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Article: The effect of aging on the fracture toughness of esthetic restorative materials

TitleThe effect of aging on the fracture toughness of esthetic restorative materials
Authors
Issue Date2010
PublisherMosher & Linder, Inc. The Journal's web site is located at http://www.amjdent.com
Citation
American Journal Of Dentistry, 2010, v. 23 n. 3, p. 142-146 How to Cite?
AbstractPurpose: To compare the fracture toughness (KIc) of tooth-colored restorative materials based on a fourpoint bending; to assess the effect of distilled water and a resin surface sealant (G-Coat Plus) on the resistance of the materials to fracture. Methods: Specimens were prepared from six materials: Quix FiI; Dyract (Dentsply), Freedom (SDI), Fuji VII (GC), Fuji IX (GC); Fuji II LC (GC). Fuji II LC and Fuji IX were tested both with and without applying G-Coat Plus (GC). The specimens were divided into the three groups which were conditioned in distilled water at 37°C for 48 hours, 4 and 8 weeks. The specimens were loaded in a four-point bending test using a universal testing machine. The maximum load to specimen failure was recorded and the fracture toughness calculated. Results: There were significant differences among most of the materials (P< 0.001). Quix FiI had the highest mean KIc value and Fuji VII the lowest. Immersion in distilled water for the resin composite and polyacid-modified resin composites caused a significant decrease in KIc as the time interval increased. For glass-ionomer cements, KIc decreased significantly after 4 weeks, and after 8 weeks immersion slightly increased. G-Coat Plus affected Fuji II LC positively while it had no effect on the Fuji IX.
Persistent Identifierhttp://hdl.handle.net/10722/134965
ISSN
2015 Impact Factor: 1.194
2015 SCImago Journal Rankings: 0.443
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorBagheri, Ren_HK
dc.contributor.authorAzar, MRen_HK
dc.contributor.authorTyas, MJen_HK
dc.contributor.authorBurrow, MFen_HK
dc.date.accessioned2011-07-27T01:25:10Z-
dc.date.available2011-07-27T01:25:10Z-
dc.date.issued2010en_HK
dc.identifier.citationAmerican Journal Of Dentistry, 2010, v. 23 n. 3, p. 142-146en_HK
dc.identifier.issn0894-8275en_HK
dc.identifier.urihttp://hdl.handle.net/10722/134965-
dc.description.abstractPurpose: To compare the fracture toughness (KIc) of tooth-colored restorative materials based on a fourpoint bending; to assess the effect of distilled water and a resin surface sealant (G-Coat Plus) on the resistance of the materials to fracture. Methods: Specimens were prepared from six materials: Quix FiI; Dyract (Dentsply), Freedom (SDI), Fuji VII (GC), Fuji IX (GC); Fuji II LC (GC). Fuji II LC and Fuji IX were tested both with and without applying G-Coat Plus (GC). The specimens were divided into the three groups which were conditioned in distilled water at 37°C for 48 hours, 4 and 8 weeks. The specimens were loaded in a four-point bending test using a universal testing machine. The maximum load to specimen failure was recorded and the fracture toughness calculated. Results: There were significant differences among most of the materials (P< 0.001). Quix FiI had the highest mean KIc value and Fuji VII the lowest. Immersion in distilled water for the resin composite and polyacid-modified resin composites caused a significant decrease in KIc as the time interval increased. For glass-ionomer cements, KIc decreased significantly after 4 weeks, and after 8 weeks immersion slightly increased. G-Coat Plus affected Fuji II LC positively while it had no effect on the Fuji IX.en_HK
dc.languageengen_US
dc.publisherMosher & Linder, Inc. The Journal's web site is located at http://www.amjdent.comen_HK
dc.relation.ispartofAmerican Journal of Dentistryen_HK
dc.subject.meshCompomers-
dc.subject.meshComposite Resins-
dc.subject.meshDental Restoration, Permanent-
dc.subject.meshDental Stress Analysis-
dc.subject.meshGlass Ionomer Cements-
dc.titleThe effect of aging on the fracture toughness of esthetic restorative materialsen_HK
dc.typeArticleen_HK
dc.identifier.emailBurrow, MF:mfburr58@hku.hken_HK
dc.identifier.authorityBurrow, MF=rp01306en_HK
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.pmid20718210-
dc.identifier.scopuseid_2-s2.0-77956203948en_HK
dc.identifier.hkuros186544en_US
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-77956203948&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume23en_HK
dc.identifier.issue3en_HK
dc.identifier.spage142en_HK
dc.identifier.epage146en_HK
dc.identifier.isiWOS:000280541500004-
dc.publisher.placeUnited Statesen_HK
dc.identifier.scopusauthoridBagheri, R=8635819700en_HK
dc.identifier.scopusauthoridAzar, MR=36454706700en_HK
dc.identifier.scopusauthoridTyas, MJ=7006088443en_HK
dc.identifier.scopusauthoridBurrow, MF=7005876730en_HK

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