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Evolution and development: engine-driven endodontic rotary nickel-titanium instruments. Int J Oral Sci 2022; 14:12. [PMID: 35181648 PMCID: PMC8857196 DOI: 10.1038/s41368-021-00154-0] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2021] [Revised: 12/06/2021] [Accepted: 12/20/2021] [Indexed: 11/08/2022] Open
Abstract
Various engine-driven NiTi endodontic files have been indispensable and efficient tools in cleaning and shaping of root canals for practitioners. In this review, we introduce the relative terms and conceptions of NiTi file, including crystal phase composition, the design of the cutting part, types of separation. This review also analysis the main improvement and evolution of different generations of engine-driven nickel-titanium instruments in the past 20 years in the geometric design, manufacturing surface treatment such as electropolishing, thermal treatment, metallurgy. And the variety of motion modes of NiTi files to improve resistance to torsional failure were also discussed. Continuous advancements by the designers, provide better balance between shaping efficiency and resistance to of NiTi systems. In clinical practice an appropriate system should be selected based on the anatomy of the root canal, instrument characteristics, and operators' experience.
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Kim H, Jeon SJ, Seo MS. Comparison of the canal transportation of ProTaper GOLD, WaveOne GOLD, and TruNatomy in simulated double-curved canals. BMC Oral Health 2021; 21:533. [PMID: 34656099 PMCID: PMC8520641 DOI: 10.1186/s12903-021-01854-z] [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: 01/13/2021] [Accepted: 09/23/2021] [Indexed: 11/25/2022] Open
Abstract
Background In root canal preparations, it is important to maintain the original canal shape. However, it is difficult to accomplish this, especially due to the complex canal anatomy. This study aimed to compare the shaping ability of the ProTaper GOLD, WaveOne GOLD, and newly developed TruNatomy in simulated S-shaped canals. Methods The root canals of 60 S-shaped resin blocks were dyed using ink and photographed. The blocks were then randomly divided into three groups: group ProTaper GOLD (n = 20), WaveOne GOLD (n = 20), and TruNatomy (n = 20). The simulated canals were instrumented according to the NiTi file system and photographed again after being dyed with red ink. The pre- and post-preparation images were superimposed, and the amount of resin removed from both the mesial and distal sides of the canal measured up to 9 mm from the apical terminus, with a 1 mm increment. The preparation time was also calculated. A paired t-test was used to determine the degree of deviation at different levels within the groups. To compare the degree of transportation at different levels between the groups, one-way ANOVA and Kruskal–Wallis tests were performed according to the normality. Results TruNatomy showed a significant deviation between the mesial and distal sides of the canal only in the coronal area at 6, 7, 8, and 9 mm levels of the canal (p < 0.05). When comparing the amount of transportation in the 3 groups at 9 different levels, TruNatomy showed significantly less canal transportation than the other groups at the 3-and 5-mm levels of the canal (p < 0.05), while ProTaper GOLD showed the largest amount of transportation in the apical curved area at the 2 and 3 mm levels (p < 0.05). TruNatomy removed less resin than other groups in all sections (p < 0.05), while ProTaper GOLD removed slightly more resin than WaveOne GOLD; however, there was no significant difference (p = 0.043). Shaping time was the least for TruNatomy, followed by the WaveOne GOLD and ProTaper GOLD (p < 0.05). Conclusions TruNatomy maintained the original apical canal curvature in S-shaped curved canals better than ProTaper GOLD and WaveOne GOLD.
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Affiliation(s)
- HyeWon Kim
- Department of Conservative Dentistry, Wonkang University Daejeon Dental Hospital, 77 Dunsan-Ro, Seo-Gu, Daejeon, 302-120, Republic of Korea
| | - Su-Jin Jeon
- Department of Conservative Dentistry, Wonkang University Daejeon Dental Hospital, 77 Dunsan-Ro, Seo-Gu, Daejeon, 302-120, Republic of Korea
| | - Min-Seock Seo
- Department of Conservative Dentistry, Wonkang University Daejeon Dental Hospital, 77 Dunsan-Ro, Seo-Gu, Daejeon, 302-120, Republic of Korea.
