A study was conducted to evaluate the basic mechanical properties of a pure cellulose nanofiber (CNF) material in comparison with a commercial denture base material (polymethylmethacrylate [PMMA] acrylic resin). The working hypothesis was that CNFs have potential for use as denture base materials. Pure CNF specimens fabricated under various conditions were examined. The flexural strength (FS) and flexural modulus (FM) of the specimens were measured using the three-point bending test, and the morphologies of the fractured surfaces were examined using scanning electron microscopy. Addition of tricalcium phosphate to dehydrate the CNFs did not improve their FS or FM. Conversely, substitution with methanol effectively improved the dehydration process and significantly affected the mechanical properties of the CNFs. As the degree of CNF defibration increased, the physical properties of the specimens improved significantly. However, addition of CNFs to PMMA liquid to create CNF-reinforced PMMA did not improve the mechanical properties. Pure CNF specimens fabricated under particular conditions had higher FS and FM values than the control, suggesting that CNFs have potential as a “petroleum-free” alternative to acrylic resin denture base materials. Pure CNF would be potentially useful as a denture base material, and presumably applicable to computer-aided design/manufacture (CAD/CAM).

进行了一项研究，以评估纯纤维素纳米纤维（CNF）材料与商用义齿基托材料（聚甲基丙烯酸甲酯[PMMA]丙烯酸树脂）的基本机械性能。可行的假设是CNF具有用作义齿基托材料的潜力。检查了在各种条件下制造的纯CNF标本。使用三点弯曲试验测量样品的弯曲强度（FS）和弯曲模量（FM），并使用扫描电子显微镜检查断裂表面的形态。加入磷酸三钙使CNF脱水并不能改善其FS或FM。相反，用甲醇取代可有效改善脱水过程，并显着影响CNF的机械性能。随着CNF解纤度的增加，样品的物理性能显着改善。但是，将CNF添加到PMMA液体中以生成CNF增强的PMMA并不能改善机械性能。在特定条件下制造的纯CNF标本具有比对照更高的FS和FM值，这表明CNF作为丙烯酸树脂义齿基体材料的“无石油”替代品具有潜力。纯CNF可能作为义齿基材使用，并可能适用于计算机辅助设计/制造（CAD / CAM）。在特定条件下制造的纯CNF标本具有比对照更高的FS和FM值，这表明CNF作为丙烯酸树脂义齿基体材料的“无石油”替代品具有潜力。纯CNF可能作为义齿基材使用，并可能适用于计算机辅助设计/制造（CAD / CAM）。在特定条件下制造的纯CNF标本具有比对照更高的FS和FM值，这表明CNF作为丙烯酸树脂义齿基体材料的“无石油”替代品具有潜力。纯CNF可能作为义齿基材使用，并可能适用于计算机辅助设计/制造（CAD / CAM）。