Effect of Retreatment Instruments on Microcrack Formation: A Microcomputed Tomography Study

Koçak, Mustafa Murat; Çırakoğlu, Neslihan Yilmaz; Koçak, Sibel; Sağlam, Baran Can; Çiçek, Ersan; Türker, Sevinç Aktemur; Bodrumlu, Emre

doi:10.5301/ijao.5000578

Cited by 4 publications

(6 citation statements)

References 26 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The highest percentage of dentinal cracks in this study was found after using the NiTi rotary retreatment files. This is in accordance with many studies using micro-CT that found that NiTi rotary retreatment systems were associated with an increase in dentinal crack formation [ 36 – 38 ]. However, other studies reported that NiTi retreatment systems did not create dentinal cracks [ 7 , 39 ].…”

Section: Discussionsupporting

confidence: 92%

“…Some studies have used micro-CT and found that certain instrumentation systems caused more dentinal cracks to form [33,34]. They linked their findings to differences in instrument design, taper, number, and type of movements [4,[34][35][36].…”

Section: Discussionmentioning

confidence: 99%

“…NiTi rotary retreatment systems were associated with an increase in dentinal crack formation [36][37][38]. other studies reported that NiTi retreatment systems did not create dentinal cracks [7,39].…”

Section: Discussionmentioning

confidence: 99%

“…Previous studies [ 36 , 46 ] have reported an increase in crack formation focused in the apical or middle thirds [ 47 ]. In the current study, this increase was observed in the middle and coronal thirds, and not the apical third.…”

Section: Discussionmentioning

confidence: 99%

See 3 more Smart Citations

Evaluation of Dentinal Microcracks following Diode Laser- and Ultrasonic-Activated Removal of Bioceramic Material during Root Canal Retreatment

et al. 2022

View full text Add to dashboard Cite

This study is aimed at evaluating the use of microcomputed tomography (micro-CT) analysis and the dentinal microcrack formation following retreatment of bioceramic sealer employing adjunct laser-activated irrigation and ultrasonic-activated irrigation. Thirty sound human single-canal teeth ( n = 30 ) obturated using the single-cone technique with bioceramic sealer were retreated using nickel-titanium (NiTi) rotary files. The sample was randomly divided into three equal groups: group 1, the control group, was not subjected to further treatment; group 2 underwent ultrasonic activation of irrigants; group 3 underwent active irrigation with a diode laser (980 nm wavelength). Using micro-CT, the teeth were scanned before and after retreatment protocols. Two calibrated experienced observers viewed the cross-sectional images and calculated the number of dentinal defects. The presence of any crack or craze line on the external root surface or internal canal wall was counted. Data were analyzed using Friedman’s two-way analysis of variance and Fisher’s exact test. Statistical significance was set at p < 0.05 . A significant increase occurred in the number of cracks post retreatment protocols, specifically in the coronal and middle canal thirds, compared to pre- and postinstrumentation ( p = 0.0001 ). However, ultrasonic- or laser-activated irrigation did not result in a significant increase in the number of cracks ( p = 0.345 ). NiTi rotary root canal retreatment was associated with a significant increase in dentinal microcracks. However, employing ultrasonic- or laser-activated irrigation as adjunct retreatment techniques did not reveal a significant increase in dentinal microcracks within the roots.

show abstract

Section: Discussionsupporting

confidence: 92%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

See 2 more Smart Citations

Evaluation of Dentinal Microcracks following Diode Laser- and Ultrasonic-Activated Removal of Bioceramic Material during Root Canal Retreatment

et al. 2022

View full text Add to dashboard Cite

show abstract

“…Considering the retreatment procedures, filling material removal was related to the presence or propagation of structural defects in the dentin, such as dentinal defects or fractures, in studies with stereomicroscope analysis 4 . Yilmaz et al 14 and Koçak et al 7 also evaluated the formation of dentinal defects after filling removal procedures in micro-CT. This procedure did not directly influence the formation of dentinal defects even with a final instrument tip size 40 used by Yilmaz et al 14 and in the present study.…”

Section: Discussionmentioning

confidence: 99%

Micro-CT analysis of dentinal microcracks on root canals filled with a bioceramic sealer and retreated with reciprocating instruments

Almeida

Romeiro

Cassimiro

et al. 2020

Sci Rep

View full text Add to dashboard Cite

This study aimed to analyze the potential occurrence of dentinal defects after the removal of a root canal filling with two different sealers using Reciproc (RC) or Reciproc Blue (RB). The mesial roots of 60 mandibular molars with a Vertucci type IV configuration were selected. The samples were initially instrumented with Reciproc (R25) and then divided into the following four experimental groups according to the endodontic sealer and retreatment instrument (n = 15): BC Sealer/Reciproc (BCRC); BC Sealer/Reciproc Blue (BCRB); AH Plus/Reciproc (AHRC); and AH Plus/Reciproc Blue (AHRB). Then, the samples were scanned under micro-CT after obturation and removal of the filling material. Two analyses were conducted. First, an evaluation was performed on all the axial images, and another analysis evaluated each millimeter of the 10 mm from the apex. Dentinal defects were observed in all the samples. All of the identified defects in the images after filling material removal were present in the corresponding images after obturation. The use of AH Plus and EndoSequence BC Sealer, and filling material removal using RC and RB instruments did not induce dentinal defects.

show abstract

Dentinal Microcracks Induced by Endodontic Procedures: Suggested Design for Experimental Studies Using Micro–Computed Tomography and Strain Gauges

Tonelli

Antunes

Toubes

et al. 2021

Journal of Endodontics

View full text Add to dashboard Cite

Effect of Retreatment Instruments on Microcrack Formation: A Microcomputed Tomography Study

Abstract: Clinicians should be aware that all retreatment systems may cause microcracks.

Cited by 4 publications

References 26 publications

Evaluation of Dentinal Microcracks following Diode Laser- and Ultrasonic-Activated Removal of Bioceramic Material during Root Canal Retreatment

Evaluation of Dentinal Microcracks following Diode Laser- and Ultrasonic-Activated Removal of Bioceramic Material during Root Canal Retreatment

Micro-CT analysis of dentinal microcracks on root canals filled with a bioceramic sealer and retreated with reciprocating instruments

Dentinal Microcracks Induced by Endodontic Procedures: Suggested Design for Experimental Studies Using Micro–Computed Tomography and Strain Gauges

Contact Info

Product

Resources

About