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Retnakaran A, Gaffoor FMA, Gopakumar R, Girish CS, Sajeena NC, Krishna NG. Comparative Evaluation of Efficiency of Different Endodontic File Systems; Protaper Universal, MTWO, Protaper Next, Trunatomy, I-Race in Terms of Remaining Dentin Thickness: An In vitro CBCT Analysis. JOURNAL OF PHARMACY AND BIOALLIED SCIENCES 2024; 16:S1409-S1413. [PMID: 38882834 PMCID: PMC11174237 DOI: 10.4103/jpbs.jpbs_697_23] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2023] [Revised: 08/21/2023] [Accepted: 08/27/2023] [Indexed: 06/18/2024] Open
Abstract
Introduction The longevity of an endodontically treated tooth depends on fracture resistance by preserving more remaining dentin thickness. The aim of this study is to determine which file system preserves more remaining dentin thickness. Materials and Methods Protaper universal, M-two, Protaper Next, Trunatomy, I-Race and mandibular first premolar. The removed dentin thickness during instrumentation of each file system was noted by taking the difference of RDT of pre-instrumentation and post-instrumentation with the aid of CBCT. Results and Discussion TRN [Group-4] shows the least aggressive cutting with maximal preservation of remaining dentin thickness at 3 mm and 6 mm from the apex at both mesiodistal and buccolingual dimensions. M-two [Group-2] shows maximum removed dentin thickness at 3 mm from the apex both mesiodistal dimension and buccolingual dimension. PTU [Group-1] shows maximum removed dentin thickness at 6 mm from the apex at mesiodistal dimension. M-two [Group-2] shows maximum removed dentin thickness at 6 mm from the apex at the buccolingual dimension. Conclusion In this study, it is concluded that the Trunatomy file system preserves more remaining dentin thickness both mesiodistally and buccolingually both 3 mm and 6 mm from the apex.
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Affiliation(s)
- Anju Retnakaran
- Department of Conservative Dentistry and Endodontics, Noorul Islam College of Dental Sciences, Trivandrum, Kerala, India
| | - Faisal M A Gaffoor
- Department of Conservative Dentistry and Endodontics, Noorul Islam College of Dental Sciences, Trivandrum, Kerala, India
| | - Rethi Gopakumar
- Department of Conservative Dentistry and Endodontics, Noorul Islam College of Dental Sciences, Trivandrum, Kerala, India
| | - C Sabari Girish
- Department of Conservative Dentistry and Endodontics, Noorul Islam College of Dental Sciences, Trivandrum, Kerala, India
| | - N C Sajeena
- Department of Conservative Dentistry and Endodontics, Noorul Islam College of Dental Sciences, Trivandrum, Kerala, India
| | - N Gokul Krishna
- Department of Conservative Dentistry and Endodontics, Noorul Islam College of Dental Sciences, Trivandrum, Kerala, India
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Jamleh A, Albanyan H, Alaqla A, Alissa H, Alshetan N, Alraffa S, Alfadley A. Impact of cooling on shaping ability of thermally treated files in canal models with double curvature. PeerJ 2023; 11:e15830. [PMID: 37576504 PMCID: PMC10416767 DOI: 10.7717/peerj.15830] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2023] [Accepted: 07/11/2023] [Indexed: 08/15/2023] Open
Abstract
Background This study compared the ability of thermally treated files in shaping simulated canals with double curvature. Fifty-six canals were enlarged to a final size of 25 with ProTaper Next (PTN) or ZenFlex (ZF). Materials Half of the samples were shaped with cooled files (n = 14 each). The amount of removed resin was measured and canal deviation was determined at eight levels. Shaping time and maximum shaping torque values were also recorded. Data were statistically analyzed using analysis of variance and LSD, Kruskal-Wallis, and chi-square tests at a 0.05 significance level. Results Compared to PTN and cooled PTN, ZF and cooled ZF required lesser time to shape the canals. The maximum torques were found comparable between the groups. All the groups generated negligible deviations at every canal level evaluated and maintained the canal geometry. Although not significant, the cooled PTN and ZF files exhibited lesser canal deviations than their counterparts. Conclusion All groups demonstrated similar shaping ability whilst maintaining the original curvature of the canal in simulated canals with double curvature. However, ZF groups were able to shape the canals faster than PTN groups. There was a trend that cooled files made lesser canal deviations compared to their counterparts.
