Effect of Incorporation of Boron Nitride Nanoparticles on Impact Strength and Surface Roughness of Heat Cure Poly Methyl Methacrylate Resin: An In Vitro Study

IF 0.6 Q4 DENTISTRY, ORAL SURGERY & MEDICINE

Dental Hypotheses Pub Date : 2023-01-01 DOI:10.4103/denthyp.denthyp_140_22

Hussein Ali Hussein, H. Al-Judy

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Abstract

Background: The objective of this research was to explore how the addition of boron nitride (BN) nanoparticles in the concentrations of 1% and 1.5% w/w affect the impact strength and surface roughness of heat-cured poly methyl methacrylate resin (PMMA). Methods: Sixty specimens were made from heat-cured acrylic resin and then divided into control, 1%, and 1.5% w/w BN groups. The impact strength and surface roughness were investigated. One-way ANOVA and Tukey’s post hoc test were used for data analysis. Results: Statistically significant difference is found among the three study groups regarding impact strength (P = 0.011) and surface roughness test (P < 0.001). The post hoc test showed significant differences for all multiple comparisons for the surface roughness test (P < 0.001). Yet, multiple comparisons for the impact strength test revealed only a significant difference between the 1.5% BN and control groups (P = 0.005). Conclusion: The addition of boron BN into PMMA improves impact strength with 1.5% concentration; while adversely increase the surface roughness.

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纳米氮化硼对热固化聚甲基丙烯酸甲酯树脂冲击强度和表面粗糙度的影响：体外研究

背景：本研究的目的是探讨1%和1.5%w/w浓度的氮化硼（BN）纳米颗粒的添加对热固化聚甲基丙烯酸甲酯树脂（PMMA）的冲击强度和表面粗糙度的影响。方法：用热固化丙烯酸树脂制备60个试样，然后分为对照组、1%和1.5%w/w BN组。研究了冲击强度和表面粗糙度。数据分析采用单因素方差分析和Tukey的事后检验。结果：三个研究组在冲击强度方面差异有统计学意义（P = 0.011）和表面粗糙度试验（P< 0.001）。事后试验显示，表面粗糙度试验的所有多重比较均存在显著差异（P＜0.001）。然而，冲击强度试验的多重比较仅显示1.5%BN组与对照组之间存在显著差异 = 0.005）。结论：硼氮化硼在PMMA中的加入提高了冲击强度，浓度为1.5%；同时不利地增加了表面粗糙度。

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