Study on the apical sealing property for three kinds of root canal sealers in vitro
Objective To evaluate the effect of HiFlow,a new bioceramic root canal sealer,by comparing the apical sealing properties of HiFlow、iRoot SP and AH-Plus root canal sealers in vitro.Methods 46 single-rooted premolars were selected and randomly divided into 3 experimental groups(n=12)and a control group(n=12).The experimental group was filled with HiFlow sealer,iRoot SP sealer,AH Plus sealer in combination with gum tips using single cone obturation technique;the control group was filled with a single cone obturation tech-nique.10 samples from each group were selected and treated using the dye penetration method.The length of dye penetration was measured under a stereomicroscope to compare the length of dye penetration in each group.The level of microleakage at the root apical level was measured and compared between the different groups.The re-maining samples from the experimental group were cross-sectioned and observed in profile with a scanning elec-tron microscopy.Results Dye infiltration was observed in the root canals of the HiFlow group,iRoot SP group,AH Plus group,and control group,with dye infiltration lengths in the order of(1.027±0.04)mm,(1.079±0.05)mm,(1.132±0.12)mm,and(2.46±0.75)mm,respectively.The difference in dye penetration length among the three experimental groups was not statistically significant(P＞0.05),and the dye penetration length in the experimental groups were all significantly smaller than that in the control group(P＜0.05).Through scanning electron micros-copy,it was observed that there were gaps between the root canal sealers and the dentin of the root canal wall in all three experimental groups,with the largest gap in the AH Plus group and the smallest gap in the HiFlow group.Conclusion None of the three kinds of root canal sealers could completely seal the root canal,while HiFlow had the best apical sealing performance.
Root canal sealerHiFlow sealeriRoot SP sealerAH Plus sealerApical microleakage
万方数据
维普
