Effect of different photoinitiators and reducing agents on cure efficiency and color stability of resin-based composites using different LED wavelengths

Journal of Dentistry
Dayane Carvalho Ramos Salles de OliveiraMario Alexandre Coelho Sinhoret

Abstract

To evaluate the effect of photoinitiators and reducing agents on cure efficiency and color stability of resin-based composites using different LED wavelengths. Model resin-based composites were associated with diphenyl(2,4,6-trimethylbenzoyl) phosphine oxide (TPO), phenylbis(2,4,6-trimethylbenzoyl) phosphine oxide (BAPO) or camphorquinone (CQ) associated with 2-(dimethylamino) ethyl methacrylate (DMAEMA), ethyl 4-(dimethyamino) benzoate (EDMAB) or 4-(N,N-dimethylamino) phenethyl alcohol (DMPOH). A narrow (Smartlite, Dentisply) and a broad spectrum (Bluephase G2, Ivoclar Vivadent) LEDs were used for photo-activation (20 J/cm(2)). Fourier transform infrared spectroscopy (FT-IR) was used to evaluate the cure efficiency for each composite, and CIELab parameters to evaluated color stability (ΔE00) after aging. The UV-vis absorption spectrophotometric analysis of each photoinitiator and reducing agent was determined. Data were analyzed using two-way ANOVA and Tukey's test for multiple comparisons (α=0.05). Higher cure efficiency was found for type-I photoinitiators photo-activated with a broad spectrum light, and for CQ-systems with a narrow band spectrum light, except when combined with an aliphatic amine (DMAEMA). Also, when combin...Continue Reading

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Citations

Apr 9, 2016·Dental Materials : Official Publication of the Academy of Dental Materials·Kamila Menezes Guedes de AndradeGiselle Maria Marchi
Jul 30, 2016·Dental Materials : Official Publication of the Academy of Dental Materials·Dayane Carvalho Ramos Salles de OliveiraMario Alexandre Coelho Sinhoreti
Mar 17, 2017·Brazilian Dental Journal·Marcus Vinicius Loureiro BertoloLuis Felipe J Schneider
Jan 12, 2017·Journal of Applied Oral Science : Revista FOB·Dayane Carvalho Ramos Salles de OliveiraMário Alexandre Coelho Sinhoreti
Aug 26, 2017·The Angle Orthodontist·André L Faria-E-SilvaCarmem S Pfeifer
Dec 7, 2017·Brazilian Dental Journal·Caio Vinícius Signorelli GrohmannMário Alexandre Coelho Sinhoreti
Nov 22, 2019·Operative Dentistry·A O Al-Zain, H Y Marghalani
Jun 29, 2018·BioMed Research International·Dayany da Silva Alves MacielRoberta Caroline Bruschi Alonso
Feb 1, 2021·Toxicology in Vitro : an International Journal Published in Association with BIBRA·Boning ZengFeiyue Xing
Apr 30, 2021·Brazilian Dental Journal·Mateus Garcia RochaDayane Oliveira
May 1, 2021·Journal of Dental Research, Dental Clinics, Dental Prospects·Lais Sampaio SouzaPaula Mathias
Sep 21, 2020·Dental Materials : Official Publication of the Academy of Dental Materials·Gabriel Felipe BragançaCarlos José Soares
Oct 21, 2018·Dental Materials : Official Publication of the Academy of Dental Materials·Marina PopalWerner Geurtsen
May 24, 2021·Dental Materials : Official Publication of the Academy of Dental Materials·Mohammad Reza AbbasiMohammad Atai
Jun 27, 2021·Dental Materials : Official Publication of the Academy of Dental Materials·Marcos Vinícius SalvadorAdriano F Lima
Jul 22, 2021·Clinical Oral Investigations·Robson Ferraz de OliveiraMário Alexandre Coelho Sinhoreti
Jul 29, 2021·Journal of Applied Oral Science : Revista FOB·Lucas LaraDayane Oliveira
Aug 25, 2021·European Journal of Dentistry·Luis Felipe Marques de ResendePriscila Christiane Suzy Liporoni
Aug 28, 2021·European Journal of Dentistry·Mateus Garcia RochaAmérico Bortolazzo Correr

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