Comparative Evaluation of the Irradiance Emitted by
Different Methods of Photopolymerization
Volume 3 - Issue 2
Diogo de Azevedo Miranda1*, Anderson Quirino Prenassi2, Gabriel Furtado CorrĂȘa2 and Juliana Abdallah Mendes
Costa2
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- 1Adjunct Professor of Faculty of Medical Sciences, Department of Dentistry and Health of Juiz De Fora, Brazil
- 2Student, Dental of Faculty of Medical Sciences and Health of Juiz De Fora, Brazil
*Corresponding author:
Diogo de Azevedo Miranda, Rua Sampaio 330/602, 1Adjunct Professor of Faculty of Medical Sciences,
Department of Dentistry and Health of Juiz De Fora, Brazil
Received: October 03, 2018; Published: October 10, 2018
DOI: 10.32474/MADOHC.2018.03.000160
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Abstract
Introduction: To obtain success in the polymerization of restorative materials, obtaining a quality, it is necessary a light curing
device and this in turn must be in proper operation. It is to be known that some other factors will influence these restorations as
the emission and intensity of the light, adequate time of exposure and correct wavelength. Most of the three methods of light curing
are used: High intensity in continuous light (High), increasing intensity (Soft-Start) and low (Low) intensity. The alteration between
the above methods according to the time of exposure may cause different effects and should be chosen according to the need of the
restorative procedure to be performed.
Objective: To compare the photoactivation modes (High and Soft Start) emitted by two different devices (Dabi and Gnatus). All
photo activators come from the Dental Clinic of Maternities Terezinha de Jesus Hospital.
Method: An analysis of variance (ANOVA) was applied, considering the two device brands (Dabi and Gnatus) in the statistical
model, so that the two photoactivation modes (High and Soft start) were evaluated in the same apparatus. All analyzes were
performed in the R * program considering the level of significance of 5%.
Results: It was observed that the Gnatus device presented higher mean irradiance (energy density), p <0.05, independent
of the photoactivation mode. It is also observed that, for both devices, higher irradiance averages were observed with the high
photoactivation mode (p <0.05).
Conclusion: The two methods tested reached the minimum value indicated for polymerization of resinous materials, however,
the Gnatus showed higher mean irradiance, and in both appliances the High method presented values statistically higher than the
Soft Start method.
Keywords: Light; Irradiation; Polymerization
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