Polymerization capability of simplified dental adhesives with camphorquinone, phenyl-propanedione and bis-alkyl phosphine photoinitiators
Braz. j. oral sci
;
17: e18370, 2018. tab
Article
in English
| LILACS, BBO
| ID: biblio-963844
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 provided a significantly higher DC in the adhesive systems following photoactivation with a polywave LED. Conclusion: The use of alternative photoinitiators and a polywave LED improved the DC of the adhesive systems examined
Full text:
Available
Index:
LILACS (Americas)
Main subject:
Spectroscopy, Fourier Transform Infrared
/
Dental Cements
/
Dental Materials
Language:
English
Journal:
Braz. j. oral sci
Journal subject:
Dentistry
Year:
2018
Type:
Article
Affiliation country:
Brazil
Institution/Affiliation country:
FAIPE School/BR
/
Universidade Federal do Rio Grande do Norte/BR
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