In vitro study of root canal filling density with different warm gutta-percha obturation systems
Objective To evaluate the effect of different warm gutta-percha obturation systems on root canal filling densi-ty by Micro-CT.Methods 30 single-rooted premolar teeth with oval-shaped or round-shaped canals were selected,and root length was uniform at 12 mm.The teeth were randomly divided into group A,group B and group C(with 10 samples in each group).There were no statistically differences in long diameter,short diameter,long diameter/short diameter,and prepared lumen volume of the root canal cross-section at a distance of 5 mm between the control groups."BeeFill 2in1"warm gutta-percha obturation system,"Fi-P"and"Fi-E"warm gutta-percha obturation systems,and cold gum lateral pressure filling technology were used to complete the filling,respectively.Micro-CT was used to scan,measure and analyze the volume ratio of root canal filling material to root canal cavity in the whole root canal,the 1/3 of the root neck,the 1/3 of the root middle,and the 1/3 of the root tip in each group,and statistical analysis was conducted.Results The percentage of volumes of root canal filling materials in the whole root canal,the 1/3 of the root neck,the 1/3 of the root middle,and the 1/3 of the root tip in"BeeFill 2in1"warm gutta-percha obturation system,"Fi-P"and"Fi-E"warm gutta-percha obturation systems were significantly higher than those of the cold gum lateral pressure filling technology(P＜0.05).There was no statistically signif-icant difference between"BeeFill 2in1"warm gutta-percha obturation system,"Fi-P"and"Fi-E"warm gutta-percha obtu-ration systems(P＞0.05).The percentage of volumes of root canal filling materials in the 1/3 of the root neck,the 1/3 of the root middle in"BeeFill 2in1"warm gutta-percha obturation system,"Fi-P"and"Fi-E"warm gutta-percha obturation systems,and the cold gum lateral pressure filling technology was higher than that in the 1/3 of the root tip in root canal filling volume(P＜0.05).Conclusion"BeeFill 2in1"warm gutta-percha obturation system,"Fi-P"and"Fi-E"warm gutta-percha obturation systems have more obvious superiority in root canal filling density than cold gum lateral pressure filling technology.
万方数据
维普
