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Generali L, Checchi V, Borghi A, La Rosa GRM, Conte G, Zavattini A, Mannocci F, Angerame D, Consolo U, Pedullà E. Shaping ability of Procodile and R6 Reziflow nickel-titanium reciprocating instruments in curved mesial root canals of mandibular molars: A MicroCT study. Microsc Res Tech 2023; 86:1345-1352. [PMID: 37066970 DOI: 10.1002/jemt.24326] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2021] [Revised: 03/29/2023] [Accepted: 04/06/2023] [Indexed: 04/18/2023]
Abstract
To compare the shaping ability of Procodile and R6 Reziflow instruments used in reciprocating motion in severely curved root canals, assessed with micro-computed tomography (μCT). Fourteen extracted human mandibular first molars were randomly assigned to two instrumentation techniques (n = 14 mesial root canals): Procodile or R6 Reziflow. For both groups, root canals were prepared to the working length up to a size 25, .06 taper. Molars were virtually divided into apical, middle and coronal thirds and μCT was used to scan all samples pre- and post-root canal. Canal transportation, centring ability, volume, surface area and unprepared area were evaluated. Geometrical parameter changes were compared with preoperative values (one-way analyses of variance and Tukey multiple comparison post-hoc test) between groups and Student t-test within groups (α = 0.05) Significantly less transportation was observed associated with the Procodile technique in the molar's coronal third compared to the R6 Reziflow technique (p < .05). No significant differences in root canal centring ability, volume, surface area and unprepared area were observed. Procodile showed a lower percentage increase of surface area compared to R6 Reziflow (p < .05). The Procodile and R6 Reziflow techniques applied to first molar root canal performed similarly except for the less transportation observed in the coronal third using Procodile. RESEARCH HIGHLIGHTS: MicroCT analysis of canal geometry before and after instrumentation revealed that Procodile and R6 Reziflow showed a similar shaping ability to shape curved root canals without substantially modifications of the original tooth anatomy.
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Affiliation(s)
- Luigi Generali
- Department of Surgery, Medicine, Dentistry and Morphological Sciences with Transplant Surgery, Oncology and Regenerative Medicine Relevance (CHIMOMO), University of Modena and Reggio Emilia, Modena, Italy
| | - Vittorio Checchi
- Department of Surgery, Medicine, Dentistry and Morphological Sciences with Transplant Surgery, Oncology and Regenerative Medicine Relevance (CHIMOMO), University of Modena and Reggio Emilia, Modena, Italy
| | - Alessia Borghi
- Department of Surgery, Medicine, Dentistry and Morphological Sciences with Transplant Surgery, Oncology and Regenerative Medicine Relevance (CHIMOMO), University of Modena and Reggio Emilia, Modena, Italy
| | - Giusy Rita Maria La Rosa
- Department of General Surgery and Surgical-Medical Specialties, University of Catania, Catania, Italy
| | - Gianluca Conte
- Department of General Surgery and Surgical-Medical Specialties, University of Catania, Catania, Italy
| | - Angelo Zavattini
- Department of Endodontics, Faculty of Dentistry, Oral & Craniofacial Science, King's College London, Guy's Tower, Guy's Hospital, London, UK
| | - Francesco Mannocci
- Department of Endodontics, Faculty of Dentistry, Oral & Craniofacial Science, King's College London, Guy's Tower, Guy's Hospital, London, UK
| | - Daniele Angerame
- Clinical Department of Medical, Surgical and Health Sciences, University of Trieste, Trieste, Italy
| | - Ugo Consolo
- Department of Surgery, Medicine, Dentistry and Morphological Sciences with Transplant Surgery, Oncology and Regenerative Medicine Relevance (CHIMOMO), University of Modena and Reggio Emilia, Modena, Italy
| | - Eugenio Pedullà
- Department of General Surgery and Surgical-Medical Specialties, University of Catania, Catania, Italy
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Ali A, Saraf P, Kamatagi L, Khasnis S. Comparative Assessment of Canal Transportation, Dentin Loss, and Remaining Root Filling Material by Different Retreatment Files An In vitro Cross-Sectional Study. Contemp Clin Dent 2021; 12:14-20. [PMID: 33967532 PMCID: PMC8092085 DOI: 10.4103/ccd.ccd_31_20] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2020] [Revised: 04/22/2020] [Accepted: 05/29/2020] [Indexed: 11/23/2022] Open
Abstract
Aim: The purpose of this study was to evaluate the centering ability, canal transportation and efficacy of re-treatment rotary and hand files in removing Gutta Percha from root canals using Cone Beam Computed Tomography(CBCT). Materials and Methods: Sixty extracted human maxillary anteriors were obturated and randomly divided into three groups. Root fillings were removed with ProTaper Universal retreatment system, R-Endo system, and Hedstrom files. CBCT scans were taken. Statistical Analysis and Results: The data were analyzed using the Statistical Package for the Social Sciences (SPSS 15.0, IBM). The mean and standard deviation among the groups was calculated by one-way analysis of variance, Kruskal–Wallis, and Mann– Whitney U-tests, and the comparison among the various groups was done by post hoc Tukey's test. A statistically significant amount of remaining root canal filling material and canal transportation was noted (P < 0.05). Conclusion: No system completely removed the root filling material from root canals. Manual instrumentation resulted in more dentin loss and canal transportation than rotary file system.
