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Arun N, Solete P, Jeevanandan G, Antony DP, Sairaman S, S S. Comparative Evaluation of the Removal of Gutta Percha From the Root Canal Using Various Retreatment File Systems With and Without Magnification: An In Vitro Study. Cureus 2024; 16:e62128. [PMID: 38993434 PMCID: PMC11238020 DOI: 10.7759/cureus.62128] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2024] [Accepted: 06/11/2024] [Indexed: 07/13/2024] Open
Abstract
AIM AND OBJECTIVE The main goal was to compare the efficacy of gutta percha (GP) removal from the root canal using the Neo Endo Retreatment file system, Solite RS3, and ProTaper Universal Retreatment (PTUR) files with and without magnification under a direct operative microscope using stereomicroscopic evaluation. MATERIALS AND METHODS Sixty single-rooted teeth were randomly assigned to one of three groups after obturation till F2 mastercone with resin sealer: Group 1 (n=20): Neo Endo Retreatment Files, Group 2 (n=20): Solite RS3, Group 3 (n=20): PTUR files. Each group was further separated into two subgroups: Subgroup 1: without magnification (no direct operative microscope) and Subgroup 2: with magnification under a direct operative microscope at 12× magnification. After retreatment, the roots were grooved buccolingually and split into two halves using a diamond disc with the help of a chisel. The samples were examined under a stereomicroscope. Images were captured in a digital camera and analyzed using image analyzing software Image Pro v10 (Media Cybernetics). RESULTS The Neo Endo retreatment file system had a significantly greater percentage of remaining obturating material than the Solite RS3 Retreatment and PTUR file systems (p<0.05) in both groups with and without magnification. In the group without magnification, Solite RS3 showed a significant difference compared to ProTaper (p<0.05). In the group with magnification, there was no significant difference between the ProTaper Universal retreatment file system and Solite RS3 (p=0.589). Retreatment performed without magnification had more remnant GP when compared to the retreatment procedure performed under magnification of the direct operative microscope. CONCLUSION Under stereomicroscopic evaluation, the remnant GP was higher in the Neo Endo File System both with and without magnification than in the Solite Retreatment and PTUR file systems. ProTaper showed moderate significance in removing the obturation than Solite RS3 in the magnification group. The Solite RS3 file system performed as efficiently as the PTUR file system.
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Affiliation(s)
- Nishitha Arun
- Department of Conservative Dentistry and Endodontics, Saveetha Dental College and Hospitals, Saveetha Institute of Medical and Technical Sciences, Saveetha University, Chennai, IND
| | - Pradeep Solete
- Department of Conservative Dentistry and Endodontics, Saveetha Dental College and Hospitals, Saveetha Institute of Medical and Technical Sciences, Saveetha University, Chennai, IND
| | - Ganesh Jeevanandan
- Department of Pediatric and Preventive Dentistry, Saveetha Dental College and Hospitals, Saveetha Institute of Medical and Technical Sciences, Saveetha University, Chennai, IND
| | - Delphine P Antony
- Department of Conservative Dentistry and Endodontics, Saveetha Dental College and Hospitals, Saveetha Institute of Medical and Technical Sciences, Saveetha University, Chennai, IND
| | - Sruthi Sairaman
- Department of Conservative Dentistry and Endodontics, Saveetha Dental College and Hospitals, Saveetha Institute of Medical and Technical Sciences, Saveetha University, Chennai, IND
| | - Swathi S
- Department of Conservative Dentistry and Endodontics, Saveetha Dental College and Hospitals, Saveetha Institute of Medical and Technical Sciences, Saveetha University, Chennai, IND
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Atique S, Ali K, Haroon S, Ahmed A, Javed MQ, Zafar MS, Abulhamael AM. Effectiveness of H-files and Pro-Taper universal systems in removing Gutta-percha during endodontic retreatment: A comparative study. J Taibah Univ Med Sci 2024; 19:537-544. [PMID: 38711796 PMCID: PMC11070706 DOI: 10.1016/j.jtumed.2024.04.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2024] [Revised: 03/13/2024] [Accepted: 04/12/2024] [Indexed: 05/08/2024] Open
Abstract
Objective This research was aimed at assessing the effectiveness of manual H-files versus a combination of a Pro-Taper universal rotary canal preparation system and retreatment system in removing gutta-percha (GP) during endodontic retreatment, by using a digital radiography technique. Methods This ex vivo study used a non-probability consecutive sampling technique. The study sample comprised 60 extracted anterior permanent teeth, each with one root with a straight root canal (RC). After preparation, RCs were obturated with GP and sealer. Subsequently, teeth were stored for 2 weeks in a humid environment at 37 °C. Thirty teeth each were randomly assigned to the control (group I), and experimental (group II) groups. GP removal was performed with H-files {group I) or a combination of a Pro-Taper universal rotary canal preparation system and retreatment system (group 2). Digital radiographs were acquired with Carestream digital radiovisiography software (Kodak; version-VER.6.10.8.3-A), and the presence of residual GP was analyzed. AutoCAD (2006) software was used to demarcate the RC and residual root filling. The residual GP in both groups was compared with independent sample t-tests. Results The remaining root filling did not significantly differ when GP was removed with conventional Hedstrom files versus a combination of Pro-Taper Universal preparation and retreatment file systems. The residual GP was confined to the apical third of the canals in both groups. Conclusions Pro-Taper Universal preparation and retreatment file systems have similar effectiveness to manual H-files in GP removal in straight canals.
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Affiliation(s)
- Sundus Atique
- Department of Preclinical Oral Health Sciences, College of Dental Medicine, Qatar University, Doha, Qatar
| | - Kamran Ali
- Department of Preclinical Oral Health Sciences, College of Dental Medicine, Qatar University, Doha, Qatar
| | - Saad Haroon
- Department of Endodontics, Specialist Endodontist, Primary Health Care Corporation, Qatar
| | - Alia Ahmed
- Department of Operative Dentistry, College of Dentistry, Riphah International University, Islamabad, Pakistan
| | - Muhammad Q. Javed
- Department of Conservative Dental Sciences, College of Dentistry, Qassim University, Buraidah, Qassim, KSA
| | - Muhammad S. Zafar
- Department of Restorative Dentistry, College of Dentistry, Taibah University, Almadinah Almunawwarah, KSA
- Centre of Medical and Bio-allied Health Sciences Research, Ajman University, Ajman, 346, United Arab Emirates
- School of Dentistry, University of Jordan, Amman, Jordan
- Department of Dental Materials, Islamic International Dental College, Riphah International University, Islamabad, Pakistan
| | - Ayman M. Abulhamael
- Department of Endodontics, Faculty of Dentistry, King Abdulaziz University, Jeddah, KSA
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Karunakar P, Ranga Reddy MS, Karteek BS, Lakshmi Charan Reddy C, Swetha C, Racha K, Waheed S. Evaluation of the Efficacy of Neo-endo, Hyflex Re-treatment File Systems and H-Files for Removing Gutta-Percha From Root Canal Treated Tooth by Using Stereomicroscope-An In Vitro Study. JOURNAL OF PHARMACY AND BIOALLIED SCIENCES 2024; 16:S1695-S1699. [PMID: 38882799 PMCID: PMC11174156 DOI: 10.4103/jpbs.jpbs_970_23] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2023] [Revised: 12/07/2023] [Accepted: 12/30/2023] [Indexed: 06/18/2024] Open
Abstract
Aim To evaluate the efficacy of Neo-endo, Hyflextm retreatment file systems, and H-files for removing gutta-percha from root canal treated tooth. Materials and Methods Thirty extracted single-rooted human teeth with a single canal were opted. The shaping of the root canals was done with pro-taper universal files and later obturated. The samples were grouped based on the file system chosen for removing the obturating material: Group I-H-files; Group II-Neo-endo retreatment files; Group III-Hyflex™ retreatment files. The quantity of remaining gutta-percha still present after the retreatment procedure was assessed under a stereomicroscope. One-way Analysis of Variance (ANOVA) was used to statistically analyze the data. Results Hyflex™ files left less remaining filling material than with Neo-endo and H-files. Conclusion The Hyflex™ retreatment files were most efficient in removing the gutta-percha from the root canal.
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Affiliation(s)
- P Karunakar
- Department of Conservative Dentistry and Endodontics, Panineeya Institute of Dental Sciences and Research Centre, Kaloji Narayana Rao University of Health Sciences, Telangana, India
| | - M S Ranga Reddy
- Department of Conservative Dentistry and Endodontics, Panineeya Institute of Dental Sciences and Research Centre, Kaloji Narayana Rao University of Health Sciences, Telangana, India
| | - Basa Srinivas Karteek
- Department of Conservative Dentistry and Endodontics, Panineeya Institute of Dental Sciences and Research Centre, Kaloji Narayana Rao University of Health Sciences, Telangana, India
| | - Chavva Lakshmi Charan Reddy
- Department of Conservative Dentistry and Endodontics, Panineeya Institute of Dental Sciences and Research Centre, Kaloji Narayana Rao University of Health Sciences, Telangana, India
| | - Chigurupati Swetha
- Department of Conservative Dentistry and Endodontics, Panineeya Institute of Dental Sciences and Research Centre, Kaloji Narayana Rao University of Health Sciences, Telangana, India
| | - Kundana Racha
- Department of Conservative Dentistry and Endodontics, Panineeya Institute of Dental Sciences and Research Centre, Kaloji Narayana Rao University of Health Sciences, Telangana, India
| | - Sumaiya Waheed
- Department of Conservative Dentistry and Endodontics, Panineeya Institute of Dental Sciences and Research Centre, Kaloji Narayana Rao University of Health Sciences, Telangana, India
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Uzunoğlu Özyürek E, Küçükkaya Eren S, Karahan S. Effect of treatment variables on apical extrusion of debris during root canal retreatment: A systematic review and meta-analysis of laboratory studies. J Dent Res Dent Clin Dent Prospects 2024; 18:1-16. [PMID: 38881644 PMCID: PMC11179139 DOI: 10.34172/joddd.40501] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2023] [Accepted: 12/06/2023] [Indexed: 06/18/2024] Open
Abstract
Background This study aimed to systematically and comprehensively review the effect of various treatment variables on apically extruded debris (AED) during non-surgical root canal retreatment (NSRCRT). Methods The study protocol is shared in the Open Science Framework database (https://osf.io/kjtdg/?view_only=17060180705745ec9dae9a01614f3880). An electronic search was conducted up to July 2022 to reveal related studies. Two reviewers critically assessed the studies for eligibility against inclusion and exclusion criteria and data extraction. Quantitative data synthesis was performed, and the risk of bias in the studies was also evaluated. Results Forty-six studies were included in the systematic review and 14 in the meta-analysis. Conflicting or limited evidence was found for the effect of sealer type, obturation technique, and solvent use. The manual instrumentation increased the amount of AED compared to rotary instrumentation during the removal of filling materials (P<0.001). There was no significant difference in the amount of AED between the use of rotary and reciprocating files during the removal of filling materials (P=0.181). Conclusion Rotary instruments can be recommended instead of manual instruments during the removal of filling materials to control the amount of AED. Further studies with a low risk of bias are needed to clarify the effect of other treatment variables on AED during NSRCRT.
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Affiliation(s)
- Emel Uzunoğlu Özyürek
- Department of Endodontics, Faculty of Dentistry, Hacettepe University, Ankara, Turkey
| | - Selen Küçükkaya Eren
- Department of Endodontics, Faculty of Dentistry, Hacettepe University, Ankara, Turkey
| | - Sevilay Karahan
- Department of Endodontics, Faculty of Dentistry, Hacettepe University, Ankara, Turkey
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Tavares KIMC, Pinto JC, Santos-Junior AO, Duarte MAH, Guerreiro-Tanomaru JM, Tanomaru-Filho M. Effect of Additional Apical Preparation on Retreatment of Curved Root Canals Filled with Different Sealers. Eur J Dent 2023; 17:636-641. [PMID: 36075266 PMCID: PMC10569835 DOI: 10.1055/s-0042-1750693] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022] Open
Abstract
OBJECTIVE This study assessed the influence of additional apical preparation on material removal during retreatment of curved root canals filled with different sealers. MATERIALS AND METHODS Twelve mesial roots of mandibular molars with two separate canals and curvature between 25 and 35 degrees were selected. The working length was established 1-mm short of the apical foramen, and all the root canals were prepared using ProDesign R (PDR) 25/0.06. After preparation, the root canals were divided in two groups (n = 12) and filled by continuous wave condensation technique with NeoMTA Plus or AH Plus. All the root canals were retreated using rotary ProDesign Logic RT 25/0.08, reciprocating PDR 25/0.06 and apical preparation with PDR 35/0.05. Additional apical preparation was performed with ProDesign Logic (PDL) 50/0.01. The samples were scanned using a Skycan 1176 micro-computed tomography (micro-CT), voxel size 8.74 µm, before and after the retreatment procedures. Percentages of remaining filling material were evaluated. STATISTICAL ANALYSIS The data were submitted to paired and unpaired t-tests (α = 0.05). RESULTS Percentage of remaining filling material was similar between the root canals filled with NeoMTA Plus or AH Plus sealer after retreatment using PDR 35/0.05, and after additional apical preparation using PDL 50/0.01 (p > 0.05). However, PDL 50/0.01 significantly decreased the percentage of remaining filling material in the apical third after the additional apical preparation for both sealers (p < 0.05). CONCLUSION NeoMTA Plus or AH Plus did not influence the retreatment of curved root canals. ProDesign Logic 50/0.01 promoted greater filling material removal in the apical third.
