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Abboud T, Al-Tayyan M, Achour H, Alsayed Tolibah Y. Time Required for Root Canal Retreatment Using Continuous Rotation, Reciprocation, and Optimum Torque Reverse Motions: An In-Vitro Study. Cureus 2024; 16:e67786. [PMID: 39328697 PMCID: PMC11424227 DOI: 10.7759/cureus.67786] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/26/2024] [Indexed: 09/28/2024] Open
Abstract
Objective This study aims to evaluate the time required for canal preparation using three different movement kinematics during retreatment: continuous rotational motion, reciprocating motion, and optimum torque reverse (OTR) motion. Materials and methods The sample comprised 45 single-canal mandibular first premolars. The crowns were sectioned to standardize the root length to 16 mm. The root canals were prepared using the AF Gold mechanical preparation system (25/06). The roots were obturated using the lateral condensation technique and kept at 100% humidity at 37°C for seven days. The sample was randomly divided based on the movement pattern used during retreatment into three groups (N = 15): group 1 is continuous rotational motion using the ProTaper Universal Retreatment system; group 2 is reciprocating motion using the WaveOne Gold system; and group 3 is OTR motion using the ProTaper Universal Retreatment system. The retreatment time was measured in seconds by summing two times: T1 (time to reach the apex) and T2 (time to achieve adequate cleaning). The data were statistically analyzed using a one-way ANOVA with a significance level of α = 0.05. Results The results showed that the time required for canal preparation during retreatment with WaveOne Gold files using reciprocating motion was significantly longer than the time needed with ProTaper Universal Retreatment files using continuous rotary motion or OTR motion (P < 0.05). Conclusions The use of OTR motion did not affect the canal preparation time when used with files designed for continuous rotary motion retreatment. The use of WaveOne Gold files for canal preparation during retreatment was associated with a longer working time than ProTaper Universal Retreatment files.
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Cecagno FL, De Martin AS, Fontana CE, Cavenago BC, Nascimento WM, Limoeiro AGDS, Bueno CEDS. Evaluation of the Ability of 3 Reciprocating Instruments to Remove Obturation Material: A Micro-Computed Tomography Study. J Endod 2024; 50:376-380. [PMID: 38147908 DOI: 10.1016/j.joen.2023.12.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2023] [Revised: 12/11/2023] [Accepted: 12/18/2023] [Indexed: 12/28/2023]
Abstract
INTRODUCTION The purpose of this study was to evaluate the ability of the Reciproc, Reciproc Blue, and WaveOne Gold systems to remove filling material during endodontic retreatment of extracted human mandibular premolars. METHODS Thirty-nine teeth were instrumented with the Protaper Universal System to the F3 file and filled with the Tagger hybrid technique using an F3 gutta-percha cone and AH Plus cement. At the end of this period, the teeth were scanned with micro-computed tomography before and after removal of the filling material from the root canals. The teeth were divided into 3 groups (n = 13) based on the apical volume, depending on the systems used to remove the filling material. Group GR: Reciproc 40/.06; Group GRB: Reciproc Blue 40/.06; and Group GWG: WaveOne Gold 35/.06. The results were statistically analyzed using the tests of Kruskal-Wallis, Duncan, and analysis of variance at a significance level of 5%. RESULTS The results showed that there were no significant differences between the amounts of filling material removed, either for the apical and middle regions alone or in the overall evaluation for the 3 groups (P = .97). The time evaluation statistically showed that the GR and GWG groups required less time to clean the root canals than the GRB group. CONCLUSIONS Reciproc R40 files and WaveOne Gold Medium files required less time for endodontic treatment than Reciproc Blue R40 files. There was no difference in the ability to remove obturation material between the 3 instruments. No instrument was able to completely remove the filling material from the root canals.
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Affiliation(s)
- Fábio Luiz Cecagno
- Departament of Endodontics, Faculdade São Leopoldo Mandic, Instituto de Pesquisas São Leopoldo Mandic, Campinas, São Paulo, Brazil
| | - Alexandre Sigrist De Martin
- Departament of Endodontics, Faculdade São Leopoldo Mandic, Instituto de Pesquisas São Leopoldo Mandic, Campinas, São Paulo, Brazil
| | - Carlos Eduardo Fontana
- PUC Campinas, Center of Life Sciences, Programa de pós-graduação em Ciências da Saúde, Campinas, São Paulo, Brazil
| | | | - Wayne Martins Nascimento
- Departament of Endodontics, Faculdade São Leopoldo Mandic, Instituto de Pesquisas São Leopoldo Mandic, Campinas, São Paulo, Brazil
| | - Ana Grasiela da Silva Limoeiro
- Departament of Endodontics, Faculdade São Leopoldo Mandic, Instituto de Pesquisas São Leopoldo Mandic, Campinas, São Paulo, Brazil
| | - Carlos Eduardo da Silveira Bueno
- Departament of Endodontics, Faculdade São Leopoldo Mandic, Instituto de Pesquisas São Leopoldo Mandic, Campinas, São Paulo, Brazil.
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Singh KB, Akhtar MS, Nagar R, Agarwal A, Azhar S, Singh V. Comparative Analysis of the Efficacy of Various Retreatment File Systems in the Removal of Gutta-Percha in Retreatment Cases and Time Taken During the Procedure: An In Vitro Cone Beam CT Study. Cureus 2024; 16:e55551. [PMID: 38576634 PMCID: PMC10993640 DOI: 10.7759/cureus.55551] [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: 12/02/2023] [Accepted: 03/01/2024] [Indexed: 04/06/2024] Open
Abstract
Background Removing gutta-percha manually can be a challenging task, especially when addressing densely packed root-filling material, particularly in cases where resin-based sealers are employed for obturation. The use of nickel-titanium (NiTi) rotary instruments not only effectively shapes the root canal but also efficiently removes the endodontic filling from the curved canal during retreatment. Hence, incorporating rotary NiTi instruments in retreatment cases can alleviate fatigue for both patients and operators. Objectives This study aims to compare the efficacy of Neo-Endo retreatment files, R-Endo retreatment files, and K and H files in the removal of endodontic filling material. Additionally, the remnants of gutta-percha in root canals are evaluated using cone beam computed tomography (CBCT). Materials and methods A total of 60 extracted first maxillary molar teeth were selected for this study. Canal preparation was conducted using the step-back method up to an apical size of 40 K-file. The obturation process involved the use of gutta-percha points and AH Plus sealer in a lateral compaction technique. Post-operative CBCT scans were taken. The samples were randomly divided according to the retreatment files used: group I included Neo-Endo retreatment files, group II included R-Endo retreatment files, and group III included conventional K-files and Hedstroem files (H-Files). The retreatment procedure was considered complete when the last instrument easily reached the working-length range and was physically clean. A stopwatch was used to record the time taken by each file to remove the obturating material. T1 represented the total time (including irrigation and change of file) required to reach the apex, while T2 indicated the complete removal of materials from the canal with the last instrument. The overall time recorded (TT) was calculated as T1 + T2. The removal process was analyzed with CBCT scans. Results The Neo-Endo retreatment files removed the filling materials better and more quickly than the other files. Conclusions Despite the presence of residual filling material in all samples, the Neo-Endo retreatment files left the least amount of residual filling material and achieved the shortest completion time.
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Affiliation(s)
- Kapilesh B Singh
- Conservative Dentistry and Endodontics, SMBT Dental College & Hospital, Mumbai, IND
| | - Mohammad Salman Akhtar
- Conservative Dentistry and Endodontics, Teerthanker Mahaveer Dental College & Research Centre, Moradabad, IND
| | - Renuka Nagar
- Conservative Dentistry and Endodontics, Teerthanker Mahaveer Dental College & Research Centre, Moradabad, IND
| | - Abhinay Agarwal
- Conservative Dentistry and Endodontics, Teerthanker Mahaveer Dental College & Research Centre, Moradabad, IND
| | - Saleem Azhar
- Conservative Dentistry and Endodontics, Teerthanker Mahaveer Dental College & Research Centre, Moradabad, IND
| | - Vikas Singh
- Public Health Dentistry, Teerthanker Mahaveer Dental College & Research Centre, Moradabad, IND
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Elzanaty TK, Elashiry MM, Mahran AH. Retreatability of NeoSEALER Flo obturated with warm vertical compaction versus single-cone technique using two different retreatment systems. JOURNAL OF CONSERVATIVE DENTISTRY AND ENDODONTICS 2024; 27:286-292. [PMID: 38634031 PMCID: PMC11019814 DOI: 10.4103/jcde.jcde_314_23] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/07/2023] [Revised: 12/31/2023] [Accepted: 01/02/2024] [Indexed: 04/19/2024]
Abstract
Aim The aim of this study was to compare the retreatability of NeoSEALER Flo obturated with warm vertical compaction (WVC) and single-cone (SC) techniques using two different retreatment systems. Materials and Methods Thirty-two root canals were shaped and obturated with NeoSEALER Flo either in an SC obturation technique or a WVC technique. Samples were retreated using ProTaper retreatment or EdgeFile XR retreatment system. The percentage of remaining debris after retreatment was analyzed under a scanning electron microscope using ImageJ software. The time taken to reach full working length (WL) and induce patency was recorded. Statistical Analysis Statistical analysis was performed using an unpaired t-test and a one-way analysis of variance test. Results The percentage of remaining debris after retreatment was significantly higher in the SC technique than in the WVC technique, regardless of the retreatment system used. EdgeFile XR system removed more filling material than the ProTaper retreatment system, regardless of the obturation technique. The apical region showed significantly higher remaining debris than other regions in all groups. The WL and patency were achieved faster in the SC group, while in the WVC group, the EdgeFile XR system was faster. Conclusions The WVC technique showed better retrieval of the filling material; however, a longer time was taken for retreatment. EdgeFile XR system performed better in removing filling materials from inside the canals.
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Affiliation(s)
| | - Mohamed M. Elashiry
- Department of Endodontics, Dental College of Georgia, Augusta University, Augusta, GA, USA
- Department of Endodontics, Faculty of Dentistry, Ain Shams University, Cairo, Egypt
| | - Abeer Hashem Mahran
- Department of Endodontics, Faculty of Dentistry, Ain Shams University, Cairo, Egypt
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Sairaman S, Solete P, Jeevanandan G, Antony SDP, Kavoor S, Adimulapu HS. Comparative analysis of novel heat-treated retreatment file system on the removal of obturating material using nano-computed tomography. JOURNAL OF CONSERVATIVE DENTISTRY AND ENDODONTICS 2024; 27:82-86. [PMID: 38389750 PMCID: PMC10880466 DOI: 10.4103/jcde.jcde_224_23] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/13/2023] [Revised: 11/01/2023] [Accepted: 11/04/2023] [Indexed: 02/24/2024]
Abstract
Introduction The aim of nonsurgical retreatment is to remove the previous filling material followed by chemo-mechanical preparation of the canal to achieve proper disinfection of the root canal system. This is then followed by re-obturation. This study evaluates the time taken to retrieve the gutta-percha and the quantity of remaining filling material after retreatment with two different file systems. The quantity of remaining filling material was assessed using nano-computed tomography (CT) due to its increased accuracy. Materials and Methods Forty extracted single-rooted teeth were split into two groups at random and decoronated and obturated at a standard root length of 16 mm. Solite RS3 (SRS-3) Retreatment and ProTaper Universal Retreatment (PTUR) systems were used to retrieve the gutta-percha after a preoperative nano-CT scan. Postoperative nano-CT scan was taken and both the scans were superimposed to quantify the remaining filling material. The time taken to remove gutta-percha was measured using a stopwatch. The statistical analysis comparing the two groups was conducted using the independent t-test. Results The quantitative analysis of remaining filling material using nano-CT showed no statistical difference between both the file systems used (P > 0.05). However, SRS-3 took significantly less time in the removal of gutta-percha (P < 0.05). Conclusion Hence, we can conclude that there is no significant difference in the amount of remaining filling material between both the file systems. However, time taken to remove the gutta-percha was lesser in SRS-3 compared to PTUR file system.
