In vitro effect of immediate and delayed post-space preparation on apical leakage following 2 root canal ob-turation techniques respectively
10.3969/j.issn.1001-3733.2024.06.010
- VernacularTitle:2种根管充填方式下即刻和延迟桩道预备对根尖微渗漏影响的体外研究
- Author:
Ling SI
1
;
Long JIANG
;
Yaqin ZHU
Author Information
1. 200011,上海交通大学医学院附属第九人民医院口腔综合科,上海交通大学口腔医学院,国家口腔医学中心,国家口腔疾病临床医学研究中心,上海市口腔医学重点实验室,上海市口腔医学研究所
- Keywords:
Immediate post-space preparation;
Delayed post-space preparation;
Apical leakage;
AH-Plus sealer;
iRoot SP sealer
- From:
Journal of Practical Stomatology
2024;40(6):793-798
- CountryChina
- Language:Chinese
-
Abstract:
Objective:To compare the effect of immediate and delayed post-space preparation on apical sealing ability between 2 root canal obturation techniques.Methods:60 freshly extracted single-rooted human premolars were collected and instrumented by M3-Pro instruments.The specimens were randomly divided into 6 groups and respectively treated by AH-Plus sealer with warm vertical compac-tion(WVC)followed by delayed post-space preparation(PSP)(A1);AH-Plus sealer with WVC followed by immediate PSP(A2);AH-Plus sealer with WVC,control group(A3);iRoot SP sealer with single cone(SC)followed by delayed PSP(B1);iRoot SP sealer with SC followed by immediate PSP(B2);iRoot SP sealer with SC,control group(B3).In group A1,A2,B1 and B2,gutta percha was removed by 1# starter drill and post-space was prepared by 2# finishing drill leaving 5 mm of apical filling.In control groups(A3 and B3),only apical 5 mm of the specimens was obturated.Dye leakage was measured as the linear penetration(LP)of the stain.The SPSS one-way analysis of variance test was used for statistical analysis.Results:The LP(mm)of group A1,A2,A3,B1,B2 and B3 was 3.986±0.500,3.382±0.806,2.178±0.554,3.844±0.877,3.416±0.579 and 1.897±0.217 respectively.Among A1,A2 and A3 groups,P＜0.05.The LP of group A1 was higher than that of group A2(P＜0.05).Among group B1,B2 and B3,P＜0.05,but be-tween group B1 and B2,P＞0.05.Between group A1 and B1,P＞0.05.Between A2 and B2,P＞0.05.Conclusion:Apical sealing is affected by PSP with the 2 root obturation techniques.Delayed PSP may have negative effect on apical sealing compared with immediate PSP,especially in the specimens compacted by AH-Plus sealer with WVC.
