Efficacy of manual and mechanical instrumentation techniques for removal of overextended root canal filling material

Kesim, Bertan; Üstün, Yakup; Aslan, Tuğrul; Topçuoğlu, Hüseyin Sinan; Şahin, Sema; Ulusan, Özge

doi:10.4103/1119-3077.180069

Cited by 6 publications

(5 citation statements)

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“…The primary objective of retreatment is to remove root canal filling materials, disinfect the root canal system, and obturate the root canals [ 20 ]. Removal of root canal filling material from the apical third is the most difficult part of retreatment because of the anatomic variability of the apical third [ 21 ].…”

Section: Discussionmentioning

confidence: 99%

Incidence of apical crack formation and propagation during removal of root canal filling materials with different engine driven nickel-titanium instruments

Özyürek

Tek

Yılmaz³

et al. 2017

Restor Dent Endod

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ObjectivesTo determine the incidence of crack formation and propagation in apical root dentin after retreatment procedures performed using ProTaper Universal Retreatment (PTR), Mtwo-R, ProTaper Next (PTN), and Twisted File Adaptive (TFA) systems.Materials and MethodsThe study consisted of 120 extracted mandibular premolars. One millimeter from the apex of each tooth was ground perpendicular to the long axis of the tooth, and the apical surface was polished. Twenty teeth served as the negative control group. One hundred teeth were prepared, obturated, and then divided into 5 retreatment groups. The retreatment procedures were performed using the following files: PTR, Mtwo-R, PTN, TFA, and hand files. After filling material removal, apical enlargement was done using apical size 0.50 mm ProTaper Universal (PTU), Mtwo, PTN, TFA, and hand files. Digital images of the apical root surfaces were recorded before preparation, after preparation, after obturation, after filling removal, and after apical enlargement using a stereomicroscope. The images were then inspected for the presence of new apical cracks and crack propagation. Data were analyzed with χ2 tests using SPSS 21.0 software.ResultsNew cracks and crack propagation occurred in all the experimental groups during the retreatment process. Nickel-titanium rotary file systems caused significantly more apical crack formation and propagation than the hand files. The PTU system caused significantly more apical cracks than the other groups after the apical enlargement stage.ConclusionsThis study showed that retreatment procedures and apical enlargement after the use of retreatment files can cause crack formation and propagation in apical dentin.

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Section: Discussionmentioning

confidence: 99%

Incidence of apical crack formation and propagation during removal of root canal filling materials with different engine driven nickel-titanium instruments

Özyürek

Tek

Yılmaz³

et al. 2017

Restor Dent Endod

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“…This investigation was conducted across eighty previously extracted mandibular premolar teeth, divided into four study groups according to the applied manual and mechanical methods. (Kesim et al, 2017). The results of this investigation demonstrated that none of the differing manual and mechanical methodologies had any additional efficacybased advantage over the remainder groups, with Hedstrom files exhibiting a non-statistically significant success rate compared to the remainder study groups (Kesim et al, 2017).…”

Section: Mechanical Gp Removal Methodologies A) Hedstrom Filesmentioning

confidence: 78%

“…(Kesim et al, 2017). The results of this investigation demonstrated that none of the differing manual and mechanical methodologies had any additional efficacybased advantage over the remainder groups, with Hedstrom files exhibiting a non-statistically significant success rate compared to the remainder study groups (Kesim et al, 2017). However, Hedstrom files, a highly manual form of GP removal technique, carry disadvantages, mainly concerning dentin losses during the procedure.…”

Section: Mechanical Gp Removal Methodologies A) Hedstrom Filesmentioning

confidence: 81%

“…Since its inception, Hedstrom files (also termed as H-files) remain the current mainstay endodontic instruments for performing endodontic retreatment, with possible alternative tools not proving any significant increases in effectiveness for removing GP deposits from infected root canal systems (Çelik Ünal et al, 2009) (Aydin et al, 2009). Other similar studies include the investigation carried out by Kesim and colleagues in 2017 that performed a comparative analysis of the effectiveness of manual and mechanical-based endodontic tools, including Hedstrom files (Kesim et al, 2017). This investigation was conducted across eighty previously extracted mandibular premolar teeth, divided into four study groups according to the applied manual and mechanical methods.…”

Section: Mechanical Gp Removal Methodologies A) Hedstrom Filesmentioning

confidence: 99%

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Rotary Systems for Root Canal Gutta-percha Removal: A Review

Isa¹,

Ramlan²,

Ayoub³

2023

Compend. Oral Sci.

