fa Effect of Endodontic Irrigants on Microtensile Bond Strength to Dentin After Thermocycling and Long-Term Water Storage ترمیمی Cosmetic and Restorative Dentistry پژوهشي Research <p> <strong>Objective:</strong> </p><p> The bond strength of adhesives in irrigated dentin behaves differently over time. The aim of this study was to evaluate the influence of long-term water storage and thermocycling on the microtensile bond strength of adhesive systems to dentin irrigated with endodontic solutions. <strong></strong></p><p> <strong>Materials and Methods:</strong></p><p>  Sixty human molars were used after removal of the occlusal portion and exposure of the dentin by grinding. The specimens were irrigated with 2.5% NaOCl for 30 minutes and then 17% EDTA for 5 minutes and assigned to six groups according to the adhesive system (n=10): G1 and G2–Clearfil SE Bond G3 and G4–Single Bond 2 and G5 and G6–XP Bond. The teeth were restored with composite and were subjected to water storage for different time periods. G1, G3 and G5 were stored for 24 h G2, G4 and G6 were stored for 6 months and were subjected to thermocycling (12,000 cycles, 5°C to 55°C, 500 cycles per week for 6 months). After storage, the tooth/restoration assembly was sectioned to obtain four sticks of approximately 1 mm2, for microtensile bond strength testing. The results were analyzed by two-way ANOVA and Tukey’s test. </p><p> <strong>Results:</strong></p><p>  Significant differences were observed among the adhesives (p<0.01). No significant differences were observed in the microtensile bond strength between samples after 24 hours of storage without thermocycling and after 6-month storage with 12,000 cycles (p<0.05). </p><p> <strong>Conclusion:</strong></p><p>  The bond strengths of G5 and G6 after irrigation with 2.5% NaOCl and 17% EDTA were significantly different from those of other groups. Long-term water storage/thermocycling had no effect on bond strength to dentin. </p><hr><p></p><p> <strong>Source: </strong>Journal of Dentistry of Tehran University of Medical Science</p><p><a href="http://jdt.tums.ac.ir/index.php/jdt/article/view/1675.pdf" target="_blank"><font color="#0000ff"> Full Text</font></a></p> Microtensile Bond Strength; Self-etch; Total-etch; NaOCl, EDTA 0 0 http://idai.ir/browse.php?a_code=A-10-32-2652&slc_lang=fa&sid=1 Daniel Galafassi 100319475328460012492 100319475328460012492 No Department of Operative Dentistry, Ribeirão Preto School of Dentistry, University of São Paulo, Ribeirão Preto, Brazil Vivian Colucci 100319475328460012493 100319475328460012493 No Department of Operative Dentistry, Ribeirão Preto School of Dentistry, University of São Paulo, Ribeirão Preto, Brazil Doglas Cecchin 100319475328460012494 100319475328460012494 No Department of Endodontics, University of Passo Fundo, Passo Fundo, Brazil Camila Scatena 100319475328460012495 100319475328460012495 No Ribeirão Preto School of Dentistry, University of São Paulo, Ribeirão Preto, Brazil Telma N. Nascimento 100319475328460012496 100319475328460012496 No Department of Operative Dentistry, Ribeirão Preto School of Dentistry, University of São Paulo, Ribeirão Preto, Brazil Silmara A. M. Corona silmaracorona@uol.com.br 100319475328460012497 100319475328460012497 Yes Department of Operative Dentistry, Ribeirão Preto School of Dentistry, University of São Paulo, Ribeirão Preto, Brazil