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Affiliation(s)
- Karina I. M. C. Tavares
- Department of Restorative Dentistry, School of Dentistry, São Paulo State University, Araraquara, São Paulo, Brazil
| | - Jader C. Pinto
- Department of Restorative Dentistry, School of Dentistry, São Paulo State University, Araraquara, São Paulo, Brazil
| | - Airton O. Santos-Junior
- Department of Restorative Dentistry, School of Dentistry, São Paulo State University, Araraquara, São Paulo, Brazil
| | - Marco A. H. Duarte
- Department of Dentistry, Endodontics and Dental Materials, School of Dentistry, University of São Paulo, São Paulo, Brazil
| | | | - Mario Tanomaru-Filho
- Department of Restorative Dentistry, School of Dentistry, São Paulo State University, Araraquara, São Paulo, Brazil
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Varghese A, Nandini S, Sundar S, Natanasabapathy V. Full counterclockwise rotary motion kinematics enhances the removal of gutta-percha and bioceramic sealer from root canals: A computed tomographic study. J Conserv Dent 2022; 25:672-677. [PMID: 36591591 PMCID: PMC9795683 DOI: 10.4103/jcd.jcd_352_22] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2022] [Revised: 07/17/2022] [Accepted: 07/28/2022] [Indexed: 01/03/2023] Open
Abstract
Background and Aim Complete removal of gutta-percha and sealer is an important step during retreatment. The aim of this study was to assess the efficacy and time taken by full counterclockwise rotary motion of a reciprocating file in the removal of gutta-percha and BioRoot™ RCS bioceramic sealer. Materials and Methods Thirty-six extracted human mandibular premolars were instrumented with Mtwo rotary files and obturated using lateral condensation technique with gutta-percha and BioRoot™ RCS bioceramic sealer. The teeth were divided into three retreatment groups (n = 12) based on the kinematics used: Group I, Mtwo retreatment (Mtwo-R) files; Group II, Reciproc files used in reciprocation mode (Reciproc-R); and Group III, Reciproc files used in full counterclockwise motion (Reciproc-CCW). The efficacy of gutta-percha and bioceramic sealer removal was assessed by volume of gutta-percha removed using cone-beam computed tomography and area of remaining gutta-percha and bioceramic sealer using ImageJ software after longitudinal sectioning. Statistical analysis was done by one-way analysis of variance test and Tukey's multiple post hoc tests. Results Reciproc-CCW motion was significantly efficient in the removal of gutta-percha and bioceramic sealer in comparison to Mtwo-R files and Reciproc-R. The time taken for gutta-percha and sealer removal was least for Reciproc-R (325.5 ± 101.68 seconds) and was statistically significant in comparison to the other groups. Conclusion Within the limitations of the study, Reciproc-CCW was an effective method of removal of gutta-percha and bioceramic sealer during retreatment.
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Affiliation(s)
- Aswathi Varghese
- Department of Conservative Dentistry and Endodontics, Faculty of Dentistry, Meenakshi Ammal Dental College and Hospital, Meenakshi Academy of Higher Education and Research, Chennai, Tamil Nadu, India
| | - Suresh Nandini
- Department of Conservative Dentistry and Endodontics, Faculty of Dentistry, Meenakshi Ammal Dental College and Hospital, Meenakshi Academy of Higher Education and Research, Chennai, Tamil Nadu, India
| | - Sathish Sundar
- Department of Conservative Dentistry and Endodontics, Faculty of Dentistry, Meenakshi Ammal Dental College and Hospital, Meenakshi Academy of Higher Education and Research, Chennai, Tamil Nadu, India
| | - Velmurugan Natanasabapathy
- Department of Conservative Dentistry and Endodontics, Faculty of Dentistry, Meenakshi Ammal Dental College and Hospital, Meenakshi Academy of Higher Education and Research, Chennai, Tamil Nadu, India
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Ashraf A, Hussein W, Hashem A, Soliman A. The Effect of Passive Ultrasonic Irrigation and XP-Endo Finisher on Post-operative Pain after Endodontic Retreatment on Patients (Randomized Controlled Clinical Trial). Open Access Maced J Med Sci 2022. [DOI: 10.3889/oamjms.2022.10536] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
AIM: To evaluate the effect of passive ultrasonic irrigation or XP-Endo Finisher on postoperative pain in patients with underextended filling in previously endodontically treated mandibular first molar teeth requiring endodontic retreatment using visual analog scale (VAS) scale at 6, 12, 24, 48, 72 h, and 7 daytime intervals.
METHODS: Seventy-eight patients with mandibular first molars which need endodontic retreatment were randomly allocated into one of three separate groups (n = 26); NaviTip group (control), XP-Endo Finisher group, or Ultra X group. Data were statistically analyzed with a significance level of p ≤ 0.05.
RESULTS: XP-Endo Finisher agitation and ultrasonic agitation as a final irrigation protocol showed significantly lower pain values than the control group, but there was no significant difference in pain values between the experimental groups.
CONCLUSION: Within the limitation of this study, it can be concluded that agitation techniques used during endodontic retreatment decreased the incidence and intensity of post-operative pain.
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Efficacy of XP-Endo Finisher R in Removing Root Filling Remnants in Root Canal Retreatment. JOURNAL OF RESEARCH IN DENTAL AND MAXILLOFACIAL SCIENCES 2022. [DOI: 10.52547/jrdms.7.3.142] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
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Sameh R, Omaia M. The Efficacy of Two Novel Retreatment Systems in the Removal of Root Canal Obturating Materials (An In vitro Study). Open Access Maced J Med Sci 2022. [DOI: 10.3889/oamjms.2022.8112] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
Abstract
BACKGROUND: The complete removal of root filling material is one of the main goals of non-surgical endodontic retreatment. Thus, the development of new techniques and instruments aiming to promote this task presents clinical significance.
AIM: The purpose of the study was to assess the amount of residual root canal filling materials (gutta-percha/sealer) after using two different endodontic retreatment systems and ultrasonic tip.
METHODS: Forty-five mandibular premolar teeth were mechanically instrumented and obturated. Retreatment was performed using two different Endostar RE (Group 2), Rogin retreatment system (Group 3), and ultrasonic tip (Group 1). Roots were separated buccolingually into two halves. A digital camera connected to the stereomicroscope captured images to each half. Image-J software was used to evaluate and measure the areas with remaining filling material in each third (cervical, middle, and apical).
RESULTS: Data analysis revealed significant differences between the groups in the coronal, middle, and apical thirds (p < 0.05). The ultrasonic retreatment tips (G1) were significantly more efficient in removing the gutta-percha and sealers compared to the Rogin (G3) and Endostar (G2) retreatment endodontic kits.
CONCLUSIONS: All the file systems left some filling material in the canals. Ultrasonic retreatment tip had maximum efficacy for the removal of filling materials in comparison with the retreatment file systems under investigation.
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Lee T, Kahm SH, Kim K, Yang S. The Retrievability of Calcium Silicate-Based Sealer during Retreatment and the Effectiveness of Additional Passive Ultrasonic Irrigation: A Microcomputed Tomographic Study. SCANNING 2022; 2022:3933305. [PMID: 35136463 PMCID: PMC8803455 DOI: 10.1155/2022/3933305] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/12/2021] [Accepted: 01/08/2022] [Indexed: 06/10/2023]
Abstract
This study investigated the retreatability of EndoSeal MTA (Maruch, Wonju, Korea) according to the presence or absence of a canal isthmus and the additional use of passive ultrasonic irrigation (PUI) through microcomputed tomography (micro-CT) imaging. An epoxy resin sealer (AH Plus (Dentsply DeTrey, Konstanz, Germany)) was used as a reference for comparison. Forty-five artificial mandibular molars (TRUETOOTH #19, DELABS, Santa Barbara, CA) with a mesial canal with an isthmus and a distal canal without an isthmus were obturated using gutta-percha and one of the following sealers (n = 15 each): AH Plus, EndoSeal MTA, and EndoSeal MTA + PUI. Micro-CT scanning was performed to assess the void volume (as a percentage) at three root levels. After the root fillings were removed, second micro-CT scanning was conducted to evaluate the amount of remaining root filling material. The Kruskal-Wallis H test and post hoc analysis were used for between-group comparisons. The Mann-Whitney U test was used for comparisons between canals with and without an isthmus (p < 0.05). In the EndoSeal MTA group, the void volume and remaining filling materials were higher irrespective of the presence or absence of an isthmus. In apical lesions in the EndoSeal MTA group, the void ratio was significantly lower, and there was a significantly higher amount of remaining filling material. Regardless of the presence of an isthmus, the amount of remaining filling material of the EndoSeal + PUI group was reduced to a similar degree as the AH plus group. When performing retreatment for root canals filled with EndoSeal MTA, removal of the filling material can be more difficult in the apical region. The additional use of PUI can improve the efficacy of removal.
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Affiliation(s)
- TaeYeon Lee
- Department of Conservative Dentistry, Yeouido St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul 07345, Republic of Korea
| | - Se Hoon Kahm
- Department of Dentistry, Eunpyeong St. Mary's Dental Hospital, College of Medicine, The Catholic University of Korea, Seoul 03312, Republic of Korea
| | | | - SungEun Yang
- Department of Conservative Dentistry, Seoul St. Mary's Dental Hospital, College of Medicine, The Catholic University of Korea, Seoul 06591, Republic of Korea
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Kader M, Buranade A, Algarni Y, N. Alobaid A, Baba S, Mohamed Ali A. Comparative evaluation of efficacy of protaper universal retreatment system, R-endo system and hedstrom file in gutta percha removal during root canal retreatment- An In Vitro study. JOURNAL OF PHARMACY AND BIOALLIED SCIENCES 2022; 14:S507-S510. [PMID: 36110617 PMCID: PMC9469304 DOI: 10.4103/jpbs.jpbs_74_22] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2022] [Revised: 02/18/2022] [Accepted: 03/06/2022] [Indexed: 11/25/2022] Open
Abstract
Background: The complete removal of residual filling materials from the root canal determines the success of root canal retreatment. Aim: To evaluate and correlate the efficacy of ProTaper retreatment system, R-Endo retreatment system, and Hedstrom file in the removal of gutta-percha and sealer from root canal during endodontic retreatment in addition to the period desired for the elimination of gutta-percha and sealer. Methodology: Thirty extracted premolars were prepared and filled by cold lateral compaction with gutta-percha and sealer. Retreatment was finished with ProTaper retreatment files, R-Endo files, Hedstrom files with Endosolv E as the solvent for 10 specimens each. Each half of the root was imaged using the image analyzer software Chroma allied to a stereomicroscope with 10× magnification via a charge-coupled device sensor. For statistical analysis, parametric one-way ANOVA test and Scheffe post hoc multiple range test were utilized at a significance level of P < 0.05. Results: There is no significant difference among the three groups at P < 0.0001 in removing filling material. However, the rotary files needed significantly less time for removing gutta-percha along with sealer than H-file (P < 0.0001). Conclusion: The gutta-percha and sealer were found in the root canal subsequent to all the retreatment techniques, especially in the apical third. Retreatment time was less only for the rotary system.
