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- Title
Hybrid effects of zirconia nanoparticles with aluminum borate whiskers on mechanical properties of denture base resin PMMA.
- Authors
Xiu-Yin ZHANG; Xin-Jing ZHANG; Zhuo-Li HUANG; Bang-Shang ZHU; Rong-Rong CHEN
- Abstract
The aim of this study was to investigate the hybrid effects of ZrO2 nanoparticles (nano-ZrO2) and aluminum borate whiskers (ABWs) on flexural strength and surface hardness of denture base resin, polymethyl methacrylate (PMMA). Both nano-ZrO2 and ABWs were modified by silane coupling agent (Z6030) before being mixed with PMMA. Various amounts of silanized nano-ZrO2 and ABWs were mixed with PMMA to prepare ZrO2-ABW/PMMA composites. Flexural strength and surface hardness were evaluated using three- point bending test and Vickers hardness test respectively. Fractured surfaces were also observed by scanning electron microscopy (SEM). The mechanical behaviors of silanized ZrO2-ABW/PMMA composites were significantly improved. Flexural strength reached a maximum value of 108.01±5.54 MPa when 2 wt% of nano-ZrO2 was mixed with ABWs at a ZrO2/ABW ratio of 1:2, amounting to an increase of 52% when compared with pure PMMA. Surface hardness achieved a maximum value of 22.50±0.86 MPa when 3 wt% of nano-ZrO2 was mixed with ABWs at the same ZrO2/ABW ratio, which was an increase of 27% when compared with pure PMMA.
- Subjects
DENTURES; ZIRCONIUM oxide; PHYSIOLOGICAL effects of nanoparticles; ALUMINUM borate; DENTAL resins; POLYMETHYLMETHACRYLATE
- Publication
Dental Materials Journal, 2014, Vol 33, Issue 1, p141
- ISSN
0287-4547
- Publication type
Article
- DOI
10.4012/dmj.2013-054