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Affiliation(s)
- Afzal Ali
- Department of Conservative Dentistry and Endodontics, Pacific Dental College and Hospital, Udaipur, Rajasthan, India
| | - Prahlad Saraf
- Department of Conservative Dentistry and Endodontics, PMNM Dental College and Hospital, Navanagar, Bagalkot, Karnataka, India
| | - Laxmikant Kamatagi
- Department of Conservative Dentistry and Endodontics, PMNM Dental College and Hospital, Navanagar, Bagalkot, Karnataka, India
| | - Sandhya Khasnis
- Department of Conservative Dentistry and Endodontics, PMNM Dental College and Hospital, Navanagar, Bagalkot, Karnataka, India
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A Critical Review of Methods for Quantitative Evaluation of Root Canal Transportation. J Endod 2021; 47:721-731. [PMID: 33587997 DOI: 10.1016/j.joen.2021.02.002] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2020] [Revised: 02/02/2021] [Accepted: 02/04/2021] [Indexed: 11/22/2022]
Abstract
INTRODUCTION A comparison between root canal transportation studies is nearly impossible because of nonstandardized transportation evaluation methods. The aim of the present review was to search, compare, and critically discuss transportation evaluation methods. METHODS A search of PubMed, Web of Science, Scopus, ScienceDirect, and reference lists of articles was conducted up to March 2020 using appropriate key words to identify transportation evaluation methods. The methods in the included articles were extracted, compared, and categorized. RESULTS Seventy-four articles using original methods were selected. All studies share 3 main steps: image acquisition, image measurements, and calculation of parameters. Images were acquired by photography, radiography, and computed tomographic imaging. Two types of measurements were used: the amount of removed material and the canal center point distance. The parameters were calculated and reported as distance or ratio. Relationships between the different transportation parameters were found and confirmed with mathematical simulation. CONCLUSIONS Although methods were proposed as being novel, similarities between them were found, enabling the classification of the methods and identifying correlations. The canal center point distance is the most suitable for the description of canal transportation because it is comprehensible and it relates to the mathematical concept of translation. Removed material-based measurements are double the value of the canal center point distance. Ratio parameters are not suitable for reporting transportation.
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Alghamdi A, Alsofi L, Balto K. Effects of a Novel NiTi Thermomechanical Treatment on the Geometric Features of the Prepared Root Canal System. MATERIALS 2020; 13:ma13235546. [PMID: 33291766 PMCID: PMC7730099 DOI: 10.3390/ma13235546] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/16/2020] [Revised: 12/02/2020] [Accepted: 12/03/2020] [Indexed: 11/24/2022]
Abstract
Objectives: This study aimed to compare the ex vivo performance of two rotary nickel–titanium (NiTi) systems with similar designs but manufactured from martensitic and austenitic alloys, the One Curve (OC) and One Shape (OS) rotary endodontic files, respectively. Methods: Forty separate mesial canals of 20 extracted mandibular molars were scanned using micro-computed tomography (CT), which were divided into 2 groups and instrumented with OC and OS, respectively. Post-instrumentation micro-CT scans were evaluated using validated computer algorithms to compare changes in canal thickness, surface area, structure model index (SMI) scores, volume of removed dentin, percentage of untreated canal surface, percentage of curvature straightening, and the amount of canal transportation. Results: Both files led to significant changes in the basic root canal geometry, with no preparation errors and no statistically significant differences. However, OC treatment resulted in significantly less curvature straightening (17.30%; 10.77%) (independent samples t test, p < 0.05) and less apical transportation (55.11 µm; 33.15 µm) (Mann–Whitney U, test p < 0.05) compared to OS treatment. Transportation values in the middle and coronal thirds were statistically similar (independent sample t-test, p > 0.05). OC treatment produced significantly less straightening and less apical transportation than OS.
