摘要
Abstract
Objective To investigate the impact of iRoot SP and iMTA SP bioceramic root canal sealers combined with the single-cone technique on the filling length of oval root canals with insufficient mechanical preparation,and assess their clinical value.Methods A total of 100 extracted premolars were randomly divid-ed into four groups with 0,2,4,and 6 mm of insufficient preparation.Each group was further divided into three subgroups.The control group(AH Plus)had 5 specimens,while the iRoot SP and iMTA SP groups each had 10 specimens.For specimens sealed with iRoot SP and iMTA SP,the single-cone technique was used for obturation.The underfilling length after obturation was compared among all groups.Results In the 0 mm and 2 mm underprepared length groups,the rate of optimal filling was 100.0%for all three sealers.However,when the underprepared length exceeded 2 mm,When the underprepared length exceeded 2 mm,the optimal filling rate in the AH Plus group dropped to 0;in the 4 mm underprepared length group,the iMTA SP group achieved an optimal filling rate of 100.0%,which was higher than that of the iRoot SP group(90.0%).In the 6 mm underprepared length group,the underfilling length in the iMTA SP group was significantly shorter than that in the iRoot SP group,and the difference was statistically significant(P<0.05).The optimal filling rate in the iMTA SP group was 80.0%,which was higher than that in the iRoot SP group(40.0%).Within the iRoot SP group,significant differences in underfilling length were observed only between the 6 mm under-prepared length group and the 0 mm and 2 mm groups(P<0.05),while no significant differences were found among the other subgroups(P>0.05).Conclusion When mechanical preparation is underprepared,iRoot SP is suitable for oval-shaped root canals with underpreparation lengths within 4 mm,while iMTA SP has a broa-der application range,extending to underpreparation lengths up to 6 mm.关键词
张口受限/椭圆形根管/欠预备/根管封闭剂/单尖法Key words
Limitation of mouth opening/Elliptical root canal/Incomplete preparation/Root ca-nal sealer/Single-cone technique分类
医药卫生
