Abstract:

Objective　To evaluate the beagles′pulp response following direct pulp capping with Clearfil SE BOND (SB). Methods　130 sound teeth were used. 120 had their pulps mechanically exposed and were divided in two groups. In group A, teethwere capped with SB. In group B, teethwere capped with calcium hydroxide (CH). The left 10 teethwere used as control. After 7, 30 and 90 days, the teethwere extracted and processed for light microscopical examination.Results　In 7 day observa- tion period, inflammatory reaction in SB group was slighter than that of CHgroup, but the difference was statistical insignificant. In the 30 day and 90 day observation period, inflammatory reaction was slight in both groups, but specimens with dentin bridge formation was significantly less in SB group than in CH group (P<0.05).Conclusion　SB showed acceptable biocompatibility with pulp, but its ability to induce hard tissue barrier on pulp exposure is weaker than CH.

Key words: Clearfil SE BOND, direct pulp capping, calcium hydroxide