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Effect of the Exponential Curing of Composite Resin on the Microtensile Dentin Bond Strength of Adhesives
| Content Provider | Semantic Scholar |
|---|---|
| Author | Seong, Sang Hwan Seo, Duck-Kyu Lee, In-Bog Son, Ho-Hyun Cho, Byeong-Hoon |
| Copyright Year | 2010 |
| Abstract | Objectives: Rapid polymerization of overlying composite resin causes high polymerization shrinkage stress at the adhesive layer. In order to alleviate the shrinkage stress, increasing the light intensity over the first 5 seconds was suggested as an exponential curing mode by an LED light curing unit (Elipar FreeLight2, 3M ESPE). In this study, the effectiveness of the exponential curing mode on reducing stress was evaluated with measuring microtensile bond strength of three adhesives after the overlying composite resin was polymerized with either continuous or exponential curing mode. Methods: Scotchbond Multipurpose Plus (MP, 3M ESPE), Single Bond 2 (SB, 3M ESPE), and Adper Prompt (AP, 3M ESPE) were applied onto the flat occlusal dentin of extracted human molar. The overlying hybrid composite (Denfil, Vericom, Korea) was cured under one of two exposing modes of the curing unit. At 48h from bonding, microtensile bond strength was measured at a crosshead speed of 1.0 mm/min. The fractured surfaces were observed under FE-SEM. Results: There was no statistically significant difference in the microtensile bond strengths of each adhesive between curing methods (Two-way ANOVA, p > 0.05). The microtensile bond strengths of MP and SB were significantly higher than that of AP (p < 0.05). Mixed failures were observed in most of the fractured surfaces, and differences in the failure mode were not observed among groups. Conclusion: The exponential curing method had no beneficial effect on the microtensile dentin bond strengths of three adhesives compared to continuous curing method. [J Kor Acad Cons Dent 35(2):125-133, 2010] |
| File Format | PDF HTM / HTML |
| Alternate Webpage(s) | https://synapse.koreamed.org/Synapse/Data/PDFData/0185JKACD/jkacd-35-125.pdf |
| Language | English |
| Access Restriction | Open |
| Subject Keyword | Adhesives Cardiomyopathies Composite Resins Denture, Partial, Fixed, Resin-Bonded Dietary Iron Extraction Failure cause Fracture Hodgkin Disease Millimeter Per Minute Multistage interconnection networks Occlusal surface of tooth Pyschological Bonding Resin Sandy Bridge activated T cell autonomous cell death exponential light intensity |
| Content Type | Text |
| Resource Type | Article |
