Effect of the timing of post space preparation after root canal filling on apical sealing ability of iRoot SP single-tip obturation
Objective To investigate the effect of different post channel preparation timing on the apical closure of iRootSP single-tip root canal obturation.Methods Seventy-five single-rooted teeth were collected and divided randomly into 9 groups:group A1,A2,and A3 were filled with AH-Plus+hot gutta-percha;B1,B2,and B3 were filled with iRoot SP+single tip root filling;group A4 was filled with hot gutta-percha root filling;group B4 was filled with single apical root filling;Group C was only prepared without filling.In group A1 and B1,post space preparation was performed immediately,while in group A2 and B2,post space preparation was delayed after 1 week,and in group A3,B3,A4,and B4,no post space preparation was performed.Group A4 and B4 were used as positive control group,and group C was used as negative control group.Dye microleakage test and scanning electron microscope observation were used to evaluate the microleakage in the apical region.Results The dye of the experimental group and the positive control group penetrated into the apical root,and the penetration depths were A1:(1.14±0.40)mm,A2:(1.32±0.14)mm;A3:(0.61±0.15)mm;A4:(4.75±0.16)mm;B1:(1.07±0.17)mm;B2:(1.22±0.19)mm;B3:(0.52±0.15)mm;B4:15 mm;C:0 mm.There were significant differences between group A1 and A3,group B1 and B3,group A2 and A3,group B2 and B3(P＜0.05).There was no significant differ-ence in dye penetration depth between the remaining groups(P＞0.05).iRoot SP apical sealing was similar to AH-plus,and the apical closue of the immediale space preparation and delayed space preparation after iRoot SP single-tip method of filling was identical.Conclusions The efficacy of iRoot SP single-tip root canal obturation is simi-lar to that of AH-Plus continuous wave vertical compression root filling with hot gutta-recha.Immediate and de-layed space preparation have no effect on the efficacy of apical obturation with iRoot SP single-tip.
iRoot SPPost space preparationClosureSingle tip filling technique
万方数据
维普
