PMID: 9171002Nov 1, 1996Paper

Effect of light exposure on fracture toughness and flexural strength of light-cured composites

Dental Materials : Official Publication of the Academy of Dental Materials
M MiyazakiH Onose

Abstract

This study was conducted to investigate the curing characteristics of light-cured composites and their related mechanical properties. Single-edge notch specimens [25 mm x 2.5 mm x 5 mm with a 5 mm notch (a/W = 0.5)] were prepared for fracture toughness measurements. For flexural strength testing, a stainless steel mold (25 mm x 2 mm x 2 mm) was used. Light-cured composites were condensed into the mold, and the middle third of the specimen was first activated for 30 s with 400 mW/cm2, for 60 s with 200 mW/cm2, or for 120 s with 100 mW/cm2. Then the remaining thirds were activated at the same intensity and curing time as the middle third. After 24 h storage in 37 degrees C water, three-point bending tests were performed with a span length of 20 mm at a crosshead speed of 0.5 mm/min. A one-way ANOVA, followed by a Newman-Keuls test (p < 0.05), were used to compare the data obtained from each group to test the effect of the curing conditions. Fracture toughness, flexural strength, and flexural modulus varied with resin composites. Among the three curing conditions for each material, there were no significant differences in fracture toughness, flexural strength, or flexural modulus. The fracture toughness and the flexural strength w...Continue Reading

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Aug 11, 2004·Dental Materials : Official Publication of the Academy of Dental Materials·L Musanje, B W Darvell
Mar 6, 2004·Journal of Dentistry·Shisei KuboYoshihiko Hayashi
Jul 6, 2002·Dental Materials : Official Publication of the Academy of Dental Materials·Rolf H HalvorsonCarel L Davidson
Jan 25, 2003·Dental Materials : Official Publication of the Academy of Dental Materials·Shigeru UnoTomoko Abo
Jul 3, 2003·Dental Materials : Official Publication of the Academy of Dental Materials·Lale G LovellChristopher N Bowman
Jul 3, 2003·Dental Materials : Official Publication of the Academy of Dental Materials·L Musanje, B W Darvell
Feb 24, 2001·Dental Materials : Official Publication of the Academy of Dental Materials·K D JandtS H Ashworth
Sep 14, 1999·Dental Materials : Official Publication of the Academy of Dental Materials·C Park, R E Robertson
Sep 28, 2002·British Dental Journal·A C ShortallP J Lumley
Dec 26, 2001·The Journal of Prosthetic Dentistry·P F AbateR L Macchi
Jul 20, 2002·The Journal of Prosthetic Dentistry·Kyo-Han KimOsamu Okuno
Apr 18, 2006·Journal of Oral Science·Akira YamamotoMasashi Miyazaki
Mar 16, 2006·Operative Dentistry·Simone Deliperi, David N Bardwell
Aug 24, 2006·Operative Dentistry·Luis Felipe Jochims SchneiderMário Alexandre Coelho Sinhoreti
Jun 6, 2009·Dental Materials Journal·Juthatip AksornmuangJunji Tagami
Feb 9, 2010·Indian Journal of Dental Research : Official Publication of Indian Society for Dental Research·Murilo Baena LopesMario A C Sinhoreti
Apr 1, 2008·Journal of Conservative Dentistry : JCD·Mithra N HegdeBabita Malhan
Mar 25, 2014·Dental Materials : Official Publication of the Academy of Dental Materials·Robert L EricksonRolf H Halvorson
Mar 29, 2014·Dental Materials : Official Publication of the Academy of Dental Materials·James W WydraChristopher N Bowman
Sep 5, 2003·International Dental Journal·Theunis G OberholzerAthol P G Hudson
Jan 25, 2007·Journal of Prosthodontics : Official Journal of the American College of Prosthodontists·Larry L PaceAli Bolouri
Oct 13, 2004·Journal of Dentistry·D A StewardsonP J Lumley
Jul 25, 2006·Dental Materials : Official Publication of the Academy of Dental Materials·Yin-Chu ChenScott A Prahl
Aug 9, 2005·Dental Materials : Official Publication of the Academy of Dental Materials·Yin-Chu ChenScott A Prahl
Nov 2, 2006·Journal of Biomedical Materials Research. Part B, Applied Biomaterials·F GonçalvesR R Braga
Oct 31, 2002·The Journal of the American Dental Association·Simone Deliperi, David N Bardwell
Dec 24, 2014·American Journal of Orthodontics and Dentofacial Orthopedics : Official Publication of the American Association of Orthodontists, Its Constituent Societies, and the American Board of Orthodontics·Deenadayalan PurushothamanArun B Chitharanjan
Dec 12, 2012·Dental Materials : Official Publication of the Academy of Dental Materials·Mariko MatsumotoHirofumi Yatani
Jun 24, 2005·Journal of Dental Research·A Peutzfeldt, E Asmussen
Sep 25, 2014·Brazilian Dental Journal·Rosângela Paniago MachadoYara Corrêa Silva-Sousa
May 26, 2009·Brazilian Dental Journal·Cecy Martins Silva, Katia Regina Hostilio Cervantes Dias
Mar 31, 2005·Brazilian Dental Journal·Andresa Carla ObiciSimonides Consani
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Jul 18, 2006·Dental Materials : Official Publication of the Academy of Dental Materials·G J P FlemingF J T Burke
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