Effects of rotating fatigue on the mechanical properties of microhybrid and nanofiller-containing composites

Jie LIN; Minglei SUN; Zhiqiang ZHENG; Akikazu SHINYA; Jianmin HAN; Hong LIN; Gang ZHENG; Akiyoshi SHINYA

doi:10.4012/dmj.2012-225

Original Paper

Effects of rotating fatigue on the mechanical properties of microhybrid and nanofiller-containing composites

Jie LIN, Minglei SUN, Zhiqiang ZHENG, Akikazu SHINYA, Jianmin HAN, Hong LIN, Gang ZHENG, Akiyoshi SHINYA

Author information

Jie LIN
School and Hospital of Stomatology, Fujian Medical University
Department of Crown and Bridge, School of Life Dentistry at Tokyo, The Nippon Dental University
Minglei SUN
Department of Oral and Maxillofacial Surgery, The First Affiliated Hospital of Zhengzhou University
Zhiqiang ZHENG
School and Hospital of Stomatology, Fujian Medical University
Akikazu SHINYA
Department of Crown and Bridge, School of Life Dentistry at Tokyo, The Nippon Dental University
Jianmin HAN
Dental Materials Laboratory, Peking University School and Hospital of Stomatology
Hong LIN
Dental Materials Laboratory, Peking University School and Hospital of Stomatology
Gang ZHENG
Dental Materials Laboratory, Peking University School and Hospital of Stomatology
Akiyoshi SHINYA
Department of Crown and Bridge, School of Life Dentistry at Tokyo, The Nippon Dental University

Keywords: Nanofiller-containing composite, Rotating fatigue testing, Flexural strength, Vickers hardness

JOURNAL FREE ACCESS

2013 Volume 32 Issue 3 Pages 476-483

DOI https://doi.org/10.4012/dmj.2012-225

Details

Abstract

The objective of this study was to assess and compare the flexural strength and Vickers hardness of five nanofiller-containing composites (Filtek Supreme XT, Gradia Forte, Luna-Wing, GNH400N, GCUC) against five microhybrid composites (Meta Color Prime Art, Solidex, Estenia C&B, Ceramage, Clearfil Majesty) before and after rotating fatigue test (RFT). For each resin composite, 16 rectangular beam specimens (2 mm×2 mm×25 mm) were prepared and half of which were subjected to 1×10⁴ cycles in RFT. Flexural strength was determined using a three-point bending test. Vickers hardness measurements were carried out on specimens which failed after the three-point bending test. When under the influence of rotating fatigue, the flexural strength of all composites was affected by multiple factors. In contrast, rotating fatigue had no significant influence on the Vickers hardness of both microhybrid and nanofiller-containing composites.

Corresponding author

Register with J-STAGE for free!