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Tantiwanichpun B, Kulvitit S. Efficiency and complications in root canal retreatment using nickel titanium rotary file with continuous rotation, reciprocating, or adaptive motion in curved root canals: a laboratory investigation. BMC Oral Health 2023; 23:871. [PMID: 37974131 PMCID: PMC10655496 DOI: 10.1186/s12903-023-03610-x] [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: 09/15/2023] [Accepted: 11/01/2023] [Indexed: 11/19/2023] Open
Abstract
BACKGROUND It is currently unknown whether rotary file motion affects the best outcome of root canal retreatment. This experimental study compared the efficacy, efficiency, and complications of single-use NiTi rotary files using continuous rotation, reciprocating, and adaptive motions in root canal filling removal in curved root canals. Reciproc blue R25 was used with reciprocating motion (RB), VDW.ROTATE retreatment files with continuous rotation (VR), and ProTaper NEXT X2 with continuous rotation (PTNc) or adaptive motion (PTNa). METHODS Forty mesial root canals of extracted mandibular first and second molars with an angle of curvature between 20°-40° and a radius of curvature between 5 and 10 mm were collected. The specimens were instrumented and obturated with gutta-percha and AH Plus sealer using the continuous wave of condensation technique. The specimens were randomly divided into 4 retreatment groups (n = 10), RB, VR, PTNc, and PTNa. The percentage of root canal filling removal in each group was analyzed using Micro-Computed Tomography (µCT). The motor running time, total time, root canal complication, and instrument complication were recorded and statistically analyzed (p-value < 0.05). RESULTS The pre-operative root canal curvature and root canal filling volume were comparable among groups. The percentage of root canal filling removal from the whole canal in the PTNc, RB, PTNa, and VR group was 98%, 96%, 95%, and 93%, respectively. A significant difference was observed between the PTNc and VR groups for the whole canal and the apical-third part. The motor running time and total time were significantly different between the groups. Instrument fracture was observed at 40% in the VR and 20% in the PTNa group, but none in the RB and PTNc groups. CONCLUSIONS The ProTaper NEXT X2 with continuous rotation and RB files can be used with high efficacy and efficiency in curved root canal retreatment. Continuous rotation is more efficacious and efficient than adaptive motion when using the NiTi rotary file. Single file retreatment can be used in small canals with high efficacy, cost-effectiveness, and less time consumption.
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Affiliation(s)
- Benjaporn Tantiwanichpun
- Department of Operative Dentistry, Faculty of Dentistry, Chulalongkorn University, Bangkok, 10330, Thailand
| | - Sirinya Kulvitit
- Department of Operative Dentistry, Faculty of Dentistry, Chulalongkorn University, Bangkok, 10330, Thailand.
- Center of Excellence in Genomics and Precision Dentistry, Faculty of Dentistry, Chulalongkorn university, Bangkok, 10330, Thailand.
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Adel M, Tofangchiha M, Rashvand E, Moutabha I, Roohi N, Reda R, Testarelli L. Comparison of the Efficacy of NeoNiTi, ProTaper, and Reciproc Files in the Retreatment of Curved Root Canals: a CBCT Assessment. Acta Stomatol Croat 2022; 56:351-362. [PMID: 36713275 PMCID: PMC9873003 DOI: 10.15644/asc56/4/2] [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: 07/12/2022] [Accepted: 09/02/2022] [Indexed: 12/29/2022] Open
Abstract
Objective Effective tools and methods are applied during root canal retreatment to eliminate root canal obturation materials and preserve the initial root canal anatomy. The present study compared the efficacy of Reciproc, Neoniti, ProTaper, and Hedstrom files in the retreatment of curved root canals. Material and methods In the present in vitro study, 100 root canals with 25‒45º curvatures were used. After the samples were initially prepared and examined by CBCT, the root canals were obturated with gutta-percha and randomly assigned to four groups (n=25). A retreatment was carried out in each group with NeoNiTi, ProTaper, Reciproc, and Hedstrom files. CBCT examinations were carried out again under the same conditions. The samples were evaluated at 3-, 6-, and 9-mm distances from the apex on the first and the second CBCT image for root canal transportation and remaining gutta-percha in the root canals. The time required for retreating each canal in each sample was recorded. One-way ANOVA and corresponding non-parametric tests were applied for data analysis. Results The root canal transportation in the NeoNiTi group was lower than that in the other groups and significantly different from the ProTaper group (P<0.05). There was a remaining gutta-percha after retreatments in all the four groups, which was not statistically significant (P>0.05). Conclusion Despite the fact that the NeoNiTi file produced less transportation than other file systems evaluated in the retreatment of curved root canals, all the files were very effective at the clinically acceptable levels.