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Ruivo LM, Rios MDA, Villela AM, de Martin AS, Kato AS, Pelegrine RA, Barbosa AFA, Silva EJNL, Bueno CEDS. Fracture incidence of Reciproc instruments during root canal retreatment performed by postgraduate students: a cross-sectional retrospective clinical study. Restor Dent Endod 2021; 46:e49. [PMID: 34909413 PMCID: PMC8636080 DOI: 10.5395/rde.2021.46.e49] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2021] [Revised: 02/18/2021] [Accepted: 02/21/2021] [Indexed: 11/29/2022] Open
Abstract
Objectives To evaluate the fracture incidence of Reciproc R25 instruments (VDW) used during non-surgical root canal retreatments performed by students in a postgraduate endodontic program. Materials and Methods From the analysis of clinical record cards and periapical radiographs of root canal retreatments performed by postgraduate students using the Reciproc R25, a total of 1,016 teeth (2,544 root canals) were selected. The instruments were discarded after a single use. The general incidence of instrument fractures and its frequency was analyzed considering the group of teeth and the root thirds where the fractures occurred. Statistical analysis was performed using the χ2 test (p < 0.01). Results Seven instruments were separated during the procedures. The percentage of fracture in relation to the number of instrumented canals was 0.27% and 0.68% in relation to the number of instrumented teeth. Four fractures occurred in maxillary molars, 1 in a mandibular molar, 1 in a mandibular premolar and 1 in a maxillary incisor. A greater number of fractures was observed in molars when compared with the number of fractures observed in the other dental groups (p < 0.01). Considering all of the instrument fractures, 71.43% were located in the apical third and 28.57% in the middle third (p < 0.01). One instrument fragment was removed, one bypassed, while in 5 cases, the instrument fragment remained inside the root canal. Conclusions The use of Reciproc R25 instruments in root canal retreatments carried out by postgraduate students was associated with a low incidence of fractures.
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Affiliation(s)
- Liliana Machado Ruivo
- Department of Endodontics, São Leopoldo Mandic Dental Research Center, Campinas, SP, Brazil
| | - Marcos de Azevedo Rios
- Department of Endodontics, Universidade Estadual de Feira de Santana, Feira de Santana, BA, Brazil
| | | | | | - Augusto Shoji Kato
- Department of Restorative Dentistry, Endodontics and Dental Materials, Bauru Dental School, University of São Paulo, Bauru, SP, Brazil
| | - Rina Andrea Pelegrine
- Department of Endodontics, São Leopoldo Mandic Dental Research Center, Campinas, SP, Brazil
| | | | - Emmanuel João Nogueira Leal Silva
- Department of Endodontics, Rio de Janeiro State University (UERJ), Rio de Janeiro, RJ, Brazil.,Department of Endodontic, Grande Rio University (UNIGRANRIO), Rio de Janeiro, RJ, Brazil
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Ajina MA, Shah PK, Chong BS. Critical analysis of research methods and experimental models to study removal of root filling materials. Int Endod J 2021; 55 Suppl 1:119-152. [PMID: 34674279 DOI: 10.1111/iej.13650] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2021] [Revised: 10/14/2021] [Accepted: 10/18/2021] [Indexed: 12/14/2022]
Abstract
Despite enjoying high favourable outcome rates, root canal treatment is not always successful. Root canal retreatment is a widely practised option for managing a non-healing root treated tooth. A basic distinction between retreatment and initial treatment is the requirement to remove the existing root filling material occupying the root canal space. Only then, can the technical deficiencies and possible causes of failure be addressed. Hence, the successful removal of the root filling material is critical to achieving the objectives of retreatment. Many different materials and techniques have been used for root canal filling, which have been documented in a plethora of studies; these are mainly laboratory studies investigating the removal of root filling materials. To help guide future research, which may then better inform clinical practice in relation to retreatment procedures, the focus of this narrative review is on the research methods and experimental models employed to study the removal of root filling materials. The current available literature demonstrates great variation in the research methodologies used to study the removal of root filling material, including direct visualization by splitting tooth samples or clearing, three-dimensional radiographic imaging including using microcomputed tomography or cone-beam computed tomography, and a combination of these techniques. Depending on the research method employed, variation also exists in quantification of root filling material removal; these include measurements of surface area, volume or weight, and criteria-based (semi-quantitative) assessment. Experimental models, using human teeth or resin models, differ with respect to standardization techniques and replication of the clinical scenario including initial sample preparation, canal filling, allocation and technical aspects of retreatment procedures. Future models should replicate, as closely as possible, the clinical scenario. Currently, microcomputed tomography provides a highly detailed, non-invasive and non-destructive method of objectively assessing and quantifying root filling removal.
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Affiliation(s)
- Mahdi A Ajina
- Institute of Dentistry, Barts & The London School of Medicine & Dentistry, Queen Mary University of London, London, UK
| | - Pratik K Shah
- Institute of Dentistry, Barts & The London School of Medicine & Dentistry, Queen Mary University of London, London, UK
| | - Bun San Chong
- Institute of Dentistry, Barts & The London School of Medicine & Dentistry, Queen Mary University of London, London, UK
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Colmenar D, Tamula T, Zhu Q, Ahn C, Primus C, Komabayashi T. Micro CT pilot evaluation of removability of two endodontic sealers. J Oral Sci 2021; 63:306-309. [PMID: 34408113 DOI: 10.2334/josnusd.21-0196] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022]
Abstract
PURPOSE This study compared the removability of AH Plus and EndoSequence BC sealers using in vitro micro-computed tomography. METHODS Ten single-canal, extracted human teeth were cleaned and shaped with ProTaper NEXT rotary files to size X5 (50/0.06) (Dentsply-Sirona). Canals were obturated with a single cone gutta-percha and either AH Plus (Dentsply-Sirona) (Group A) or EndoSequence BC (Brasseler) (Group B). ProTaper Universal Retreatment files (Dentsply-Sirona) were used to remove obturation materials after 90 days at 37oC/100% humidity. Each tooth was scanned using micro-computed tomography (SkyScan 1272; Bruker) at an isotropic resolution of 6 μm from which the percent of material removed was calculated. Two-sample t-tests and one-way ANOVA were used for analysis. RESULTS The percent removal of materials in the coronal third was 92.9% ± 7.3% (Group A) and 93.2% ± 6.1% (Group B). Removal in the middle third was 94.9% ± 8.5% (Group A) and 96.5% ± 6.1% (Group B). Apical third removal was 76.2% ± 27.9% (Group A) and 70.1% ± 30.8% (Group B). No statistically significant differences were determined between the two sealers or among the sectional thirds within each group (P > 0.05). CONCLUSION AH Plus and EndoSequence BC sealers exhibit the same removability at all canal levels of 70% to 96%, with better removal coronally.
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Affiliation(s)
| | - Tenzin Tamula
- University of New England College of Dental Medicine
| | - Qiang Zhu
- Division of Endodontology, University of Connecticut School of Dental Medicine
| | - Chul Ahn
- Department of Clinical Sciences, University of Texas Southwestern Medical Center
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Comparison of the efficacy of laser-activated and ultrasonic-activated techniques for the removal of tricalcium silicate-based sealers and gutta-percha in root canal retreatment: a microtomography and scanning electron microscopy study. BMC Oral Health 2021; 21:275. [PMID: 34022868 PMCID: PMC8141189 DOI: 10.1186/s12903-021-01638-5] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2020] [Accepted: 05/18/2021] [Indexed: 12/02/2022] Open
Abstract
Tricalcium silicate-based sealers have been usually indicated for the single-cone technique and result in more residual filling materials in root canal retreatment. Passive ultrasonic irrigation and photon-initiated photoacoustic streaming have been reported to improve the removal efficacy of root canal filling materials. However, the abilities of both techniques combined with NiTi re-instrumentation to remove residual tricalcium silicate-based sealer and gutta-percha have not been compared. The aim of this study was to evaluate the efficacy of laser-activated and ultrasonic-activated techniques in vitro for the removal of the tricalcium silicate-based sealer iRoot SP and gutta-percha after standard canal retreatment procedures with the use of nickel-titanium (NiTi) rotary instruments.
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Efficacy of Removing Thermafil and GuttaCore from Straight Root Canal Systems Using a Novel Non-Surgical Root Canal Re-Treatment System: A Micro-Computed Tomography Analysis. J Clin Med 2021; 10:jcm10061266. [PMID: 33803810 PMCID: PMC8003142 DOI: 10.3390/jcm10061266] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2021] [Revised: 03/12/2021] [Accepted: 03/15/2021] [Indexed: 11/16/2022] Open
Abstract
The present study aims to evaluate the effectiveness of an XP-endo non-surgical root canal re-treatment system in removing both GuttaCore and Thermafil gutta-percha carrier-based root canal filling materials from straight root canal systems using micro-computed tomography (micro-CT) analysis. The study was performed on 20 single-rooted upper teeth, which were randomly allocated into the following study groups: Group A, Thermafil and AH Plus sealer (n = 10); Group B, GuttaCore and AH Plus sealer (n = 10). Before and after the non-surgical root canal re-treatment procedure, the samples were submitted for a micro-CT analysis. The volume of the root canal filling material (mm3), the volume of the remaining root canal filling material (mm3) and the time (minutes) needed to remove the root canal filling material were also recorded. Student's t-test was used to analyze the results. No statistically significant differences were found between the volume of the remaining root canal filling material in the GuttaCore and Thermafil root canal filling systems at the coronal third (p = 0.782), middle third (p = 0.838) or apical third (p = 0.882) of the straight root canal systems; however, the GuttaCore required a statistically significant (p = 0.037) shorter amount of time (4.72 ± 0.76 min) to be removed than the Thermafil carrier-based root canal filling material (5.92 ± 1.42 min). The XP-endo Finisher non-surgical endodontic re-treatment system removes both GuttaCore and Thermafil gutta-percha carrier-based root canal filling materials from straight root canal systems, although removal of the GuttaCore gutta-percha carrier-based root canal filling material required less time.
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Natanasabapathy V, Arul B, Varghese A, Mishra A, Elango S, Padmanaban S. Retrievability of bioceramic-based sealers in comparison with epoxy resin-based sealer assessed using microcomputed tomography: A systematic review of laboratory-based studies. J Conserv Dent 2021; 24:421-434. [PMID: 35399761 PMCID: PMC8989176 DOI: 10.4103/jcd.jcd_376_21] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2021] [Revised: 09/30/2021] [Accepted: 10/16/2021] [Indexed: 12/02/2022] Open
Abstract
Aim: The objective was to evaluate the retrievability of bioceramic sealers in comparison with epoxy resin-based sealers assessed using microcomputed tomography. Materials and Methods: Four reviewers independently conducted a systematic literature search in four electronic databases. The risk of bias was assessed using modified Joanna Briggs Institute Critical Appraisal tools for Quasi-Experimental Studies. Results: Ten articles were included in this review and all had a moderate risk of bias. The results across the included articles were inconsistent with some indicating easier/difficult removal of bioceramic sealers, while others indicate no difference. The studies varied in terms of the type of bioceramic sealer used, root canal anatomy, and retreatment techniques followed. Due to heterogeneity, only a qualitative analysis was performed and no meta-analysis was conducted. Conclusion: The quality of evidence is low and no definitive conclusion could be derived regarding the retrievability of bioceramic sealer/AH plus sealer from the root canals during retreatment procedures.
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Crozeta BM, Chaves de Souza L, Correa Silva-Sousa YT, Sousa-Neto MD, Jaramillo DE, Silva RM. Evaluation of Passive Ultrasonic Irrigation and GentleWave System as Adjuvants in Endodontic Retreatment. J Endod 2020; 46:1279-1285. [PMID: 32553874 DOI: 10.1016/j.joen.2020.06.001] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2020] [Revised: 05/31/2020] [Accepted: 06/04/2020] [Indexed: 10/24/2022]
Abstract
INTRODUCTION Nonsurgical endodontic retreatment continues to be a challenge in endodontics, particularly when dealing with a complex tooth anatomy. This study evaluated the efficacy of passive ultrasonic irrigation (PUI) and the GentleWave system as supplementary techniques to remove remaining filling materials from oval-shaped root canals. METHODS Twenty distal roots of human mandibular molars with single and oval-shaped canals were shaped with R40 (40.06) instrument and filled with gutta-percha and AH Plus sealer using warm vertical obturation. Initial filling material removal was performed with R50 (50.05) instrument, followed by the use of PUI (n = 10) or GentleWave system (n = 10). Micro-computed tomographic images were obtained after obturation, initial material removal, and after the use of PUI and GentleWave. The volume of remaining filling material was calculated for the entire canal as well as for the coronal, middle, and apical thirds. Statistical analyses were performed by using analysis of variance, Kruskal-Wallis and Mann-Whitney tests. P ≤ .05 was considered significant. RESULTS The use of PUI and GentleWave as supplementary techniques significantly reduced the volume of remaining filling material after initial instrumentation (P < .05). However, none of these techniques was able to render canals free from filling materials. PUI showed better performance by removing 18% of the remaining filling material, whereas the GentleWave system was able to remove approximately 10% (P = .02). CONCLUSIONS The use of supplementary techniques optimized filling material removal after initial instrumentation. PUI enhanced the overall cleaning of the root canal system during endodontic retreatment in oval-shaped canals.
