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生物活性材料与牙本质及树脂复合体的微剪切粘结强度

Microshear Bond Strength of Bioactive Materials to Dentin and Resin Composite.

作者信息

Ahmed Basma, Hamama Hamdi H, Mahmoud Salah Hasab

机构信息

Operative Department, Faculty of Oral and Dental Medicine, Delta University for Science and Technology, Gamasa, Egypt.

Operative Dentistry, Faculty of Dentistry, Mansoura University, Mansoura, Egypt.

出版信息

Eur J Dent. 2023 Jul;17(3):917-923. doi: 10.1055/s-0042-1756692. Epub 2022 Oct 28.

DOI:10.1055/s-0042-1756692
PMID:36307111
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC10569854/
Abstract

OBJECTIVES

The aim of this study was to comparatively evaluate microshear bond strength (μSBS) of bioactive ionic resin composite and resin-modified glass ionomer liner (RMGI) to dentin and resin composite.

MATERIALS AND METHODS

The enamel of 11 posterior molar teeth was removed to expose dentin and then placed in acrylic blocks. Each specimen received three microcylindrical Tygon tubes filled with bioactive ionic resin composite (Activa Bioactive base/liner (PULPDENT: , MA, USA)), RMGI (Riva light cure SDI LTD, Bayswater, Australia), and resin composite (Filtek Z350xt, MN, USA). Composite discs ( = 11) were fabricated from nanofilled resin composite (Filtek Z350xt) and then fixed in acrylic blocks. Each specimen received two microcylindrical Tygon tubes filled with Activa Bioactive base/liner and Riva RMGI. All specimens were mounted individually to universal testing machine for μSBS test. Failure modes were analyzed using stereomicroscope and scanning electron microscope.

RESULTS

Filtek Z350xt nanofilled resin composite showed the highest μSBS values. No statistical significant difference was found between Activa Bioactive and Riva RMGI ( > 0.05).

CONCLUSION

Bioactive ionic resin composite liner exhibited similar bond strength as RMGI to dentin and resin composite.

摘要

目的

本研究旨在比较评估生物活性离子树脂复合材料和树脂改性玻璃离子衬层（RMGI）与牙本质及树脂复合材料之间的微剪切粘结强度（μSBS）。

材料与方法

去除11颗后磨牙的牙釉质以暴露牙本质，然后将其置于丙烯酸树脂块中。每个样本接受三根填充有生物活性离子树脂复合材料（Activa生物活性基底/衬层（PULPDENT： ，美国马萨诸塞州））、RMGI（Riva光固化，SDI LTD，澳大利亚贝斯沃特）和树脂复合材料（Filtek Z350xt，美国明尼苏达州）的微型圆柱形泰根管。由纳米填充树脂复合材料（Filtek Z350xt）制作复合树脂圆盘（n = 11），然后固定在丙烯酸树脂块中。每个样本接受两根填充有Activa生物活性基底/衬层和Riva RMGI的微型圆柱形泰根管。所有样本分别安装到万能试验机上进行μSBS测试。使用体视显微镜和扫描电子显微镜分析失败模式。

结果

Filtek Z350xt纳米填充树脂复合材料显示出最高的μSBS值。Activa生物活性材料和Riva RMGI之间未发现统计学显著差异（P > 0.05）。

结论

生物活性离子树脂复合材料衬层与RMGI对牙本质和树脂复合材料的粘结强度相似。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/adef/10569854/64bc013a63c3/10-1055-s-0042-1756692-i2272229-1.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/adef/10569854/64bc013a63c3/10-1055-s-0042-1756692-i2272229-1.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/adef/10569854/64bc013a63c3/10-1055-s-0042-1756692-i2272229-1.jpg

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