The effect of clinically relevant thermocycling on the flexural properties of endodontic post materials

Stewardson, Dominic; Shortall, A.C.; Marquis, P. M.

doi:10.1016/j.jdent.2010.02.003

Cited by 44 publications

(41 citation statements)

References 13 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…This was in accordance with the results of a previous study, in which 2000 cycles of thermo-cycling followed by immersion in beverages, did not influence the mechanical properties of nano-filled composite compared to conventional hybrid composite [8]. However, in another study, the influence of thermo-cycling on flexure properties was material dependent, in which most of tested materials showed increased flexure modulus after thermocycling [9]. The improved mechanical properties after thermo-cycling was inferred to the thermal stresses generated during thermo-cycling process and improve the bond strength between the composite components decreasing the space between polymer chains.…”

Section: Discussionsupporting

confidence: 91%

“…Dental composite restorations in the oral cavity are subjected to temperature variations during function due to consumption of cold and hot foods and beverages [9]. However, in literatures, there are variable techniques of sample storage before mechanical testing.…”

Section: Resultsmentioning

confidence: 99%

“…However, in literatures, there are variable techniques of sample storage before mechanical testing. Composite test samples may be stored at room temperature, body temperature, or thermo-cycled to represent temperature variation in the oral cavity [7][8][9][10][11][12][13][14][15]17]. In addition, water was used as an aging solution in several studies to mimic the wet environment in the oral cavity [4,[18][19][20].…”

Section: Resultsmentioning

confidence: 99%

“…Some of these studies showed that water storage and thermo-cycling before testing may have a deleterious effect on mechanical behavior of resin materials [5,21,22], while others show either no influence of these variables [8] or even improved mechanical properties after thermo-cycling [9].…”

Section: Resultsmentioning

confidence: 99%

“…The variations of temperature in oral cavity when consuming hot or cold food may influence mechanical behavior of different restorative materials [8]. Temperature in oral cavity during food consumption ranges from 1 o C to 55 o C [9]. Thermo-cycling is a procedure performed before mechanical testing of dental materials to simulate temperature variations during eating, drinking and breathing [24,25].…”

Section: Resultsmentioning

confidence: 99%

See 4 more Smart Citations

Influence of Storage Condition on Flexure Properties of Nano-Composite

Abuelenain¹

2017

Journal of Dentistry and Oral Care Medicine

View full text Add to dashboard Cite

show abstract

Section: Discussionsupporting

confidence: 91%

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

See 3 more Smart Citations

Influence of Storage Condition on Flexure Properties of Nano-Composite

Abuelenain¹

2017

Journal of Dentistry and Oral Care Medicine

View full text Add to dashboard Cite

show abstract

Improving adhesion between polyester cord and rubber by using glycidyl‐POSS

Doğancı

2020

J of Applied Polymer Sci

View full text Add to dashboard Cite

Poly(ethylene terephthalate) (PET) cords are usually coated with epoxy and/or isocyanate solutions (like methylene diphenyl diisocyanate [MDI]) before resorcinol-formaldehyde-latex (RFL) to increase the adhesion efficiency of RFL. In this article, the addition of glycidyl polyhedral oligomeric silsesquioxane (GPOSS) as an adhesion promoter to PET cord was investigated for reinforcing PET cord/rubber interfacial adhesion. Therefore, GPOSS treated PET cords (GPOSS + MDI + RFL) were prepared in different process conditions like different GPOSS ratios and oven curing times and then vulcanized with rubber. RFL, GPOSS + RFL, MDI + RFL, and commercial epoxies treated PET cord samples were also prepared for comparison with GPOSS +MDI + RFL treated PET cord. The thermal, mechanical, and morphological properties of the treated PET yarn and their composites with rubber were investigated. It was seen that in the GPOSS coated PET yarns increased the stiffness and no change was observed in the tensile strength of the PET yarns. It was determined that the utilization of GPOSS in the PET cord improved the adhesion of the cord to rubber when compared with other treated PET cords via H-adhesion and strip peel adhesion tests. Especially, since adhesion values give better results than commercially used epoxies, GPOSS as an adhesion promoter can be recommended in the rubber industry.

show abstract

Effect of Thermocycling on Flexural Strength and Weibull Statistics of Machinable Glass–Ceramic and Composite Resin

Peampring

Sanohkan

2013

J Indian Prosthodont Soc

View full text Add to dashboard Cite

To evaluate the durability of machinable dental restorative materials, this study performed an experiment to evaluate the flexural strength and Weibull statistics of a machinable lithium disilicate glass-ceramic and a machinable composite resin after being thermocycled for certain cycles. A total of 40 bar-shape specimens of were prepared with the dimension of 20 mm × 4 mm × 2 mm, which were divided into four groups of 10 specimens. Ten specimens of machinable lithium disilicate glass-ceramic (IPS e.max CAD, Ivoclar Vivadent, Liechtenstein) and 10 specimens of machinable composite resin (Paradigm MZ 100, 3M ESPE, USA) were subjected to 3-point flexural strength test. Other 10 specimens of each material were thermocycled between water temperature of 5 and 55 °C for 10,000 cycles. After that, they were tested using 3-point flexural strength test. Statistical analysis was performed using two-way analysis of variance and Tukey multiple comparisons. Weibull analysis was performed to evaluate the reliability of the strength. Means of strength and their standard deviation were: thermocycled IPS e.max CAD 389.10 (50.75), non-thermocycled IPS e.max CAD 349.96 (38.34), thermocycled Paradigm MZ 100 157.51 (12.85), non-thermocycled Paradigm MZ 100 153.33 (19.97). Within each material group, there was no significant difference in flexural strength between thermocycled and non-thermocycled specimens. Considering the Weibull analysis, there was no statistical difference of Weibull modulus in all experimental groups. Within the limitation of this study, the results showed that there was no significant effect of themocycling on flexural strength and Weibull modulus of a machinable glass-ceramic and a machinable composite resin.

show abstract

The effect of clinically relevant thermocycling on the flexural properties of endodontic post materials

Cited by 44 publications

References 13 publications

Influence of Storage Condition on Flexure Properties of Nano-Composite

Influence of Storage Condition on Flexure Properties of Nano-Composite

Improving adhesion between polyester cord and rubber by using glycidyl‐POSS

Effect of Thermocycling on Flexural Strength and Weibull Statistics of Machinable Glass–Ceramic and Composite Resin

Contact Info

Product

Resources

About