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https://open.uns.ac.rs/handle/123456789/11046
Title: | Modulated photoactivation of composite restoration: Measurement of cuspal movement using holographic interferometry | Authors: | Larisa Blažić Dejan Pantelić Svetlana Savić-Šević Branka Murić Ilija Belić Bratimir Panić |
Keywords: | holography;cuspal deflection;illumination | Issue Date: | 1-Jan-2011 | Journal: | Lasers in Medical Science | Abstract: | The purpose of this research was to investigate the influence of modulated photoactivation on cuspal movement. Eight class II MOD composite restorations were analyzed under various photoactivation protocols in a real-time manner using holographic interferometry. During the first photoactivation protocol, the composite restoration was illuminated for 200 s continuously. In the second protocol, the polymerization lamp was first turned on for 5 s, then turned off for 120 s, and again turned on for a final 195 s. In both protocols, radiant exposure was the same. A significant decrease (p<0.05) in cuspal deflection was found for two-step irradiation (average value of total cuspal deflection was 5.03±0.62 μm) compared to continuous irradiation (average value of total cuspal deflection was 5.95±0.65 μm). The two-step photoactivation protocol was found preferable, since it resulted in a significantly lower cuspal deflection (11% lower, compared to the continuous illumination). © Springer-Verlag London Ltd 2010. | URI: | https://open.uns.ac.rs/handle/123456789/11046 | ISSN: | 2688921 | DOI: | 10.1007/s10103-010-0774-0 |
Appears in Collections: | MDF Publikacije/Publications |
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