fa Immediate bonding properties of universal adhesives to dentine ترمیمی Cosmetic and Restorative Dentistry پژوهشي Research <p> <strong>Objectives</strong></p><p>  To evaluate the dentine microtensile bond strength (μTBS), nanoleakage (NL), degree of conversion (DC) within the hybrid layer for etch-and-rinse and self-etch strategies of universal simplified adhesive systems. </p><p> <strong>Methods</strong> </p><p> forty caries free extracted third molars were divided into 8 groups for μTBS (n=5), according to the adhesive and etching strategy: Clearfil SE Bond [CSE] and Adper Single Bond 2 [SB], as controls Peak Universal Adhesive System, self-etch [PkSe] and etch-and-rinse [PkEr] Scotchbond Universal Adhesive, self-etch [ScSe] and etch-and-rinse [ScEr] All Bond Universal, self-etch [AlSe] and etch-and-rinse [AlEr]. After restorations were constructed, specimens were stored in water (37°C/24h) and then resin–dentine sticks were prepared (0.8mm2). The sticks were tested under tension at 0.5mm/min. Some sticks from each tooth group were used for DC determination by micro-Raman spectroscopy or nanoleakage evaluation (NL). The pH for each solution was evaluated using a pH metre. Data were analyzed with one-way ANOVA and Tukey's test (α=0.05). </p><p> <strong>Results</strong> </p><p> For μTBS, only PkSe and PkEr were similar to the respective control groups (p>0.05). AlSe showed the lowest μTBS mean (p<0.05). For NL, ScEr, ScSe, AlSe, and AlEr showed the lowest NL similar to control groups (p<0.05). For DC, only ScSe showed lower DC than the other materials (p<0.05). </p><p> <strong>Conclusions</strong></p><p>  Performance of universal adhesives was shown to be material-dependent. The results indicate that this new category of universal adhesives used on dentine as either etch-and-rinse or self-etch strategies were inferior as regards at least one of the properties evaluated (μTBS, NL and DC) in comparison with the control adhesives (CSE for self-etch and SB for etch-and-rinse). </p><hr><p></p><p> <strong>Source: </strong>Journal of Dentistry</p><p> <a href="http://www.jodjournal.com/article/S0300-5712(13)00073-0/abstract" target="_blank"><font color="#0000ff">Full Text</font></a></p> Microtensile bond strength, Nanoleakage, Degree of conversion, Etch-and-rinse, Self-etch, Universal simplified adhesive systems 0 0 http://idai.ir/browse.php?a_code=A-10-32-2146&slc_lang=fa&sid=1 Miguel Angel Muñoz 100319475328460010077 100319475328460010077 No School of Dentistry, Department of Restorative Dentistry, State University of Ponta Grossa, Ponta Grossa, Paraná, Brazil Issis Luque 100319475328460010078 100319475328460010078 No School of Dentistry, Department of Restorative Dentistry, State University of Ponta Grossa, Ponta Grossa, Paraná, Brazil Viviane Hass 100319475328460010079 100319475328460010079 No School of Dentistry, Department of Restorative Dentistry, State University of Ponta Grossa, Ponta Grossa, Paraná, Brazil Alessandra Reis 100319475328460010080 100319475328460010080 No School of Dentistry, Department of Restorative Dentistry, State University of Ponta Grossa, Ponta Grossa, Paraná, Brazil Alessandro Dourado Loguercio 100319475328460010081 100319475328460010081 Yes School of Dentistry, Department of Restorative Dentistry, State University of Ponta Grossa, Ponta Grossa, Paraná, Brazil Nara Hellen Campanha Bombarda 100319475328460010082 100319475328460010082 No School of Dentistry, Department of Restorative Dentistry, State University of Ponta Grossa, Ponta Grossa, Paraná, Brazil