Polymeric Materials. Effect of Metal Ion Species on Mechanical Relaxation of Ethylene-co-Methacrylic Acid Based Ionomers.

Zeng, Xiangsheng; Araki, Osamu; Takahashi, M.; Takigawa, Toshikazu; Masuda, Toshiro

doi:10.2472/jsms.45.1280

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Principles Of Color Changes1

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2009

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“…Weinitiallyconsideredthepossibilityoftheaddition of antimicrobial substances 10,11) such as silver 12) as a typeoforganometallicoxide 13,14) thatminimallyinhibits polymerization to high-molecular-weight materials, and performed experiments, aiming to produce resin showing less mechanical deterioration 13,15) by adding silver methacrylate to polymethyl methacrylate for thedenturebase 6) . In addition, polymers obtained by adding silver methacrylatetoresinshowedacolorchangenotonly due to temperature but also light irradiation.…”

Section: Principles Of Color Changesmentioning

confidence: 99%

Color change capacity of dental resin mixed with silver methacrylate caused by light irradiation and heating

2009

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Wesynthesizedsilvermethacrylate,addedittoresinfordentaluse,andobservedcolorchangesintheresinfromcolorlessto red-purplefollowinglightirradiation.Therefore,0.01-0.10wt%silvermethacrylatewasaddedtotwotypesofresinpowder, i.e., self-curing resin produced by the polymerization of a barbituric acid derivative, quaternary ammonium, and an organometalliccompound(TypeI),andBPO-tertiaryamineresin(TypeII),andsampleswereproducedbypolymerization withtheattachedmonomer.Changeswithtimeinthecolorofsamplesfrom3hours(newsamples)to16days(oldsamples) afterpolymerizationandalsocolorchangesofoldandnewsamplesafterheatingwereevaluated.Subsequently,changesin colorwithvariationsinthelightintensity,irradiationtime,andwavelengthwereevaluatedintermsofcolordifferences.

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Section: Principles Of Color Changesmentioning

confidence: 99%