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Affiliation(s)
- Sruthi Sairaman
- Department of Conservative Dentistry and Endodontics, Saveetha Dental College, Saveetha Institute of Medical and Technical Sciences, Saveetha University, Chennai, Tamil Nadu, India
| | - Pradeep Solete
- Department of Conservative Dentistry and Endodontics, Saveetha Dental College, Saveetha Institute of Medical and Technical Sciences, Saveetha University, Chennai, Tamil Nadu, India
| | - Ganesh Jeevanandan
- Department of Pediatric and Preventive Dentistry, Saveetha Dental College, Saveetha Institute of Medical and Technical Sciences, Saveetha University, Chennai, Tamil Nadu, India
| | - S. Delphine Priscilla Antony
- Department of Conservative Dentistry and Endodontics, Saveetha Dental College, Saveetha Institute of Medical and Technical Sciences, Saveetha University, Chennai, Tamil Nadu, India
| | - Sowmya Kavoor
- Department of Conservative Dentistry and Endodontics, Saveetha Dental College, Saveetha Institute of Medical and Technical Sciences, Saveetha University, Chennai, Tamil Nadu, India
| | - Hima Sandeep Adimulapu
- Department of Conservative Dentistry and Endodontics, Saveetha Dental College, Saveetha Institute of Medical and Technical Sciences, Saveetha University, Chennai, Tamil Nadu, India
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Monteiro TM, Cortes-Cid VO, Marceliano-Alves MFV, Campello AF, Bastos LF, Lopes RT, Siqueira JF, Alves FRF. Intracanal removal and apical extrusion of filling material after retreatment using rotary or reciprocating instruments: A new approach using human cadavers. Int Endod J 2024; 57:100-107. [PMID: 37886883 DOI: 10.1111/iej.13990] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2023] [Revised: 10/10/2023] [Accepted: 10/12/2023] [Indexed: 10/28/2023]
Abstract
AIM This study compared intracanal removal of filling as well as the frequency and volume of extruded material after retreatment with either HyFlex or Reciproc instruments in mandibular teeth from cadavers. METHODOLOGY The root canals of 14 pairs of contralateral single-rooted teeth in mandibles of cadavers were instrumented with Reciproc R40 and filled using lateral compaction. The mandibles were scanned in a micro-computed tomographic (micro-CT) device before and after retreatment procedures. The contralateral teeth were assigned to two groups (n = 14) according to the retreatment protocol using either HyFlex or Reciproc instrument systems. In the HyFlex group, the HyFlex Remover instrument was worked 3 mm short of the working length (WL), followed by HyFlex CM 40.04 and 50.04 at the WL. In the Reciproc group, the R50 instrument was worked up at the coronal two thirds, followed by two more cycles until the WL was reached. Pre- and post-operative micro-CT images were analysed for extrusion and intracanal removal of filling material. RESULTS After retreatment, extrusion of filling material occurred in 11 (78%) and 14 (100%) teeth from HyFlex and Reciproc groups respectively (p > .05). A similar volume of extruded material was observed after retreatment with both systems (p > .05). A significant decrease in the intracanal filling volume was verified after retreatment with both tested systems (p < .05). However, residual filling material was found in all root canals, regardless of the system. The amount of filling material removed (HyFlex = 80.8%; Reciproc = 65.9%) and the operation time was similar between systems (p > .05). CONCLUSIONS A high frequency of filling material extrusion was observed after retreatment with the two systems in a cadaver model, with no significant difference between them. Both protocols obtained similar efficacy in filling material removal procedures, although none completely cleaned the canals.
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Affiliation(s)
- Thamyres M Monteiro
- Postgraduate Program in Dentistry, University of Grande Rio (UNIGRANRIO), Duque de Caxias, Brazil
| | - Victor O Cortes-Cid
- Postgraduate Program in Dentistry, University of Grande Rio (UNIGRANRIO), Duque de Caxias, Brazil
| | | | - Andrea F Campello
- Postgraduate Program in Dentistry, University of Grande Rio (UNIGRANRIO), Duque de Caxias, Brazil
- Department of Endodontics, Faculty of Dentistry, Iguaçu University (UNIG), Nova Iguaçu, Brazil
| | - Luan F Bastos
- Department of Nuclear Energy, Rio de Janeiro Federal University, Rio de Janeiro, Brazil
| | - Ricardo T Lopes
- Department of Nuclear Energy, Rio de Janeiro Federal University, Rio de Janeiro, Brazil
| | - José F Siqueira
- Postgraduate Program in Dentistry, University of Grande Rio (UNIGRANRIO), Duque de Caxias, Brazil
- Department of Endodontics, Faculty of Dentistry, Iguaçu University (UNIG), Nova Iguaçu, Brazil
| | - Flávio R F Alves
- Postgraduate Program in Dentistry, University of Grande Rio (UNIGRANRIO), Duque de Caxias, Brazil
- Department of Endodontics, Faculty of Dentistry, Iguaçu University (UNIG), Nova Iguaçu, Brazil
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Abdelnaby P, Ibrahim M, ElBackly R. In vitro evaluation of filling material removal and apical debris extrusion after retreatment using Reciproc blue, Hyflex EDM and ProTaper retreatment files. BMC Oral Health 2023; 23:902. [PMID: 37990209 PMCID: PMC10664678 DOI: 10.1186/s12903-023-03579-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2023] [Accepted: 10/25/2023] [Indexed: 11/23/2023] Open
Abstract
OBJECTIVES To evaluate the amount of remaining filing material and apical debris extrusion after retreatment using Reciproc Blue, Hyflex EDM and ProTaper Retreatment Files. MATERIALS AND METHODS Thirty-six extracted permanent mandibular first molars with moderately curved mesial roots were selected. Mesiobuccal canals were prepared using the ProTaper Next system up to size X2 and filled using gutta-percha and Adseal sealer via cold lateral compaction. Teeth were randomly divided into three equal groups (n = 12): Group 1: Reciproc Blue (RB)(VDW, Germany), Group 2: Hyflex EDM (HEDM)(Coltene/Whaledent, Switzerland), Group 3: ProTaper Universal Retreatment file system + ProTaper Next file system (PTUR + PTN)( Dentsply Maillefer, Switzerland). Eppendorf tubes were used to collect the apically extruded debris. Cone-beam computed tomographic scans were taken prior to and after retreatment and the volume of remaining filling material was assessed at the coronal, middle and apical levels. Statistical analysis was performed using the Kruskal-Wallis test, Friedman's test and Wilcoxon Sign Rank test. Significance level was set at p value 0.05. RESULTS There were no statistically significant differences among the three groups in the reduction of the volume of the filling material or in the amount of apically extruded debris. CONCLUSION All the tested filing systems showed similar efficacy in removing the filling material, however, none of them could achieve its complete removal. Apical extrusion of debris occurred with all the systems used with no significant difference between the three groups.
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Affiliation(s)
- Passent Abdelnaby
- Conservative Dentistry Department, MS Student, Endodontics, Faculty of Dentistry, Alexandria University, Alexandria, Egypt
| | - Mohamed Ibrahim
- Conservative Dentistry Department, Endodontics, Faculty of Dentistry, Alexandria University, Alexandria, Egypt
| | - Rania ElBackly
- Conservative Dentistry Department, Endodontics, Faculty of Dentistry, Alexandria University, Alexandria, Egypt.
- Tissue Engineering Laboratories, Faculty of Dentistry, Alexandria University, Alexandria, Egypt.
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Kagan Bas M, Meva Durmazpinar P, Betul Basturk F, Sazak Ovecoglu H. In vitro evaluation of temperature change on the root surface after the removal of root canal filling. Proc Inst Mech Eng H 2023; 237:1330-1336. [PMID: 37861317 DOI: 10.1177/09544119231201790] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2023]
Abstract
This study aimed to compare the temperature changes occurring on the root surfaces after the removal of root canal filling with two different root canal sealers by two different reciprocating files. Sixty extracted teeth with a single root and canal were used in this study. After chemomechanical preparation, the root canals in the experimental groups were filled with gutta-percha and AH Plus or CeraSeal, while those of the control groups were filled with gutta-percha only. Resiproc or WaveOne Gold were used for the removal of the root canal filling. Temperature changes in the middle and apical third of the root surface were recorded by a thermal camera at different time intervals. Among the groups using the same sealer, the temperature rise observed on the root surface at the end of 90 s in the Resiproc groups was found to be significantly higher than that of the WaveOne Gold groups.
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Affiliation(s)
- Muhammed Kagan Bas
- Department of Endodontics, Faculty of Dentistry, Marmara University, Istanbul, Turkey
| | | | - Fatima Betul Basturk
- Department of Endodontics, Faculty of Dentistry, Istanbul Gelisim University, Istanbul, Turkey
| | - Hesna Sazak Ovecoglu
- Department of Endodontics, Faculty of Dentistry, Marmara University, Istanbul, Turkey
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Hülsmann M, Klinger M, Dullin C, Baxter S. Removal of Thermafil obturators using two different techniques: A comparative Ex Vivo study. J Endod 2023:S0099-2399(23)00242-X. [PMID: 37164168 DOI: 10.1016/j.joen.2023.04.014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2023] [Revised: 04/25/2023] [Accepted: 04/29/2023] [Indexed: 05/12/2023]
Abstract
INTRODUCTION The aim of this ex vivo study was to compare two techniques for removal of Thermafil obturators from curved root canals in mandibular molars. METHODS Sixty mesial root canals in extracted mandibular molars were distributed into matched pairs according to degree and radius of curvature and were prepared to size 35/.04 and obturated with Thermafil obturators size 35. Each tooth was embedded in resin, mounted in a mannequin head and isolated with rubber dam to simulate clinical conditions. Removal of obturators was undertaken under a dental operating microscope by an experienced endodontist using either the FragRemover loop device, or reciprocating NiTi instruments. Pre- and postoperative micro-CT scans were taken to compare the amount of remaining filling material and of removed dentin. Eventual problems during removal attempts were recorded. RESULTS Using Reciproc 24 carriers (80%) were removed, 16 in one piece, 8 in small pieces, in 6 cases removal failed. The FragRemover removed 12 carriers (40%), all of these completely, but in 18 cases removal failed (P < 0.05). Reciproc left less remaining filling material than the FragRemover (P < 0.05) but removed significantly more dentin in the apical part of the root canal (P < 0.01). There was no significant difference concerning the total amount of removed dentin (P > 0.05) between both groups. Seven complications occurred in the Reciproc group. In five teeth working length could not be reached, in two teeth a Reciproc file R25 fractured. With the FragRemover 64 complications occurred, in 36 cases, including second removal attempts, the loop slipped over the carrier, in 24 cases the top of the carrier was sheared off. In nine cases separation of the core occurred too far apically, not allowing further use of the FragRemover. In four cases the wire loop tore. CONCLUSIONS Reciproc was more effective in removal of Thermafil carriers, whereas using the FragRemover less dentin was removed in the apical part of the root canal and more obturation material was left.
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Affiliation(s)
- Michael Hülsmann
- Center of Dental Medicine, Clinic for Preventive Dentistry, Periodontology and Cariology, University of Zürich, Zürich, Switzerland.
| | | | - Christian Dullin
- Dept. of Diagnostic Radiology, University of Göttingen, Göttingen, Germany
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Madarati AA, Sammani AMN, Alnazzawi AA, Alrahlah A. Efficiency of the new reciprocating and rotary systems with or without ultrasonics in removing root-canals filling with calcium silicate-based sealer (MTA). BMC Oral Health 2023; 23:5. [PMID: 36597070 PMCID: PMC9811723 DOI: 10.1186/s12903-022-02684-3] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2022] [Accepted: 12/21/2022] [Indexed: 01/05/2023] Open
Abstract
BACKGROUND To compare the efficiency of endodontic rotary and reciprocating systems in removing calcium silicate-sealer based fillings and to investigate the impact of passive ultrasonic irrigation (PUI) on their efficiency. MATERIALS AND METHODS 160 root-canals were instrumented, filled with gutta-percha and calcium silicate based-sealer and divided into 10 equal groups. Five groups in which the reciprocating systems (WaveOne-Gold, Reciproc-Blue and R-Motion) and rotary systems (Fanta-AF-One and Tango-Endo) were used to remove root-canals' fillings. In the other five groups the fillings were removed by the same systems then additionally with PUI. The times to complete retreatments procedures were recorded. Micro-computed tomography's analysis of the root-canals fillings' volume before and after retreatments was used to determine the remaining filling materials (RFMs) volumes. RESULTS The RFMs after using rotary systems (10.1%) was greater than after using reciprocating systems (3.8%) (P < 0.001). The RFMs after using WOG (2%) and RB systems (2.6%) were less than those in the RM (6.8%), TE (9.5%) and FAFO (10.7%) systems [P < 0.05]. The times required to remove the filling materials using the TE (3.7 min), FAFO (4.1 min) and RM (4.1 min) systems were shorter than those required by the RB (5.4 min) and WOG (4.9 min) systems [P < 0.05]. Using PUI resulted in less RFMs (1.44%) when compared to using only rotary or reciprocating systems (6.27%) [P < 0.001]. CONCLUSIONS Endodontic reciprocation systems were more effective, but needed longer times than rotary systems in removing calcium silicate based- sealers fillings. The PUI significantly improved removal of the root-canals' filling materials. CLINICAL RELEVANCE Reciprocating systems and PUI are recommended whenever root-canals retreatment is considered regardless of using calcium silicate-based sealers.
