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Dentistry Journal 2025, 13, 311.<\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t

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Background: Acrylic resin-based materials are a versatile category used extensively in various dental applications. Processed by current modern technologies, such as CAD\/CAM technologies or 3D printing, these materials have revolutionized the field of dentistry for the efficient creation of dental devices. However, despite their extensive use, a limited number of comparative studies exist that investigate how different processing methods\u2014such as traditional techniques, 3D printing, and CAD\/CAM milling\u2014impact the nano-mechanical behavior and internal porosity of these materials, which are critical for their long-term clinical performance. Objectives: The purpose of this study is to evaluate the nanomechanical properties (hardness, elasticity, and stiffness) and micro-porosity of acrylic resin-based materials indicated for temporary prosthodontic appliances manufactured by new technologies (milling, 3D printing) compared to traditional methods. Methods: The hardness, elasticity, and stiffness measurements were performed by the nano-metric indentation method (nanoindentation), and the quantitative morphological characterization of the porosity of the acrylic resin samples obtained by 3D printing and CAD\/CAM milling was performed by micro-computed tomography. Results: According to nanomechanical investigations, CAD\/CAM milling restorative specimens exhibited the greatest mechanical performances (E~5.233 GPa and H~0.315 GPa), followed by 3D printed samples, while the lowest mechanical properties were registered for the specimen fabricated by the traditional method (E~3.552 GPa, H~0.142 GPa). At the same time, the results of porosity studies (micro-CT) suggested that 3D printed specimens demonstrated a superior degree of porosity (temporary crown\u201422.93% and splints\u20148.94%) compared to CAD\/CAM milling restorative samples (5.73%). Conclusions: The comparative analysis of these results allows for the optimal selection of the processing method in order to ensure the specific requirements of the various clinical applications.<\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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acrylic resins; computer-aided design; computer-aided manufacturing; 3D printing; nanoindentation; nano-mechanical properties; porosity<\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t

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\n\t\t\t\n\t\t\t\t\t\t\n\t\t\t\t\t\t\n\t\t\t\t<\/path><\/svg>\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\tRead the paper online<\/span>\n\t\t\t\t\t<\/span>\n\t\t\t\t\t<\/a>\n\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t
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