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Velozo C, Silva S, Almeida A, Romeiro K, Vieira B, Dantas H, Sousa F, De Albuquerque DS. Shaping ability of XP‐endo Shaper and ProTaper Next in long oval‐shaped canals: a micro‐computed tomography study. Int Endod J 2020; 53:998-1006. [DOI: 10.1111/iej.13301] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2019] [Accepted: 03/23/2020] [Indexed: 11/28/2022]
Affiliation(s)
- C. Velozo
- Department of Restorative Dentistry and Endodontics Dental College of Pernambuco University of Pernambuco Camaragibe Brazil
| | - S. Silva
- Department of Restorative Dentistry and Endodontics Dental College of Pernambuco University of Pernambuco Camaragibe Brazil
| | - A. Almeida
- Department of Restorative Dentistry and Endodontics Dental College of Pernambuco University of Pernambuco Camaragibe Brazil
| | - K. Romeiro
- Department of Restorative Dentistry and Endodontics Dental College of Pernambuco University of Pernambuco Camaragibe Brazil
| | - B. Vieira
- Department of Morphology Health Science Center Federal University of Paraíba Paraíba Brazil
| | - H. Dantas
- Department of Morphology Health Science Center Federal University of Paraíba Paraíba Brazil
| | - F. Sousa
- Department of Morphology Health Science Center Federal University of Paraíba Paraíba Brazil
| | - D. S. De Albuquerque
- Department of Restorative Dentistry and Endodontics Dental College of Pernambuco University of Pernambuco Camaragibe Brazil
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Pacheco‐Yanes J, Gazzaneo I, Pérez AR, Armada L, Neves MAS. Transportation assessment in artificial curved canals after instrumentation with Reciproc, Reciproc Blue, and
XP
‐endo Shaper Systems. ACTA ACUST UNITED AC 2019; 10:e12417. [DOI: 10.1111/jicd.12417] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2018] [Revised: 01/14/2019] [Accepted: 02/22/2019] [Indexed: 02/06/2023]
Affiliation(s)
- Juan Pacheco‐Yanes
- Department of Endodontics Faculty of Dentistry Estácio de Sá University Rio de Janeiro Brazil
| | - Isbelia Gazzaneo
- Department of Endodontics Faculty of Dentistry Estácio de Sá University Rio de Janeiro Brazil
| | - Alejandro R. Pérez
- Department of Endodontics Faculty of Dentistry Estácio de Sá University Rio de Janeiro Brazil
| | - Luciana Armada
- Department of Endodontics Faculty of Dentistry Estácio de Sá University Rio de Janeiro Brazil
| | - Mônica A. S. Neves
- Department of Endodontics Faculty of Dentistry Estácio de Sá University Rio de Janeiro Brazil
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Huang Z, Quan J, Liu J, Zhang W, Zhang X, Hu X. A microcomputed tomography evaluation of the shaping ability of three thermally-treated nickel-titanium rotary file systems in curved canals. J Int Med Res 2019; 47:325-334. [PMID: 30282507 PMCID: PMC6384480 DOI: 10.1177/0300060518801451] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2018] [Accepted: 08/28/2018] [Indexed: 11/18/2022] Open
Abstract
OBJECTIVE To evaluate the shaping ability of three thermally-treated rotary nickel-titanium (NiTi) systems including ProTaper Next (PTN), HyFlex™ CM (HFCM) and HyFlex™ EDM (HFEDM) during root canal preparation in simulated root canals. METHODS A total of 45 simulated root canals were divided into three groups ( n = 15) and prepared with PTN, HFCM or HFEDM files up to size 25. Microcomputed tomography (microCT) was used to scan the specimens before and after instrumentation. Volume and diameter changes, transportations and centring ratios at 11 levels of the simulated root canals were measured and compared. RESULTS HFEDM caused significantly greater volume increases than HFCM and PTN in the entire root canal and in the apical and middle thirds. HFCM removed the least amount of resin in the coronal third compared with HFEDM and PTN. Overall, HFCM caused significantly less transportation in the apical 2 mm and was better centred than PTN in the apical 3 mm. CONCLUSION Under the conditions of this study, all systems prepared curved canals without significant shaping errors and instrument fracture. PTN and HFCM cut less resin than HFEDM. HFCM stayed centred apically and cut the least material coronally.
