Effect of amount of silane coupling agent on flexural strength of dental composite resins reinforced with aluminium borate whisker

Shanghai Journal of Stomatology ›› 2015, Vol. 24 ›› Issue (3): 294-297.

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Effect of amount of silane coupling agent on flexural strength of dental composite resins reinforced with aluminium borate whisker

ZHU Ming-yi¹,ZHANG Xiu-yin²

1.Department of General Dentistry, Shanghai Ninth People’s Hospital, College of Stomatology, Shanghai Jiao Tong University School of Medicine; Shanghai Key Laboratory of Stomatology. Shanghai 200011, China;
2. Department of Prosthodontics, Shanghai Ninth People’s Hospital, College of Stomatology, Shanghai Jiao Tong University School of Medicine; Shanghai Key Laboratory of Stomatology. Shanghai 200011, China

Received:2014-12-15 Online:2015-06-20 Published:2015-07-24
Supported by:
Research Fund of Science and Technology Committee of Shanghai Municipality (08DZ2271100)

Abstract

Abstract: PURPOSE: To evaluate the effect of amount of silane coupling agent on flexural strength of dental composite resins reinforced with aluminium borate whisker (ABW). METHODS: ABW was surface-treated with 0%, 1%, 2%, 3% and 4% silan coupling agent(γ-MPS), and mixed with resin matrix to synthesize 5 groups of composite resins. After heat-cured at 120℃ for 1 h, specimens were tested in three-point flexure to measure strength according to ISO-4049. One specimen was selected randomly from each group and observed under scanning electron microscope (SEM). The data was analyzed with SAS 9.2 software package. RESULTS: The flexural strength（117.93±11.9Mpa）of the group treated with 2% silane coupling agent was the highest, and significantly different from that of the other 4 groups (α=0.01). CONCLUSIONS: The amount of silane coupling agent has impact on the flexural strength of dental composite resins reinforced with whiskers; The flexual strength will be reduced whenever the amount is higher or lower than the threshold.

Key words: Whisker, Composite resin, Silane coupling agent, Flexual strength

CLC Number:

R783.1

ZHU Ming-yi,ZHANG Xiu-yin. Effect of amount of silane coupling agent on flexural strength of dental composite resins reinforced with aluminium borate whisker[J]. Shanghai Journal of Stomatology, 2015, 24(3): 294-297.

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Effect of amount of silane coupling agent on flexural strength of dental composite resins reinforced with aluminium borate whisker

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