A Comparative Analysis of Microleakage of Roots Filled with Different Obturation Techniques and Materials——an in Vitro Study.pdf

1、The purpose of this study was to evaluate the apical sealing ability ofthree different obturation techniques by using a dye leakage test；to findwhether the use of GuttaFlow, or the E & Q Plus System creates a better seal

2、than cold lateral condensation technique；by comparing the dye leakage inroot canals filled with each of them；and to statistically analyze theobtained data to come to a conclusion.Study design:One hundred and thirty extra

3、cted single-rooted maxillary anteriorswere selected for the study.The teeth were decoronated and the root canalsprepared using ProFile rotary instruments to an apical dimension of size 40(0.06 taper). The specimens were

4、 then randomly divided into threeexperimental groups (n=40) and filled with gutta-percha and AH Plussealer by using either cold lateral compaction or the E & Q Plus system;and GuttaFlow respectively. Another five teeth e

5、ach served as the positiveand negative controls. A dye leakage test was used for quantitativeevaluation of the apical microleakage at ten days, one month, six monthsand one year；using a stereomicroscope.Results:1. No sig

6、nificant difference in the cumulative amount of leakage wasfound among the three groups at ten days (Kruskal-Wallis test, P>0.05).2. Lateral compaction showed significantly more leakage than the othertwo techniques at lo

7、nger intervals (Kruskal-Wallis test, P<0.05).3. No significant difference was found between E & Q Plus andGuttaFlow at one and six months.4. However, GuttaFlow showed the best overall result over a oneperiod.Conclusion:

8、1 .Problems associated with the inadequate seal formed by gutta-perchawhen used as an obturation material have been known for decades. Theexperiment has also shown us that no matter what kind of method wechoose, with the

9、 extension of time, the amount of microleakage increases.2. No significant difference in the cumulative amount of leakage wasfound among the three groups at ten days3. The E & Q Plus system and GuttaFlow showed a better

10、sealing resultthan cold lateral compaction of gutta-percha at extended observationperiods；i.e., after ten days.4. GuttaFlow showed the best overall result over a one year period.All in all, with respect to the apic

11、al sealing ability, coldfluid gutta-percha (GuttaFlow) shows a better result；therefore, its usewould be worthwhile among practicing clinicians.5. Further case-controlled study, or better still, randomized clinical