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Title: | Influence Of Preheating Procedure And Polymerization Modes On Degree Of Conversion Of Contemporary Resin Composites | Other Titles: | Ön Isıtma İşlemi ve Polimerizasyon Modlarının Güncel Rezin Kompozitlerin Dönüşüm Derecesi Üzerindeki Etkisi | Authors: | Yenidünya, Ö.G. Erdem, A. Akgül, N. Yazkan, B. Özcan, M. |
Keywords: | Bulk Fill Composite Degree Of Conversion Ftir Polymerization Mode Preheating Thermoviscousity |
Publisher: | Ataturk Universitesi | Abstract: | Objective: To evaluate the effects of preheating procedure and polymerization modes on degree of conversion (DC) of resin composites. Methods: Three different types of composites-a conventional (GrandioSO-[GSO]), a bulkfill (GrandioSO x-tra-[GSX]), and a thermoviscous bulkfill (VisCalor bulk-[VCB])-were investigated. Three specimens were prepared for each combination of the variables (composite type*preheating procedure*polymerization mode). Photo-polymerization was performed using an LED operated in standard (SM), high power plus (HM), and x-tra power (XM) modes. DC was measured with Fourier Transform Infrared Spectroscopy after 5 min and 24 h post-irradiation. Furthermore, three-way analysis of variance followed by a Tukey test at a significance level of P <.05 were performed to compare the DC values. Results: Considering the DC values at two post-irradiation time, preheated VCB group polymerized with HM gave the highest DC value, while GSX cured with XM, regardless of the preheating exhibited the lowest one. Preheating application caused a statistically significant increase in the DC values of the VCB*SM, VCB*HM, and GSO*HM groups at both evaluation periods, and the GSX*SM group at 24h post-irradiation. Regarding the polymerization mode, the ranking depending on the significant differences among all preheated composites tested at both time intervals was HM > SM > XM. Conclusion: Preheating generally exhibited favorable effects on the DC of all tested composites, with the most significant impact observed in VCB. Additionally, polymerization with x-tra power mode is not recommended to achieve a sufficient DC required for clinically acceptable restorations. © 2025, Ataturk Universitesi. All rights reserved. | URI: | https://doi.org/10.17567/currresdentsci.1617446 https://hdl.handle.net/11499/59291 |
ISSN: | 2822-2555 |
Appears in Collections: | Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collection |
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