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Affiliation(s)
- Ahmad A. Madarati
- grid.412892.40000 0004 1754 9358Restorative Dental Sciences Department, College of Dentistry, Taibah University, Madina, Kingdom of Saudi Arabia ,Riyadh, 13311 Kingdom of Saudi Arabia
| | - Aya M. N. Sammani
- grid.412892.40000 0004 1754 9358Department of Substitutive Dental Sciences, College of Dentistry, Taibah University, Madina, Kingdom of Saudi Arabia
| | - Ahmad A. Alnazzawi
- grid.412892.40000 0004 1754 9358Department of Substitutive Dental Sciences, College of Dentistry, Taibah University, Madina, Kingdom of Saudi Arabia
| | - Ali Alrahlah
- grid.56302.320000 0004 1773 5396Restorative Dental Sciences Department, Engineer Abdullah Bugshan Research Chair for Dental and Oral Rehabilitation, College of Dentistry, King Saud University, Riyadh, Kingdom of Saudi Arabia
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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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Mustafa M, Attur K, Bagda KK, Singh S, Oak A, Kathiria N. An Appraisal on Newer Endodontic File Systems: A Narrative Review. J Contemp Dent Pract 2022; 23:944-952. [PMID: 37283003 DOI: 10.5005/jp-journals-10024-3398] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
AIM This narrative review aims to explore and elicit the newer endodontic file systems used for root canal treatments. BACKGROUND The primary goals of endodontic therapy continue to be the mechanical enlargement and shaping of the intricate endodontic root canal systems to aid in disinfection. Nowadays endodontists have access to a wide range of endodontic file systems for root canal preparations with various design characteristics and benefits. REVIEW RESULTS ProTaper Ultimate (PTU) files' tip have a triangular convex cross-section, an offset mass of rotating design, a maximum flute diameter of 1.0 mm, and are constructed of gold wire, hence, commonly applied in conditions with restricted accessibility or an extremely curved canal. TruNatomyhas advantages over other cutting-edge file systems like maximum flute diameter of the corona, reduced distance between active cutting flutes, and shorter handles in comparison to SX instruments. In comparison to PTU files, ProTaper Gold (PTG) files are noticeably more elastic and fatigue-resistant. Compared to files in the F1-F3 range, size S1 and S2 files have a significantly longer fatigue life. MicroMega One RECI is more resistant to cyclic fatigue because of its heat treatment and reciprocating action and the C-wire heat treatment of the former gives it flexibility and controlled memory, enabling the prebending of the file. The RECIPROC blue demonstrated enhanced flexibility, increased fatigue resistance, and lower microhardness while maintaining the same surface qualities. CONCLUSION As per the necessity and requirement on case to case basis, every endodontic file system has advantages and disadvantages as mentioned in this narrative review. According to the need, an endodontist can select the file system which is required specifically. Although several studies are comparing these various systems in the literature, this narrative review aims to give the clinician a summary of some recently launched endodontic rotary file systems available in the market and their clinical uses. CLINICAL SIGNIFICANCE As per the priority and need of the case, whether removal and extrusion of debris, reduction of micro-organisms, keeping canal anatomy, and cutting efficiency, a specific required file system can be utilized.
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Affiliation(s)
- Mohammed Mustafa
- Department of Conservative Dentistry and Endodontics, Narsinhbhai Patel Dental College & Hospital, Sankalchand Patel University, Visnagar, Gujarat, India; Center for Transdisciplinary Research, Saveetha Dental College, Department of Conservative Dentistry and Endodontics, Saveetha Institute of Medical and Technical Sciences, Saveetha University, Chennai, Tamil Nadu, India, Phone: +91 9987697896; e-mail:
| | - Kailash Attur
- Department of Conservative Dentistry and Endodontics, Narsinhbhai Patel Dental College & Hospital, Sankalchand Patel University, Visnagar, Gujarat, India
| | - Kamal Kumar Bagda
- Department of Conservative Dentistry and Endodontics, Goenka Research Institute of Dental Sciences, Gandhinagar, Gujarat, India
| | - Shalini Singh
- Department of Conservative Dentistry and Endodontics, Narsinhbhai Patel Dental College & Hospital, Sankalchand Patel University, Visnagar, Gujarat, India
| | - Anjali Oak
- Department of Conservative Dentistry and Endodontics, Narsinhbhai Patel Dental College & Hospital, Sankalchand Patel University, Visnagar, Gujarat, India
| | - Nishtha Kathiria
- Department of Conservative Dentistry and Endodontics, Narsinhbhai Patel Dental College & Hospital, Sankalchand Patel University, Visnagar, Gujarat, India
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Madarati AA, Sammani AMN, Alnazzawi AA, Alrahlah A, Pedullà E. Efficiency of reciprocating systems reciprocated at different angles in removing root-canals fillings with an MTA-type sealer: an Ex-vivo study. BMC Oral Health 2022; 22:357. [PMID: 35978330 PMCID: PMC9387022 DOI: 10.1186/s12903-022-02390-0] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2022] [Accepted: 08/10/2022] [Indexed: 02/08/2023] Open
Abstract
BACKGROUND There have been no reports on the impact of different reciprocating angles on retreatment performance of reciprocating files. This ex-vivo study compared the efficiency of three reciprocating systems in removing MTA-type sealer-based filling materials and investigated the influence of different reciprocating angles on their retreatment ability. METHODS 140 root-canals were instrumented to a 35 apical size and filled with an MTA-type sealer and gutta-percha cones. Samples were scanned by micro-computed-tomography and the root-canals fillings volumes were measured. Samples were divided into 7 groups according to the reciprocating angles at which the WaveOne-Gold (WOG), Reciproc-Blue (RB) and R-Motion (RM) systems were reciprocated to remove the root-canals' fillings. The WOG-150/30, WOG-90/30, RB-150/30, RB-90/30, RM-150/30 and RM-90/30 groups in which the systems were reciprocated at 150/30 and 90/30 (counterclockwise/clockwise) angles. In the RB-270/30 group the RB system was reciprocated at 270/30 angles. Samples were re-scanned and the remaining filling materials' (RFMs) volumes were measured. The percentage of the RFMs volume and its mean value for each group were calculated and data were statistically analysed at 0.05 significance level. RESULTS The WOG system resulted in less RFMs (2.24%) when reciprocated at 90/30 angles compared to that resulted from the 150/30 angles (4.96%) [P = 0.002]. The RB system reciprocated at 90/30 angles resulted in less RFMs (2.67%) compared to that resulted from the 270/30 angles (6.64%) [P = 0.001]. The RFMs after using RM system reciprocated at 90/30 (6.02%) and 150/30 (7.61%) were greater than those of WOG (2.24 and 4.96%) and RB (2.67 and 4.34%) reciprocated at the same angles (P < 0.05). The longest time required to remove the filling materials was recorded with the RB-270/30 group (6.06 min) [P = 0.00]. The times required when the WOG, RB and RM files reciprocated at 90/30 angles (3.59, 3 and 3.05 mins, respectively) were shorter than those when files were reciprocated at 150/30 angles (5.25, 4.98 and 3.67 min, respectively) [P < 0.05]. CONCLUSIONS The WOG and RB systems removed more MTA-type sealer-based root-canals fillings than the RM system. Lower counterclockwise reciprocating angles improve the retreatment ability of reciprocating systems, especially the WOG system and can reduce the time required for retreatment procedures.
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Affiliation(s)
- Ahmad A. Madarati
- grid.412892.40000 0004 1754 9358Restorative Dental Sciences Department, College of Dentistry, Taibah University, Madina, Kingdom of Saudi Arabia ,Present Address: Riyadh (12252), Kingdom of Saudi Arabia
| | - Aya M. N. Sammani
- grid.412892.40000 0004 1754 9358Department of Substitutive Dental Sciences, College of Dentistry, Taibah University, Madina, Kingdom of Saudi Arabia
| | - Ahmad A. Alnazzawi
- grid.412892.40000 0004 1754 9358Department of Substitutive Dental Sciences, College of Dentistry, Taibah University, Madina, Kingdom of Saudi Arabia
| | - Ali Alrahlah
- grid.56302.320000 0004 1773 5396Restorative Dental Sciences Department, College of Dentistry, King Saud University, Riyadh, Kingdom of Saudi Arabia
| | - Eugenio Pedullà
- grid.8158.40000 0004 1757 1969Department of General Surgery and Surgical-Medical Specialties, University of Catania, Catania, Italy
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Medium- and Long-Term Re-Treatment of Root Canals Filled with a Calcium Silicate-Based Sealer: An Experimental Ex Vivo Study. MATERIALS 2022; 15:ma15103501. [PMID: 35629528 PMCID: PMC9145273 DOI: 10.3390/ma15103501] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/16/2022] [Revised: 05/05/2022] [Accepted: 05/10/2022] [Indexed: 11/18/2022]
Abstract
This study investigated the possibility of re-treating a calcium silicate-based sealer (CSBS), compared to an epoxy-resin sealer (RBS), using rotary instrumentation at different times from obturation (1 month/1 year). Thirty-six human mandibular premolars, extracted as a result of orthodontic or periodontal problems, were instrumented and randomly divided into three groups of 12: BR and BR*, which were filled with CSBS and re-treated after one month and one year of storage, respectively, and AH, which was filled with RBS and re-treated after one month. The same re-treatment protocol was used for all teeth, and the times required for the procedure was recorded. The re-treated specimens were longitudinally sectioned and examined at the stereomicroscope (SM) at 20× magnification. Image J Software was used to process the microphotographs. The percentage of residual filling materials in the root canal and the apical third, the ability to reach working length WL and patency, and the time taken to complete the re-treatment were recorded and analyzed by ANOVA and post hoc Bonferroni test (p = 0.05). Scanning electron microscopy (SEM) and coupled energy-dispersive spectroscopy (EDS) were applied to representative samples to evaluate canal cleanliness and chemical elements. Patency and WL were re-established in all of the teeth. Residual filling materials were retained in all specimens of the three groups. The mean percentage of residual materials was significantly different between BR and BR* (p-value = 0.048), with BR* showing the highest values. The mean time to complete re-treatment was significantly lower for AH, followed by BR (p = 0.0001) and BR* (p = 0.0078). Conclusions: After both medium and long storage periods, the CSBS can be concluded to have been successfully removed from canals with simple anatomy.
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Boetto AC, Arce-Brisson G, Zmener O, Pameijer C, Della-Porta R, Picca M. Ability of two reciprocating Nickel-Titanium instruments for guttapercha/ sealer removal in simulated curved root canals. ACTA ODONTOLOGICA LATINOAMERICANA : AOL 2022; 35:39-44. [PMID: 35700540 DOI: 10.54589/aol.35/1/39] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/01/2021] [Accepted: 02/01/2022] [Indexed: 06/15/2023]
Abstract
The aim of this study was to compare the capacity of two reciprocating NiTi instruments in removing gutta-percha/sealer material from simulated curved root canals (SCRC). The time required for filling material removal was also recorded. Twenty SCRCs were divided into two groups of 10 (n=10) samples each. In Group 1, the SCRC were prepared to a R25 Reciproc Blue instrument (RCPB; VDW, Munich, Germany). In Group 2 the SCRC were prepared to a Primary WaveOne Gold instrument (PWOG; Dentsply, Ballaigues, Switzerland). In both groups, the canals were filled with matched-taper single gutta-percha cones and AH Plus sealer. Filling materials were removed with R25 RCPB (Group 1) and PWOG (Group 2). The amount of remaining gutta-percha/sealer was calculated at three predetermined levels of evaluation located at 2, 6 and 10 mm from the WL and expressed in percentages. Canals re-treated with RCPB contained significantly less remaining gutta-percha/sealer compared tocanalspreparedwith PWOG (P=0.02). The RCPB instruments required significantly less time to complete the retreatment procedures (P<0.01). No unwinding or instrument separation was noted. RCPB instruments removed significantly more gutta-percha/sealer from simulated curved root canals than PWOG. However, neither of the tested instruments completely removed all filling materials.
