Influence of Preheating Procedure and Polymerization Modes on Degree of Conversion of Contemporary Resin Composites
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 -...
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Atatürk University
2025-01-01
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| Series: | Current Research in Dental Sciences |
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| Online Access: | https://dergipark.org.tr/tr/download/article-file/4510513 |
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| author | Mutlu Özcan Başak Yazkan Nilgün Akgül Ahmet Erdem Özge Gizem Yenidünya |
| author_facet | Mutlu Özcan Başak Yazkan Nilgün Akgül Ahmet Erdem Özge Gizem Yenidünya |
| author_sort | Mutlu Özcan |
| collection | DOAJ |
| description | 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.Keywords: bulk fill composite; degree of conversion; FTIR; polymerization mode; preheating; thermoviscousity |
| format | Article |
| id | doaj-art-4733b333b3004bc7ae7341c5471f11aa |
| institution | Kabale University |
| issn | 2822-2555 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | Atatürk University |
| record_format | Article |
| series | Current Research in Dental Sciences |
| spelling | doaj-art-4733b333b3004bc7ae7341c5471f11aa2025-02-03T10:38:09ZengAtatürk UniversityCurrent Research in Dental Sciences2822-25552025-01-01351657010.17567/currresdentsci.161744655Influence of Preheating Procedure and Polymerization Modes on Degree of Conversion of Contemporary Resin CompositesMutlu ÖzcanBaşak Yazkan0Nilgün Akgül1Ahmet Erdem2Özge Gizem Yenidünya3AYDIN ADNAN MENDERES UNIVERSITY, FACULTY OF DENTISTRYPAMUKKALE UNIVERSITY, FACULTY OF DENTISTRY, DEPARTMENT OF CLINICAL SCIENCES, DEPARTMENT OF RESTORATIVE DENTISTRYPAMUKKALE ÜNİVERSİTESİ, İLERİ TEKNOLOJİ UYGULAMA VE ARAŞTIRMA MERKEZİMERSİN ÜNİVERSİTESİ, DİŞ HEKİMLİĞİ FAKÜLTESİ, KLİNİK BİLİMLER BÖLÜMÜ, RESTORATİF DİŞ TEDAVİSİ ANABİLİM DALIObjective: 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.Keywords: bulk fill composite; degree of conversion; FTIR; polymerization mode; preheating; thermoviscousityhttps://dergipark.org.tr/tr/download/article-file/4510513bulk fill compositedegree of conversionftirpolymerization modepreheating |
| spellingShingle | Mutlu Özcan Başak Yazkan Nilgün Akgül Ahmet Erdem Özge Gizem Yenidünya Influence of Preheating Procedure and Polymerization Modes on Degree of Conversion of Contemporary Resin Composites Current Research in Dental Sciences bulk fill composite degree of conversion ftir polymerization mode preheating |
| title | Influence of Preheating Procedure and Polymerization Modes on Degree of Conversion of Contemporary Resin Composites |
| title_full | Influence of Preheating Procedure and Polymerization Modes on Degree of Conversion of Contemporary Resin Composites |
| title_fullStr | Influence of Preheating Procedure and Polymerization Modes on Degree of Conversion of Contemporary Resin Composites |
| title_full_unstemmed | Influence of Preheating Procedure and Polymerization Modes on Degree of Conversion of Contemporary Resin Composites |
| title_short | Influence of Preheating Procedure and Polymerization Modes on Degree of Conversion of Contemporary Resin Composites |
| title_sort | influence of preheating procedure and polymerization modes on degree of conversion of contemporary resin composites |
| topic | bulk fill composite degree of conversion ftir polymerization mode preheating |
| url | https://dergipark.org.tr/tr/download/article-file/4510513 |
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