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Affiliation(s)
| | - Letícia Chaves de Souza
- Department of Endodontics, School of Dentistry, University of Texas Health Science Center at Houston, Houston, Texas
| | | | - Manoel D Sousa-Neto
- Department of Restorative Dentistry, School of Dentistry of Ribeirão Preto, University of São Paulo, Ribeirão Preto, Brazil
| | - David Enrique Jaramillo
- Department of Endodontics, School of Dentistry, University of Texas Health Science Center at Houston, Houston, Texas
| | - Renato Menezes Silva
- Department of Endodontics, School of Dentistry, University of Texas Health Science Center at Houston, Houston, Texas.
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Evaluation of apical extrusion during conventional retreatment with three endodontic systems. BALKAN JOURNAL OF DENTAL MEDICINE 2020. [DOI: 10.2478/bjdm-2020-0023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Background/Aim: The aim of this study was to compare the apical extrusion during endodontic retreatment using three different endodontic systems. Material and Methods: 120 extracted human teeth were ex vivo endodontically treated and retreatment was performed using three different endodontic systems. Samples were divided into 3 groups, A-retreatment with Hedstroem hand files, B-retreatment with Pro Taper Retreatment files and C-retreatment with Pro Taper Gold files. Apically extruded material was collected in pre-measured Eppendorfs on a laboratory scale (10-5g). The amount of the extruded material was measured after the retreatment. The data were analysed using the the statistical software: STATISTICA 7.1 and SPSS for Windows 20. Results: The statistical analysis of the data revealed significant differences between the three endodontic retreatment systems (P< 0.05). Apical extrusion in the A endodontic system is significantly greater than the rotary (B and C) endodontic systems. Conclusions: In ex vivo conditions the results of this study showed significant statistical difference between three investigated endodontic retreatment systems concerning the amount of apically exuded material. The largest amount of material suppressed periapically was proven for Hedstroem hand instruments.
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Kim K, Kim DV, Kim SY, Yang S. A micro-computed tomographic study of remaining filling materials of two bioceramic sealers and epoxy resin sealer after retreatment. Restor Dent Endod 2019; 44:e18. [PMID: 31149616 PMCID: PMC6529792 DOI: 10.5395/rde.2019.44.e18] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2018] [Revised: 03/20/2019] [Accepted: 03/22/2019] [Indexed: 11/14/2022] Open
Abstract
Objective This study evaluated the presence of residual root canal filling material after retreatment using micro-computed tomography (micro-CT). Materials and Methods Extracted human teeth (single- and double-rooted, n = 21/each; C-shaped, n = 15) were prepared with ProFile and randomly assigned to three subgroups for obturation with gutta-percha and three different sealers (EndoSeal MTA, EndoSequence BC sealer, and AH Plus). After 10 days, the filling material was removed and the root canals were instrumented one size up from the previous master apical file size. The teeth were scanned using micro-CT before and after retreatment. The percentage of remaining filling material after retreatment was calculated at the coronal, middle, and apical thirds. Data were analyzed using the Kruskal-Wallis test and Mann-Whitney U test with Bonferroni post hoc correction. Results The tested sealers showed no significant differences in the percentage of remaining filling material in single- and double-rooted teeth, although EndoSeal MTA showed the highest value in C-shaped roots (p < 0.05). The percentage of remaining filling material of AH Plus and EndoSeal MTA was significantly higher in C-shaped roots than in single- or double-roots (p < 0.05), while that of BC sealer was similar across all root types. EndoSeal MTA showed the highest values at the apical thirds of single- and double-roots (p < 0.05); otherwise, no significant differences were observed among the coronal, middle, and apical thirds. Conclusions Within the limitations of this study, a large amount of EndoSeal MTA remained after retreatment, especially in C-shaped root canals.
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Affiliation(s)
- KyungJae Kim
- Department of Conservative Dentistry, Seoul St. Mary's Dental Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea
| | - Da Vin Kim
- Department of Conservative Dentistry, Seoul St. Mary's Dental Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea
| | - Sin-Young Kim
- Department of Conservative Dentistry, Seoul St. Mary's Dental Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea
| | - SungEun Yang
- Department of Conservative Dentistry, Seoul St. Mary's Dental Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea
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Kim SR, Kwak SW, Lee J, Goo H, Ha J, Kim H. Efficacy and retrievability of root canal filling using calcium silicate‐based and epoxy resin‐based root canal sealers with matched obturation techniques. AUST ENDOD J 2019; 45:337-345. [DOI: 10.1111/aej.12323] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/12/2018] [Indexed: 11/29/2022]
Affiliation(s)
- Seo Ryeong Kim
- Department of Conservative Dentistry School of Dentistry Dental Research Institute Pusan National University Yangsan Korea
| | - Sang Won Kwak
- Department of Conservative Dentistry School of Dentistry Dental Research Institute Pusan National University Yangsan Korea
- Department of Conservative Dentistry School of Dentistry IHBR Kyungpook National University Daegu Korea
| | - Ju‐Kyung Lee
- Department of Conservative Dentistry School of Dentistry Dental Research Institute Pusan National University Yangsan Korea
| | - Hye‐Jin Goo
- Department of Conservative Dentistry School of Dentistry Dental Research Institute Pusan National University Yangsan Korea
| | - Jung‐Hong Ha
- Department of Conservative Dentistry School of Dentistry IHBR Kyungpook National University Daegu Korea
| | - Hyeon‐Cheol Kim
- Department of Conservative Dentistry School of Dentistry Dental Research Institute Pusan National University Yangsan Korea
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Topçuoğlu HS, Ulusan Ö, Topçuoğlu G, Biricik E. Apically extruded debris during the removal of canal filling material from root canals using three techniques. ACTA ACUST UNITED AC 2018; 9:e12337. [PMID: 29603889 DOI: 10.1111/jicd.12337] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2017] [Accepted: 02/01/2018] [Indexed: 01/13/2023]
Abstract
AIM In the present study, we evaluated the effect of the single-cone technique (SCT), cold lateral compaction (CLC), and wave vertical compaction (WVC) technique performed using two different sealers on the amount of apically extruded debris (AED) produced during the removal of canal filling material. METHODS Ninety extracted mandibular premolars were prepared with ProTaper instruments. The teeth were then randomly assigned to six groups (N = 15) for root canal filling: (a) group 1, CLC+AH Plus; (b) group 2, SCT+AH Plus; (c) group 3, WVC+AH Plus; (d) group 4, CLC+MTA Fillapex; (e) group 5, SCT+MTA Fillapex; and (f) group 6, WVC+MTA Fillapex. In all groups, the removal of canal filling material was performed with ProTaper retreatment instruments. The mean weight of the AED was assessed with an analytical balance. RESULTS The amount of AED was lowest in groups 2 and 5 (P < .05), with no difference between these groups (P > .05). Groups 3 and 6 produced the greatest amount of extruded debris (P < .05); there was no difference between these groups (P > .05). Additionally, there was no difference between groups 1 and 4 (P > .05). There was no significant difference among the groups regarding sealer type (P > .05). CONCLUSIONS The canal filling technique used affected the amount of AED produced during the removal of canal filling material, but not sealer type.
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Affiliation(s)
- Hüseyin S Topçuoğlu
- Department of Endodontics, Faculty of Dentistry, Erciyes University, Kayseri, Turkey
| | - Özge Ulusan
- Department of Endodontics, Faculty of Dentistry, Erciyes University, Kayseri, Turkey
| | | | - Eda Biricik
- Department of Endodontics, Faculty of Dentistry, Erciyes University, Kayseri, Turkey
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Silva EJNL, Belladonna FG, Carapiá MF, Muniz BL, Rocha MS, Moreira EJL. Micro-computed tomographic evaluation of canal retreatments performed by undergraduate students using different techniques. Restor Dent Endod 2018; 43:e5. [PMID: 29487836 PMCID: PMC5816994 DOI: 10.5395/rde.2018.43.e5] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2017] [Accepted: 12/14/2017] [Indexed: 11/11/2022] Open
Abstract
Objectives This study evaluated the amount of remaining root canal filling materials after retreatment procedures performed by undergraduate students using manual, rotary, and reciprocating techniques through micro-computed tomographic analysis. The incidence of instrument fracture and the instrumentation time were also evaluated. Materials and Methods Thirty maxillary single rooted teeth were prepared with Reciproc R25 files and filled with gutta-percha and AH Plus sealer by the continuous wave of condensation technique. Then, the specimens were assigned to 3 groups (n = 10), according to the retreatment technique used: manual, rotary, and reciprocating groups, which used K-file, Mtwo retreatment file, and Reciproc file, respectively. Retreatments were performed by undergraduate students. The sample was scanned after root canal filling and retreatment procedures, and the images of the canals were examined to quantify the amount of remaining filling material. The incidence of instrument fracture and the instrumentation time were recorded. Results Remaining filling material was observed in all specimens regardless of the technique used. The mean volume of remaining material was significantly lower in the Reciproc group than in the manual K-file and Mtwo retreatment groups (p < 0.05). The time required to achieve a satisfactory removal of canal filling material and refinement was significantly lower in the Mtwo retreatment and Reciproc groups (p < 0.05) when compared to the manual K-file group. No instrument fracture was observed in any of the groups. Conclusions Reciproc was the most effective instrument in the removal of canal fillings after retreatments performed by undergraduate students.
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Affiliation(s)
| | | | | | - Brenda Leite Muniz
- Department of Endodontics, School of Dentistry, Grande Rio University, Rio de Janeiro, RJ, Brazil
| | - Mariana Santoro Rocha
- Department of Endodontics, School of Dentistry, Grande Rio University, Rio de Janeiro, RJ, Brazil
| | - Edson Jorge Lima Moreira
- Department of Endodontics, School of Dentistry, Grande Rio University, Rio de Janeiro, RJ, Brazil
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Das S, De Ida A, Das S, Nair V, Saha N, Chattopadhyay S. Comparative evaluation of three different rotary instrumentation systems for removal of gutta-percha from root canal during endodontic retreatment: An in vitro study. J Conserv Dent 2018; 20:311-316. [PMID: 29386777 PMCID: PMC5767824 DOI: 10.4103/jcd.jcd_132_17] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Context: Endodontic retreatment is performed in teeth with endodontic failures. The main goal of retreatment is cleaning and shaping of the root canal with removal of old root filling material. Hand instruments and rotary instruments are mainly used for removing this filling material. Aim of Study: To compare the relative efficacy of three rotary instrumentation systems for removal of gutta-percha from root canal during endodontic retreatment. Objective of Study: To find out which NiTi system is more efficacious in retreatment and to check out the efficacy of retreatment with and without use of solvent. Materials and Methods: Sixty freshly extracted, single-rooted human mandibular premolars were instrumented with K-files, and each root canal was filled with gutta-percha and AH Plus (Dentsply Detrey, Konstanz, Germany) sealer using lateral compaction. Specimens were then divided into three experimental groups with twenty specimens each. Groups were then subdivided into ten specimens each. Groups were then retreated either with or without solvent. The removal of gutta-percha was performed using ProTaper retreatment files, Mtwo retreatment files, and R-Endo files after 2 weeks. The amount of root canal filling material remnant in the coronal, middle, and apical thirds was measured using stereomicroscope and computer image analysis program. Statistical Analysis Used: Data were evaluated statistically using analysis of variance. Results: ProTaper group was found to have less remnant filling material as compared to the other groups in coronal and middle thirds, but a significant difference was observed between ProTaper and Mtwo and Mtwo and R-Endo in the nonsolvent groups (P < 0.05). Mtwo group demonstrated less amount of remaining filling material in the nonsolvent group. Conclusions: Both nickel–titanium systems and ProTaper and Mtwo retreatment file systems, were found to be effective in the removal of root canal filling material. However, complete removal of gutta-percha from root canals did not occur with any of the experimental groups.
