Comparison of shear bond strength of bonded stainless steel brackets using three different light curing systems: An in vitro study.

Q2 Dentistry

Journal of Orthodontic Science Pub Date : 2023-01-01 DOI:10.4103/jos.jos_83_22

Shashank Soni, Richa Shree, Vijeta Patri, Gaurav Jasoria, Sapana Singh, Ashish Kushwah

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Abstract

Objectives: To evaluate and compare the shear bond strength of stainless-steel brackets using three different light curing units.

Material and methods: Using three LED curing units (3M ESPE Elipar, Ivoclar bluephase, and Woodpecker I LED light cure), 120 precoated metal brackets (Gemini series, 3M Unitek) were cured. The shear bond strength was recorded using a universal testing machine.

Result: The shear strength of the bracket in different light-curing systems was examined with ANOVA test. The mean shear strength of group A, group B, and group C were 16.03 ± 14.30 MPA, 16.86 ± 11.89 MPA, and 20.51 ± 19.40, respectively. The result of the analysis shows that there is a major difference in shear bond strength of these three different light-curing systems with F value = 3.94 and P value 0.04.

Conclusion: We used three LED light-curing units with different intensities and manufacturing companies. The result showed that woodpecker I LED light had significantly highest mean SBS than the other two (Elipar LED curing light and 3M ESPE, Ivoclar bluephase).

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三种不同光固化体系对不锈钢支架剪切强度的影响。

目的:评价和比较三种不同光固化装置对不锈钢支架的剪切粘结强度。材料与方法:采用3种LED光固化装置(3M ESPE Elipar, Ivoclar bluephase, Woodpecker I LED光固化)，固化120个预涂金属支架(Gemini系列，3M Unitek)。用万能试验机记录剪切粘接强度。结果:采用方差分析检验了不同光固化体系下支架的抗剪强度。A、B、C组的平均抗剪强度分别为16.03±14.30 MPA、16.86±11.89 MPA、20.51±19.40 MPA。分析结果表明，三种不同光固化体系的剪切粘结强度存在较大差异，F值为3.94,P值为0.04。结论:我们使用了三个不同强度的LED光固化单元和不同的制造公司。结果表明，啄木鸟I型LED光的平均SBS显著高于其他两种(Elipar LED固化光和3M ESPE, Ivoclar蓝相)。

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