McInnes bleaching agent decreases the microhardness of enamel and Remin Pro® used in the study causes an increase in the microhardness of bleached enamel.

Background and objectives: Among the bacterial species which most often cause endodontic failure, Enterococcus faecalis is the most important. This study compared the antibacterial efficacy of tea tree oil with 3% sodium hypochlorite and 2% chlorhexidine as a root canal irrigant, against E. faecalis.

Delayed light polymerization of the dual-cured composite base reduced the microleakage in class II open-sandwich restorations.

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