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Remaining Unreacted Methacrylate Groups in Resin-Based Composite With Respect to Sample Preparation and Storing Conditions Using Micro-Raman Spectroscopy
dc.creator | Miletić, Vesna | |
dc.creator | Santini, Ario | |
dc.date.accessioned | 2020-07-02T12:21:33Z | |
dc.date.available | 2020-07-02T12:21:33Z | |
dc.date.issued | 2008 | |
dc.identifier.issn | 1552-4973 | |
dc.identifier.uri | https://smile.stomf.bg.ac.rs/handle/123456789/1450 | |
dc.description.abstract | The aim of this study was to measure degree of conversion (DC) of resin-based composites (RBCs) using micro-Raman spectroscopy followed by different sample preparation procedures and storing conditions. Ninety samples of Tetric EvoCeram (Ivoclar Vivadent, Schaan, Liechtenstein) were prepared in standardized molds and cured with a high powered LED light-curing unit, bluephase (R)) (Ivoclar Vivadent, Schaan, Liechtenstein) for 20 s. Samples were allocated to eight groups. DC of groups I and 2 was recorded without or after polishing. DC in groups 3 and 4 was recorded from vertically sectioned samples versus "split" samples. DC in groups 5-8 was recorded after storing samples at room temperature and humidity, in 90 +/- 2% humidity at 37 +/- 1 degrees C, distilled water at 37 +/- 1 degrees C or buffered incubation medium (BIM) at 37 +/- 1 degrees C for 24 h. Mean values of DC in polished and unpolished samples were 63.6% (+/- 3.2%) and 54.7% (+/- 5.2%), respectively (p lt 0.0001). There was no significant difference in DC after sample-sectioning (p > 0.05). Significantly higher DC values were obtained after storing samples in BIM (76.8% +/- 2.1%) than in distilled water (59.7% +/- 5.7%), extreme humidity (60.3% +/- 3.9%) or in room conditions (63.6% +/- 3.2%) (P lt 0.001). DC of an RBC measured by micro-Raman spectroscopy may be affected by differences in sample preparation and storing conditions, making it difficult to extrapolate data from in vitro studies into clinically relevant information. | en |
dc.publisher | Wiley, Hoboken | |
dc.rights | restrictedAccess | |
dc.source | Journal of Biomedical Materials Research Part B: Applied Biomaterials | |
dc.subject | micro-Raman spectroscopy | en |
dc.subject | degree of conversion | en |
dc.subject | resin-based composites | en |
dc.subject | adhesive restorations | en |
dc.subject | dental materials | en |
dc.title | Remaining Unreacted Methacrylate Groups in Resin-Based Composite With Respect to Sample Preparation and Storing Conditions Using Micro-Raman Spectroscopy | en |
dc.type | article | |
dc.rights.license | ARR | |
dcterms.abstract | Милетић, Весна; Сантини, Aрио; | |
dc.citation.volume | 87B | |
dc.citation.issue | 2 | |
dc.citation.spage | 468 | |
dc.citation.epage | 474 | |
dc.citation.other | 87B(2): 468-474 | |
dc.citation.rank | M22 | |
dc.identifier.wos | 000260355000021 | |
dc.identifier.doi | 10.1002/jbm.b.31128 | |
dc.identifier.pmid | 18506816 | |
dc.identifier.scopus | 2-s2.0-55049139944 | |
dc.type.version | publishedVersion |