Polymerization capability of simplified dental adhesives with camphorquinone, phenyl-propanedione and bis-alkyl phosphine photoinitiators

  • Boniek Castillo Dutra Borges
  • Rodolfo Xavier de Sousa-Lima
  • Géssica Dandara Medeiros de Souza
  • Ana Carla Bezerra de Carvalho Justo-Fernandes
  • Letícia Virgínia de Freitas Chaves
  • Eduardo José Carvalho Souza-Junior
  • Isauremi Vieira de Assunção

Abstract




Aim: this study aimed to evaluate the degree of conversion (DC) exhibited by novel formulations of dental adhesive systems including camphorquinone (CQ), phenyl-propanedione (PPD), and bis-alkyl phosphine oxide (BAPO) when cured by mono- or polywave light emitting diodes (LEDs). Methods: an adhesive model was formulated by mixing hydroxyethyl methacrylate (HEMA, 40 wt%) and bisphenol A glycidyl dimethacrylate (BisGMA, 60 wt%) in ethanol (30 wt%). Five materials were then formulated by adding the following photoinitiators: CQ (1 mol%), CQ/PPD (0.5/0.5 mol%), CQ/BAPO (0.5/0.5 mol%), PPD (1 mol%), and BAPO (1 mol%). The DC for each material was measured with Fourier transform infrared spectroscopy. Analysis of variance and Tukey’s post-hoc test were used to analyze the data (p < 0.05). Results: Except for CQ, the photoinitiators provideda significantly higher DC in the adhesive systems followingphotoactivation with a polywave LED. Conclusion: The use of alternative photoinitiators and a polywave LED improved the DC of the adhesive systems examined.





 

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Published
2018-08-18
How to Cite
BORGES, Boniek Castillo Dutra et al. Polymerization capability of simplified dental adhesives with camphorquinone, phenyl-propanedione and bis-alkyl phosphine photoinitiators. Brazilian Journal of Oral Sciences, [S.l.], p. e18370, aug. 2018. ISSN 1677-3225. Available at: <https://www.fop.unicamp.br/bjos/index.php/bjos/article/view/1392>. Date accessed: 22 july 2019. doi: https://doi.org/10.20396/bjos.v17i0.8652928.
Section
Original Research

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