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通过两种不同的二氧化钛纳米颗粒掺入方法制备的聚甲基丙烯酸甲酯义齿基托树脂表面均匀性评估——一项体外研究

Evaluation of Surface Homogeneity of Poly Methyl Methacrylate Denture Base Resin fabricated by two different methods of Titanium Dioxide Nanoparticles incorporation - An in vitro Study.

作者信息

Fathima A Nida, Kumari K Sheela, Krishnan Murugesan, Raza Fathima Banu, Srinivasan Rakshini

机构信息

Department of Prosthodontics, Priyadarshini Dental College and Hospital, Thiruvallur, Tamil Nadu, India.

Department of Prosthodontics, Sri Ramachandra Institute of Higher Education and Research, Chennai, Tamil Nadu, India.

出版信息

J Indian Prosthodont Soc. 2024 Oct 1;24(4):387-390. doi: 10.4103/jips.jips_245_24. Epub 2024 Oct 15.

DOI:10.4103/jips.jips_245_24
PMID:40227945
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC11614128/
Abstract

AIM

This study aims to evaluate the surface homogeneity of poly methyl methacrylate (PMMA) resin fabricated by two different methods of incorporating titanium dioxide nanoparticles (NPs).

SETTINGS AND DESIGN

In vitro study; qualitative analysis.

MATERIALS AND METHODS

PMMA resin was divided into two groups with 1% of titanium dioxide NPs were added to each group; Group A contained NPs incorporated in the polymer through magnetic stirring for 60 min and Group B contained NPs incorporated in the monomer through ultrasonic dispersion for 60 min. Ten acrylic block samples were fabricated by standard method for each group and then tested for surface homogeneity by scanning electron microscopy analysis for qualitative analysis.

RESULTS

Group A showed NPs as defined pale white dots with a consistent distribution pattern and minimal air entrapment. Group B showed NPs agglomerated forming clusters of white dots with flaky sheet-like structures.

CONCLUSION

Magnetic stirring of NPs into polymer showed better surface homogeneity than the ultrasonic dispersion of NPs in monomer. The NP incorporation method plays a role in modifying the surface homogeneity of the acrylic.

摘要

目的

本研究旨在评估通过两种不同方法掺入二氧化钛纳米颗粒（NPs）制备的聚甲基丙烯酸甲酯（PMMA）树脂的表面均匀性。

设置与设计

体外研究；定性分析。

材料与方法

将PMMA树脂分为两组，每组添加1%的二氧化钛纳米颗粒；A组通过磁力搅拌60分钟将纳米颗粒掺入聚合物中，B组通过超声分散60分钟将纳米颗粒掺入单体中。每组采用标准方法制作10个丙烯酸块样品，然后通过扫描电子显微镜分析进行表面均匀性测试以进行定性分析。

结果

A组显示纳米颗粒为定义的淡白色点，分布模式一致且空气截留最少。B组显示纳米颗粒团聚形成白点簇，并伴有片状结构。

结论

将纳米颗粒磁力搅拌到聚合物中比将纳米颗粒超声分散在单体中显示出更好的表面均匀性。纳米颗粒掺入方法在改变丙烯酸树脂的表面均匀性方面发挥作用。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9d0a/11614128/d02d50d6044b/JIPS-24-387-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9d0a/11614128/7ef58bb43080/JIPS-24-387-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9d0a/11614128/67c8c4e641f8/JIPS-24-387-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9d0a/11614128/9ef4e483d2f3/JIPS-24-387-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9d0a/11614128/e1e92c605e9c/JIPS-24-387-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9d0a/11614128/d02d50d6044b/JIPS-24-387-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9d0a/11614128/7ef58bb43080/JIPS-24-387-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9d0a/11614128/67c8c4e641f8/JIPS-24-387-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9d0a/11614128/9ef4e483d2f3/JIPS-24-387-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9d0a/11614128/e1e92c605e9c/JIPS-24-387-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9d0a/11614128/d02d50d6044b/JIPS-24-387-g005.jpg

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