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Affiliation(s)
- Ana C Boetto
- Universidad Nacional de Córdoba, Facultad de Odontología, Cátedra de Endodoncia, Córdoba, Argentina
| | - Georgette Arce-Brisson
- Universidad Nacional de Córdoba, Facultad de Odontología, Cátedra de Endodoncia, Córdoba, Argentina
| | - Osvaldo Zmener
- Universidad del Salvador/Asociación Odontológica Argentina, Facultad de Medicina, Escuela de Odontología, Post Grado de Endodoncia, Buenos Aires, Argentina.
| | - Cornelis Pameijer
- University of Connecticut School of Dental Medicine, Department of Reconstructive Sciences, Connecticut, USA
| | - Roberto Della-Porta
- Universidad del Salvador/Asociación Odontológica Argentina, Facultad de Medicina, Escuela de Odontología, Post Grado de Endodoncia, Buenos Aires, Argentina
| | - Mariana Picca
- Universidad de Buenos Aires, Facultad de Odontología, Cátedra de Materiales Dentales, Buenos Aires, Argentina
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Tietz L, Furlan RD, da Rosa RA, Duarte MAH, Alcalde MP, Vivan RR, Weissheimer T, Só MVR. Efficacy of reciprocating instruments and final irrigant activation protocols on retreatment of mesiobuccal roots of maxillary molars: a micro-CT analysis. Restor Dent Endod 2022; 47:e13. [PMID: 35284326 PMCID: PMC8891472 DOI: 10.5395/rde.2022.47.e13] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2021] [Revised: 08/22/2021] [Accepted: 09/07/2021] [Indexed: 11/20/2022] Open
Abstract
Objectives This study evaluated the efficacy of 3 reciprocating systems and the effects of 2 instruments for irrigant activation on filling material removal. Materials and Methods Forty mesiobuccal roots of maxillary molars were prepared up to size 25.06 and obturated. Micro-computed tomography (micro-CT) examination #1 was performed. Teeth were then divided into 4 groups (n = 10), according to the retreatment protocol: (1) manual, (2) Reciproc Blue, (3) WaveOne Gold, and (4) X1 Blue. Micro-CT examinations #2 and #3 were performed after filling removal and repreparation, respectively. Next, all teeth were divided into 2 new groups (n = 20) according to the irrigant activation protocol: XP Clean (XP Clean size 25.02) and Flatsonic (Flatsonic ultrasonic tip). Micro-CT examination #4 was performed after irrigant activation. Statistical analysis was performed with a significance level set at 5%. Results WaveOne Gold removed a significantly greater amount of filling material than the manual group (p < 0.05). The time to reach the WL was similar for all reciprocating systems (p > 0.05). X1 Blue was faster than the manual group (p < 0.05). Only manual group improved the filling material removal after the repreparation stage (p < 0.05). Both activation protocols significantly improved the filling material removal (p < 0.05), without differences between them (p > 0.05). Conclusions None of the tested instruments completely removed the filling material. X1 Blue size 25.06 reached the working length in the shortest time. XP Clean and Flatsonic improved the filling material removal.
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Affiliation(s)
- Lilian Tietz
- Department of Conservative Dentistry, Federal University of Rio Grande do Sul - UFRGS, Porto Alegre, Brazil
| | - Renan Diego Furlan
- Department of Operative Dentistry, Endodontics and Dental Materials, Bauru School of Dentistry/University of São Paulo - FOB/USP, Bauru, Brazil
| | - Ricardo Abreu da Rosa
- Department of Conservative Dentistry, Federal University of Rio Grande do Sul - UFRGS, Porto Alegre, Brazil
| | - Marco Antonio Hungaro Duarte
- Department of Operative Dentistry, Endodontics and Dental Materials, Bauru School of Dentistry/University of São Paulo - FOB/USP, Bauru, Brazil
| | | | - Rodrigo Ricci Vivan
- Department of Operative Dentistry, Endodontics and Dental Materials, Bauru School of Dentistry/University of São Paulo - FOB/USP, Bauru, Brazil
| | - Theodoro Weissheimer
- Department of Conservative Dentistry, Federal University of Rio Grande do Sul - UFRGS, Porto Alegre, Brazil
| | - Marcus Vinicius Reis Só
- Department of Conservative Dentistry, Federal University of Rio Grande do Sul - UFRGS, Porto Alegre, Brazil
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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: 5] [Impact Index Per Article: 1.7] [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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Baranwal HC, Mittal N, Garg R, Yadav J, Rani P. Comparative evaluation of retreatability of bioceramic sealer (BioRoot RCS) and epoxy resin (AH Plus) sealer with two different retreatment files: An in vitro study. J Conserv Dent 2021; 24:88-93. [PMID: 34475687 PMCID: PMC8378486 DOI: 10.4103/jcd.jcd_657_20] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2020] [Revised: 01/28/2021] [Accepted: 01/31/2021] [Indexed: 11/26/2022] Open
Abstract
Aim: The aim of the study was to evaluate and compare the retreatability of BioRoot RCS and AH Plus sealer with two different retreatment file systems using cone-beam computed tomography (CBCT) for assessing the filling remnants. Materials and Methods: A total of sixty mandibular premolars with single and oval root canals were prepared till size F3 and obturated with GP/AH Plus (Group 1) and GP/BioRoot RCS (Group 2). Canals were then retreated using two different retreatment file systems – ProTaper Universal Retreatment (PTUR) system and NeoEndo Retreatment system. The ability to re-establish working length (WL) and apical patency was recorded, and the percentage volume of residual filling material was evaluated using CBCT at the coronal, middle, and apical thirds. Data from the study were analyzed using one-way analysis of variance with Pearson's Chi-squared analysis and the Kruskal–Wallis test. Results: No statistically significant difference was found in the amount of residual sealer (AH Plus and BioRoot RCS) after retreatment throughout the whole study (P > 0.05) at various root canal levels. Furthermore, the BioRoot RCS group retreated with the PTUR system showed a higher frequency of failure in re-establishing WL and regaining apical patency than the other groups. Conclusion: Complete removal of root canal sealers could not be achieved regardless of the type of sealer used and the retreatment technique employed. Furthermore, in clinical settings, the retreatability of novel BioRoot RCS may be deemed feasible.
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Affiliation(s)
- Harakh Chand Baranwal
- Department of Conservative Dentistry and Endodontics, Faculty of Dental Sciences, IMS, Banaras Hindu University, Varanasi, Uttar Pradesh, India
| | - Neelam Mittal
- Department of Conservative Dentistry and Endodontics, Faculty of Dental Sciences, IMS, Banaras Hindu University, Varanasi, Uttar Pradesh, India
| | - Riya Garg
- Department of Conservative Dentistry and Endodontics, Faculty of Dental Sciences, IMS, Banaras Hindu University, Varanasi, Uttar Pradesh, India
| | - Jyoti Yadav
- Department of Conservative Dentistry and Endodontics, Faculty of Dental Sciences, IMS, Banaras Hindu University, Varanasi, Uttar Pradesh, India
| | - Prachi Rani
- Department of Conservative Dentistry and Endodontics, Faculty of Dental Sciences, IMS, Banaras Hindu University, Varanasi, Uttar Pradesh, India
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Dhaimy S, Kim HC, Bedida L, Benkiran I. Efficacy of reciprocating and rotary retreatment nickel-titanium file systems for removing filling materials with a complementary cleaning method in oval canals. Restor Dent Endod 2021; 46:e13. [PMID: 33680902 PMCID: PMC7906846 DOI: 10.5395/rde.2021.46.e13] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2020] [Revised: 08/08/2020] [Accepted: 09/13/2020] [Indexed: 01/16/2023] Open
Abstract
Objectives This study aimed to evaluate and compare the efficacy of the S1 reciprocating system and the D-Race retreatment rotary system for filling material removal and the apical extrusion of debris. Materials and Methods Sixty-four freshly extracted maxillary canines were shaped with size 10 and size 15 K-files, instrumented using ProTaper Gold under irrigation with 2.5% sodium hypochlorite (NaOCl), obturated according to the principle of thermo-mechanical condensation with gutta-percha and zinc oxide eugenol sealer, and allowed to set for 3 weeks at 37°C. Subsequently, the teeth were divided into a control group (n = 4), the D-Race rotary instrument group (n = 30), and the S1 reciprocating instrument group (n = 30). After classical retreatment, the canals were subjected to a complementary approach with the XP-Endo Shaper. Desocclusol was used as a solvent, and irrigation with 2.5% NaOCl was performed. Each group was divided into subgroups according to the timing of radiographic readings. The images were imported into a software program to measure the remaining filling material, the apical extrusion, and the root canal space. The data were statistically analyzed using the Z-test and JASP graphics software. Results No significant differences were found between the D-Race and S1 groups for primary retreatment; however, using a complementary cleaning method increased the removal of remnant filling (p < 0.05). Conclusions Classical removal of canal filling material may not be sufficient for root canal disinfection, although a complementary finishing approach improved the results. Nevertheless, all systems left some debris and caused apical extrusion.
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Affiliation(s)
- Said Dhaimy
- Department of Conservative Dentistry and Endodontics, School of Dentistry, Hassan II University, Casablanca, Morocco
| | - Hyeon-Cheol Kim
- Department of Conservative Dentistry, Dental Research Institute, School of Dentistry, Pusan National University, Yangsan, Korea
| | - Lamyae Bedida
- Department of Conservative Dentistry and Endodontics, School of Dentistry, Hassan II University, Casablanca, Morocco
| | - Imane Benkiran
- Department of Conservative Dentistry and Endodontics, School of Dentistry, Hassan II University, Casablanca, Morocco
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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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Azevedo MAD, Silva TGD, Fernandes Â, Piasecki L, Fariniuk LF, Silva Neto UXD. Endodontic Retreatment Using a Single Instrument from four Nickel-Titanium Systems - A Micro-CT Study. Braz Dent J 2020; 31:605-610. [DOI: 10.1590/0103-6440202003463] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2020] [Accepted: 07/01/2020] [Indexed: 01/15/2023] Open
Abstract
Abstract This study evaluated the efficiency of using a single instrument from three different rotary multi-file systems and compared them with that of a reciprocating single-file for endodontic retreatment by means of micro-CT. Sixty extracted canines were prepared using a size F2 ProTaper Universal file and obturated. After 30 days of storage at 37ºC and 100% humidity, the teeth were randomly divided into four groups (n=15) based on the type of instrument used to retreatment: ProTaper Next (PTN), ProTaper Gold (PTG), TRUShape 3D (TS), and WaveOne (WO). The canals were retreated using only the size 40 instrument from each system according to the manufacturer’s recommendations for torque and speed. The time required to remove the filling material was recorded in seconds. The amount of initial and residual filling material and the quantity of dentin removed were assessed by means of micro-CT. Data were statistically analyzed (ANOVA and Kruskal-Wallis) at a 5% significance level. TS instruments required the highest (p<0.05) amount of time (mean, 384.80 ±144.92) compared with the WO (229.67±68.16) and PTG (248.67±64.22) and not so different from PTN instruments (327.67±133.3). No differences in the amount of dentin removed, initial and residual filling volume, and percentages of filling material were observed among the groups. The use of a single rotary instrument from the PTG, TS, and PTN systems was as effective as that of the single-file reciprocating WO system. However, none of the instruments was able to remove the filling materials completely.
