Influence of soft-start curing protocol in the degree of conversion of a nanohybrid resin composite

Authors

  • Heloisa Amorim Periotto Graduate School of Dentistry, University of Fortaleza (UNIFOR)
  • Ana Daielly da Silva Graduate School of Dentistry, University of Fortaleza (UNIFOR)
  • Isabella Saraiva Leão de Resende Nucleus of Study and Research in Dental Biomaterials (NEPBiO), Graduate School of Dentistry, University Center of Christus (UNICHRITUS)
  • Hellen Martins Jucá Nucleus of Study and Research in Dental Biomaterials (NEPBiO), Graduate School of Dentistry, University Center of Christus (UNICHRITUS)
  • Sérgio Lima Santiago Department of Restorative Dentistry, Faculty of Pharmacy, Dentistry and Nursing, Federal University of Ceará (UFC)
  • Jiovanne Rabelo Neri University of Fortaleza

DOI:

https://doi.org/10.15448/1980-6523.2018.1.29828

Keywords:

composite resins, polymerization, physical properties.

Abstract

OBJECTIVE: To analyze the influence of the soft-start curing protocol in the degree of conversion of a nanohybrid composite.
METHODS: Ten specimens were prepared from the polymerization of the composite resin Llis using two protocols: conventional (1000 mW/cm² for 20 seconds) or gradual (250 mW/cm² for 20 seconds + 1000 mW/cm² for 15 seconds). Then, analyzes were performed using a spectrophotometer and data were subjected to Two-way ANOVA and Holm-Sidak test. The significance level was 5%.
RESULTS: There was no statistical difference between the average resin conversion degree of composite values in the base area and top for both curing protocols (p > 0.05).
CONCLUSION: Therefore, the use of soft-start curing protocol did not interfere in the degree of conversion of a nanohybrid composite.

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Published

2018-12-30

Issue

Vol. 33 No. 1 (2018)

Section

Original Article

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