Indian Journal of Dental Research

ORIGINAL RESEARCH
Year
: 2015  |  Volume : 26  |  Issue : 4  |  Page : 416--420

Effect of sodium hypochlorite as dentinal pretreatment on bonding strength of adhesive systems


Anelise Fernandes Montagner1, Jovito Adiel Skupien1, Marciano Freitas Borges1, Ivo Krejci2, Tissiana Bortolotto2, Alexandre Henrique Susin1 
1 Department of Restorative Dentistry, Federal University of Santa Maria, Santa Maria, RS, Brazil
2 Department of Cariology and Endodontology, University of Geneva, Geneva, Switzerland

Correspondence Address:
Alexandre Henrique Susin
Department of Restorative Dentistry, Federal University of Santa Maria, Santa Maria, RS
Brazil

Aim: This study aimed to evaluate the effect of sodium hypochlorite (NaOCl) pretreatment on bond strength of adhesive systems to different dentin regions. Materials and Methods: Forty human molars were randomly assigned according to different adhesive systems (Adper Single Bond 2; Clearfil SE Bond; Adper SE Plus; G-Bond), pretreatments (control and NaOCl - deproteinization) and dentin regions (proximal, superficial occlusal [SO] and deep occlusal [DO]), n = 5. Cylindrical cavities were performed at the proximal and occlusal surfaces of each sample. For deproteinization, 10% NaOCl was applied on conditioned dentin for 60 s before the adhesive systems application. Two occlusal and one proximal slice were obtained from each sample and submitted to the push-out test. The mode of fracture was analyzed. The data were subjected to three-way ANOVA and Tukey test (P < 0.05). Results: There was statistically significant difference between the adhesive systems (P < 0.01) and dentin regions (P < 0.01); however, the pretreatment did not significantly affect the bond strength values (P > 0.05). The bond strength values were higher for the proximal surface, followed by SO and later by DO, being influenced by the adhesive system. The two-step self-etch adhesive systems presented the highest bond strength results. Conclusion: The deproteinization pretreatment showed similar bonding effectiveness to the conventional adhesive technique. The dentin region plays a rule on the bond strength values.


How to cite this article:
Montagner AF, Skupien JA, Borges MF, Krejci I, Bortolotto T, Susin AH. Effect of sodium hypochlorite as dentinal pretreatment on bonding strength of adhesive systems.Indian J Dent Res 2015;26:416-420


How to cite this URL:
Montagner AF, Skupien JA, Borges MF, Krejci I, Bortolotto T, Susin AH. Effect of sodium hypochlorite as dentinal pretreatment on bonding strength of adhesive systems. Indian J Dent Res [serial online] 2015 [cited 2020 Apr 7 ];26:416-420
Available from: http://www.ijdr.in/article.asp?issn=0970-9290;year=2015;volume=26;issue=4;spage=416;epage=420;aulast=Montagner;type=0