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Volponi A, Pelegrine RA, Kato AS, Stringheta CP, Lopes RT, Silva ASDS, Bueno CEDS. Micro-computed Tomographic Assessment of Supplementary Cleaning Techniques for Removing Bioceramic Sealer and Gutta-percha in Oval Canals. J Endod 2020; 46:1901-1906. [PMID: 32961214 DOI: 10.1016/j.joen.2020.09.010] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2020] [Revised: 08/25/2020] [Accepted: 09/14/2020] [Indexed: 01/18/2023]
Abstract
INTRODUCTION The aim of this study was to conduct a micro-computed tomographic assessment of the effectiveness of 3 supplementary cleaning techniques in reducing the residual volume of gutta-percha and a bioceramic sealer after performing endodontic retreatment procedures in teeth with oval canals. METHODS Thirty-six mandibular premolars were instrumented with the ProTaper Next system (instruments X1-X3; Dentsply Maillefer, Ballaigues, Switzerland) and filled with gutta-percha and Bio-C Sealer (Angelus, Londrina, PR, Brazil) using the single-cone technique. The teeth were reinstrumented with the Reciproc R40 instrument (VDW, Munich, Germany) and divided into 3 groups according to the supplementary cleaning technique used (n = 12): ultrasonic-assisted irrigation (UAI), EndoActivator (Dentsply Tulsa Dental Specialties, Tulsa, OK) irrigation (EAI), or the XP-endo Finisher R system (XPR; FKG Dentaire, La Chaux-de-Fonds, Switzerland). Micro-computed tomographic imaging was used to quantify the residual volume of filling material. One-way analysis of variance complemented by the Tukey test was used to perform the statistical analysis (P < .05). RESULTS Significant reductions were obtained in the residual filling material after supplementary cleaning (P < .05). XPR (47.5%) led to significantly greater (P < .05) filling material removal than UAI (16.6%) or EAI (22.6%). The removal values of the 2 latter systems were not significantly different. CONCLUSIONS XPR was more effective than UAI and EAI in removing filling material in mandibular premolars with oval canals. None of the tested supplementary cleaning techniques completely removed the residual filling material.
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Affiliation(s)
- Andrea Volponi
- Faculdade São Leopoldo Mandic, Instituto de Pesquisa São Leopoldo Mandic, Endodontia, Campinas, São Paulo, Brazil
| | - Rina Andréa Pelegrine
- Faculdade São Leopoldo Mandic, Instituto de Pesquisa São Leopoldo Mandic, Endodontia, Campinas, São Paulo, Brazil
| | - Augusto Shoji Kato
- Faculdade São Leopoldo Mandic, Instituto de Pesquisa São Leopoldo Mandic, Endodontia, Campinas, São Paulo, Brazil
| | - Carolina Pessoa Stringheta
- Faculdade São Leopoldo Mandic, Instituto de Pesquisa São Leopoldo Mandic, Endodontia, Campinas, São Paulo, Brazil
| | - Ricardo Tadeu Lopes
- Laboratory of Nuclear Instrumentation, Alberto Luiz Coimbra Institute for Graduate Studies and Research in Engineering, Federal University of Rio de Janeiro, Rio de Janeiro, Rio de Janeiro, Brazil
| | - Aline Saddock de Sá Silva
- Laboratory of Nuclear Instrumentation, Alberto Luiz Coimbra Institute for Graduate Studies and Research in Engineering, Federal University of Rio de Janeiro, Rio de Janeiro, Rio de Janeiro, Brazil
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Comparison of Obturation Removal Efficiency from Straight Root Canals with ProTaper Gold or Reciproc Blue: A Micro-Computed Tomography Study. J Clin Med 2020; 9:jcm9041164. [PMID: 32325751 PMCID: PMC7230688 DOI: 10.3390/jcm9041164] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2020] [Revised: 04/10/2020] [Accepted: 04/15/2020] [Indexed: 11/29/2022] Open
Abstract
Background: The objective was to evaluate the efficiency of ProTaper Gold (PTG) and Reciproc Blue (RB) NiTi files in obturation material removal from straight root canals assessed by micro-computed tomography. Methods: Fifty-two anterior human teeth were shaped with a PTG rotary system until F2 (25/.08). Specimens were obturated with a continuous wave of condensation technique. For retreatment, specimens were randomly distributed in two experimental groups: PTG group (F4 file) and RB (R40 file). Micro-CT scans were performed before and after retreatment procedures. The percentage of the remaining obturation material compared to the original volume was calculated, as well as the retreatment time. The presence of separated files was recorded. A descriptive analysis was carried out, and nonparametric tests were employed. Results: The mean percentages of remaining obturation material in the PTG group and the RB group were 4.14 ± 4.30% and 4.18 ± 4.29%, respectively. The mean retreatment times for the PTG and RB groups were 144 ± 51 and 163 ± 88 s, respectively. There were no statistically significant differences, neither in removal efficiency (p > 0.05) nor in retreatment time (p > 0.05), between the two groups. The coronal and middle thirds presented significantly more remaining obturation material than the apical third (p < 0.05). No file separation occurred. Conclusions: ProTaper Gold and Reciproc Blue present with comparable efficiency in removing the obturation material, with a similar mean retreatment time.
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Bago I, Plotino G, Katić M, Ročan M, Batinić M, Anić I. Evaluation of filling material remnants after basic preparation, apical enlargement and final irrigation in retreatment of severely curved root canals in extracted teeth. Int Endod J 2020; 53:962-973. [PMID: 32159859 DOI: 10.1111/iej.13287] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2019] [Accepted: 03/09/2020] [Indexed: 12/16/2022]
Affiliation(s)
- I. Bago
- Department of Endodontics and Restorative Dentistry School of Dental Medicine University of Zagreb Zagreb Croatia
| | - G. Plotino
- Grande Plotino & Torsello – Studio di Odontoiatria Private Practice Rome Italy
| | - M. Katić
- Department of Materials Faculty of Mechanical Engineering and Naval Architecture University of Zagreb Zagreb Croatia
| | - M. Ročan
- School of Dental Medicine University of Zagreb Zagreb Croatia
| | - M. Batinić
- School of Dental Medicine University of Zagreb Zagreb Croatia
| | - I. Anić
- Department of Endodontics and Restorative Dentistry School of Dental Medicine University of Zagreb Zagreb Croatia
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Micro–computed Tomographic Assessment of the Residual Filling Volume, Apical Transportation, and Crack Formation after Retreatment with Reciproc and Reciproc Blue Systems in Curved Root Canals. J Endod 2020; 46:238-243. [DOI: 10.1016/j.joen.2019.11.003] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2019] [Revised: 11/04/2019] [Accepted: 11/08/2019] [Indexed: 12/19/2022]
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Arruda EDS, Sponchiado-Júnior EC, Pandolfo MT, Fredson MADC, Roberi Garcia LDF, Marques AAF. Apical Transportation and Centering Ability After Root Canal Filling Removal Using Reciprocating and Continuous Rotary Systems: A CBCT Study. Eur J Dent 2019; 13:613-618. [PMID: 31891978 PMCID: PMC6938415 DOI: 10.1055/s-0039-3399407] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022] Open
Abstract
OBJECTIVE To evaluate the apical transportation and centering ability promoted by reciprocating and continuous rotary systems after root canal filling removal. MATERIALS AND METHODS After obturation, 40 mesial root canals of mandibular molars were distributed into four groups (n = 20) for filling material removal: PTU group-F2 instrument (25.08) of ProTaper Universal system; R25 group-R25 instrument (25.08) of Reciproc system; X2 group-X2 instrument (25.06) of ProTaper Next system and X3 group-X2 instrument (25.06) of ProTaper Next system, followed by X3 instrument (30.07). Cone-beam computed tomographic analysis was performed before and after filling material removal for acquisition of apical images. Apical transportation (AT) and its direction, and centering ability (CA), were assessed using the equations AT = (X1-X2)-(Y1-Y2) and CA = (X1-X2/Y1-Y2 or Y1-Y2/X1-X2), respectively. Data were submitted to the nonparametric Kruskal-Wallis and Dunn multiple comparison tests (p < 0.05) for statistical analysis. RESULTS There was no statistically significant difference among groups for AT (p > 0.05), with a tendency toward transportation in the distal direction. Also, there was no statistically significant difference among groups regarding CA (p > 0.05). CONCLUSIONS The different systems, including ProTaper Next, caused AT within the acceptable clinical limit after filling removal. In addition, none of the tested systems presented adequate CA.
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Affiliation(s)
| | | | - Mariana Travi Pandolfo
- Department of Dentistry, Endodontics Division, Health Sciences Center, Federal University of Santa Catarina, Florianópolis, Santa Catarina, Brazil
| | | | - Lucas da Fonseca Roberi Garcia
- Department of Dentistry, Endodontics Division, Health Sciences Center, Federal University of Santa Catarina, Florianópolis, Santa Catarina, Brazil
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Balseca MJB, Ayala SBT, da Costa Aznar FD, de Freitas-Aznar AR, Balseca GMA, S. Freitas KM. In vitro Comparison of Apically Extruded Debris during Root Canal Retreatment with Rotary and Reciprocating Systems. Open Dent J 2019. [DOI: 10.2174/1874210601913010488] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
Introduction:
The extrusion of apical detritus during the retracting procedure is very important, as, besides eliminating materials of radicular obturation, aggressive agents and products such as the remains of dentin taken out, and microorganisms are generally located in tissue around the roots, producing undesired effects, such as inflammation, acute pain, post-operatory pain and delays in the periapical treatment.
Objective:
To determine the amount of apically extruded detritus using rotary and reciprocating retreatment systems.
Methodology:
An experimental comparative study as conducted in which 40 single-rooted human first premolars were analyzed. The instruments used were ProTaper Universal files up to F3 and sodium hypochlorite, and the sealing was made through the hybrid technique Tager. They were then kept at 37ºC and 100% of humidity for 15 days so that the sealing material would seal. For the retracting procedure, experimental tubes previously weighted were used. The sample was divided randomly into two groups of 20 pieces. Group A: ProTaper R, and group B: Reciproc. Then, the irrigating material (distilled water) was evaporated from the tubes for 12 hours in a stove at 105ºC, and the experimental tubes were weighted in an analytical precision weighing scale 10-5g. The data was analyzed through the T Student with a significance level of 5%.
Results:
Results indicated that groups A and B, retreatment with rotational ProTaper R and reciprocating retreatment system (Reciproc) showed a similar difference of initial and final weights, indicating similar apical extrusion of detritus.
Conclusion:
Both systems extruded a similar amount of detritus during the retreatment procedures.
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Sadat Shojaee N, Vakilinezhad E, Shokouhi MM. In Vitro Comparison of Efficacy of Neolix and ProTaper Universal Retreatment Rotary Systems in Removal of Gutta-Percha Combined with Two Different Sealers. JOURNAL OF DENTISTRY (SHIRAZ, IRAN) 2019. [PMID: 31875176 DOI: 10.30476/dentjods.2019.77825.] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
Statement of the Problem The complete removal of filling material is an important step to regain access to the entire canal and facilitate the disinfection of the root canal system. Rotary nickel-titanium (NiTi) instruments systems have been proposed as an effective removal technique for root canal retreatment. Purpose The aim of this study was to evaluate the efficacy of Neolix rotary system and ProTaper Universal retreatment system in the removal of gutta-percha combined with two different sealers. Materials and Method In vivo study, eighty extracted human permanent mandibular premolars were prepared using the ProTaper Universal rotary system to an apical size 30 (F3/0.06). The specimens were randomly divided into 4 groups (n=20) and subsequently filled with lateral condensation of gutta-percha and two sealers: AH-26 and Sure-Seal Root. The teeth were stored for 4 weeks at 37°C and 100% humidity and then retreated by one of the following rotary systems: Neolix or ProTaper Universal retreatment system. Teeth were then grooved and monitored under a stereomicroscope with 8× magnification. The images were transferred to the computer and the amount of filling material that remained on the root canal walls was scored using AutoCAD 2017 version 1.1software. Results were analyzed using one-way analysis of variance test and post hoc Tukey-HSD test (p< 0.05). Results The mean percentage of remaining gutta-percha and sealer was significantly higher in apical third in all groups (p< 0.01). Post hoc Tukey test showed that there is significantly higher residual filling material in the group filled with gutta-percha and Sure-Seal Root sealer and retreated by Neoniti rotary system compared with other groups in both coronal and middle third of the canal. Conclusion The Neoniti rotary system was as effective as ProTaper Universal retreatment system in retreatment of gutta-percha and AH-26 sealer but was significantly less effective in groups obturated with Sure-Seal Root sealer.
