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Immediate bonding properties of universal adhesives to dentine
چکیده:   (1896 مشاهده)

 Objectives

  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.

 Methods

 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).

 Results

 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).

 Conclusions

  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).


 Source: Journal of Dentistry

 Full Text

واژه‌های کلیدی: Microtensile bond strength، Nanoleakage، Degree of conversion، Etch-and-rinse، Self-etch، Universal simplified adhesive systems
     
نوع مطالعه: پژوهشي | موضوع مقاله: ترمیمی
دریافت: 1392/7/14 | پذیرش: 1394/9/25 | انتشار: 1394/9/25
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Immediate bonding properties of universal adhesives to dentine. 1. 1390;

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جامعه اسلامی دندانپزشکان Islamic Dental Association of IRAN

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