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Please use this identifier to cite or link to this item: http://acervodigital.unesp.br/handle/11449/126040
Title: 
Chemical and morphological features of dental composite resin: influence of light curing units and immersion media
Author(s): 
Institution: 
  • Universidade Estadual Paulista (UNESP)
  • Centro Universitário de Araraquara (UNIARA)
  • Universidade de São Paulo (USP)
ISSN: 
1097-0029
Abstract: 
Aims: The study evaluated the influence of light curing units and immersionmedia on superficial morphology and chemistry of the nanofilled composite resin Supreme XT (3M)through the EDX analysis and SEM evaluation. Light curing units with different power densitiesand mode of application used were XL 3000 (480 mW/cm2), Jet Lite 4000 Plus (1230mW/cm2), andUltralume Led 5 (790 mW/cm2) and immersion media were artificial saliva, Coke1, tea and coffee,totaling 12 experimental groups. Specimens (10 mm 3 2 mm) were immersed in each respectivesolution for 5 min, three times a day, during 60 days and stored in artificial saliva at 378C 6 18Cbetween immersion periods. Topography and chemical analysis was qualitative. Findings: Groupsimmersed in artificial saliva, showed homogeneous degradation of matrix and deposition of calciumat the material surface. Regarding coffee, there was a reasonable chemical degradation with loss ofload particles and deposition of ions. For tea, superficial degradation occurred in specific areaswith deposition of calcium, carbon, potassium and phosphorus. For Coke1, excessive matrix degra-dation and loss of load particles with deposition of calcium, sodium, and potassium. Conclusion:Light curing units did not influence the superficial morphology of composite resin tested, but theimmersion beverages did. Coke1affected material’s surface more than did the other tested drinks.Microsc. Res. Tech. 73:176–181, 2010.
Issue Date: 
2010
Citation: 
Microscopy Research and Technique, v. 73, p. 176-181, 2010.
Time Duration: 
176-181
Keywords: 
  • Composite resin
  • Beverages
  • Dental technology
  • EDX
  • SEM
Source: 
http://onlinelibrary.wiley.com/doi/10.1002/jemt.20769/abstract?systemMessage=Wiley+Online+Library+will+have+intermittent+access+on+8th+August+2015+from+10%3A00-16%3A00+BST+%2F+05%3A00-11%3A00+EDT+%2F+17%3A00-23%3A00+SGT+for+essential+maintenance.++Apologies+for+the+inconvenience.
URI: 
Access Rights: 
Acesso restrito
Type: 
outro
Source:
http://repositorio.unesp.br/handle/11449/126040
Appears in Collections:Artigos, TCCs, Teses e Dissertações da Unesp

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