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Affiliation(s)
- Nooshin Sadat Shojaee
- Dept. of Endodontics, School of Dentistry, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Ehsan Vakilinezhad
- Undergraduate Student, School of Dentistry, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Mohammad Mehdi Shokouhi
- Dept. of Endodontics, School of Dentistry, Shiraz University of Medical Sciences, Shiraz, Iran
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Özyürek T, Demiryürek EÖ. Surface deformation of several nickel-titanium rotary instruments after removal of the root canal filling materials: a scanning electron microscope evaluation. Odontology 2019; 108:213-221. [PMID: 31531770 DOI: 10.1007/s10266-019-00454-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2019] [Accepted: 08/27/2019] [Indexed: 10/26/2022]
Abstract
The aim of the present study was to investigate and compare the surface deformations of different NiTi rotary files after retreatment under scanning electron microscope (SEM). A total of 240 upper central incisor teeth were obturated with vertical compaction technique and divided into 6 groups. Root canals were retreated by ProTaper Next (PTN), Twisted File Adaptive (TFA), Reciproc (RPC), ProTaper Universal Retreatment (PTR), R-Endo and Mtwo-R NiTi rotary systems. The files investigated under SEM at different magnifications and photomicrographs were captured. The photomicrographs were classified and scored. Kruskal-Wallis and Dunn tests were performed for statistical analyze at 5% significance level. PTR and RPC groups were free of defects like file separation, curving and unwinding but PTN and TFA groups showed 50% file separation. According to the photomicrographs that were captured at high magnification; there were no statistically difference between groups at the coronal thirds of the files (P > 0.05), at the middle third PTN and TFA groups showed statistically more deformation than the other groups (P < 0.05). At the apical third Reciproc was statistically showed less deformation than the other all groups (P < 0.05). Within the limitation of this in vitro study, all NiTi files showed surface deformation in SEM observation after retreatment procedures. There was less deformation in PTR and RPC groups according to other.
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Affiliation(s)
- Taha Özyürek
- Department of Endodontics, Istanbul Medeniyet University, Faculty of Dentistry, Fatih Mahallesi, Eski Ankara Asfalti, 34956, Tuzla, Istanbul, Turkey.
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Dönmez Özkan H, Kaval ME, Özkan G, Yiğit Özer S. Efficacy of Two Different Nickel-Titanium Rotary Systems in Retreatment Procedure With or Without Laser-Activated Irrigation: An In Vitro Study. Photobiomodul Photomed Laser Surg 2019; 37:495-499. [PMID: 31211638 DOI: 10.1089/photob.2019.4637] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Objective: The aim of this study was to compare the efficacy of HyFlex EDM (Coltene/Whaledent, Altstätten, Switzerland) and ProTaper Universal Retreatment Nickel-Titanium (NiTi) Systems [The ProTaper Universal Retreatment (PTR), Dentsply Maillefer, Ballaigues, Switzerland] in the removal of the root canal filling materials with or without laser activated irrigation. Materials and methods: The root canals of 60 human mandibular premolars were instrumented with K files up to size 35 at a working length; the step-back procedure was performed in 1 mm increments up to size 50. Next, the teeth were obturated using the lateral compaction technique with gutta-percha and resin-based sealer, and they were randomly divided into two groups (n = 30) according to the retreatment systems: PTR and HyFlex EDM NiTi rotary files. Then, each group was divided into two subgroups (n = 15), laser [photon-induced photo-acoustic streaming (PIPS); Fotona, Ljubljana, Slovenia] activated irrigation and conventional needle irrigation group. Following these procedures, the specimens were evaluated using micro-computed tomography. Results: There was no significant difference between the instrumentation systems regarding the cleaning efficacy (χ2 = 0.754; p = 0.86). Additionally, PIPS method did not have a significant effect on the removal of the filling material compared to conventional needle irrigation. Conclusions: Both instrumentation systems were effective in removing the filling material, but neither was able to remove the filling material completely. PIPS method did not show a significant additional effect regarding the removal of filling material.
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Affiliation(s)
- Hicran Dönmez Özkan
- 1Department of Endodontics, Faculty of Dentistry, Adnan Menderes University, Aydin, Turkey
| | - Mehmet Emin Kaval
- 2Department of Endodontics, Faculty of Dentistry, Ege University, İzmir, Turkey
| | - Gökhan Özkan
- 3Department of Oral and Maxillofacial Radiology, Faculty of Dentistry, Adnan Menderes University, Aydin, Turkey
| | - Senem Yiğit Özer
- 1Department of Endodontics, Faculty of Dentistry, Adnan Menderes University, Aydin, Turkey
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Kaloustian MK, Nehme W, El Hachem C, Zogheib C, Ghosn N, Mallet JP, Diemer F, Naaman A. Evaluation of two shaping systems and two sonic irrigation devices in removing root canal filling material from distal roots of mandibular molars assessed by micro CT. Int Endod J 2019; 52:1635-1644. [PMID: 31127955 DOI: 10.1111/iej.13163] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2019] [Accepted: 05/22/2019] [Indexed: 01/11/2023]
Abstract
AIM To compare two preparation systems and two sonic irrigation devices during the removal of root filling material from oval distal canals of extracted mandibular molars. METHODOLOGY The distal canals in 40 extracted mandibular molars were shaped using the ProTaper Next system (Dentslpy Sirona, Ballaigues, Switzerland), filled with Gutta Percha X2 (Dentsply Sirona), along with AH Plus sealer (Dentsply De Trey, Konstanz, Germany) and randomly divided into two groups (n = 20) according to volume of initial filling, preparation diameter and working length. One group was retreated using the Reciproc system (VDW, Munich, Germany), and the other using the 2Shape system (Micro-Mega, Besançon, France). A micro-CT scan was taken after the initial root filling and after retreatment to evaluate the volume of filling material remnants. The teeth were divided into four groups to test the supplementary effect of two sonic irrigation devices on removing filling material: Eddy (VDW) and MM1500 (Micro-Mega). In the first and second groups, 2Shape was followed subsequently by MM1500 and Eddy; in the third and fourth groups, Reciproc was followed by MM1500 and Eddy. A third micro-CT was taken to compare the remaining root filling material in all groups. Wilcoxon's signed rank tests, Mann-Whitney and Kruskal-Wallis tests were used for statistical analysis. RESULTS No significant difference was found for the volume of filling material removed between the Reciproc and 2Shape in the entire canal (P = 0.355). The volume dropped significantly from its initial value after removing the bulk of the root filling by 95.8% (from 4.71 to 0.22 mm3 ) with the 2Shape (P < 0.001) and by 94.0% (from 5.05 to 0.33 mm3 ) with the Reciproc (P < 0.001). Sonic activation significantly decreased the residual volume of filling material remnants by 3.21% (P = 0.013) in the first group, 1.38% (P = 0.012) in the second group, 1.83% (P = 0.008) in the third group and 1.83% (P = 0.012) in the fourth group. At the end, the percentage of residual material was not significantly different among the groups in the entire canal (P = 0.163). CONCLUSION In the distal oval canals of extracted mandibular molar teeth, there was no significant difference between the 2Shape and Reciproc systems in removing gutta-percha/sealer. Sonic activation with MM1500 and Eddy significantly improved filling material removal.
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Affiliation(s)
- M K Kaloustian
- Department of Endodontics, Faculty of Dentistry, Saint Joseph University, Beirut, Lebanon
| | - W Nehme
- Department of Endodontics, Faculty of Dentistry, Saint Joseph University, Beirut, Lebanon
| | - C El Hachem
- Department of Pediatric Dentistry, Faculty of Dentistry, Saint Joseph University, Beirut, Lebanon
| | - C Zogheib
- Department of Endodontics, Faculty of Dentistry, Saint Joseph University, Beirut, Lebanon
| | - N Ghosn
- Department of Oral and Maxillofacial Radiology, Faculty of Dentistry, Saint Joseph University, Beirut, Lebanon
| | - J P Mallet
- Faculté de Chirurgie Dentaire, CHU de Toulouse - Institut Clément Ader (laboratoire), Toulouse, France
| | - F Diemer
- Faculté de Chirurgie Dentaire, CHU de Toulouse - Institut Clément Ader (laboratoire), Toulouse, France
| | - A Naaman
- Department of Endodontics, Faculty of Dentistry, Saint Joseph University, Beirut, Lebanon
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Aksel H, Küçükkaya Eren S, Askerbeyli Örs S, Serper A, Ocak M, Çelik HH. Micro‐CT evaluation of the removal of root fillings using the ProTaper Universal Retreatment system supplemented by the XP‐Endo Finisher file. Int Endod J 2019; 52:1070-1076. [DOI: 10.1111/iej.13094] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2018] [Accepted: 01/31/2019] [Indexed: 01/11/2023]
Affiliation(s)
- H. Aksel
- Department of Endodontics Faculty of Dentistry Hacettepe University Ankara Turkey
- Department of Periodontics and Endodontics School of Dental Medicine University at Buffalo Buffalo NY USA
| | - S. Küçükkaya Eren
- Department of Endodontics Faculty of Dentistry Hacettepe University Ankara Turkey
| | - S. Askerbeyli Örs
- Department of Endodontics Faculty of Dentistry Hacettepe University Ankara Turkey
| | - A. Serper
- Department of Endodontics Faculty of Dentistry Hacettepe University Ankara Turkey
| | - M. Ocak
- Department of Anatomy Faculty of Dentistry Ankara University Ankara Turkey
| | - H. H. Çelik
- Department of Anatomy Faculty of Medicine Hacettepe University Ankara Turkey
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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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Kaloustian MK, Nehme W, El Hachem C, Zogheib C, Ghosn N, Michetti J, Naaman A, Diemer F. Evaluation of Two Shaping Systems and Two Ultrasonic Irrigation Devices in Removing Root Canal Filling Material from Mesial Roots of Mandibular Molars: A Micro CT Study. Dent J (Basel) 2019; 7:dj7010002. [PMID: 30609716 PMCID: PMC6473683 DOI: 10.3390/dj7010002] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2018] [Revised: 12/11/2018] [Accepted: 12/14/2018] [Indexed: 01/21/2023] Open
Abstract
We assessed the efficiency of two shaping file systems and two passive ultrasonic irrigation (PUI) devices for removing filling material during retreatment. The mesial canals from 44 extracted mandibular molars were prepared and obturated. The teeth were randomly divided into two groups, and then one group was retreated with Reciproc R25 (VDW, Munich, Germany) (n = 44) and the other group was retreated with 2Shape (TS, Micro Mega, Besançon, France) (n = 44). A micro-computed tomography (CT) scan was taken before and after the retreatment to assess the volume of the filling material remnants. The teeth were then randomly divided into four groups to test two different PUI devices: Irrisafe (Satelec Acteon Group, Merignac, France) and Endo Ultra (Vista Dental Products, Racine, WI, USA). The teeth in Group A were retreated with 2Shape to test the Endo Ultra (n = 22) device, the teeth in Group B were retreated with 2Shape in order to test the Irrisafe (n = 22) device, the teeth in Group C were retreated with Reciproc to test the Endo Ultra (n = 22) device, and Group D was retreated with Reciproc to test the Irrisafe (n = 22) device. A third micro-CT scan was taken after the retreatment to test the PUIs. The percentage of Gutta-Percha (GP) and sealer removed was 94.75% for TS2 (p < 0.001) and 89.3% for R25 (p < 0.001). The PUI significantly enhanced the removal of the filling material by 0.76% for Group A (p < 0.001), 1.47% for Group B (p < 0.001), 2.61% for Group C (p < 0.001), and by 1.66% for Group D (p < 0.001). 2Shape was more effective at removing the GP and sealer during retreatment (p = 0.018). The supplementary approach with PUI significantly improved filling material removal, with no statistical difference between the four groups (p = 0.106).