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Nehme W, Araji S, Michetti J, Zogheib C, Naaman A, Khalil I, Pages R, Basarab A, Mallet JP, Diemer F. Assessment of root canal transportation of 2Shape and ProTaper gold in mandibular molar mesial canals: A micro-computed tomographic study. Microsc Res Tech 2020; 84:746-752. [PMID: 33227176 DOI: 10.1002/jemt.23633] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2020] [Revised: 07/21/2020] [Accepted: 10/08/2020] [Indexed: 11/07/2022]
Abstract
The aim of this study was to compare shaping abilities of Protaper Gold® (PTG) and 2Shape® (TS) by using a new automatic process and micro-computed tomography (Micro-CT). 32 first mandibular molars with two separate mesial canals were selected. Only mesial roots were prepared with PTG and TS. Pre- and post-operative scans were performed using Micro-CT to provide volumes with a voxel size of 20 μm. Volumes, non-instrumented area, amount of transportation and centering ability in coronal, middle and apical third shaping time and procedural errors were recorded. TS and PTG increased the endodontic volume of 2.98 mm3 (±1.56) and 3.21 mm3 (±1.78) respectively with no statistical difference (p = .168) and no procedural errors. No significant difference was found concerning canal transportation among groups but only within the same group PTG (p value < .001) and TS (p value < .001). The mean centering ratio was significantly different only between the section levels for PTG (p value < .001) and TS (p value = .01); it was significantly reduced in the cervical third. The percentage of untouched canal walls ranged between 29.78% (±15.145) and 36.60% (±11.968) respectively for PTG and TS with no statistical difference among groups (p value = .168). TS and PTG with post machining heat treatment were able to produce centered preparations with no significant difference or procedural errors. TS system provided a shorter preparation time than PTG files.
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Affiliation(s)
- Walid Nehme
- Saint-Joseph University, IRIT, CNRS UMR 5505, Toulouse, France
| | - Stephanie Araji
- Saint-Joseph University, IRIT, CNRS UMR 5505, Toulouse, France
| | - Jérôme Michetti
- Saint-Joseph University, Campus des Sciences Medicales, Beirut, Lebanon
| | - Carla Zogheib
- Saint-Joseph University, IRIT, CNRS UMR 5505, Toulouse, France
| | - Alfred Naaman
- Saint-Joseph University, IRIT, CNRS UMR 5505, Toulouse, France
| | - Issam Khalil
- Saint-Joseph University, IRIT, CNRS UMR 5505, Toulouse, France
| | - Raphaël Pages
- Saint-Joseph University, Campus des Sciences Medicales, Beirut, Lebanon
| | - Adrian Basarab
- Saint-Joseph University, Campus des Sciences Medicales, Beirut, Lebanon
| | | | - Franck Diemer
- Faculté de Chirurgie Dentaire, CHU de Toulouse, University of Toulouse, Toulouse, France.,Clement Ader Institute, Toulouse, France
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Influence of endodontic cavity access on curved root canal preparation with ProDesign Logic rotary instruments. Clin Oral Investig 2020; 25:469-475. [PMID: 32556658 DOI: 10.1007/s00784-020-03390-6] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2019] [Accepted: 06/03/2020] [Indexed: 01/28/2023]
Abstract
OBJECTIVE This study evaluates whether endodontic cavity access into molars influences the chemomechanical preparation of curved root canals. MATERIALS AND METHODS Twenty mesiobuccal canals of maxillary molars were randomly divided into two experimental groups (n = 10), according to the type of endodontic access analyzed (conventional and minimally invasive). The preparations were made by a single operator, and the canals, after access, were prepared with Logic system (0.25, 0.04 taper) along the working length. Samples were scanned before and after canal preparation (SMX-90CT Plus (Shimadzu® microtomograph operated with 70 kV, 100 uA, FOV (XY) 13.3 mm, FOV (Z) 7.0 mm, and voxel size 0.013 mm/Pix)) to match canal volumes. Images were analyzed to evaluate surface areas, transport, and centralization at 3 mm from the canal entrance and 3 mm from the apex (OnDemand3DTM Dental software). Student's t test with a significance level of 5% was used for the statistical analysis. RESULTS Regardless of the position of the analyzed canals, there was no difference in the prepared area regarding the transport and centralization of the endodontic instrument between the two types of cavity accesses performed. CONCLUSIONS The conventional and minimally invasive access did not influence the action of the 0.25 and 0.04 taper instrument during the curved root canal preparation. CLINICAL RELEVANCE The type of endodontic access did not influence the action of the rotary instrument during the curved root canal preparation.
