Effects of different root canal irrigation methods on apical microleakage
Objective The aim of the study was to compare the effects of 5 root canal irrigation methods on root canal microleakage using glucose microleakage method.Methods 60 eligible isolated first or second mandibular premolars were selected.After conventional root canal preparation,the tecth were randomly divided into 6 groups with root canal irrigation in different ways:conventional irrigation(Group A),ultrasonic activated ir-rigation group(Group B),Nd∶YAG laser group(Group C),PIPS(Group D),SWEEPS(Group E)and negative con-trol group(Group F).Following this,AH-Plus root canal sealer and hot gutta-percha were vertically compression filled the root canals,the samples were placed in the glucose microleakage model.Glucose leakage was measured and statistically analyzed on the 1st,2nd,4th,7th,10th,15th,20th,25th and 30th days.Results Microleakage oc-curred in all groups except the negative control group(Group F).There was no significant difference in the amount of leakage among the experimental groups within one week after filling(P＞0.05).On the 10th day,there was no significant difference among Group B,D and E(P＞0.05),and it was significantly lower than that of Group A and C(P＜0.05).On the 15th,20th,25th and 30th day,there was no significant difference among Group A,B and C(P＞0.05),and it was significantly higher than Group D and E(P＜0.05).Within 30 days,the microleakage value in Group D and E had no significant difference(P＞0.05),and were significantly lower than that of the control group(group A)(P＜0.05).Conclusion PIPS and SWEEP irrigation technology can improve the sealing ability of root canal filling and reduce the microleakage;Nd∶YAG laser and ultrasonic activated irrigation have no obvious effect on apical sealing ability.
万方数据
维普