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Affiliation(s)
- Mamak Adel
- Department of Endodontics, Dental Caries Prevention Research Center, Qazvin University of Medical Sciences, Qazvin, Iran
| | - Maryam Tofangchiha
- Department of Oral and Maxillofacial Radiology, Dental Caries Prevention Research Center, Qazvin University of Medical Sciences, Qazvin, Iran
| | - Ensiyeh Rashvand
- Department of Operative Dentistry, School of Dentistry, Alborz University of Medical Sciences, Karaj, Iran
| | - Iman Moutabha
- Postgraduate Student, Department of Endodontics, Student Research Committee, Qazvin University of Medical Sciences, Qazvin, Iran
| | - Neda Roohi
- Department of Endodontics, School of Dentistry, Qazvin University of Medical Sciences, Qazvin, Iran
| | - Rodolfo Reda
- Department of Oral and Maxillo-Facial Sciences, La Sapienza University of Rome, Italy
| | - Luca Testarelli
- Department of Oral and Maxillo-Facial Sciences, La Sapienza University of Rome, Italy
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Simões LP, Dos Reis-Prado AH, Bueno CRE, Viana ACD, Duarte MAH, Cintra LTA, Lemos CAA, Benetti F. Effectiveness and safety of rotary and reciprocating kinematics for retreatment of curved root canals: a systematic review of in vitro studies. Restor Dent Endod 2022; 47:e22. [PMID: 35692221 PMCID: PMC9160764 DOI: 10.5395/rde.2022.47.e22] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2021] [Revised: 09/07/2021] [Accepted: 10/17/2021] [Indexed: 11/21/2022] Open
Abstract
Objectives This systematic review (register-osf.io/wg7ba) compared the efficacy and safety of rotary and reciprocating kinematics in the removal of filling material from curved root canals. Materials and Methods Only in vitro studies evaluating both kinematics during retreatment were included. A systematic search (PubMed/MEDLINE, Scopus, and other databases, until January 2021), data extraction, and risk of bias analysis (Joanna Briggs Institute checklist) were performed. Efficacy in filling removal was the primary outcome. Results The search resulted in 2,795 studies, of which 15 were included. Efficacy was measured in terms of the remaining filling material and the time required for this. Nine studies evaluated filling material removal, of which 7 found no significant differences between rotary and reciprocating kinematics. Regarding the time for filling removal, 5 studies showed no difference between both kinematics, 2 studies showed faster results with rotary systems, and other 2 showed the opposite. No significant differences were found in apical transportation, centering ability, instrument failure, dentin removed and extruded debris. A low risk of bias was observed. Conclusions This review suggests that the choice of rotary or reciprocating kinematics does not influence the efficacy of filling removal from curved root canals. Further studies are needed to compare the kinematics safety in curved root canals.
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Affiliation(s)
- Lucas Pinho Simões
- Department of Restorative Dentistry, Universidade Federal de Minas Gerais (UFMG), School of Dentistry, Belo Horizonte, MG, Brazil
| | | | | | - Ana Cecília Diniz Viana
- Department of Restorative Dentistry, Universidade Federal de Minas Gerais (UFMG), School of Dentistry, Belo Horizonte, MG, Brazil
| | - Marco Antônio Húngaro Duarte
- Department of Dentistry, Endodontics and Dental Materials, University of São Paulo (USP), School of Dentistry, Bauru, SP, Brazil
| | | | - Cleidiel Aparecido Araújo Lemos
- Department of Dentistry, Federal University of Juiz de Fora, Campus GV (UFJF-GV), School of Dentistry, Governador Valadares, MG, Brazil
| | - Francine Benetti
- Department of Restorative Dentistry, Universidade Federal de Minas Gerais (UFMG), School of Dentistry, Belo Horizonte, MG, Brazil
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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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Saricam E, Ince-Yusufoglu S, Ocak M, Geneci F, Celik HH. The retreatment abilities of ProTaper Next and F6 Skytaper: a micro-computed tomography study. Eur Oral Res 2020; 55:74-79. [PMID: 34250473 PMCID: PMC8244941 DOI: 10.26650/eor.20210009] [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: 03/15/2020] [Revised: 08/07/2020] [Accepted: 12/14/2020] [Indexed: 11/20/2022] Open
Abstract
Purpose The aim of this study was to evaluate the retreatment abilities of the ProTaper Next (PTN) and F6 SkyTaper (F6) systems by using micro-computed tomography (microct), radiographic and microscopic imaging techniques. Materials and methods The root canals of twenty-six extracted mandibular premolar teeth were prepared and obturated. For the retreatment procedure, the teeth were randomly divided into two equal groups according to endodontic instruments: PTN (X4) and F6 (#40/.06). Pre- and post-operative filling material volumes were measured with micro-ct, and areas were measured with radiographic and microscopic imaging techniques. The percentages of residual material were calculated, and then statistically compared. The significance level was set at p<0.05. Results There was no statistically significant difference between F6 and PTN for retreatment efficacy in the micro-ct and radiographic imaging techniques (p>0.05). PTN demonstrated better cleaning ability when evaluated by microscopic imaging. (p<0.05). The correlation was moderate between micro-ct and radiographic, and micro-ct and microscopic imaging groups; however, it was strong between radiographic and microscopic imaging methods. Conclusion The PTN and F6 files had similar effects in the removal of filling material with microct evaluation. The radiographic imaging method gave similar results with micro-ct imaging.
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Affiliation(s)
- Esma Saricam
- Department of Endodontics, Faculty of Dentistry, Ankara Yildirim Beyazit University, Ankara, Turkey
| | | | - Mert Ocak
- Department of Anatomy, Faculty of Medicine, Ankara Yildirim Beyazit University, Ankara Turkey
| | - Ferhat Geneci
- Department of Anatomy, Faculty of Medicine, Hacettepe University, Ankara,Turkey
| | - H Hamdi Celik
- Department of Anatomy, Faculty of Medicine, Hacettepe University, Ankara,Turkey
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