Enhancing the performance of dental composites with nanomaterial reinforcements via stereolithographic additive manufacturing

IF 4.1 3区材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY

Nanoscale Research Letters Pub Date : 2025-09-02 DOI:10.1186/s11671-025-04337-0

Mitesh Patadia, Tripp T. Lappalainen, Riley Smith, Ana De Leon, Rebekah Downes

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引用次数: 0

Abstract

Aim

This study investigates the enhancement of mechanical and morphological properties of dental resin composites through the incorporation of hexagonal boron nitride (hBN) and boron nitride nanotubes (BNNTs) using additive manufacturing techniques.

Materials and methods

hBN-modified resin (1 wt%) and BNNT-modified resin (0.1 wt%) were prepared separately, with BNNTs pre-dispersed in dimethylformamide (DMF) before mixing into the resin matrix. Stereolithography (SLA) 3D printing was employed to fabricate dental structures. Compression tests were conducted on neat resin, hBN-reinforced resin, and BNNT-reinforced resin, and scanning electron microscopy (SEM) was utilized to analyze fracture mechanisms. Finite element method (FEM) simulations further explored the interactions within the composites.

Results

The compression strength of neat resin, hBN-reinforced resin, and BNNT-reinforced resin averaged 24.93 MPa, 25.92 MPa, and 36.31 MPa, respectively. SEM analysis revealed improved interfacial bonding, leading to enhanced load transfer and fracture resistance. FEM simulations corroborated these findings, highlighting the reinforcing effect of the nanomaterials.

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利用立体光刻增材制造技术提高纳米材料增强牙用复合材料的性能

目的利用增材制造技术研究六方氮化硼（hBN）和氮化硼纳米管（BNNTs）的掺入对牙科树脂复合材料力学性能和形态性能的增强作用。材料和方法分别制备bn改性树脂（1 wt%）和bnnt改性树脂（0.1 wt%）， bnnt在二甲酰胺（DMF）中预分散，然后混合到树脂基体中。采用立体光刻（SLA） 3D打印技术制备牙齿结构。对纯树脂、hbn增强树脂和bnnt增强树脂进行了压缩试验，并利用扫描电镜（SEM）分析了断裂机理。有限元模拟进一步探讨了复合材料内部的相互作用。结果纯树脂、hbn增强树脂和bnnt增强树脂的平均抗压强度分别为24.93 MPa、25.92 MPa和36.31 MPa。扫描电镜分析显示，界面结合得到改善，从而增强了载荷传递和抗断裂能力。有限元模拟证实了这些发现，突出了纳米材料的增强作用。

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来源期刊

Nanoscale Research Letters 工程技术-材料科学：综合

CiteScore

11.30

自引率

0.00%

发文量

110

审稿时长

48 days

期刊介绍： Nanoscale Research Letters (NRL) provides an interdisciplinary forum for communication of scientific and technological advances in the creation and use of objects at the nanometer scale. NRL is the first nanotechnology journal from a major publisher to be published with Open Access.