| Autor: |
Larissa Costa, Santos, Ravana Angelini, Sfalcin, Eugenio José, Garcia, Fátima Antônia Aparecida, Zanin, Aldo, Brugnera Junior, Daniela Fátima Teixeira, Silva, Anna Carolina Ratto Tempestini, Horliana, Kristianne Porta Santos, Fernandes, Raquel Agnelli, Mesquita-Ferrari, Sandra Kalil, Bussadori |
| Rok vydání: |
2019 |
| Předmět: |
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| Zdroj: |
Journal of lasers in medical sciences. 10(4) |
| ISSN: |
2008-9783 |
| Popis: |
Introduction: Microleakage has been reported to cause dentin hypersensitivity because of the passage of bacteria and their products through the restoration-tooth interface and is one of the main reasons for replacement of restorations. CO(2) laser can be used for treatment of dentin hypersensitivity. Thus, this study aimed to evaluate in vitro the microleakage in composite restorations following surface pretreatment with acid etching and CO(2) laser. Methods: Twelve human caries-free primary molars were selected. Class II cavities were prepared on occlusal mesial and occlusal distal surfaces. Specimens were randomly divided into four groups (n=6): Group 1 (G1) – 37% phosphoric acid gel etching + Beautiful-Bulk Restorative – Giomer (Shofu Inc); Group 2 (G2) – 37% phosphoric acid gel etching + SDR Bulk-Fill Flow (Dentsply); Group 3 (G3) – CO(2) laser irradiation + Beautiful-Bulk Restorative – Giomer (Shofu Inc); Group 4 (G4) – CO(2) laser irradiation + SDR Bulk-Fill Flow (Dentsply). Surfaces were restored with bonding agent (Natural Bond DE, DFL). Specimens were cut longitudinally and immersed in 0.5% methylene blue solution for 4 hours. Microleakage scores were assessed under a magnifying glass at x3,5 and qualitatively analyzed by scanning electron microscope (SEM). Data were analyzed using nonparametric Wilcoxon test (P < 0.05). Results: Scores prevailed between 0 and 2, however, no statistically significant difference was found among the groups (P = 0.05). Conclusion: It could be concluded that all composite resins bulk fill did not show significant difference among them regarding microleakage using either CO(2) laser or 37% phosphoric acid etching. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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