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Gaining a predictable outcome in endodontics is complicated by handling an endodontically treated. Compared to primary root canal therapy, non-surgical endodontic retreatment typically entails the removal of previous root filling materials. This process may be necessary to enable access to contaminated canal space for recleaning and to remove obturation materials that may have been contaminated by marginal penetration of microorganisms and microbial toxins. The achievement of patency at the canal terminus and the extension of cleaning as close as possible to the apical terminus have been identified as healing prognostic criteria. Gutta-percha (GP) is the current mainstay material utilised as an endodontic filling material, capable of performing comprehensive, three-dimensional sealing of the treated root canal system in a highly effective manner with considerable physical durability. Interestingly, since its initial discovery in the 17th century, GP remains to this day the ideal obturation material used across, in essence, all dental clinics globally due to its material properties and versatility for use in conjunction with sealer compounds. The development of GP removal systems that can manage to remove GP in its entirety from root canals during non-surgical retreatment procedures is currently highly desirable for dental practices. This literature review investigated this current research niche and scrutinised two prevalently utilised rotary systems – Edgefile-XR and the XP-Endo shaper systems.

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“…Eliminating previous obturating substances, left over necrosed tissues plus bacteria, re-instrumentation, disinfecting, and obturating the canals are the chief purposes of re-therapy. [ 7 ]…”

Section: Discussionmentioning

confidence: 99%

Evaluation of Root Dentin Damage during Retreatment Procedure using Various Engine-Driven Retreatment File Systems—A Micro-CT Study

Mailankote

Varghese

Awasthi

et al. 2023

Journal of Pharmacy and Bioallied Sciences

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Aim: The aim of this research was to assess the damage to root dentin that arises from retreatment with different engine-driven NiTi retreatment files employing micro-computed tomography. Materials and Methods: Sixty mandibular premolar teeth having a single root and root canal that were recently extracted were gathered and stored. The specimens were de-coronated at the cementoenamel junction under water irrigation to achieve a homogeneous root length of 16 millimeters. Gutta-percha cones were coated with sealants and placed within the radicular canal till the WL. All sixty premolars were randomly assigned to one of the following three groups, with every group comprising 20 sample teeth each. Group 1: MTwo Retreatment files, Group 2: ProTaper Universal Retreatment files, Group 3: Edge File XR Retreatment rotary files. The quantity of root dentinal injury was estimated by deducting the dentin volume (mm3) in the pre- and post-therapy micro-CT scans at apical, middle, and cervical 3rd points. Results: An intra-group comparative scrutiny showed that lower radicular dentinal injury was noted at apical 3rd (0.31 ± 0.16, 0.62 ± 0.02) in Edge File XR Retreatment file system and MTwo Retreatment file system in that order. The statistically significant disparity was seen amid the MTwo Retreatment file, Edge File XR Retreatment file system and ProTaper Universal Retreatment file, Edge File XR Retreatment file system with P value of 0.001on intergroup assessment. Conclusion: In spite of the limitations that this research had, it was inferred that each assessed file system proficiently eradicated the obturated material through the retreatment procedure performed. In addition, it was seen that the Edge File XR group showed lesser root dentin damage in contrast to MTwo and ProTaper Universal file systems.

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Efficacy of manual and mechanical instrumentation techniques for removal of overextended root canal filling material

Abstract: This study demonstrated that all tested systems had similar efficacy in removing overextended root canal filling material.

Cited by 6 publications

References 1 publication

Incidence of apical crack formation and propagation during removal of root canal filling materials with different engine driven nickel-titanium instruments

Incidence of apical crack formation and propagation during removal of root canal filling materials with different engine driven nickel-titanium instruments

Rotary Systems for Root Canal Gutta-percha Removal: A Review

Evaluation of Root Dentin Damage during Retreatment Procedure using Various Engine-Driven Retreatment File Systems—A Micro-CT Study

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