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Volume 7 Issue 10 (October, 2019)

Original Articles

Comparative Evaluation of bond strength of total etch and self etch adhesives before and after contamination with saliva
Butta Viswanath, Buggaveeti Pradeep Kumar

Background: Adhesive dentistry has been progressing rapidly over the past decade. It is very important to maintain dry operating field for the application of bonding agent. The presence of moisture can alter the bond strength of the bonding agents. The present study was conducted to evaluate the bond strength of self- and total-etch adhesive systems on enamel and dentin before and after contamination with saliva. Material and methods: The present study was carried out on 90 orthodontically extracted premolars with the aim to evaluate the effect of saliva contamination on the bonding strength of self- and total-etch adhesive systems on enamel and dentin. Adhesive systems used in the study were Self-etch adhesive system and Total-etch adhesive system. Each group was further subdivided randomly into three subgroups of fifteen teeth each depending on the type of contamination subjected to and the steps in the bonding sequence when contamination occurred that was before or after adhesive application. The bonding strength was measured in a universal testing machine at a crosshead speed of 1 mm/min.The collected data were statistically analyzed using two-way ANOVA. Results: The result of the study shows that comparison of mean bonding strength of total-etch adhesive which was applied after saliva contamination is less than self-etch adhesive applied after saliva contamination. The bond strength of total-etch adhesive applied before saliva contamination is more than the bond strength of self-etch adhesive applied before saliva contamination. The mean bond strength of total-etch adhesive control is less than self-etch adhesive control group. Conclusion: Our study concluded that the bonding strength of self-etch adhesive system was better than the total-etch adhesive system. Key words: Adhesive, total-etch, self-etch

 
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