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Affiliation(s)
- Marc Krikor Kaloustian
- Department of Endodontics, Faculty of Dentistry, Saint Joseph University, Beirut Po 11 5070, Lebanon.
| | - Walid Nehme
- Department of Endodontics, Faculty of Dentistry, Saint Joseph University, Beirut Po 11 5070, Lebanon.
| | - Claire El Hachem
- Department of Pediatric Dentistry, Faculty of Dentistry, Saint Joseph University, Beirut Po 11 5070, Lebanon.
| | - Carla Zogheib
- Department of Endodontics, Faculty of Dentistry, Saint Joseph University, Beirut Po 11 5070, Lebanon.
| | - Nabil Ghosn
- Department of Oral and Maxilla-Facial Radiology, Faculty of Dentistry, Saint Joseph University, Beirut Po 11 5070, Lebanon.
| | - Jérôme Michetti
- Institut de Recherche en Informatique de Toulouse, IRIT, CNRS UMR 5505, 118 Route de Narbonne, 31062 Toulouse CEDEX 9, France.
| | - Alfred Naaman
- Department of Endodontics, Faculty of Dentistry, Saint Joseph University, Beirut Po 11 5070, Lebanon.
| | - Franck Diemer
- Faculté de Chirurgie Dentaire CHU de Toulouse, Institut Clement Ader (labo), 118 Route de Narbonne, 31062 Toulouse CEDEX 9, France.
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Coelho MS, Lacerda MFLS, Silva MHC, Rios MDA. Locating the second mesiobuccal canal in maxillary molars: challenges and solutions. Clin Cosmet Investig Dent 2018; 10:195-202. [PMID: 30288125 PMCID: PMC6159800 DOI: 10.2147/ccide.s154641] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023] Open
Abstract
The second mesiobuccal canal in mesiobuccal roots in maxillary molars is a common finding in root canal treatments. Failure on the location of these canals is associated with a high rate of unsuccessful treatments of maxillary molars. Its prevalence has been assessed in several in vitro and in vivo studies, presenting variations according to the methodology applied, along with the population of interest. While the anatomy of these teeth is well defined in micro-computed tomography studies, the clinical management is a great challenge for the practitioner. The use of a dental operating microscope has rendered a better clinical outcome when considering the location and treatment of this canal. On the other hand, cone-beam computed tomography use is still controversial in the efficacy of MB2 canal location. The association of a dental operating microscope with troughing performed with ultrasonic tips is an essential step in this location. Moreover, sodium fluorescein might be applied for root canal location. Due to the high rate of unsuccessful cases when the MB2 canal is not initially found, several cases are performed aiming to address the cases of missed MB2 canals. Therefore, the clinician should discuss the best possible approach, whether surgical or clinical. This article presents an overview of the importance of the MB2 canal on the outcomes of root canal treatments of maxillary molars. Solutions based in current literature will be presented accordingly.
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Delai D, Jardine AP, Mestieri LB, Boijink D, Fontanella VRC, Grecca FS, Kopper PMP. Efficacy of a thermally treated single file compared with rotary systems in endodontic retreatment of curved canals: a micro-CT study. Clin Oral Investig 2018; 23:1837-1844. [PMID: 30215147 DOI: 10.1007/s00784-018-2624-6] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2018] [Accepted: 09/06/2018] [Indexed: 11/24/2022]
Abstract
OBJECTIVES This study aimed to compare WaveOne Gold with ProTaper and RaCe systems regarding remaining filling material, apical transportation (AT), and working time (WT) after (i) filling removal and (ii) shaping of curved canals. METHODS Thirty mesiobuccal canals of maxillary molars were prepared and filled. After 30 days, they were randomly assigned into three groups (n = 10), according to the instruments used for filling removal and shaping, respectively: WOG-WaveOne Gold Primary and Medium; PTG-ProTaper Retreatment and ProTaper Next; RCG-D-RaCe and RaCe. Micro-CT analysis assessed the residual filling material and AT. WT was recorded. Data were statistically analyzed (α = .05). RESULTS There was no significant difference between groups in the amount of filling material at any evaluated moment (P > .05). All groups presented low AT values. The WT was similar in all groups in filling removal (P > .05), and in shaping step WOG was faster than PTG and RCG (P < .05). CONCLUSIONS Neither system could completely remove the filling material. The instruments evaluated were safe and the reciprocating system was faster than the rotary systems in shaping the canals. CLINICAL RELEVANCE This study provided consistent information on filling material removal capacity of WaveOne Gold. Considering that all tested systems were safe, WaveOne Gold may be an alternative with cost-effectiveness and shorter learning curve for endodontic retreatment.
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Affiliation(s)
- Débora Delai
- Graduate Program of the School of Dentstry, Federal University of Rio Grande do Sul, Porto Alegre, RS, Brazil
| | | | - Letícia Boldrin Mestieri
- Graduate Program of the School of Dentstry, Federal University of Rio Grande do Sul, Porto Alegre, RS, Brazil
| | - Daiana Boijink
- Graduate Program of the School of Dentstry, Federal University of Rio Grande do Sul, Porto Alegre, RS, Brazil
| | - Vania Regina Camargo Fontanella
- Department of Orthopedics and Surgery of the School of Dentstry, Federal University of Rio Grande do Sul, Porto Alegre, RS, Brazil
| | - Fabiana Soares Grecca
- Graduate Program of the School of Dentstry, Federal University of Rio Grande do Sul, Porto Alegre, RS, Brazil
| | - Patrícia Maria Poli Kopper
- Graduate Program of the School of Dentstry, Federal University of Rio Grande do Sul, Porto Alegre, RS, Brazil.
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RIVERA-PEÑA ME, DUARTE MAH, ALCALDE MP, DE ANDRADE FB, VIVAN RR. A novel ultrasonic tip for removal of filling material in flattened/oval-shaped root canals: a microCT study. Braz Oral Res 2018; 32:e88. [DOI: 10.1590/1807-3107bor-2018.vol32.0088] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2018] [Accepted: 07/17/2018] [Indexed: 11/22/2022] Open
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Bago I, Suk M, Katić M, Gabrić D, Anić I. Comparison of the effectiveness of various rotary and reciprocating systems with different surface treatments to remove gutta-percha and an epoxy resin-based sealer from straight root canals. Int Endod J 2018; 52:105-113. [PMID: 29985524 DOI: 10.1111/iej.12985] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2018] [Accepted: 07/06/2018] [Indexed: 01/22/2023]
Abstract
AIM To compare the Reciproc Blue, Reciproc and ProTaper Universal Retreatment systems with regard to the effective removal of epoxy resin-based sealer and gutta-percha during the retreatment of oval, straight root canals. METHODOLOGY Forty-five extracted, human mandibular first premolars with single straight oval canals were selected on the basis of cone beam computed tomography evaluations. The root canals were instrumented with the ProTaper Next system up to the X2 file, and filled with gutta-percha and epoxy resin-based sealer using the cold lateral condensation technique. After 1 month, the samples were randomly divided into three groups (n = 15) according to the retreatment system used: Reciproc Blue R40, Reciproc R40 and ProTaper Universal. The specimens were scanned at the resolution of 1.2 μm by a microcomputed tomography device after the root filling and retreatment procedures, and the decrease in the volume of filling material after each retreatment protocol was measured. The results were analysed using the Kruskal-Wallis test and additional box-and-whisker plots. RESULTS Although the volume of the filling material decreased significantly in all three groups (P < 0.05), none of the systems removed the material completely. The Reciproc system removed significantly more material than the ProTaper Universal (P < 0.001) and Reciproc Blue (P = 0.005) systems, with the latter two exhibiting equal volumes of remaining material (P = 0.068). CONCLUSION The Reciproc system was more effective than the Reciproc Blue and ProTaper Universal Retreatment systems during the removal of filling material from oval, straight canals, although none of the systems completely removed the filling material.
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Affiliation(s)
- I Bago
- Department of Endodontics and Restorative Dentistry, School of Dental Medicine, Zagreb, Croatia
| | - M Suk
- Department of Endodontics and Restorative Dentistry, School of Dental Medicine, Zagreb, Croatia
| | - M Katić
- Department of Quality, Faculty of Mechanical Engineering and Naval Architecture, Zagreb, Croatia
| | - D Gabrić
- Department of Oral Surgery, School of Dental Medicine, University of Zagreb, Zagreb, Croatia
| | - I Anić
- Department of Endodontics and Restorative Dentistry, School of Dental Medicine, Zagreb, Croatia
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Madarati AA, Al-Nazzawi AA, Sammani AMN, Alkayyal MA. The efficacy of retreatment and new reciprocating systems in removing a gutta-percha-based filling material. J Taibah Univ Med Sci 2018; 13:452-458. [PMID: 31435361 PMCID: PMC6695048 DOI: 10.1016/j.jtumed.2018.03.011] [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: 01/22/2018] [Revised: 03/27/2018] [Accepted: 03/29/2018] [Indexed: 11/29/2022] Open
Abstract
Objectives To investigate the efficacy of retreatment and reciprocating rotary systems in removing gutta-percha filling material from root-canal systems. Methods A total of 90 single-canal human teeth were instrumented using a F3 ProTaper file and obturated with gutta-percha and the Tubliseal sealer using the lateral-compaction technique. They were divided into five groups according to the rotary system used to remove the filling material: Reciproc, which used the Reciproc-R25 file; WaveOne, which used the WaveOne-Primary file; S1, which used the S1 (25/.06) file; ProTaper-R, which used the ProTaper-Retreatment system; and Mtwo-R, which used the Mtwo®-Retreatment system. The time required to remove the filling material (min) and the associated instrument separation, if any, were recorded. Teeth were cleaved longitudinally and photographed with a high-resolution camera. Images were imported to the AutoCAD application to measure the remaining filling material and the root-canal space. Data were analysed using the one-way analysis of variance and Chi-squared tests. Results The Mtwo-R group showed the highest mean remaining filling material (51%) (p < 0.001), with no significant differences among the other groups. The ProTaper group required the least time for filling-material removal (4.95 min), with significant differences compared to the other groups (p < 0.05), except the WaveOne group (5.83 min; p = 1.000). Overall, 13 instruments (15.9%) were used for filling-material removal, with a significantly greater proportion in the Mtwo-R group (33.3%) compared to the other groups (p = 0.009). Conclusions Within the limitations of this in vitro study, reciprocating rotary systems were as effective as retreatment rotary systems in removing root-canal filling material. The Mtwo-R system showed the poorest performance with respect to removal effectiveness and instrument separation.
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Affiliation(s)
- Ahmad A Madarati
- Restorative Dental Sciences Department, College of Dentistry, Taibah University, Almadinah Almunawwarah, KSA
| | - Ahmad A Al-Nazzawi
- Substitutive Dental Sciences Department, College of Dentistry, Taibah University, Almadinah Almunawwarah, KSA
| | - Aya M N Sammani
- Substitutive Dental Sciences Department, College of Dentistry, Taibah University, Almadinah Almunawwarah, KSA
| | - Mahmod A Alkayyal
- College of Dentistry, Taibah University, Almadinah Almunawwarah, KSA
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keskin C, Sarıyılmaz E, Güler DH. Efficacy of novel thermomechanically treated reciprocating systems for gutta-percha removal from root canals obturated with warm vertical compaction. J Dent Res Dent Clin Dent Prospects 2018; 12:110-115. [PMID: 30087761 PMCID: PMC6076885 DOI: 10.15171/joddd.2018.017] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2017] [Accepted: 05/25/2018] [Indexed: 11/09/2022] Open
Abstract
Background. The present study aimed to test the efficacy of novel reciprocating systems in terms of gutta-percha removal of roots obturated with warm vertical compaction technique. Methods. Ninety straight rooted maxillary incisors were enlarged with hand files up to a # 50/02 apical size and obturated using warm vertical compaction technique. The specimens were divided into four groups according to system used for filling removal, as Reciproc Blue, Reciproc, WaveOne Gold and hand-instrumentation. The residual filling materials and time required for root canal removal were calculated. Statistical analyses were performed using one-way analysis of variance and Tukey tests with 5% significance threshold. Results. There were no significant differences among Reciproc, Reciproc Blue and WaveOne Gold (P > 0.05). Hand-instrumentation group left significantly greater root canal filling material (P < 0.05). The time required for root canal filling removal was significantly shorter in the Reciproc group followed by WaveOne Gold, Reciproc Blue and hand-instrumentation groups (P< 0.05). Conclusion. Efficacy of Reciproc Blue, WaveOne Gold and Reciproc instruments for root canal filling removal were similar and superior to hand-instrumentation.
