Abstract:
:The aim of this study was to estimate the flexural properties of three kinds of experimental fiber-reinforced composite (FRC) posts and to evaluate their potential use as posts. Experimental FRC posts were fabricated with glass, aramid, and UHMWP fibers. Commercial FRC posts were used for comparison. A three-point bending test was performed at a crosshead speed of 1 mm/min. Experimental glass fiber posts showed significantly higher flexural strengths and moduli than aramid and UHMWP posts. Experimental UHMWP posts demonstrated superior toughness to the commercial posts. The glass fiber posts displayed stiff, strong and brittle features, while the UHMWP posts were flexible, weak and ductile. The flexural properties of the aramid posts fell between those of the glass and UHMWP posts. In conclusion, the glass fiber posts proved excellent in flexural strengths and moduli. However, the superior toughness of UHMWP fibers suggests the possibility of their use as posts in combination with glass fibers.
journal_name
Dent Mater Jjournal_title
Dental materials journalauthors
Kim MJ,Jung WC,Oh S,Hattori M,Yoshinari M,Kawada E,Oda Y,Bae JMdoi
10.4012/dmj.2010-053subject
Has Abstractpub_date
2011-01-01 00:00:00pages
38-44issue
1eissn
0287-4547issn
1881-1361pii
JST.JSTAGE/dmj/2010-053journal_volume
30pub_type
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