Journal
DENTAL MATERIALS JOURNAL
Volume 37, Issue 1, Pages 33-39Publisher
JAPANESE SOC DENTAL MATERIALS DEVICES
DOI: 10.4012/dmj.2016-430
Keywords
Shrinkage; Composite; Polymerization; Light-curing; Computed-tomography
Funding
- Capes [1777-2014]
Ask authors/readers for more resources
This study evaluated the influence of different light-curing modes on the volumetric polymerization shrinkage and degree of conversion of a composite resin at different locations using micro-computed tomography and Fourier transform infrared spectroscopy (FTIR). Specimens were divided into 4 groups based on the light-curing mode used (Bluephase 20i): 1 -High (1,200 mW/cm(2)); 2 -Low (650 mW/cm(2)); 3 -Soft-start (650-1,200 mW/cm(2)); and 4 -Turbo (2,000 mW/cm(2)). Degree of conversion was calculated by the measurement of the peak absorbance height of the uncured and cured materials at the specific wavenumbers, and was performed by FTIR 48 h after curing resin samples. Degree of conversion was analyzed using two-way ANOVA. No significant differences were observed independent of the region of the restoration investigated (p>0.05). Different curing modes did not influence volumetric shrinkage neither degree of conversion of class I composite resin restorations.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available