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Česaitienė G, Venskutonis T, Mačiulskienė V, Cicėnas V, Samaitis V, Jasiūnienė E. Micro-Computed Tomography (Micro-CT) Evaluation of Effects of Different Rotary Glide Path Techniques on Canal Transportation and Centering in Curved Root Canals. Med Sci Monit 2019; 25:6351-6358. [PMID: 31444318 PMCID: PMC6719729 DOI: 10.12659/msm.916112] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
Abstract
BACKGROUND The aim of this study was to evaluate the ability of different rotary glide path techniques to maintain canal anatomy by comparing canal transportation and centring abilities in curved root canals using X-ray micro-computed tomography (micro-CT). MATERIAL AND METHODS We selected 36 root canals and randomly assigned them to 3 groups. The first group was instrumented using Pathfile (PF) 1 and PF2, the second group using PF2, and the third group using a Proglider (PG) instrument. Selected tooth samples were scanned using a micro-CT system with 8-µm resolution. Centring ability and transportation were compared at 5 levels: 0.5 mm (A0) and 1 mm (A1) from apical foramen, at the point of maximum root curvature (C0), at 1 mm below it (C-), and 1 mm above it (C+). Area, ratio of areas (RA), perimeter, centroid shift, mean diameter, and ratio of diameter ratios (RDR) were assessed. RESULTS In all groups, there were no significant differences between different levels in all parameters (p>0.05). In group 1, the centroid shift was greatest at A0 and C-, and the least impact was at C0. In group 2, the biggest impacts were at C- and A0, and the smallest at C+. In group 3, the greatest impacts were at A0 and A1, and the smallest at C0. CONCLUSIONS All 3 instrument groups performed very similarly, without significant differences in canal-shaping parameters. Overall, using just PF2 instead of PF 1 and 2 created very similar shaping results, which could reduce the number of instruments needed and the cost of treatment.
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Affiliation(s)
- Gabrielė Česaitienė
- Department of Dental and Oral Pathology, Lithuanian University of Health Sciences, Kaunas, Lithuania
| | - Tadas Venskutonis
- Department of Dental and Oral Pathology, Lithuanian University of Health Sciences, Kaunas, Lithuania
| | - Vita Mačiulskienė
- Department of Dental and Oral Pathology, Lithuanian University of Health Sciences, Kaunas, Lithuania
| | - Vaidotas Cicėnas
- Prof. K. Baršauskas Ultrasound Research Institute, Kaunas University of Technology, Kaunas, Lithuania
| | - Vykintas Samaitis
- Prof. K. Baršauskas Ultrasound Research Institute, Kaunas University of Technology, Kaunas, Lithuania
| | - Elena Jasiūnienė
- Prof. K. Baršauskas Ultrasound Research Institute, Kaunas University of Technology, Kaunas, Lithuania.,Department of Electronics Engineering, Kaunas University of Technology, Kaunas, Lithuania
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Kyaw Moe MM, Ha JH, Jin MU, Kim YK, Kim SK. Root Canal Shaping Effect of Instruments with Offset Mass of Rotation in the Mandibular First Molar: A Micro–computed Tomographic Study. J Endod 2018; 44:822-827. [DOI: 10.1016/j.joen.2017.11.012] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2017] [Revised: 11/08/2017] [Accepted: 11/15/2017] [Indexed: 10/18/2022]
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Yuan G, Yang G. Comparative evaluation of the shaping ability of single-file system versus multi-file system in severely curved root canals. J Dent Sci 2018; 13:37-42. [PMID: 30895092 PMCID: PMC6388865 DOI: 10.1016/j.jds.2017.09.005] [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: 05/24/2017] [Revised: 08/25/2017] [Indexed: 12/03/2022] Open
Abstract