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Affiliation(s)
- Siddhartha Das
- Department of Conservative Dentistry, North Bengal Dental College and Hospital, Darjeeling, India
| | - Ataide De Ida
- Department of Conservative Dentistry, Goa Dental College and Hospital, Goa, India
| | - Subhasis Das
- Department of Conservative Dentistry, Burdwan Dental College and Hospital, Bardhaman, West Bengal, India
| | - Vineet Nair
- Department of Periodontia, North Bengal Dental College and Hospital, Darjeeling, India
| | - Nairita Saha
- Department of Oral Medicine and Radiology, North Bengal Dental College and Hospital, Darjeeling, India
| | - Sayan Chattopadhyay
- Department of Oral Medicine and Radiology, North Bengal Dental College and Hospital, Darjeeling, India
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25
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Silveira SB, Alves FR, Marceliano-Alves MF, Sousa JCN, Vieira VT, Siqueira JF, Lopes HP, Provenzano JC. Removal of Root Canal Fillings in Curved Canals Using Either Mani GPR or HyFlex NT Followed by Passive Ultrasonic Irrigation. J Endod 2018; 44:299-303.e1. [PMID: 29254819 DOI: 10.1016/j.joen.2017.09.012] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2017] [Revised: 09/12/2017] [Accepted: 09/21/2017] [Indexed: 10/18/2022]
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26
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Fatima K, Nair R, Khasnis S, Vallabhaneni S, Patil JD. Efficacy of rotary and reciprocating single-file systems on different access outlines for gutta-percha removal in retreatment: An in vitro study. J Conserv Dent 2018; 21:354-358. [PMID: 30122812 PMCID: PMC6080186 DOI: 10.4103/jcd.jcd_339_17] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/05/2022] Open
Abstract
Introduction: The aim of this study is to compare the effectiveness of reciprocating and continuous rotary nickel-titanium instruments during retreatment performed through two different access outlines. Methodology: A total of 48 freshly extracted mandibular first and second premolars with single root and canal were selected. Initial root canal treatment was completed through a contracted endodontic cavity (CEC) design. Canals were instrumented with F2 ProTaper instrument, obturated with warm lateral condensation of gutta-percha with AH Plus sealer, and allowed to set for 30 days at 37°C and 100% humidity. For retreatment, specimens were divided into two groups (n = 24) on the basis of access outline, CEC or traditional endodontic cavity. Retreatment was initiated using ProTaper Retreatment instruments (D1–D3). Specimens were further divided (n = 12) and reinstrumented up to Neoniti 25/0.08 or WaveOne 25/0.08. Irrigation was performed using 3% sodium hypochlorite and 17% ethylene diamine tetraacetic acid. Retreatment time was recorded. Teeth were sectioned and photographed, and the percentage of remaining obturation material was measured. Results: Data were collected, and statistical analysis was performed using one-way analysis of variance and Tukey honestly significant difference multiple post hoc procedures (P < 0.05). Conclusion: None of the systems completely removed the root filling material from root canals. However, ProTaper/Neoniti instruments removed more GP when compared to Protaper/WaveOne instruments with both the access outlines. Both the instruments with traditional access outline required less time for removal of obturating material when compared to CEC.
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Affiliation(s)
- Kainath Fatima
- Department of Conservative Dentistry and Endodontics, P.M.N.M Dental College, Bagalkot, Karnataka, India
| | - Rohit Nair
- Department of Conservative Dentistry and Endodontics, P.M.N.M Dental College, Bagalkot, Karnataka, India
| | - Sandhya Khasnis
- Department of Conservative Dentistry and Endodontics, P.M.N.M Dental College, Bagalkot, Karnataka, India
| | - Saritha Vallabhaneni
- Department of Conservative Dentistry and Endodontics, P.M.N.M Dental College, Bagalkot, Karnataka, India
| | - Jayaprakash D Patil
- Department of Conservative Dentistry and Endodontics, P.M.N.M Dental College, Bagalkot, Karnataka, India
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Comparing ProFile Vortex to ProTaper Next for the efficacy of removal of root filling material: An ex vivo micro-computed tomography study. Saudi Dent J 2017; 30:63-69. [PMID: 30166873 PMCID: PMC6112351 DOI: 10.1016/j.sdentj.2017.10.007] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2017] [Revised: 10/24/2017] [Accepted: 10/29/2017] [Indexed: 11/25/2022] Open
Abstract
Aim This study compared the efficacy of ProFile Vortex (PV) with that of ProTaper Next (PTN) for the removal of root canal filling material. Materials and methods Twenty-six mesial canals of extracted mandibular first molars were instrumented, obturated with gutta-percha and sealant, and randomly allocated to a PTN (X3, X2, or X1) or PV group. The percentage of remaining material, amount of dentin removed, and extent of transportation were assessed using micro-computed tomography. The total time required for removal of material was calculated. Results Both systems were effective for material removal (p ≤ 0.001). Less time was required to remove material using PV (256.43 ± 108.95 s) than using PTN (333.31 ± 81.63 s; p ≤ 0.05). PV and PTN files removed approximately 84% and 78% of the filling material, respectively (p > .05). There was no significant canal transportation in either group. PV and PTN files removed 1.32 ± 0.48 mm3 and 1.63 ± 0.67 mm3 of the dentin, respectively (p = .18). Conclusion Our findings suggest that PV is as effective as PTN for removal of root canal filling material. Therefore, PV can be considered for use in endodontic retreatment, although more effective files or techniques are still required.
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Alfouzan K, Jamleh A. Fracture of nickel titanium rotary instrument during root canal treatment and re-treatment: a 5-year retrospective study. Int Endod J 2017; 51:157-163. [PMID: 28796346 DOI: 10.1111/iej.12826] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2017] [Accepted: 08/06/2017] [Indexed: 11/27/2022]
Abstract
AIM To evaluate retrospectively the incidence of K3 nickel titanium rotary instrument fracture in referred cases during root canal treatment and re-treatment. METHODOLOGY Clinical and radiographic reports of 12 867 endodontic cases treated at the King Abdulaziz medical city between January 2010 and November 2015 were reviewed to obtain information on intracanal fractured instruments with respect to the treatment performed, tooth type and the size and at what level the instrument fractured (coronal, middle or apical). The degree of canal curvature was classified into mild (<10° ), moderate (10-25° ) or severe (>25° ). Logistic regression was used to test the incidence of instrument fracture in relation to the root canal treatment performed and tooth type. Chi-square tests were used to analyse the fracture incidence in the treated teeth in respect to fracture level and fractured file diameter. The level of significance was set at 0.05. RESULTS Root canal treatment was performed on 8946 cases, whilst re-treatment was performed on 3921 cases. The fracture incidence was higher during re-treatment cases (2.96%) than in primary root canal treatment (0.74%) (P < 0.001) with a 1.41% incidence overall. There was a trend for more fractures in maxillary (1.68%) and mandibular (1.35%) molar teeth. Moreover, 56.6% of the fractured instruments occurred in severely curved canals, and the apical third of the root canal was the most common site for instrument fracture (85.7%), followed by middle (13.2%), and coronal (1.1%) thirds, mostly with file sizes 20 and 25 (59.9% and 25.27%, respectively). CONCLUSION The fracture incidence of K3 instruments was significantly greater during root canal re-treatment than root canal treatment, mainly with small instruments and in the apical third of the canals.
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Affiliation(s)
- K Alfouzan
- King Abdullah International Medical Research Centre, King Saud bin Abdulaziz University for Health Sciences, Restorative and Prosthetic Dental Sciences, College of Dentistry, Ministry of National Guard Health Affairs, Riyadh, Saudi Arabia
| | - A Jamleh
- King Abdullah International Medical Research Centre, King Saud bin Abdulaziz University for Health Sciences, Restorative and Prosthetic Dental Sciences, College of Dentistry, Ministry of National Guard Health Affairs, Riyadh, Saudi Arabia
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Karamifar K, Mehrasa N, Pardis P, Saghiri MA. Cleanliness of Canal Walls following Gutta-Percha Removal with Hand Files, RaCe and RaCe plus XP-Endo Finisher Instruments: A Photographic in Vitro Analysis. IRANIAN ENDODONTIC JOURNAL 2017; 12:242-247. [PMID: 28512494 PMCID: PMC5431710 DOI: 10.22037/iej.2017.47] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
INTRODUCTION Gutta-percha must be removed from the root canal space during retreatment to ensure a more favorable outcome. The aim of this study was to compare the efficacy of hand instruments, RaCe and RaCe plus XP-endo finisher instruments in removal of gutta-percha from root canal walls during retreatment. METHODS AND MATERIALS Thirty single-rooted premolars were prepared, obturated, and divided into three groups according to retreatment method; in group 1, retreatment was carried out by hand instruments, while in groups 2 and 3 retreatment was done using RaCe rotary files alone or accompanied by XP-endo finisher instruments, respectively. After retreatment, teeth were sectioned longitudinally and photographic images were taken. The amount of remaining gutta-percha in coronal, middle and apical thirds was quantified using Image J software. The two-way ANOVA and post hoc Tukey's tests were used to analyze data. The level of significance was set at 0.05. RESULTS RaCe cleaned the apical third significantly better than hand instrumentation. In the coronal third, RaCe+XP-endo finisher was more effective than RaCe. RaCe+XP-endo finisher was more effective than hand instrumentation in the entire root canal. The amount of remaining gutta-percha was the least in the apical part and increased toward the coronal part with the use of XP-endo finisher (P<0.05). CONCLUSION Rotary instrumentation was more effective in removing gutta-percha from the canal walls. Furthermore, use of XP-endo finisher file resulted in cleaner canal walls and was more effective in removing gutta-percha from the coronal toward the apical part of the canal.
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Affiliation(s)
- Kasra Karamifar
- Department of Endodontics, Dental School, Islamic Azad University, Shiraz Branch, Shiraz, Iran
| | - Neda Mehrasa
- Department of Endodontics, Dental School, Islamic Azad University, Shiraz Branch, Shiraz, Iran
| | - Pouyan Pardis
- Department of Endodontics, Dental School, Islamic Azad University, Shiraz Branch, Shiraz, Iran
| | - Mohammad Ali Saghiri
- Wisconsin Institute for Medical Research, University of Wisconsin School of Medicine and Public Health, Madison, WI, USA
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Bueno CEDS, Rios MDA, Coelho MS, Villela AM, de Martin AS, Kato AS, Alves VDO, Cunha RS. Influence of Passive Ultrasonic Irrigation on the Removal of Root Canal Filling Material in Straight Root Canals. Eur Endod J 2017; 2:1-5. [PMID: 33403342 PMCID: PMC7757959 DOI: 10.5152/eej.2017.16062] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2016] [Revised: 12/28/2016] [Accepted: 01/26/2017] [Indexed: 11/22/2022] Open
Abstract
Objective This study evaluates the efficacy of passive ultrasonic irrigation (PUI) in removing root canal filling material from endodontically treated teeth after using one of two reciprocating systems, Reciproc (VDW, Munich, Germany) or WaveOne (Dentsply Maillefer, Ballaigues, Switzerland), or one nickel-titanium (NiTi) rotary system, ProTaper Universal Retreatment (Dentsply Maillefer). Methods One hundred and twenty straight root canals of extracted human maxillary incisors were instrumented and then obturated. The specimens were divided into six groups (n=20) as follows: Group R, Reciproc R25 instrument without PUI; Group W, WaveOne Primary instrument without PUI; Group PT, ProTaper Universal Retreatment system without PUI; Group R-PUI, Reciproc R25 with PUI; Group W-PUI, WaveOne Primary with PUI and Group PT-PUI, ProTaper Universal Retreatment system with PUI. After removing the filling material, the teeth were cleaved longitudinally and photographed. The total canal space and remaining material were quantified with the aid of an imaging software tool. The Kruskal-Wallis test was used to identify significant differences between the groups. Results No statistically significant differences (P>0.05) in residual filling material were observed between the groups. Conclusion The use of PUI did not improve the removal of filling material from the root canals, regardless of the previously used instrumentation system.
