The effect of shade and curing mode on cure efficiency of dual-cure resin cements

Authors

  • Dayane Carvalho Ramos Salles Oliveira Department of Restorative Dentistry, Piracicaba Dental School, State University of Campinas http://orcid.org/0000-0003-1420-5720
  • Mateus Garcia Rocha Department of Restorative Dentistry, Piracicaba Dental School, State University of Campinas
  • Eduardo José Souza-Júnior Department of Prosthodontics and Dental Materials, University Center of Varzea Grande
  • Rodrigo Rocha-Maia Department of Restorative Dentistry, College of Dentstry, The University of Iowa, Iowa, USA.
  • Regina Maria Puppin-Rontani Department of Restorative Dentistry, Piracicaba Dental School, State University of Campinas
  • Mario Alexandre Coelho Sinhoreti Department of Restorative Dentistry, Piracicaba Dental School, State University of Campinas

DOI:

https://doi.org/10.14295/bds.2016.v19i3.1265

Abstract

Objective: To evaluate the effect of shade and curing mode on cure efficiency of two dual-cure resin cements. Material and Methods: Two shades (A2 and TRANS) of two different dual-cure resin cements (G-CEM, GC Dental and SET PP, SDI) were submitted to different curing modes: light curing through a 2 mm thick ceramic disc (IPS Empress Esthetic, A2, Ivoclar Vivadent) for 20 s (16 J/cm2), 40 s (32 J/cm2) or 80 s (64 J/cm2) performed immediately or with 1 or 5 min of delay. Fourier transform infrared spectroscopy (FT-IR) was used to evaluate the degree of conversion (DC) after 48 h. For the statistical analysis, data were submitted to three-way analysis of variance, followed by Tukey’s test for multiple comparisons (p=0.05). Results: Shade influenced DC (%) for the dual-cure resin cements tested (p=0.00001). TRANS shade showed lower DC (%) for both cements when there was no delay before light-curing (p=0.00001). Curing mode also influenced DC (%) for the dual-cure resin cements tested: radiant exposure greater than 32 J/cm2 and delaying light-curing for 1 to 5 min increased the DC (%) for both dual-cure resin cements evaluated. Conclusions: One min delay prior to light curing improved the cure efficiency and may be a more clinically acceptable approach to increase the degree of conversion of dual-cure resin cements.

Author Biographies

Dayane Carvalho Ramos Salles Oliveira, Department of Restorative Dentistry, Piracicaba Dental School, State University of Campinas

DDS, MS, PhD Researcher

Department of Restorative Dentistry

Piracicaba Dental School - State University of Campinas

Mateus Garcia Rocha, Department of Restorative Dentistry, Piracicaba Dental School, State University of Campinas

DDS, MS, PhD Researcher

Department of Restorative Dentistry

Piracicaba Dental School - State University of Campinas

Eduardo José Souza-Júnior, Department of Prosthodontics and Dental Materials, University Center of Varzea Grande

Professor

Department of Prosthodontics and Dental Materials

University Center of Varzea Grande

Rodrigo Rocha-Maia, Department of Restorative Dentistry, College of Dentstry, The University of Iowa, Iowa, USA.

Professor

Department of Restorative Dentistry

College of Dentstry

The University of Iowa

Regina Maria Puppin-Rontani, Department of Restorative Dentistry, Piracicaba Dental School, State University of Campinas

Professor

Department of Restorative Dentistry

Piracicaba Dental School

State University of Campinas

Mario Alexandre Coelho Sinhoreti, Department of Restorative Dentistry, Piracicaba Dental School, State University of Campinas

Professor

Department of Restorative Dentistry

Piracicaba Dental School

State University of Campinas

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Published

2016-09-29

Issue

Vol. 19 No. 3 (2016): Jul. - Sep. / 2016 - Published September 2016

Section

Clinical or Laboratorial Research

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