Degree of conversion of micro-hybrid, nano-hybrid and Ormocer composites using LED and QTH light-curing units
Background and Aims: The aim of this study was to measure the degree of conversion (DC) of three types of composite resins (micro-hybrid, nano-hybrid and Ormocer) with different light curing units (LED LCU and QTH LCU) in two depths.Materials and Methods: Three commercially available dental resin co...
| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | fas |
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Tehran University of Medical Sciences
2012-01-01
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| Series: | Journal of Dental Medicine |
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| Online Access: | http://journals.tums.ac.ir/abs/20661 |
| _version_ | 1811300026744307712 |
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| author | Seied Mostafa Fatemi Akbar Fazel Najafabadi Mohammad Erfan Tahereh Sadat Jafarzadeh Kashi Marjan Behroozibakhsh Haleh Hali Hosein Bagheri Gorgani |
| author_facet | Seied Mostafa Fatemi Akbar Fazel Najafabadi Mohammad Erfan Tahereh Sadat Jafarzadeh Kashi Marjan Behroozibakhsh Haleh Hali Hosein Bagheri Gorgani |
| author_sort | Seied Mostafa Fatemi |
| collection | DOAJ |
| description | Background and Aims: The aim of this study was to measure the degree of conversion (DC) of three types of composite resins (micro-hybrid, nano-hybrid and Ormocer) with different light curing units (LED LCU and QTH LCU) in two depths.Materials and Methods: Three commercially available dental resin composites were used in this study: (Tetric Ceram, Ivoclar Vivadent, Liechtenstein-A2 shade), (Tetric Evoceram, Ivoclar Vivadent, Liechtenstein-A2 shade), (Ceram X, Dentsply, Germany-M2 shade). Specimens were divided into two groups, 5 specimens were photo-activated by QTH unit (Coltolux 75-Colten) and the other five specimens were cured by LED (Demi-Kerr). Then each specimen was sectioned at the top surface and at 2-mm depth. The DC was measured by FT-IR(Bruker-tensor 27). The data were analyzed by 3-way ANOVA test.Results: There was significant difference between tested composite resins (P<0.001). The results of top surfaces were significantly different from those observed at 2-mm depth (P<0.001). The type of curing unit affected the polymerization of Ceram X resin composite.Conclusion: This study showed a significant difference in the degree of conversion in different thicknesses within three groups of resin composites. |
| first_indexed | 2024-04-13T06:45:08Z |
| format | Article |
| id | doaj.art-d46aa66485d04e6caa4f8dae167abba4 |
| institution | Directory Open Access Journal |
| issn | 1024-641X 2008-2444 |
| language | fas |
| last_indexed | 2024-04-13T06:45:08Z |
| publishDate | 2012-01-01 |
| publisher | Tehran University of Medical Sciences |
| record_format | Article |
| series | Journal of Dental Medicine |
| spelling | doaj.art-d46aa66485d04e6caa4f8dae167abba42022-12-22T02:57:38ZfasTehran University of Medical SciencesJournal of Dental Medicine1024-641X2008-24442012-01-012528590Degree of conversion of micro-hybrid, nano-hybrid and Ormocer composites using LED and QTH light-curing unitsSeied Mostafa FatemiAkbar Fazel NajafabadiMohammad ErfanTahereh Sadat Jafarzadeh KashiMarjan BehroozibakhshHaleh HaliHosein Bagheri GorganiBackground and Aims: The aim of this study was to measure the degree of conversion (DC) of three types of composite resins (micro-hybrid, nano-hybrid and Ormocer) with different light curing units (LED LCU and QTH LCU) in two depths.Materials and Methods: Three commercially available dental resin composites were used in this study: (Tetric Ceram, Ivoclar Vivadent, Liechtenstein-A2 shade), (Tetric Evoceram, Ivoclar Vivadent, Liechtenstein-A2 shade), (Ceram X, Dentsply, Germany-M2 shade). Specimens were divided into two groups, 5 specimens were photo-activated by QTH unit (Coltolux 75-Colten) and the other five specimens were cured by LED (Demi-Kerr). Then each specimen was sectioned at the top surface and at 2-mm depth. The DC was measured by FT-IR(Bruker-tensor 27). The data were analyzed by 3-way ANOVA test.Results: There was significant difference between tested composite resins (P<0.001). The results of top surfaces were significantly different from those observed at 2-mm depth (P<0.001). The type of curing unit affected the polymerization of Ceram X resin composite.Conclusion: This study showed a significant difference in the degree of conversion in different thicknesses within three groups of resin composites.http://journals.tums.ac.ir/abs/20661ConversionOrmocerResin composite |
| spellingShingle | Seied Mostafa Fatemi Akbar Fazel Najafabadi Mohammad Erfan Tahereh Sadat Jafarzadeh Kashi Marjan Behroozibakhsh Haleh Hali Hosein Bagheri Gorgani Degree of conversion of micro-hybrid, nano-hybrid and Ormocer composites using LED and QTH light-curing units Journal of Dental Medicine Conversion Ormocer Resin composite |
| title | Degree of conversion of micro-hybrid, nano-hybrid and Ormocer composites using LED and QTH light-curing units |
| title_full | Degree of conversion of micro-hybrid, nano-hybrid and Ormocer composites using LED and QTH light-curing units |
| title_fullStr | Degree of conversion of micro-hybrid, nano-hybrid and Ormocer composites using LED and QTH light-curing units |
| title_full_unstemmed | Degree of conversion of micro-hybrid, nano-hybrid and Ormocer composites using LED and QTH light-curing units |
| title_short | Degree of conversion of micro-hybrid, nano-hybrid and Ormocer composites using LED and QTH light-curing units |
| title_sort | degree of conversion of micro hybrid nano hybrid and ormocer composites using led and qth light curing units |
| topic | Conversion Ormocer Resin composite |
| url | http://journals.tums.ac.ir/abs/20661 |
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