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Affiliation(s)
- cangul keskin
- Department of Endodontics, OndokuzMayıs University Faculty of Dentistry, Samsun, Turkey
| | - Evren Sarıyılmaz
- Department of Endodontics, Ordu University Faculty of Dentistry, Ordu, Turkey
| | - Duygu Hazal Güler
- Department of Endodontics, OndokuzMayıs University Faculty of Dentistry, Samsun, Turkey
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Canali LCF, Duque JA, Vivan RR, Bramante CM, Só MVR, Duarte MAH. Comparison of efficiency of the retreatment procedure between Wave One Gold and Wave One systems by Micro-CT and confocal microscopy: an in vitro study. Clin Oral Investig 2018; 23:337-343. [PMID: 29675760 DOI: 10.1007/s00784-018-2441-y] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2017] [Accepted: 04/12/2018] [Indexed: 10/17/2022]
Abstract
INTRODUCTION To compare, by Micro-CT and confocal laser scanning microscopy (CLSM), the ability of the Wave One Gold and Wave One systems to remove filling material from mesial canals of mandibular molars, effective time spent; quantity of extruded material, and percentage of sealer in the dentinal tubules after retreatment and re-obturation procedures. MATERIALS AND METHODS Ten first mandibular molars (n = 20 mesial canals) were prepared and filled with gutta-percha and Endofill sealer mixed with Rhodamine B dye using the single cone technique. After 7 days, the canals were scanned using a high-definition micro-computer tomography with 19-mm voxel size and divided into two groups (n = 10) according to the system used in retreatment: group 1, Wave One (WO), and group 2, Wave One Gold (WG). After removing filling material with the primary file of each system, the WO 40/.08 and WG 35/.06 files were used. After using each file, a new scanning was performed and the residual filling material and extruded filling material were measured. The effective time spent to remove the canal filling was measured after each instrument. After retreatment, the teeth were re-obturated with gutta-percha and AH Plus sealer mixed with fluorescein dye using the single-cone technique. The roots were sectioned at 2, 4 and 6 mm and analysed by CLSM to measure the percentage of remaining sealer and the sealer of the new root canal filling. The data were statistically compared (P < 0.05). RESULTS Both systems presented a similar volume of filling material remaining in the canals after the use of the two instruments, similar residual and new material in the dentinal tubules, and similar extrusion of material (P > 0.05). When using WO 25, the operator spent significantly less effective time than when using WG 25 (P < 0.05); however, use of WG 35 and WO 40 required a similar time to remove filling material from the canals (P > 0.05). CONCLUSIONS Neither of the two systems removed all the filling material. The WG system presented similar ability in removing filling and extruded material in comparison with WO system. The effective time spent was shorter for WO 25 than for WG 25. CLINICAL RELEVANCE Wave One Gold can be an alternative to perform retreatment considering that in comparison with Wave One, there was no difference in filling material removal capacity and extruded materials. There was only difference in the effective time spent, in which the operator spent more time with WG 25 than with WO 25.
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Affiliation(s)
- Lyz Cristina Furquim Canali
- Department of Restorative Dentistry, Dental Materials and Endodontics, Bauru Dental School, University of São Paulo, Al. Octávio Pinheiro Brisola no. 9-75, Bauru, São Paulo, 17012-901, Brazil
| | - Jussaro Alves Duque
- Department of Restorative Dentistry, Dental Materials and Endodontics, Bauru Dental School, University of São Paulo, Al. Octávio Pinheiro Brisola no. 9-75, Bauru, São Paulo, 17012-901, Brazil.
| | - Rodrigo Ricci Vivan
- Department of Restorative Dentistry, Dental Materials and Endodontics, Bauru Dental School, University of São Paulo, Al. Octávio Pinheiro Brisola no. 9-75, Bauru, São Paulo, 17012-901, Brazil
| | - Clovis Monteiro Bramante
- Department of Restorative Dentistry, Dental Materials and Endodontics, Bauru Dental School, University of São Paulo, Al. Octávio Pinheiro Brisola no. 9-75, Bauru, São Paulo, 17012-901, Brazil
| | - Marcus Vinícius Reis Só
- Department of Endodontics, University Federal of Rio Grande do Sul, Porto Alegre, Rio Grande do Sul, Brazil
| | - Marco Antonio Hungaro Duarte
- Department of Restorative Dentistry, Dental Materials and Endodontics, Bauru Dental School, University of São Paulo, Al. Octávio Pinheiro Brisola no. 9-75, Bauru, São Paulo, 17012-901, Brazil
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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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Nevares G, de Albuquerque DS, Freire LG, Romeiro K, Fogel HM, Dos Santos M, Cunha RS. Efficacy of ProTaper NEXT Compared with Reciproc in Removing Obturation Material from Severely Curved Root Canals: A Micro-Computed Tomography Study. J Endod 2017; 42:803-8. [PMID: 27117757 DOI: 10.1016/j.joen.2016.02.010] [Citation(s) in RCA: 38] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2015] [Revised: 02/22/2016] [Accepted: 02/22/2016] [Indexed: 10/21/2022]
Abstract
INTRODUCTION The aim of this study was to compare the remaining root canal obturation, volume of dentin removed, and apical transportation after retreatment of severely curved root canals by using Reciproc (REC) or ProTaper NEXT (PTN) systems. METHODS Twenty-eight mesial canals of mandibular molars were instrumented and then obturated with gutta-percha and sealer and allocated into 2 balanced groups (n = 14), the REC group (R25 file) and the PTN group (X3 and X2 files). Micro-computed tomography analysis was performed to assess the percentage of residual obturation material, the amount of dentin removed, and apical transportation. The effective time for the removal of obturation and procedural errors were recorded. RESULTS Obturation was effectively removed from the root canal in the REC and PTN groups (P ≤ .001), and the percentages of remaining obturation material were similar between both groups (84.8% PTN vs 86.5% REC) (P > .05). The amount of dentin removed (3.17 ± 2.64 mm(3) PTN versus 3.50 ± 2.82 mm(3) REC), apical transportation (at 1 mm: 0.096 ± 0.189 mm PTN versus 0.093 ± 0.186 mm REC; at 3 mm: 0.059 ± 0.069 mm PTN versus 0.082 ± 0.080 mm REC; at 5 mm: 0.097 ± 0.093 mm PTN versus 0.133 ± 0.138 mm REC), and the working time (269.69 ± 19.25 seconds PTN versus 268.62 ± 16.37 seconds REC) were also similar in both groups (P > .05). One file fractured in the REC group. CONCLUSIONS Both systems were equally effective in the removal of obturation from severely curved canals and can be used for retreatment. Neither system could completely remove the obturation material; therefore, additional techniques are needed to improve cleaning of the root canal.
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Affiliation(s)
- Giselle Nevares
- Department of Operative Dentistry and Endodontics, Dental College of Pernambuco, University of Pernambuco, Camaragibe, Pernambuco, Brazil.
| | - Diana S de Albuquerque
- Department of Operative Dentistry and Endodontics, Dental College of Pernambuco, University of Pernambuco, Camaragibe, Pernambuco, Brazil
| | - Laila G Freire
- School of Dentistry, University of São Paulo, São Paulo, São Paulo, Brazil
| | - Kaline Romeiro
- Department of Operative Dentistry and Endodontics, Dental College of Pernambuco, University of Pernambuco, Camaragibe, Pernambuco, Brazil
| | - Howard M Fogel
- Division of Endodontics, College of Dentistry, University of Manitoba, Winnipeg, Manitoba, Canada
| | - Marcelo Dos Santos
- Division of Endodontics, Restorative Dentistry, School of Dentistry, University of São Paulo, São Paulo, São Paulo, Brazil
| | - Rodrigo S Cunha
- Division of Endodontics, College of Dentistry, University of Manitoba, Winnipeg, Manitoba, Canada
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Retreatability of three calcium silicate-containing sealers and one epoxy resin-based root canal sealer with four different root canal instruments. Clin Oral Investig 2017. [DOI: 10.1007/s00784-017-2156-5] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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Jorgensen B, Williamson A, Chu R, Qian F. The Efficacy of the WaveOne Reciprocating File System versus the ProTaper Retreatment System in Endodontic Retreatment of Two Different Obturating Techniques. J Endod 2017; 43:1011-1013. [DOI: 10.1016/j.joen.2017.01.018] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2014] [Revised: 12/28/2016] [Accepted: 01/15/2017] [Indexed: 10/19/2022]
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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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Topçuoğlu HS, Topçuoğlu G. Postoperative pain after the removal of root canal filling material using different techniques in teeth with failed root canal therapy: a randomized clinical trial. Acta Odontol Scand 2017; 75:249-254. [PMID: 28162017 DOI: 10.1080/00016357.2017.1283707] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Abstract
OBJECTIVES This study evaluated the intensity and duration of postoperative pain after the removal of root canal filling material in retreatment procedures of upper incisor teeth with chronic apical periodontitis, using different techniques. MATERIALS AND METHODS One hundred and thirty-five patients requiring retreatment of upper incisor teeth with chronic apical periodontitis were included in the study. The patients were assigned to three groups of 45 patients, according to the method used to remove old canal filling material. In group 1, canal filling material was removed using hand files. In group 2, the canal filling material was removed with ProTaper universal retreatment (PTUR) instruments. In group 3, Reciproc instruments were used to remove canal filling material. Teeth were then medicated with calcium hydroxide and sealed using temporary filling material. The presence of postoperative pain was assessed after 6, 12, 24, 48 and 72 h, 7 days, and finally after 10 days. RESULTS In all time intervals, except for 72 h, 7 days and 10 days, group 1 participants reported more intense postoperative pain than those in groups 2 and 3 (p = 0.02). In all time intervals, there was no difference in the pain scores between groups 2 and 3 (p = 0.08). In all groups, the intensity of postoperative pain decreased over time. The required time to remove canal filling material was less for the Reciproc group compared to the hand and ProTaper retreatment groups (p = 0.032). CONCLUSIONS Hand files caused greater postoperative pain after non-surgical endodontic retreatment (NSER) of upper incisor teeth with chronic apical periodontitis compared to the ProTaper retreatment and Reciproc files.
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Affiliation(s)
| | - Gamze Topçuoğlu
- Department of Pedodontics, Faculty of Dentistry, Erciyes University, Kayseri, Turkey
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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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Gomes NN, de Carvalho GM, Júnior ECS, Garcia LDFR, Marques AAF, de Carvalho FMA. Filling Material Removal with Reciprocating and Rotary Systems Associated with Passive Ultrasonic Irrigation. Eur Endod J 2017; 2:1-7. [PMID: 33403335 PMCID: PMC7757952 DOI: 10.5152/eej.2017.16037] [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: 09/20/2016] [Revised: 10/31/2016] [Accepted: 12/23/2016] [Indexed: 11/22/2022] Open
Abstract
Objective: The purpose of this ex vivo study was to evaluate the filling material removal ability, and the time required to perform this procedure, of reciprocating and conventional rotary systems when associated with passive ultrasonic irrigation. Methods: The palatal roots of 40 maxillary molars were submitted to root canal preparation and filling. The desobturation of root canals was initially performed with Largo burs in the coronal portion (4 mm) to drill the gutta-percha and to facilitate the action of the instruments used then. Next, the palatal roots were randomly distributed (n=10) according to the systems and irrigation protocols used for filling material removal: ProTaper universal retreatment (PTR), PTR+passive ultrasonic irrigation (PUI) (PTR+PUI), Reciproc system (RS), and RS+PUI. Passive ultrasonic activation was performed in the root canals completely filled with 2.5% sodium hypochlorite solution using a smooth and straight ultrasonic tip, coupled to a low-power (20%) ultrasonic device for 1 min (3 cycles of 20 s). After retreatment, the roots were longitudinally sectioned to the remaining filling material quantification using an operating microscope. Environmental scanning electron microscopy (ESEM) micrographs at 97, 105, and 250 X magnifications were also taken to evaluate the quantity of filling material present at the apical portion of the palatal roots. Results: The RS group presented greater quantity of filling material attached to the root canal walls than the other groups (P>0.05). PTR+PUI and RS+PUI groups were statistically similar (P>0.05). Reinstrumentation of root canals using RS was faster than PTR, irrespective of the irrigation protocol used (P>0.05). Conclusion: The association between PUI and the different systems for reinstrumentation yielded greSater filling material removal. The reciprocating system was faster.
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