Mechanical Evaluation of Boron Nanoparticle-Modified Silicone Elastomers for Maxillofacial Prostheses

IF 3.4 4区 医学 Q2 ENGINEERING, BIOMEDICAL
Naim Berker Altuntaş, Canan Akay, Esra Nur Avukat
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Abstract

This study evaluated the effects of boron nanoparticles (BNPs) on the mechanical properties of two silicone elastomers, A-2000 and A-2006. Tensile, tear, hardness, and elongation tests were conducted in accordance with ASTM and ISO standards. A total of 180 specimens were prepared, comprising control groups without BNPs and experimental groups containing 1 and 3 wt% BNPs. Tensile and tear strength tests were performed using a device with a 1 kN capacity at a crosshead speed of 100 mm/min; hardness was measured using Shore A tests, and Atomic Force Microscopy (AFM) was employed to assess surface roughness. Tensile testing revealed that the A-2000 control group exhibited the highest tensile strength, with significant reductions observed in both BNP-incorporated subgroups. In A-2006, tensile strength decreased significantly with 1 wt% BNPs but partially recovered at 3 wt%. Tear strength in A-2000 significantly decreased at 1 wt% but returned to control levels at 3 wt%, whereas no statistically significant differences were observed among the A-2006 subgroups. Hardness significantly increased with 3 wt% BNPs in A-2000 and with both 1 and 3 wt% BNPs in A-2006. Regarding elongation, A-2000 showed no significant change compared with the control, although the 1 and 3 wt% groups differed significantly from each other. In A-2006, both 1 and 3 wt% BNP groups showed significant reductions in elongation compared with the control. Overall, A-2000 exhibited superior tensile and tear strength, while A-2006 demonstrated greater elongation capacity. These findings indicate that BNP incorporation depends on both the elastomer type and concentration, with potential trade-offs between improved hardness and decreased flexibility. Both A-2000 and A-2006 remain viable options for maxillofacial prostheses, although optimization of BNP concentration is essential to balance strength, durability, and flexibility.

Abstract Image

纳米硼改性有机硅弹性体用于颌面修复的力学性能评价。
研究了硼纳米颗粒(BNPs)对A-2000和A-2006两种有机硅弹性体力学性能的影响。拉伸,撕裂,硬度和伸长率测试按照ASTM和ISO标准进行。共制备180个标本,分为不含BNPs的对照组和含有1 wt% BNPs和3 wt% BNPs的实验组。拉伸强度和撕裂强度试验采用容量为1 kN的装置,十字速度为100 mm/min;硬度测量采用邵氏A试验,并采用原子力显微镜(AFM)评估表面粗糙度。拉伸测试显示,A-2000对照组的拉伸强度最高,两个纳入bnp的亚组的拉伸强度都有显著降低。在A-2006中,1 wt% BNPs的拉伸强度显著下降,但在3 wt%时部分恢复。A-2000的撕裂强度在1 wt%时显著下降,但在3 wt%时恢复到对照水平,而在A-2006亚组中没有观察到统计学上的显著差异。在A-2000中添加3 wt%的BNPs,在A-2006中添加1 wt%和3 wt%的BNPs,硬度显著增加。在伸长率方面,A-2000与对照相比没有显著变化,尽管1 wt%和3 wt%组之间存在显著差异。在A-2006中,与对照组相比,1 wt%和3 wt% BNP组的伸长率均显著降低。总体而言,A-2000表现出优异的拉伸和撕裂强度,而A-2006表现出更大的延伸能力。这些发现表明,BNP的掺入取决于弹性体的类型和浓度,在硬度的提高和柔韧性的降低之间存在潜在的权衡。A-2000和A-2006仍然是颌面假体的可行选择,尽管优化BNP浓度对于平衡强度、耐久性和柔韧性至关重要。
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来源期刊
CiteScore
7.50
自引率
2.90%
发文量
199
审稿时长
12 months
期刊介绍: Journal of Biomedical Materials Research – Part B: Applied Biomaterials is a highly interdisciplinary peer-reviewed journal serving the needs of biomaterials professionals who design, develop, produce and apply biomaterials and medical devices. It has the common focus of biomaterials applied to the human body and covers all disciplines where medical devices are used. Papers are published on biomaterials related to medical device development and manufacture, degradation in the body, nano- and biomimetic- biomaterials interactions, mechanics of biomaterials, implant retrieval and analysis, tissue-biomaterial surface interactions, wound healing, infection, drug delivery, standards and regulation of devices, animal and pre-clinical studies of biomaterials and medical devices, and tissue-biopolymer-material combination products. Manuscripts are published in one of six formats: • original research reports • short research and development reports • scientific reviews • current concepts articles • special reports • editorials Journal of Biomedical Materials Research – Part B: Applied Biomaterials is an official journal of the Society for Biomaterials, Japanese Society for Biomaterials, the Australasian Society for Biomaterials, and the Korean Society for Biomaterials. Manuscripts from all countries are invited but must be in English. Authors are not required to be members of the affiliated Societies, but members of these societies are encouraged to submit their work to the journal for consideration.
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