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Special Article | Publishing Language: Chinese | Open Access

The fatigue resistances of glass fiber reinforced composite resin space maintainers: an in vitro study

Jin YANG1, Zhong-ping YIN2, Yan-hua XU1( )
Department of Orthodontics, the Affiliated Stomatology Hospital of Kunming Medical University, Kunming 650031, China
Department of Stomatology, Daqing Longnan Hospital, the Fifth Affiliated Hospital of Qiqihar Medical College, Daqing 163453, China
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Abstract

Objective

To evaluate the fatigue resistances of glass fiber reinforced composite resin (GFRCR) space maintainers and to compare the fatigue resistance of GFRCR space maintainers made of two different kinds of composite resins.

Methods

40 extracted human molars were selected. Samples were randomly divided into two groups (n = 20). Space maintainers in group A were made of Z350 composite resin, while space maintainers in group B were made of Grengloo composite resin. All the specimens were exposed to temperature alternating between 5~55 ℃. Then they were placed on the cyclic loading machine to bear cyclic loading and the number of loading times were recorded. The results were compared with standard fatigue strength.

Results

The fatigue resistances of two groups were higher than standard fatigue resistances (P＜0.001). The fatigue resistances of two kinds of space maintainers showed no difference (P = 0.886).

Conclusion

According to the fatigue resistances, GFRCR space maintainers can be clinically used. There were on differences between two kinds of materials in making GFRCR maintainers.

Keywords

Glass fiber reinforced composite resinSpace maintainerFatigue resistancesDental materialsPremature loss of primary teeth
CLC number: R783.1 Document code: A Article ID: 2096-1456(2016)09-507-07

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Journal of Prevention and Treatment for Stomatological Diseases
Volume 24 Issue 9,
September 2016
Pages 507-510
DOI: 10.12016/j.issn.2096-1456.2016.09.002

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Cite this article:
YANG J, YIN Z-p, XU Y-h. The fatigue resistances of glass fiber reinforced composite resin space maintainers: an in vitro study. Journal of Prevention and Treatment for Stomatological Diseases, 2016, 24(9): 507-510. https://doi.org/10.12016/j.issn.2096-1456.2016.09.002

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Received: 08 March 2016
Revised: 05 April 2016
Published: 20 September 2016
© 2016 by Editorial Department of Journal of Prevention and Treatment for Stomatological Diseases

This article is licensed under a Creative Commons Attribution 4.0 International License.