PMID: 8595849Mar 1, 1993Paper

Composite microfiller content and its effect on fracture toughness and diametral tensile strength

Dental Materials : Official Publication of the Academy of Dental Materials
W W JohnsonW A Brantley

Abstract

Previous studies have examined the relationship between total filler content in hybrid restorative composites and some of their mechanical properties. This investigation evaluated the effect of varying the amount of microfiller in an experimental hybrid composite on fracture toughness (single edge-notch technique) and diametral tensile strength. The microfiller content in the experimental hybrid composite was varied from 0-44 wt% for seven specimen groups, while the total filler content ranged from 77-84 wt%. It was found that 9 wt% microfiller loading produced the highest mean fracture toughness (1.33 MPa.m(1/2)) and 44 wt% loading produced the lowest mean value (0.80 MPa.m(1/2)). Only the 9 wt% microfiller content group differed significantly in fracture toughness from the other specimen groups. The diametral tensile strength displayed only small differences for the range of microfiller content studied with mean values ranging from 42.1-49.6 MPa. Additional research on the viscoelastic properties of these heavily filled hybrid composites may provide some insight into the differences for the fracture toughness and diametral tensile strength results.

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Citations

Jul 18, 2000·Journal of Biomedical Materials Research·S S ScherrerU C Belser
Mar 14, 2012·Clinical Oral Investigations·Christine Schmidt, Nicoleta Ilie
Nov 1, 1994·Dental Materials : Official Publication of the Academy of Dental Materials·S MatsukawaK Nemoto
Jun 1, 2000·Dental Materials : Official Publication of the Academy of Dental Materials·H H XuJ M Antonucci
Jul 6, 2002·Dental Materials : Official Publication of the Academy of Dental Materials·Klaus D JandtGeoff C Allen
Sep 27, 2003·Dental Materials : Official Publication of the Academy of Dental Materials·Akira MitsuhashiToshio Teranaka
Dec 31, 2003·Dental Materials : Official Publication of the Academy of Dental Materials·Venkata S NagarajanVan P Thompson
Jun 24, 1999·Dental Materials : Official Publication of the Academy of Dental Materials·M Toparli, T Aksoy
Jul 20, 2002·The Journal of Prosthetic Dentistry·Kyo-Han KimOsamu Okuno
Nov 12, 2002·The Journal of Prosthetic Dentistry·Lisa A KnoblochNancy Clelland
Mar 5, 2003·The Journal of Prosthetic Dentistry·Nuray AttarDorothy McComb
Mar 7, 2007·Dental Materials Journal·Naomi TanoueHideo Matsumura
Sep 26, 2012·ISRN Dentistry·José Maurício Dos Santos Nunes ReisMário Tanomaru-Filho
Apr 14, 2015·Journal of Prosthodontics : Official Journal of the American College of Prosthodontists·Seo-Young AnKyu-Bok Lee
Aug 9, 2011·The Journal of Prosthetic Dentistry·Lisa A KnoblochWilliam M Johnston
Mar 8, 2011·Dental Materials : Official Publication of the Academy of Dental Materials·Jun Zhao, Dong Xie
Dec 9, 2008·Dental Materials : Official Publication of the Academy of Dental Materials·Jun ZhaoDong Xie
May 10, 2008·Journal of Biomedical Materials Research. Part a·Carmen BaudinSalvador de Aza
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Sep 16, 2004·Journal of Biomedical Materials Research. Part B, Applied Biomaterials·Yasuhiro TanimotoGoichi Ben
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Dec 9, 2017·Journal of Biomedical Materials Research. Part B, Applied Biomaterials·Hae-Won ChoiSang-Hoon Rhee

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