The Effect of the Resin Type and Filling Placement Techniques on the Degree of Conversion of Various Resin-Based Composites
The degree of conversion (DC) is crucial in determining the mechanical and clinical performance of resin-based composites (RBCs). This in vitro study aimed to evaluate the effect of the resin type and placement technique on the DC of RBCs (micro-hybrid, packable, hybrid, ormocer-based and flowable)...
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2024-12-01
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| author | Ayse Nurcan Duman Pinar Cevik Arife Doğan |
| author_facet | Ayse Nurcan Duman Pinar Cevik Arife Doğan |
| author_sort | Ayse Nurcan Duman |
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| description | The degree of conversion (DC) is crucial in determining the mechanical and clinical performance of resin-based composites (RBCs). This in vitro study aimed to evaluate the effect of the resin type and placement technique on the DC of RBCs (micro-hybrid, packable, hybrid, ormocer-based and flowable) polymerized with a second-generation LED light-curing unit (LCU). A total of 75 RBC samples were divided into three groups. Each RBC was placed into 4 mm diameter and 2 and 8 mm heigh Teflon molds with conventional standard, bulk, and incremental techniques (n = 5) and polymerized by LED LCU (229.153 mW/cm<sup>2</sup>) using the standard mode. After 24 h, DC was determined by FTIR spectrophotometry. The data were analyzed with two-way ANOVA and Tukey’s HSD test (<i>p</i> < 0.05). The DC of the RBCs varied between 62.8 and 29.2%. While the same DC was obtained for 2 mm samples at the top and the bottom surfaces, the DC of the 8 mm samples gradually diminished from the top surface to the bottom surface. Significant differences were observed in the DC of the RBCs. An optimal DC was obtained for packable, micro-hybrid and ormocer-based RBCs polymerized by LED LCU with the recommended curing times. Considering that the polymerization process is versatile, further in vitro studies are needed. |
| format | Article |
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| issn | 2076-3417 |
| language | English |
| publishDate | 2024-12-01 |
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| spelling | doaj-art-bb13f92e1fb34cd292fa9612e368a36f2025-08-20T01:55:28ZengMDPI AGApplied Sciences2076-34172024-12-0114231121510.3390/app142311215The Effect of the Resin Type and Filling Placement Techniques on the Degree of Conversion of Various Resin-Based CompositesAyse Nurcan Duman0Pinar Cevik1Arife Doğan2Department of Prosthodontics, Faculty of Dentistry, Gazi University, Ankara 06490, TürkiyeDepartment of Prosthodontics, Faculty of Dentistry, Gazi University, Ankara 06490, TürkiyeDepartment of Prosthodontics, Faculty of Dentistry, Gazi University, Ankara 06490, TürkiyeThe degree of conversion (DC) is crucial in determining the mechanical and clinical performance of resin-based composites (RBCs). This in vitro study aimed to evaluate the effect of the resin type and placement technique on the DC of RBCs (micro-hybrid, packable, hybrid, ormocer-based and flowable) polymerized with a second-generation LED light-curing unit (LCU). A total of 75 RBC samples were divided into three groups. Each RBC was placed into 4 mm diameter and 2 and 8 mm heigh Teflon molds with conventional standard, bulk, and incremental techniques (n = 5) and polymerized by LED LCU (229.153 mW/cm<sup>2</sup>) using the standard mode. After 24 h, DC was determined by FTIR spectrophotometry. The data were analyzed with two-way ANOVA and Tukey’s HSD test (<i>p</i> < 0.05). The DC of the RBCs varied between 62.8 and 29.2%. While the same DC was obtained for 2 mm samples at the top and the bottom surfaces, the DC of the 8 mm samples gradually diminished from the top surface to the bottom surface. Significant differences were observed in the DC of the RBCs. An optimal DC was obtained for packable, micro-hybrid and ormocer-based RBCs polymerized by LED LCU with the recommended curing times. Considering that the polymerization process is versatile, further in vitro studies are needed.https://www.mdpi.com/2076-3417/14/23/11215blue light-emitting diodesdegree of conversionFTIRplacement techniquesresin-based composite |
| spellingShingle | Ayse Nurcan Duman Pinar Cevik Arife Doğan The Effect of the Resin Type and Filling Placement Techniques on the Degree of Conversion of Various Resin-Based Composites Applied Sciences blue light-emitting diodes degree of conversion FTIR placement techniques resin-based composite |
| title | The Effect of the Resin Type and Filling Placement Techniques on the Degree of Conversion of Various Resin-Based Composites |
| title_full | The Effect of the Resin Type and Filling Placement Techniques on the Degree of Conversion of Various Resin-Based Composites |
| title_fullStr | The Effect of the Resin Type and Filling Placement Techniques on the Degree of Conversion of Various Resin-Based Composites |
| title_full_unstemmed | The Effect of the Resin Type and Filling Placement Techniques on the Degree of Conversion of Various Resin-Based Composites |
| title_short | The Effect of the Resin Type and Filling Placement Techniques on the Degree of Conversion of Various Resin-Based Composites |
| title_sort | effect of the resin type and filling placement techniques on the degree of conversion of various resin based composites |
| topic | blue light-emitting diodes degree of conversion FTIR placement techniques resin-based composite |
| url | https://www.mdpi.com/2076-3417/14/23/11215 |
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