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Affiliation(s)
| | | | - Marcelo Santos Coelho
- Department of Endodontics, São Leopoldo Mandic Dental Research Center, Campinas, Brazil
| | | | | | - Augusto Shoji Kato
- Department of Endodontics, São Leopoldo Mandic Dental Research Center, Campinas, Brazil
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Ozyurek T, Ozsezer-Demiryurek E. Efficacy of protaper next and protaper universal retreatment systems in removing gutta-percha in curved root canals during root canal retreatment. J Istanb Univ Fac Dent 2017; 51:7-13. [PMID: 28955590 PMCID: PMC5573468 DOI: 10.17096/jiufd.97431] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2016] [Accepted: 08/08/2016] [Indexed: 11/28/2022] Open
Abstract
Purpose: The aim of this study was to compare the cleanliness of root canal walls after retreatment using ProTaper Next (PTN), ProTaper Universal
Retreatment (PTR) nickel-titanium (NiTi) systems and Hedström hand files in curved mesial canals of mandibular molar teeth and the time required for gutta-percha and
sealer removal. Materials and Methods: Ninety mandibular molar teeth with curved mesial roots were instrumented up to #35.04 with Mtwo NiTi rotary instruments and
obturated using the continuous wave of condensation technique. Removal of gutta-percha and sealer was performed using one of the following: PTN and PTR NiTi systems
and Hedström hand files. Samples were placed on the VistaScan phosphor plates in the mesio-distal direction and the radiographs were taken. The digital radiographs
were analyzed using AutoCAD software. Also, the total time required for gutta-percha removal was calculated by a chronometer. Results: The total retreatment time was significantly shorter in the PTN and PTR groups compared with the manual group (p<0.05). There was a
significant difference between the groups according to the total residual gutta-percha and sealer (p<0.05). The PTN and PTR groups left significantly less
gutta-percha and sealer remnant than the manual group (p<0.001). Conclusion: Within the limitations of this study, the PTN and PTR groups showed less residual gutta-percha and sealer than the manual group. The NiTi
rotary systems were significantly faster than the manual group in the time required for gutta-percha and sealer removal.
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Affiliation(s)
- Taha Ozyurek
- Department of Endodontics Faculty of Dentistry Ondokuz Mayıs University Turkey
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Liu M, Xiong S, Tan F, Liu Y. Less extrusion debris during the retreatment of curved canals using twisted files with higher rotational speeds: an ex vivo study. BMC Oral Health 2017; 17:45. [PMID: 28093082 PMCID: PMC5240412 DOI: 10.1186/s12903-017-0340-2] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2016] [Accepted: 01/10/2017] [Indexed: 11/21/2022] Open
Abstract
BACKGROUND Debris extrusion from the apical foramen can be problematic in severely curved canals. This study aimed to assess the use of Twisted Files (TF) at different rotational speeds during retreatment, compared with manual technique using Triple-Flex Files (TFF). METHODS Forty-eight mesiobuccal root canals were randomized to four groups (n = 12 per group). In groups A, B, and C, gutta-percha was removed using TF at 500, 1000, and 1500 rpm, respectively, while it was removed using TFF in group D. Apical debris was collected in a pre-weighed centrifuge tube. The weight of dry debris was assessed by comparing the pre- and post-instrumentation weight for each group. RESULTS Instrumentation in group D (0.69 ± 0.04 mg) extruded significantly more debris than any of the TF groups (A: 0.54 ± 0.05 mg; B: 0.48 ± 0.04 mg; C: 0.42 ± 0.03 mg; all P < 0.001). In addition, increasing the rotational speed of TF decreased the amount of extruded debris (A vs. B: P = 0.006; B vs. C: P < 0.001; A vs. C: P < 0.001). CONCLUSIONS TF at 1500 rpm produced less apical extrusion debris than other TF operating speeds and TFF.
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Affiliation(s)
- Mengdong Liu
- School of Dentistry, Shandong University, 44, Wenhua West Road, Jinan, 250012 Shandong Province China
- School of Stomatology, Qingdao University, Qingdao, 266021 Shandong Province China
| | - Shijiang Xiong
- School of Dentistry, Shandong University, 44, Wenhua West Road, Jinan, 250012 Shandong Province China
| | - Fei Tan
- School of Stomatology, Qingdao University, Qingdao, 266021 Shandong Province China
| | - Yi Liu
- School of Stomatology, Qingdao University, Qingdao, 266021 Shandong Province China
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Özyürek T, Demiryürek EÖ. Comparison of the Effectiveness of Different Techniques for Supportive Removal of Root Canal Filling Material. Eur Endod J 2016; 1:1-6. [PMID: 32566900 PMCID: PMC7299057 DOI: 10.5152/eej.2016.16002] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2016] [Revised: 07/12/2016] [Accepted: 11/04/2016] [Indexed: 11/22/2022] Open
Abstract
Objective: To compare the cleanliness of oval cross-sectioned root canals after using different supportive techniques for removal of root canal filling material as part of retreatment process. Methods: One hundred mandibular canine teeth with flat oval cross-sectioned canals were instrumented up to #40.06 and obturated using the warm vertical compaction technique. Removal of the gutta-percha and sealer was performed using the D-RaCe nickel-titanium retreatment instruments. The roots were randomly divided into four groups of 25 teeth, and the activation processes were applied: XP-endo Finisher (XP), EndoActivator (EA) and IrrıSafe (IS). Conventional needle irrigation (CI) was used as the control group. The teeth were sectioned, and digital images were captured. The photographs were analysed using AutoCAD software regarding the area of residual root filling. Kruskal–Wallis and post hoc Dunn’s tests were performed for statistical analysis. Results: There was significantly less gutta-percha and sealer remnant in the XP group than in the other groups (P<0.05). The CI group contained significantly more gutta-percha and sealer remnant than the other groups (P<0.05). The apical third of the CI group had significantly more residual gutta-percha and sealer when compared to that of the other groups (P<0.05). Conclusion: Within the limitations of this study, the amount of gutta-percha and sealer in the XP group was lower than that in the EA, IS, and CI groups.
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Affiliation(s)
- Taha Özyürek
- Department of Endodontics, Ondokuz Mayis University, Faculty of Dentistry, Samsun, Turkey
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Joseph M, Ahlawat J, Malhotra A, Rao M, Sharma A, Talwar S. In vitro evaluation of efficacy of different rotary instrument systems for gutta percha removal during root canal retreatment. J Clin Exp Dent 2016; 8:e355-e360. [PMID: 27703601 PMCID: PMC5045680 DOI: 10.4317/jced.52488] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2015] [Accepted: 02/10/2016] [Indexed: 11/05/2022] Open
Abstract
BACKGROUND Complete removal of old filling material during root canal retreatment is fundamental for predictable cleaning and shaping of canal anatomy. Most of the retreatment methods tested in earlier studies have shown inability to achieve complete removal of root canal filling. Therefore the aim of this investigation was to assess the efficacy of three different rotary nickel titanium retreatment systems and Hedstrom files in removing filling material from root canals. MATERIAL AND METHODS Sixty extracted mandibular premolars were decoronated to leave 15 mm root. Specimen were hand instrumented and obturated using gutta percha and AH plus root canal sealer. After storage period of two weeks, roots were retreated with three (Protaper retreatment files, Mtwo retreatment files, NRT GPR) rotary retreatment instrument systems and Hedstroem files. Subsequently, samples were sectioned longitudinally and examined under stereomicroscope. Digital images were recorded and evaluated using Digital Image Analysing Software. The retreatment time was recorded for each tooth using a stopwatch. The area of canal and the residual filling material was recorded in mm2 and the percentage of remaining filling material on canal walls was calculated. Data was analysed using ANOVA test. RESULTS Significantly less amount of residual filling material was present in protaper and Mtwo instrumented teeth (p < 0.05) compared to NRT GPR and Hedstrom files group. Protaper instruments also required lesser time during removal of filling material followed by Mtwo instruments, NRT GPR files and Hedstrom files. CONCLUSIONS None of the instruments were able to remove the filling material completely from root canal. Protaper universal retreatment system and Mtwo retreatment files were more efficient and faster compared to NRT GPR fles and Hedstrom files. Key words:Gutta-percha removal, nickel titanium, root canal retreatment, rotary instruments.
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Affiliation(s)
- Mercy Joseph
- MDS. Conservative Dentistry and Endodontics, D.A.P.M.R.V. Dental College, Bangalore, India
| | - Jyoti Ahlawat
- Senior Resident. Department of Conservative Dentistry and Endodontics, Maulana Azad Institute of Dental Sciences, New Delhi, India
| | - Amit Malhotra
- Senior Resident. Department of Conservative Dentistry and Endodontics, Maulana Azad Institute of Dental Sciences, New Delhi, India
| | - Murali Rao
- Professor. Department of Conservative Dentistry and Endodontics, D.A.P.M.R.V. Dental College, Bangalore, India
| | - Abhimanyu Sharma
- MDS. Oral and Maxillofacial Surgery, ESIC Hospital, Rohini, New Delhi, India
| | - Sangeeta Talwar
- Professor. Department of Conservative Dentistry and Endodontics, Maulana Azad Institute of Dental Sciences New Delhi, India
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Kanaparthy A, Kanaparthy R. The Comparative Efficacy of Different Files in The Removal of Different Sealers in Simulated Root Canal Retreatment- An In-vitro Study. J Clin Diagn Res 2016; 10:ZC130-3. [PMID: 27437347 DOI: 10.7860/jcdr/2016/17731.7845] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2015] [Accepted: 03/11/2016] [Indexed: 11/24/2022]
Abstract
INTRODUCTION Root canal treatment enjoys a high success rate all over the world and has saved billions of teeth from extraction. However, there are instances of failure, the main causes being insufficient cleaning and inadequate obturation. In such cases the most conservative treatment option would be non-surgical retreatment. It requires regaining access to the entire root canal system through removal of the original root canal filling thus permitting further cleaning and re- obturation. Removal of gutta-percha and sealer becomes a critical step to gain access to the root canal system, remove necrotic tissue debris, bacteria and infected dentin. AIM To compare and evaluate the efficacy of manual hand Hedstrom files and two rotary retreatment file systems ProTaper Universal retreatment files and Mtwo(R) (retreatment) files in the removal of root canal filling material during root canal retreatment and the influence of the type of sealers zinc oxide eugenol and AH plus on the presence of remaining debris in the reinstrumented canals in the apical, middle and coronal third. MATERIALS AND METHODS Sixty single rooted human premolar teeth were divided into 3 Groups of 20 teeth each Group I (20 Teeth): prepared using hand K Files, Group II (20 Teeth): prepared using ProTaper rotary system and Group III (20 Teeth): prepared using Mtwo rotary system. In Groups- IA, IIA, IIIA: (10 teeth each) Obturation was done using Zinc Oxide Eugenol sealer and gutta percha. In Groups- IB, IIB, IIIB: (10 teeth each) obturation was done with AH Plus sealer and gutta percha. All the teeth were subjected to retreatment. Groups IA and IB with Hedstrom files, Groups IIA and IIB with ProTaper retreatment files and for Groups IIIA and IIIB with Mtwo retreatment Files. The roots were longitudinally split and were observed under a stereomicroscope for remaining amount of filling material on the canal walls. Statistical analysis was done using One-way ANOVA (Analysis of variance) test and Tukey HSD Test. RESULTS Mtwo(R) files showed statistically significant difference in the removal of filling material in the apical third and ProTaper R in the coronal and apical thirds. Better cleaning efficacy was seen in canals obturated with zinc oxide eugenol sealer. Mtwo(R) files showed better removal of filling material than ProTaper R followed by Hedstrom files, even though there was no statistically significant difference. CONCLUSION None of the instrument group showed complete removal of the filling material. It was easier to remove zinc oxide eugenol sealer than AH plus sealer.
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Affiliation(s)
- Aruna Kanaparthy
- Assistant Professor, Department of Operative Dentistry & Endodontics, College of Dentistry, Jizan University , Jizan, Saudi Arabia
| | - Rosaiah Kanaparthy
- Assistant Professor, Department of Periodontics, College of Dentistry, Jizan University , Jizan, Saudi Arabia
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Koçak MM, Koçak S, Türker SA, Sağlam BC. Cleaning efficacy of reciprocal and rotary systems in the removal of root canal filling material. J Conserv Dent 2016; 19:184-8. [PMID: 27099429 PMCID: PMC4815551 DOI: 10.4103/0972-0707.178706] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
Abstract
Aim: The aim of this study was to compare the efficacy of hand file, nickel titanium rotary instrument, and two reciprocating instruments for removing gutta-percha and sealer from the root canals. Materials and Methods: Eighty-eight mandibular premolar teeth were used. The root canals were shaped and filled with gutta-percha and a resin-based sealer. The specimens were divided into four groups according to the technique by which the root filling material was removed: Group 1 — Wave One; Group 2 — Reciproc; Group 3 — ProTaper; and Group 4 — Gates-Glidden burs and stainless steel hand file. Then teeth were split longitudinally and photographed. The images were transferred to a computer. The ratio of remaining filling material to the root canal periphery was calculated with the aid of ImageJ software. Statistical analysis was performed using Kruskal–Wallis and Mann–Whitney tests. Results: A significant difference was found among all groups (P < 0.001). The WaveOne group demonstrated significantly less remaining filling material. The greatest amount of filling material was found in specimens where gutta-percha was removed with Gates-Glidden burs and stainless steel hand file. Conclusion: The reciprocating files were found to be significantly more effective in removing the filling material from the canal walls compared to the rotational file and hand file.
