Original scientific paper

The efficacy of chelating agent in the removal of smear layer during root canal therapy

Ivana Brekalo Pršo ; Katedra za endodonciju i restaurativnu stomatologiju, Medicinski fakultet Sveučilišta u Rijeci, Rijeka
Ivana Vidović ; Medicinski fakultet Sveučilišta u Rijeci, Rijeka
Marija Jurčević ; Katedra za endodonciju i restaurativnu stomatologiju, Medicinski fakultet Sveučilišta u Rijeci, Rijeka
Romana Peršić ; Katedra za endodonciju i restaurativnu stomatologiju, Medicinski fakultet Sveučilišta u Rijeci, Rijeka
Snježana Glavičić ; Katedra za endodonciju i restaurativnu stomatologiju, Medicinski fakultet Sveučilišta u Rijeci, Rijeka
Marin Vodanović ; Zavod za dentalnu antropologiju, Stomatološki fakultet Sveučilišta u Zagrebu, Zagreb
Sonja Pezelj-Ribarić ; Katedra za oralnu medicinu i parodontologiju, Medicinski fakultet Sveučilišta u Rijeci, Rijeka

Abstract

Objective: To investigate the efficacy of smear layer removal after mechanical and chemical root canal treatment using 17% EDTA solution in in vitro conditions. Methods: Research was performed on three groups of 15 extracted single-rooted human teeth. In the first group, the control group, EDTA was not used. In the second and third groups teeth root canals were irrigated with EDTA solution through one and five minutes after instrumentation. Analysis of smear layer was performed on cross-sectional slices using stereomicroscopy and light microscopy (Olimpus BX50, Tokyo, Japan) with adapted camera (TMC 76S Pulnix, Tokyo, Japan). Statistical analysis was performed using one-way analysis of variance (one-way ANOVA) and post hoc Scheffe test with P < 0.05. Results: In specimens treated with EDTA through five minutes the amount of smear layer was significantly lower when compared to control group (P = 0,039). At the cervical third of root canal the amount of smear layer in specimen treated with EDTA trough one minute (P < 0,001) and five minutes (P < 0,001) was significantly lower when compared to control group. In the middle third, we found that EDTA removes the smear layer through one minute (P = 0,023) and five minutes (P = 0,007) more efficiently when compared to control group. When the removal of smear layer in apical third was compared in all three groups, no differences were found (P = 0,428). Conclusion: The most effective removal of smear layer using EDTA solution was accomplished in the cervical and middle level of root canal, whilst in the apical level the largest amount of smear layer remained as a consequence of difficult penetration of the irrigant.

Keywords

endodontic; ethylene-diamine-tetra-acetic acid; smear layer

Hrčak ID:

84196

URI

https://hrcak.srce.hr/84196

Publication date:

4.6.2012.

Article data in other languages: croatian

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