Background/purpose Reciprocating single-file systems are the latest nickel-titanium instruments and little information is available concerning the shaping ability of these new systems. Comparison of these single-file systems with well-known rotary multi-file systems is necessary. The purpose of this study was to compare the shaping ability of single-file system (WaveOne, WO) versus multiple-file system (ProTaper Next, PTN) in severely curved canals. Materials and methods A total of 20 severely curved canals were prepared with WO or PTN. Micro-computed tomography was used to scan the specimens before and after instrumentation. Differences between two groups in canal surface area, volume, Structure Model Index (SMI), thickness, straightening, the ratio of uninstrumented surface area and canal transportation were evaluated. Results The outline of the canals after preparation showed smooth taper in both groups. Canal surface area, volume, SMI, Thickness and canal curvature were significantly increased after preparation in both groups, and no significant difference was found between groups. At apical third, canals prepared with WO showed larger values of transportation compared with those in PTN group in the direction of main curvature. Approximately 29–34% of the root canal surface remained uninstrumented after preparation and no significant difference was noticed between groups. Conclusion Both of the two instrument systems maintained the original outline of the canals well. The canals prepared with PTN had less transportation and were better centered in the apical region.
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Affiliation(s)
- Guohua Yuan
- The State Key Laboratory Breeding Base of Basic Science of Stomatology, Key Laboratory for Oral Biomedicine of Ministry of Education, School and Hospital of Stomatology, Wuhan University, Wuhan, China
| | - Guobin Yang
- The State Key Laboratory Breeding Base of Basic Science of Stomatology, Key Laboratory for Oral Biomedicine of Ministry of Education, School and Hospital of Stomatology, Wuhan University, Wuhan, China
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Pinheiro SR, Alcalde MP, Vivacqua-Gomes N, Bramante CM, Vivan RR, Duarte MH, Vasconcelos BC. Evaluation of apical transportation and centring ability of five thermally treated NiTi rotary systems. Int Endod J 2017; 51:705-713. [DOI: 10.1111/iej.12881] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2017] [Accepted: 11/22/2017] [Indexed: 11/27/2022]
Affiliation(s)
| | - M. P. Alcalde
- Department of Dentistry, Endodontics and Dental Materials; Bauru Dental School; University of São Paulo; Bauru SP Brazil
| | - N. Vivacqua-Gomes
- School of Dentistry of Ceará; São Leopoldo Mandic University; Fortaleza CE Brazil
| | - C. M. Bramante
- Department of Dentistry, Endodontics and Dental Materials; Bauru Dental School; University of São Paulo; Bauru SP Brazil
| | - R. R. Vivan
- Department of Dentistry, Endodontics and Dental Materials; Bauru Dental School; University of São Paulo; Bauru SP Brazil
| | - M. A. H. Duarte
- Department of Dentistry, Endodontics and Dental Materials; Bauru Dental School; University of São Paulo; Bauru SP Brazil
| | - B. C. Vasconcelos
- Department of Dentistry, Endodontics and Dental Materials; Bauru Dental School; University of São Paulo; Bauru SP Brazil
- School of Dentistry of Sobral; Federal University of Ceará; Sobral CE Brazil
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Rover G, Belladonna FG, Bortoluzzi EA, De-Deus G, Silva EJNL, Teixeira CS. Influence of Access Cavity Design on Root Canal Detection, Instrumentation Efficacy, and Fracture Resistance Assessed in Maxillary Molars. J Endod 2017; 43:1657-1662. [DOI: 10.1016/j.joen.2017.05.006] [Citation(s) in RCA: 63] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2017] [Revised: 05/09/2017] [Accepted: 05/11/2017] [Indexed: 10/19/2022]
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