Influence of intracanal irrigants on coronal fracture resistance of endodontically treated and bleached teeth: An In vitro Study

Background: Irrigation has a key role in the success of endodontic treatment. Intracanal irrigant solutions have adverse effects on the physical properties of dentin. Aim: The present study aimed to evaluate the effect of different irrigation protocols on coronal fracture resistance of endodonticall...

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Main Authors: Maryam Khoroushi, Fatemeh Tavakol, Farinaz Shirban, Sanaz Ziaei
Format: Article
Language:English
Published: Wolters Kluwer Medknow Publications 2017-01-01
Series:Contemporary Clinical Dentistry
Subjects:
Online Access:http://www.contempclindent.org/article.asp?issn=0976-237X;year=2017;volume=8;issue=4;spage=552;epage=557;aulast=Khoroushi
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author Maryam Khoroushi
Fatemeh Tavakol
Farinaz Shirban
Sanaz Ziaei
author_facet Maryam Khoroushi
Fatemeh Tavakol
Farinaz Shirban
Sanaz Ziaei
author_sort Maryam Khoroushi
collection DOAJ
description Background: Irrigation has a key role in the success of endodontic treatment. Intracanal irrigant solutions have adverse effects on the physical properties of dentin. Aim: The present study aimed to evaluate the effect of different irrigation protocols on coronal fracture resistance of endodontically treated teeth undergoing bleaching treatment. Design and Materials and Methods: Access cavities were prepared in 120 maxillary premolars which were divided into two groups (n = 60) – Group A: nonbleached, Group B: bleached (B). Each group was subdivided into five subgroups based on irrigation protocol (n = 12); G1: normal saline (NS), G2: 2.5% sodium hypochlorite (NaOCl), G3: 10% citric acid (CA), G4: 17% ethylene diamine tetra acetic acid, and G5: NaOCl plus CA. In Group B, the teeth were bleached using 38% hydrogen peroxide and 20% carbamide peroxide gels as in-office and at-home bleaching techniques for 3 weeks. All the teeth were restored with composite resin, thermocycled, and incubated for 24 h. The specimens underwent fracture resistance tests. Data were analyzed with ANOVA, Tukey honestly significant difference test, t-test, and Chi-squared test (α =0.05). Results: T-test showed significant differences between each two corresponding subgroups (P < 0.0001). In Group A, NS demonstrated significantly higher fracture resistance compared to others; however, minimum fracture resistance recorded in G2. In Group B, the maximum fracture resistance was recorded in G1, with the minimum being recorded in G5. Samples irrigated with NaOCl and NaOCl plus CA exhibited significantly lower fracture resistance compared to NS subgroup (P < 0.05). Conclusions: Within the limitations of this study, it can be concluded that the irrigation protocol used during endodontic treatment with/without bleaching can affect the coronal fracture resistance.
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spelling doaj.art-d26dad55d6b54bb9a352239ccfc2c6512022-12-22T00:40:09ZengWolters Kluwer Medknow PublicationsContemporary Clinical Dentistry0976-237X0976-23612017-01-018455255710.4103/ccd.ccd_445_17Influence of intracanal irrigants on coronal fracture resistance of endodontically treated and bleached teeth: An In vitro StudyMaryam KhoroushiFatemeh TavakolFarinaz ShirbanSanaz ZiaeiBackground: Irrigation has a key role in the success of endodontic treatment. Intracanal irrigant solutions have adverse effects on the physical properties of dentin. Aim: The present study aimed to evaluate the effect of different irrigation protocols on coronal fracture resistance of endodontically treated teeth undergoing bleaching treatment. Design and Materials and Methods: Access cavities were prepared in 120 maxillary premolars which were divided into two groups (n = 60) – Group A: nonbleached, Group B: bleached (B). Each group was subdivided into five subgroups based on irrigation protocol (n = 12); G1: normal saline (NS), G2: 2.5% sodium hypochlorite (NaOCl), G3: 10% citric acid (CA), G4: 17% ethylene diamine tetra acetic acid, and G5: NaOCl plus CA. In Group B, the teeth were bleached using 38% hydrogen peroxide and 20% carbamide peroxide gels as in-office and at-home bleaching techniques for 3 weeks. All the teeth were restored with composite resin, thermocycled, and incubated for 24 h. The specimens underwent fracture resistance tests. Data were analyzed with ANOVA, Tukey honestly significant difference test, t-test, and Chi-squared test (α =0.05). Results: T-test showed significant differences between each two corresponding subgroups (P < 0.0001). In Group A, NS demonstrated significantly higher fracture resistance compared to others; however, minimum fracture resistance recorded in G2. In Group B, the maximum fracture resistance was recorded in G1, with the minimum being recorded in G5. Samples irrigated with NaOCl and NaOCl plus CA exhibited significantly lower fracture resistance compared to NS subgroup (P < 0.05). Conclusions: Within the limitations of this study, it can be concluded that the irrigation protocol used during endodontic treatment with/without bleaching can affect the coronal fracture resistance.http://www.contempclindent.org/article.asp?issn=0976-237X;year=2017;volume=8;issue=4;spage=552;epage=557;aulast=KhoroushiBleachingendodontically treated teethfracture resistanceroot canal irrigants
spellingShingle Maryam Khoroushi
Fatemeh Tavakol
Farinaz Shirban
Sanaz Ziaei
Influence of intracanal irrigants on coronal fracture resistance of endodontically treated and bleached teeth: An In vitro Study
Contemporary Clinical Dentistry
Bleaching
endodontically treated teeth
fracture resistance
root canal irrigants
title Influence of intracanal irrigants on coronal fracture resistance of endodontically treated and bleached teeth: An In vitro Study
title_full Influence of intracanal irrigants on coronal fracture resistance of endodontically treated and bleached teeth: An In vitro Study
title_fullStr Influence of intracanal irrigants on coronal fracture resistance of endodontically treated and bleached teeth: An In vitro Study
title_full_unstemmed Influence of intracanal irrigants on coronal fracture resistance of endodontically treated and bleached teeth: An In vitro Study
title_short Influence of intracanal irrigants on coronal fracture resistance of endodontically treated and bleached teeth: An In vitro Study
title_sort influence of intracanal irrigants on coronal fracture resistance of endodontically treated and bleached teeth an in vitro study
topic Bleaching
endodontically treated teeth
fracture resistance
root canal irrigants
url http://www.contempclindent.org/article.asp?issn=0976-237X;year=2017;volume=8;issue=4;spage=552;epage=557;aulast=Khoroushi
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AT fatemehtavakol influenceofintracanalirrigantsoncoronalfractureresistanceofendodonticallytreatedandbleachedteethaninvitrostudy
AT farinazshirban influenceofintracanalirrigantsoncoronalfractureresistanceofendodonticallytreatedandbleachedteethaninvitrostudy
AT sanazziaei influenceofintracanalirrigantsoncoronalfractureresistanceofendodonticallytreatedandbleachedteethaninvitrostudy