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Affiliation(s)
- Zhuwei Huang
- Department of Operative Dentistry and Endodontics, Guanghua School of Stomatology, Affiliated Stomatological Hospital, Guangdong Provincial Key Laboratory of Stomatology, Sun Yat-sen University, Guangzhou, Guangdong Province, China
| | - Jingjing Quan
- Department of Operative Dentistry and Endodontics, Guanghua School of Stomatology, Affiliated Stomatological Hospital, Guangdong Provincial Key Laboratory of Stomatology, Sun Yat-sen University, Guangzhou, Guangdong Province, China
| | - Jia Liu
- Department of Operative Dentistry and Endodontics, Guanghua School of Stomatology, Affiliated Stomatological Hospital, Guangdong Provincial Key Laboratory of Stomatology, Sun Yat-sen University, Guangzhou, Guangdong Province, China
| | - Wen Zhang
- Department of Operative Dentistry and Endodontics, Guanghua School of Stomatology, Affiliated Stomatological Hospital, Guangdong Provincial Key Laboratory of Stomatology, Sun Yat-sen University, Guangzhou, Guangdong Province, China
| | - Xiaolei Zhang
- Department of Operative Dentistry and Endodontics, Guanghua School of Stomatology, Affiliated Stomatological Hospital, Guangdong Provincial Key Laboratory of Stomatology, Sun Yat-sen University, Guangzhou, Guangdong Province, China
| | - Xiaoli Hu
- Department of Operative Dentistry and Endodontics, Guanghua School of Stomatology, Affiliated Stomatological Hospital, Guangdong Provincial Key Laboratory of Stomatology, Sun Yat-sen University, Guangzhou, Guangdong Province, China
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Christofzik D, Bartols A, Faheem MK, Schroeter D, Groessner-Schreiber B, Doerfer CE. Shaping ability of four root canal instrumentation systems in simulated 3D-printed root canal models. PLoS One 2018; 13:e0201129. [PMID: 30067792 PMCID: PMC6070255 DOI: 10.1371/journal.pone.0201129] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2017] [Accepted: 07/09/2018] [Indexed: 11/21/2022] Open
Abstract
Introduction The aim of this study was to compare the shaping ability of four root canal preparation systems in newly developed 3D-printed root canal models. Materials and methods For this study, 1080 3D-printed acrylic resin blocks with nine different root canal configurations were produced. They were prepared with Reciproc R25 (#25), F6 SkyTaper (#25 and #30) F360 (#25 and #35) and One Shape (#25) (N = 30 per system). Pre- and post-instrumentation images were superimposed for evaluation of the centering ratio of the different systems. Ledges, instrument fractures and preparation times were also recorded. Analysis of variance (ANOVA) and post-hoc Tukey tests were conducted, comparing the mean canal centering ratios and the mean preparation times. Results There were significant differences between all systems regarding the centering ratios in the different root canal configurations (ANOVA p < 0.001). The root canal configuration had considerable effect on the centering ratio of the instruments. The best overall mean centering ratios were achieved with F6 SkyTaper #25 instruments especially in canal configurations with big curvature angles and radii, while F360 #35 was least centered especially in canals with small curvature angles and radii. Most ledges occurred with OneShape, while it was the significantly (p < 0.001) fastest preparation system (86.7 s (SD 13.53)) and Reciproc the significantly (p < 0.001) slowest (103.0 s (SD 20.67)). Conclusion 3D-printed root canals are suitable to produce challenging canal configurations and to investigate the limitations of root canal instruments. We found that all instruments caused canal transportations. However, F6 SkyTaper #25 files had better overall centering ratios than the other instruments. In canal configurations with small curvature radii, the centering ratio of some instruments is low and the probability for ledges is increased.
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Affiliation(s)
- David Christofzik
- Clinic for Conservative Dentistry and Periodontology, School for Dental Medicine, Christian-Albrechts-University Kiel, Kiel, Germany
- * E-mail:
| | - Andreas Bartols
- Clinic for Conservative Dentistry and Periodontology, School for Dental Medicine, Christian-Albrechts-University Kiel, Kiel, Germany
- Dental Academy for Continuing Professional Development Karlsruhe, Karlsruhe, Germany
| | - Mahmoud Khaled Faheem
- Clinic for Conservative Dentistry and Periodontology, School for Dental Medicine, Christian-Albrechts-University Kiel, Kiel, Germany
| | - Doreen Schroeter
- Clinic for Conservative Dentistry and Periodontology, School for Dental Medicine, Christian-Albrechts-University Kiel, Kiel, Germany
| | - Birte Groessner-Schreiber
- Clinic for Conservative Dentistry and Periodontology, School for Dental Medicine, Christian-Albrechts-University Kiel, Kiel, Germany
| | - Christof E. Doerfer
- Clinic for Conservative Dentistry and Periodontology, School for Dental Medicine, Christian-Albrechts-University Kiel, Kiel, Germany
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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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Abstract
OBJECTIVES Technological development and the need for electronic health records management resulted in the need for a computer with dedicated, commercial software in daily dental practice. The alternative for commercial software may be open-source solutions. Therefore, this study reviewed the current literature on the availability and use of open-source software (OSS) in dentistry. METHODS A comprehensive database search was performed on February 1, 2017. Only articles published in peer-reviewed journals with a focus on the use or description of OSS were retrieved. The level of evidence, according to Oxford EBM Centre Levels of Evidence Scale was classified for all studies. Experimental studies underwent additional quality reporting assessment. RESULTS The screening and evaluation process resulted in twenty-one studies from 1,940 articles found, with 10 of them being experimental studies. None of the articles provided level 1 evidence, and only one study was considered high quality following quality assessment. Twenty-six different OSS programs were described in the included studies of which ten were used for image visualization, five were used for healthcare records management, four were used for educations processes, one was used for remote consultation and simulation, and six were used for general purposes. CONCLUSIONS Our analysis revealed that the dental literature on OSS consists of scarce, incomplete, and methodologically low quality information.
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