Fracture resistance of the roots obturated with iRoot SP in root canal three-dimensional obturation in vitro
WU Yu-zhi
HE Min
LIU Yan
Abstract：AIM:To evaluate the fracture resistance of roots oburated with iRoot SP in root canal three-dmensional obturation.METHODS:55 mandibular premolars with single canal were decoronated and 55 root segments with the length of 12 mm were obtained.The roots were randomly divided into 3 experimental groups of A,B and C(n =15) and a control group of D(n =10).The roots in group D were unprepared and unfilled.In experimental groups root canals were instrumented using Protaper Files and prepared to #30.The root canals of group A were directly filled with iRoot SP,those of Group B and C were filled with iRoot SP using continuous wave of condensation technique and AH plus (root canal sealer) using continuous wave of condensation technique respectively.After filling the roots were examined by X-ray films,all canals were sealed with light-cured glass ionomer,kept at room temperature in 100 g/L formalin for 2 weeks.Then all samples were placed on a universal testing machine and loaded until fractured,the.maximum breaking load was recorded.RESULTS:The maximum breaking load of group A,B,C and D(N) was 384.33 ±91.55,308.33 ±56.25,289.13 ±54.92 and 370.50 ±89.92 respectively(A or D vs B or C,P ＜0.05;A vs D or B vs C,P ＞ 0.05).CONCLUSION:iRoot SP is a promising sealer in terms of increasing fracture resistance of endodontically treated roots.
Keywords：iRoot SPAH plusfracture resistance
Publication Date：2017-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：4( 702-705 )