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Affiliation(s)
| | - Sibel Koçak
- Department of Endodontics, Bülent Ecevit University, Zonguldak, Turkey
| | | | - Baran Can Sağlam
- Department of Endodontics, Bülent Ecevit University, Zonguldak, Turkey
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Vidal FT, Nunes E, Horta MCR, Freitas MRLDS, Silveira FF. Evaluation of three different rotary systems during endodontic retreatment - Analysis by scanning electron microscopy. J Clin Exp Dent 2016; 8:e125-9. [PMID: 27034750 PMCID: PMC4808305 DOI: 10.4317/jced.52685] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2015] [Accepted: 11/30/2015] [Indexed: 12/31/2022] Open
Abstract
Background Endodontic therapy is considered a series of important and interdependent steps, and failure of any of these steps may compromise the treatment outcome. This study aimed to evaluate the effectiveness of three different rotary systems in removing obturation materials during endodontic retreatment using scanning electron microscopy (SEM) analysis. Material and Methods Thirty-six endodontically treated teeth were selected and divided into 3 groups of 10 and 1 control group with 6 dental elements. The groups were divided according to the rotary system used for removing gutta-percha, as follows: G1: ProTaper system; G2: K3 system; G3: Mtwo system; and G4: Control group. Thereafter, the roots were split and the sections were observed under SEM, for analysis and counting of clear dentinal tubules, creating the variable “degree of dentinal tubule patency” (0: intensely clear; 1: moderately clear; 2: slightly clear; 3: completely blocked). The data were subjected to the Friedman and Kruskal-Wallis statistical tests. Results No differences were observed in the “degree of dentinal tubule patency” neither between the root thirds (to each evaluated group) nor between the groups (to each evaluated third). Nevertheless, when the three root thirds were grouped (providing evaluation of all root extension), the “degree of dentinal tubule patency” was lower in G1 than in G3 (p<0.05), but showed no differences neither between G1 and G2 nor G2 and G3. Conclusions No technique was able to completely remove the canal obturation material, despite G1 having shown better results, although without significant difference to G2 Key words:Scanning electron microscopy, NiTi, retreatment.
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Affiliation(s)
- Flávia-Teixeira Vidal
- DDS, MS, Graduate student, Departament of Dentistry, Pontifícia Universidade Católica de Minas Gerais, Belo Horizonte, Brasil
| | - Eduardo Nunes
- DDS, MS, PhD, Professor, Departament of Dentistry, Pontifícia Universidade Católica de Minas Gerais, Belo Horizonte, Brasil
| | | | | | - Frank-Ferreira Silveira
- DDS, MS, PhD, Professor, Departament of Dentistry, Pontifícia Universidade Católica de Minas Gerais, Belo Horizonte, Brasil
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Altunbas D, Kutuk B, Toyoglu M, Kutlu G, Kustarci A, Er K. Reciproc versus Twisted file for root canal filling removal: assessment of apically extruded debris. J Istanb Univ Fac Dent 2016; 50:31-37. [PMID: 28955563 PMCID: PMC5573529 DOI: 10.17096/jiufd.96734] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2015] [Accepted: 02/11/2016] [Indexed: 11/15/2022] Open
Abstract
PURPOSE The aim of this study was to evaluate the amount of apically extruded debris during endodontic retreatment with different file systems. MATERIALS AND METHODS Sixty extracted human mandibular premolar teeth were used in this study. Root canals of the teeth were instrumented and filled before being randomly assigned to three groups. Guttapercha was removed using the Reciproc system, the Twisted File system (TF), and Hedström-files (H-file). Apically extruded debris was collected and dried in pre-weighed Eppendorf tubes. The amount of extruded debris was assessed with an electronic balance. Data were statistically analyzed using one-way ANOVA, Kruskal-Wallis, and Mann-Whitney U tests. RESULTS The Reciproc and TF systems extruded significantly less debris than the H-file (p<0.05). However, no significant difference was found between the Reciproc and TF systems. CONCLUSION All tested file systems caused apical extrusion of debris. Both the rotary file (TF) and the reciprocating single-file (Reciproc) systems were associated with less apical extrusion compared with the H-file.
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Affiliation(s)
- Demet Altunbas
- Department of Endodontics, Faculty of Dentistry, Cumhuriyet University, Turkey
| | - Betul Kutuk
- Department of Endodontics, Oral and Dental Health Center Republic of Turkey Ministry of Health, Turkey
| | - Mustafa Toyoglu
- Department of Endodontics, Faculty of Dentistry, Cumhuriyet University, Turkey
| | - Gizem Kutlu
- Department of Endodontics, Faculty of Dentistry, Cumhuriyet University, Turkey
| | - Alper Kustarci
- Department of Endodontics, Faculty of Dentistry, Akdeniz University, Turkey
| | - Kursat Er
- Department of Endodontics, Faculty of Dentistry, Akdeniz University, Turkey
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Crozeta BM, Silva-Sousa YTC, Leoni GB, Mazzi-Chaves JF, Fantinato T, Baratto-Filho F, Sousa-Neto MD. Micro-Computed Tomography Study of Filling Material Removal from Oval-shaped Canals by Using Rotary, Reciprocating, and Adaptive Motion Systems. J Endod 2016; 42:793-7. [PMID: 26987688 DOI: 10.1016/j.joen.2016.02.005] [Citation(s) in RCA: 49] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2015] [Revised: 02/05/2016] [Accepted: 02/05/2016] [Indexed: 10/22/2022]
Abstract
INTRODUCTION This study evaluated filling material removal from distal oval-shaped canals of mandibular molars with rotary, reciprocating, and adaptive motion systems by using micro-computed tomography. METHODS After cone-beam computed tomography scanning, 21 teeth were selected, prepared up to a size 40 file, root filled, and divided into 3 groups (n = 7) according to the filling material removal technique: group PTUR, ProTaper Universal Retreatment combined with ProTaper Universal F2, F3, F4, and F5 files; group RP, Reciproc R50 file; and group TFA: TF Adaptive 50.04 files. The specimens were scanned preoperatively and postoperatively to assess filling material removal by using micro-computed tomography imaging, and the percent volume of residual filling material was calculated. RESULTS The statistical analysis showed the lowest percent volume of residual filling material at the coronal third in all groups (P < .05). There was no significant difference among the systems in the coronal third (P > .05). In the middle third, group TFA (31.2 ± 10.1) showed lower volume of residual filling material than group RP (52.4 ± 14.1) (P < .05). In the apical third, groups TFA (44.8 ± 20.6) and PTUR (48.6 ± 16.8) presented a lower percent volume of filling material than group RP (70.6 ± 7.2) (P < .05), as confirmed by the qualitative analysis. CONCLUSIONS The use of the adaptive motion increased the amount of root filling removed in the middle and apical thirds compared with the reciprocating motion. However, no technique was able to completely remove the filling material from the canals.
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Affiliation(s)
- Bruno Monguilhott Crozeta
- Department of Restorative Dentistry, School of Dentistry of Ribeirão Preto, University of São Paulo, São Paulo, Brazil
| | | | - Graziela Bianchi Leoni
- Department of Restorative Dentistry, School of Dentistry of Ribeirão Preto, University of São Paulo, São Paulo, Brazil
| | - Jardel Francisco Mazzi-Chaves
- Department of Restorative Dentistry, School of Dentistry of Ribeirão Preto, University of São Paulo, São Paulo, Brazil
| | - Thais Fantinato
- University of Ribeirão Preto, Ribeirão Preto, São Paulo, Brazil
| | | | - Manoel Damião Sousa-Neto
- Department of Restorative Dentistry, School of Dentistry of Ribeirão Preto, University of São Paulo, São Paulo, Brazil.
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Pawar AM, Thakur B, Metzger Z, Kfir A, Pawar M. The efficacy of the Self-Adjusting File versus WaveOne in removal of root filling residue that remains in oval canals after the use of ProTaper retreatment files: A cone-beam computed tomography study. J Conserv Dent 2016; 19:72-6. [PMID: 26957798 PMCID: PMC4760020 DOI: 10.4103/0972-0707.173204] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Aim: The current ex vivo study compared the efficacy of removing root fillings using ProTaper retreatment files followed by either WaveOne reciprocating file or the Self-Adjusting File (SAF). Materials and Methods: Forty maxillary canines with single oval root canal were selected and sectioned to obtain 18-mm root segments. The root canals were instrumented with WaveOne primary files, followed by obturation using warm lateral compaction, and the sealer was allowed to fully set. The teeth were then divided into two equal groups (N = 20). Initial removal of the bulk of root filling material was performed with ProTaper retreatment files, followed by either WaveOne files (Group 1) or SAF (Group 2). Endosolv R was used as a gutta-percha softener. Preoperative and postoperative high-resolution cone-beam computed tomography (CBCT) was used to measure the volume of the root filling residue that was left after the procedure. Statistical analysis was performed using t-test. Results: The mean volume of root filling residue in Group 1 was 9.4 (±0.5) mm3, whereas in Group 2 the residue volume was 2.6 (±0.4) mm3, (P < 0.001; t-test). Conclusions: When SAF was used after ProTaper retreatment files, significantly less root filling residue was left in the canals compared to when WaveOne was used.
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Affiliation(s)
- Ajinkya M Pawar
- Department of Conservative Dentistry and Endodontics, D Y Patil Dental School, Lohegaon, Pune, Maharashtra, India
| | - Bhagyashree Thakur
- Department of Dentistry, Sir HN Reliance Foundation Hospital, Mumbai, Maharashtra, India
| | - Zvi Metzger
- Department of Endodontology, The Goldschleger School of Dental Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Anda Kfir
- Department of Endodontology, The Goldschleger School of Dental Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Mansing Pawar
- Department of Conservative Dentistry and Endodontics, Government Dental College and Hospital, Mumbai, Maharashtra, India
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Evaluation of Apically Extruded Debris during Root Canal Retreatment with Two Different Rotary Systems Followed by a Self-Adjusting File. Int J Artif Organs 2016; 39:68-71. [DOI: 10.5301/ijao.5000467] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/19/2016] [Indexed: 11/20/2022]
Abstract
Purpose To compare the amount of apically extruded debris during root canal retreatment using ProTaper retreatment system (Dentsply Maillefer, Ballaigues, Switzerland), ProTaper retreatment system with Self-Adjusting File (SAF) system (ReDent-Nova, Ra'anana, Israel), Mtwo retreatment system (VDW, Munich, Germany), Mtwo retreatment system with SAF instruments. Methods In total, 72 extracted human mandibular incisor teeth were used. All root canals were prepared with ProTaper universal (Dentsply Maillefer) up to F2 file and filled with gutta percha and AH plus sealer using cold lateral condensation before being assembled randomly into 4 groups (n = 18 each). Root canal filling materials were removed using the ProTaper retreatment system, the ProTaper retreatment system followed by SAF system, Mtwo retreatment system and Mtwo retreatment system followed by SAF system. Debris extruded apically during the removal of canal filling material was collected into preweighed Eppendorf tubes. The tubes were then stored in an incubator at 70°C for 5 days. The weight of the dry extruded debris was established by subtracting the preretreatment and postretreatment weight of the Eppendorf tubes for each group. The data obtained were analyzed using Kruskal-Wallis test. Results All retreatment techniques caused the apical extrusion of debris. There was no significant difference between the groups statistically (p>0.05). Conclusions The results of this study showed that SAF system after Mtwo retreatment system and ProTaper retreatment system for improving retreatment has no significant effect on the amount of debris extruded apically.
