| Literature DB >> 32848103 |
Swe Zin Aung1, Tomohiro Takagaki1,2, Masaomi Ikeda3, Kosuke Nozaki4, Michael F Burrow5, Ahmed Abdou1, Toru Nikaido1,2, Junji Tagami1.
Abstract
This study aimed to assess the influence of different light curing units (LCUs) on the polymerization of various flowable resin composites. Three LCUs (Optilux 501, Elipar™ DeepCure-L LED and Bluephase®20i) and eight flowable resin composites: MI FIL Flow, Estelite Flow Quick, Estelite Universal Flow (medium), Estelite Universal Flow (super low), Beautifil Flow Plus, Clearfil Majesty ES Flow, Filtek Supreme Ultra flowable and TetricEvo Flow were tested. For Vickers microhardness (VHN) test and degree of conversion (DC), specimens were prepared and polymerized for 20 s. VHN test was performed at top surfaces (3 indentations) and DC for each specimen was measured using Fourier transform infrared (FT-IR) spectroscopy after 24 h dry storage in dark at 37˚C. The data were analyzed with 2-way ANOVA and t-test with Bonferroni correction. DC and hardness values showed a relationship between materials and LCUs. The curing efficacy of LCU type may depend on the material composition.Entities:
Keywords: Degree of conversion; Flowable resin composites; Light curing units; Polymerization efficacy; Vickers microhardness
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Year: 2020 PMID： 32848103 DOI： 10.4012/dmj.2019-353
Source DB: PubMed Journal: Dent Mater J ISSN： 0287-4547 Impact factor: 2.102