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Influence of artificial aging and ZrO2 nanoparticle-reinforced repair resin on the denture repair strength

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Influence of artificial aging and ZrO2 nanoparticle-reinforced repair resin on the denture repair strength

dc.contributor.author	Gad, Mohammed-Moustafa	es
dc.contributor.author	Rahoma, Ahmed	es
dc.contributor.author	Abualsaud, Reem	es
dc.contributor.author	Al Thobity, Ahmad M.	es
dc.contributor.author	Akhtar, Sultan	es
dc.contributor.author	Siddiqui, Intisar A.	es
dc.contributor.author	Al Harbi, Fahad A.	es
dc.date.accessioned	2020-10-22T11:50:51Z
dc.date.available	2020-10-22T11:50:51Z
dc.date.issued	2020	es
dc.identifier.uri	https://hdl.handle.net/10550/76029
dc.description.abstract	Background: The purpose of this study was to evaluate the effect of aging process on the tensile strength (TS) of repaired acrylic denture base using ZrO2 nanoparticles (nano-ZrO2)-reinforced autopolymerized resin. Material and Methods: A total of 240 heat-polymerized acrylic resin specimens (n=10) were prepared and sectioned creating 2 mm-repair-gap. Autopolymerized acrylic resin, pure and modified with 2.5, 5, and 7.5wt% nano-ZrO2were used for specimens repair. TS of repaired specimens were measured using the universal testing machine af-ter water immersion at 37oC for 2, 7 and 30 days. At each time interval, half the immersed specimens underwent thermo-cycling aging process (5000 cycles at 5/55°C) before TS testing. One-way ANOVA and Tukey-Kramer multiple-comparison tests were used for data analysis at ?=0.05. Results: Aging process for all groups showed significant differences in TS between unreinforced and nano-ZrO2reinforced groups (p<0.05). Within immersed nano-ZrO2-reinforced specimens, 5% group immersed for 30-days showed the highest significant TS value (p<0.05). With regards to thermocycling, 5% group showed the highest TS values after 2-days and 30-days groups while after 7-days, significant differences were found between 2.5% group and 5% and 7.5% groups (p?0.05). SEM images analysis displayed the ductile fracture type for nano-ZrO2reinforced groups.Conclusions: In summary, 5.0%-nano-ZrO2 addition to repair resin showed an improvement in tensile strength of repaired acrylic resin with different aging processes.	es
dc.source	Gad, Mohammed-Moustafa ; Rahoma, Ahmed ; Abualsaud, Reem ; Al Thobity, Ahmad M. ; Akhtar, Sultan ; Siddiqui, Intisar A. ; Al Harbi, Fahad A.. Influence of artificial aging and ZrO2 nanoparticle-reinforced repair resin on the denture repair strength. En: Journal of Clinical and Experimental Dentistry, 12 4 2020: 354-362	es
dc.title	Influence of artificial aging and ZrO2 nanoparticle-reinforced repair resin on the denture repair strength	es
dc.type	info:eu-repo/semantics/article	en
dc.type	info:eu-repo/semantics/publishedVersion	en
dc.subject.unesco	UNESCO::CIENCIAS MÉDICAS	es
dc.identifier.doi	10.4317/jced.56610	es