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MICHELON C, FRIGHETTO M, LANG PM, BELLO MDC, PILLAR R, SERPA GF, BIER CAS. Efficacy of passive ultrasonic irrigation in removing root filling material during endodontic retreatment. REVISTA DE ODONTOLOGIA DA UNESP 2016. [DOI: 10.1590/1807-2577.02814] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
Abstract Introduction The aim of endodontic retreatment is to remove the previous root filling materials completely to allow for the subsequent steps of cleaning, canal shaping and filling replacement. Objective To evaluate the efficacy of passive ultrasonic irrigation (PUI) in the removal of residual root filling material after removing the bulk of the root filling with nickel-titanium rotary instruments. Material and method Eighteen mesial isthmus-containing roots of human mandibular molars were prepared and filled. The root canal filling was removed with the ProTaper Retreatment system and K-files. The specimens were randomized into 2 groups (n = 9), both irrigated with 2.5% NaOCl and 17% EDTA. In the conventional group, an irrigation syringe was used. In the PUI group, the PUI technique was used. The roots were sectioned longitudinally and evaluated under stereomicroscopy. Student’s t test was used to compare groups and the general linear model was used to compare the apical, cervical, and middle root thirds within each group, in regard to the percentages of remaining residual filling material. Result There was no statistically significant intergroup difference, irrespective of which root third was evaluated (P > 0.05). In the PUI group, the apical third showed a significantly higher percentage of residual filling material, in comparison with the cervical (P = 0.038) and middle (P = 0.029) thirds. Conclusion The PUI technique was not more effective than the conventional irrigation technique in removing residual root filling material during endodontic retreatment in root canals with a complex anatomy.
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de Siqueira Zuolo A, Zuolo ML, da Silveira Bueno CE, Chu R, Cunha RS. Evaluation of the Efficacy of TRUShape and Reciproc File Systems in the Removal of Root Filling Material: An Ex Vivo Micro–Computed Tomographic Study. J Endod 2016; 42:315-9. [DOI: 10.1016/j.joen.2015.11.005] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2015] [Revised: 10/29/2015] [Accepted: 11/09/2015] [Indexed: 10/22/2022]
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Monguilhott Crozeta B, Damião de Sousa-Neto M, Bianchi Leoni G, Francisco Mazzi-Chaves J, Terezinha Corrêa Silva-Sousa Y, Baratto-Filho F. A micro-computed tomography assessment of the efficacy of rotary and reciprocating techniques for filling material removal in root canal retreatment. Clin Oral Investig 2016; 20:2235-2240. [DOI: 10.1007/s00784-016-1728-0] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2015] [Accepted: 01/18/2016] [Indexed: 10/22/2022]
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45
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Silva EJNL, Brito ME, Ferreira VD, Belladonna FG, Neves AA, Senna PM, De-Deus G. Cytotoxic effect of the debris apically extruded during three different retreatment procedures. J Oral Sci 2016; 58:211-7. [DOI: 10.2334/josnusd.15-0658] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022]
Affiliation(s)
| | - Mônica E. Brito
- Department of Endodontics, Health Sciences Center, Grande Rio University
| | - Vivian D. Ferreira
- Department of Endodontics, Health Sciences Center, Grande Rio University
| | | | - Aline A. Neves
- Department of Pediatric Dentistry and Orthodontics, School of Dentistry, Federal University of Rio de Janeiro
| | - Plinio M. Senna
- Department of Endodontics, Health Sciences Center, Grande Rio University
| | - Gustavo De-Deus
- Department of Endodontics, Health Sciences Center, Grande Rio University
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Soi S, Yadav S, Sharma S, Sharma M. In Vitro Comparison of Apically Extruded Debris during Root Canal Preparation of Mandibular Premolars with Manual and Rotary Instruments. J Dent Res Dent Clin Dent Prospects 2015; 9:131-7. [PMID: 26697144 PMCID: PMC4682008 DOI: 10.15171/joddd.2015.026] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2013] [Accepted: 05/11/2015] [Indexed: 11/16/2022] Open
Abstract
Background and aims. During root canal
preparation, debris extruded beyond the apical foramen may result in
periapical inflammation and postoperative pain. To date no root canal
preparation method has been developed that extrudes no periapical
debris. The purpose of this study was to identify a system leading to
minimal extrusion of debris from the apical foramen. The study was
conducted to comparatively evaluate the amount of apical extrusion of
debris during root canal preparation using hand ProTaper and GT rotary
and RaCe rotary instruments using crown-down technique. Materials and methods.
Ninety freshly extracted human single-rooted mandibular premolars were
equally assigned to three groups (n=30). The root canals were
instrumented using hand ProTaper, GT rotary and RaCe rotary systems.
Debris and irrigant extruded from the apical foramen were collected into
vials. The mean weight of the remaining debris was calculated for each
group and subjected to statistical analysis. Results.
ANOVA was used to compare the mean dry weights of the debris extruded
in the three groups, followedby post hoc Tukey tests for multiple
comparisons the between groups. Highly significant differences were
found in the amount of debris extruded among all the groups
(P<0.001). The ProTaper group exhibited the highest mean debris
weight (0.8293±0.05433 mg) and the RaCe system exhibited the lowest mean
debris weight (0.1280±0.01606 mg). Conclusion. All
the systems tested resulted in apical extrusion of debris. However, the
hand ProTaper files extruded a significantly higher amount of debris
than GT and RaCe systems.
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Affiliation(s)
- Sonal Soi
- Reader, I.T.S Dental College, Hospital and Research Centre, Greater Noida, India
| | - Suman Yadav
- Professor, Department of Conservative Dentistry and Endodontics, Sri Guru Gobind Tricentenary Dental College, Research Center and Hospital, Gurgaon, India
| | - Sumeet Sharma
- Professor and Head of Department, Institute of Dental Studies and Technologies, Modinagar, India
| | - Mohit Sharma
- Reader, I.T.S Dental College, Hospital and Research Centre, Greater Noida, India
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47
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Colaco AS, Pai VA. Comparative Evaluation of the Efficiency of Manual and Rotary Gutta-percha Removal Techniques. J Endod 2015; 41:1871-4. [DOI: 10.1016/j.joen.2015.07.012] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2015] [Revised: 07/13/2015] [Accepted: 07/27/2015] [Indexed: 10/23/2022]
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Çanakçi BC, Er O, Dincer A. Do the Sealer Solvents Used Affect Apically Extruded Debris in Retreatment? J Endod 2015; 41:1507-9. [PMID: 26238529 DOI: 10.1016/j.joen.2015.02.010] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2014] [Revised: 02/05/2015] [Accepted: 02/07/2015] [Indexed: 11/20/2022]
Abstract
INTRODUCTION We evaluated apically extruded debris in the retreatment of root canals filled with different root canal sealers and gutta-percha using different solvents. METHODS Ninety human mandibular central and lateral teeth were prepared using the Reciproc #25 .08 nickel-titanium system (VDW GmbH, Munich, Germany) and were divided randomly into 6 groups. In groups 1, 2, and 3, root canals were filled with epoxy resin-based sealer and gutta-percha, and in groups 4, 5, and 6, root canals were filled with zinc oxide-eugenol-based sealer and gutta-percha. Each tooth was placed in a glass vial experimental apparatus. All root canal fillings were removed with the ProTaper Retreatment nickel-titanium system (Dentsply Maillefer, Ballaigues, Switzerland). During the retreatment procedure, in group 1, Resosolv (Pierre Rolland, Merignac, France) was used; in group 4, Endosolv E (Septodont, Paris, France) was used; and in groups 2 and 5, Guttasolv (Septodont) was used as the solvent. In the control groups (groups 3 and 6), no solvent was used. Reciproc #40 .06 was used for the final preparation. The times required for retreatments were recorded. RESULTS The weight of the extruded debris and the time required for retreatment were decreased significantly in the groups in which a solvent that was intended specifically for the root canal sealer was used (groups 1 and 4). In the Guttasolv groups (groups 2 and 5), the amount of apically extruded debris and the time required decreased for both root canal sealers. CONCLUSIONS The amount of apically extruded debris and the duration of retreatment were reduced by the use of a solvent specific to the sealer compared with a gutta-percha solvent or no solvent.
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Affiliation(s)
- Burhan Can Çanakçi
- Department of Endodontics, Faculty of Dentistry, Erciyes University, Kayseri, Turkey.
| | - Ozgur Er
- Department of Endodontics, Faculty of Dentistry, Trakya University, Edirne, Turkey
| | - Asiye Dincer
- Department of Endodontics, Faculty of Dentistry, Erciyes University, Kayseri, Turkey
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Can Sağlam B, Görgül G. Evaluation of surface alterations in different retreatment nickel-titanium files: AFM and SEM study. Microsc Res Tech 2015; 78:356-62. [PMID: 25736462 DOI: 10.1002/jemt.22481] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2014] [Accepted: 02/10/2015] [Indexed: 11/10/2022]
Abstract
The aim of this study was to evaluate the surface changes of nickel titanium (Ni-Ti) rotary retreatment files after three and five uses. Furthermore, the effects of 2% sodium hypochlorite and chloroform solutions and sterilization procedures on the NiTi rotary retreatment surfaces were investigated. ProTaper Retreatment files, R-endo files, and Mtwo retreatment files were used for this study. The palatinal roots of maxillary molar teeth were obturated with gutta percha and Ah26. Retreatment procedures were performed with these retreatment file systems. The surface changes of untreated NiTi rotary files that were used three and five times, immersed in NaOCl and chloroform and subjected to sterilization procedures were investigated with atomic force microscopy (AFM) and scanning electron microscopy (SEM). The RMS values, three dimensional images and SEM images at various magnifications were obtained. RMS values showed that all three NiTi rotary retreatment file systems showed significant deteriorations after three and five uses. Cracks, damages and spiral construction deteriorations were detected in the SEM images after three and five uses. Furthermore, the Mtwo 15 file was broken off after five uses. AFM data indicated that 2% NaOCl caused significant surface deteriorations on NiTi rotary files and both AFM and SEM evaluation showed that chloroform solution and sterilization procedures did not cause significant surface deteriorations. In conclusion, ProTaper retreatment, R-endo, and Mtwo retreatment files showed surface damages depending on retreatment procedures. Clinicians have to consider that retreatment files always have a tendency to break off after the third time they have been used.
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Affiliation(s)
- Baran Can Sağlam
- Department of Endodontics, Faculty of Dentistry, Bülent Ecevit University, Zonguldak, Turkey
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Garg A, Nagpal A, Shetty S, Kumar S, Singh KK, Garg A. Comparison of Time Required by D-RaCe, R-Endo and Mtwo Instruments for Retreatment: An in vitro Study. J Clin Diagn Res 2015; 9:ZC47-9. [PMID: 25859525 PMCID: PMC4378807 DOI: 10.7860/jcdr/2015/11100.5596] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2014] [Accepted: 01/06/2015] [Indexed: 11/24/2022]
Abstract
INTRODUCTION To evaluate and compare the amount of time required by three rotary NiTi instruments in removing gutta-percha from root canal during retreatment with hand file as control. MATERIALS AND METHODS Eighty human mandibular premolars with single straight root canals were prepared and obturated by cold lateral condensation with gutta-percha and AH Plus sealer. After two weeks, the 80 teeth were divided into one control group and 3 retreatment groups (n = 20 each). Gutta-percha was removed using H-files, the D-RaCe, or the Mtwo or the R-Endo retreatment systems. Retreatment time was calculated using stopwatch. RESULTS D-RaCe and Mtwo required significantly less time than R-Endo and hand file. Hand file took maximum time, which was significantly slower than all groups. However, D-RaCe and Mtwo retreatment time was statistically insignificant. CONCLUSION D-RaCe and Mtwo remove gutta-percha faster than R-Endo and Hand files.
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Affiliation(s)
- Akansha Garg
- Post graduate Student, Department of Conservative Dentistry & Endodontics, Kanti Devi Dental College and Hospital, Mathura, Uttar Pradesh, India
| | - Ajay Nagpal
- Reader, Department of Conservative Dentistry & Endodontics, Kanti Devi Dental College and Hospital, Mathura, Uttar Pradesh, India
| | - Shashit Shetty
- Professor and Head, Department of Conservative Dentistry & Endodontics, Kanti Devi Dental College and Hospital, Mathura, Uttar Pradesh, India
| | - Sunil Kumar
- Assistant Professor, Department of Conservative Dentistry & Endodontics, Kanti Devi Dental College and Hospital, Mathura, Uttar Pradesh, India
| | - Kamal Krishan Singh
- Post Graduate Student, Department of Conservative Dentistry & Endodontics, Kanti Devi Dental College and Hospital, Mathura, Uttar Pradesh, India
| | - Amit Garg
- Reader, Department of Conservative Dentistry & Endodontics, Kanti Devi Dental College and Hospital, Mathura, Uttar Pradesh, India
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