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Affiliation(s)
- Ahmed Jamleh
- Department of Restorative and Prosthetic Dental Sciences, College of Dentistry, King Saud bin Abdulaziz University for Health Sciences, Riyadh, Saudi Arabia
- King Abdullah International Medical Research Center, Riyadh, Saudi Arabia
| | - Hajar Albanyan
- Department of Restorative and Prosthetic Dental Sciences, College of Dentistry, King Saud bin Abdulaziz University for Health Sciences, Riyadh, Saudi Arabia
- King Abdullah International Medical Research Center, Riyadh, Saudi Arabia
| | - Ali Alaqla
- Department of Restorative and Prosthetic Dental Sciences, College of Dentistry, King Saud bin Abdulaziz University for Health Sciences, Riyadh, Saudi Arabia
- King Abdullah International Medical Research Center, Riyadh, Saudi Arabia
| | - Hamad Alissa
- Department of Restorative and Prosthetic Dental Sciences, College of Dentistry, King Saud bin Abdulaziz University for Health Sciences, Riyadh, Saudi Arabia
- King Abdullah International Medical Research Center, Riyadh, Saudi Arabia
| | - Nawaf Alshetan
- Dr. Sulaiman Al-Habib Medical Group, Riyadh, Saudi Arabia
| | | | - Abdulmohsen Alfadley
- Department of Restorative and Prosthetic Dental Sciences, College of Dentistry, King Saud bin Abdulaziz University for Health Sciences, Riyadh, Saudi Arabia
- King Abdullah International Medical Research Center, Riyadh, Saudi Arabia
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Gomaa MA, Osama M, Badr AE. Shaping ability of three thermally treated nickel-titanium systems in S-shaped canals. AUST ENDOD J 2021; 47:435-441. [PMID: 33660339 DOI: 10.1111/aej.12496] [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: 09/25/2020] [Revised: 01/17/2021] [Accepted: 02/16/2021] [Indexed: 11/29/2022]
Abstract
This study aimed to compare the shaping ability of ProTaper Next (PTN), HyFlex EDM (HEDM) and One Curve (OC) systems manufactured via different thermal treatment methods in simulated S-shaped canals. Sixty S-shaped canals in clear resin blocks were enlarged to a final apical size of 25 using PTN, HEDM and OC instruments (n = 20 canals/group). Composite images were obtained by superimposing pre- and post-preparation images. The amount of removed resin was measured perpendicularly to the canal surface in 22 points. Prepared canal width and canal transportation at different levels were determined. Canal aberrations were also recorded. Data were statistically analysed using analysis of variance, the Kruskal-Wallis and the chi-square tests at a 0.05 significance level. OC produced the most conservative enlargement and better maintained particularly the apical curvature of the S-shaped canals than HEDM and PTN. OC and HEDM better maintained the canal terminus and coronal curvature than PTN.
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Affiliation(s)
- Mohamed A Gomaa
- Department of Endodontics, Faculty of Dentistry, Mansoura University, Mansoura, Egypt
| | - Mohammad Osama
- Department of Endodontics, Faculty of Dentistry, Mansoura University, Mansoura, Egypt
| | - Amany E Badr
- Department of Endodontics, Faculty of Dentistry, Mansoura University, Mansoura, Egypt
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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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Impact of new cross-sectional designs on the shaping ability of rotary NiTi instruments in S-shaped canals. Odontology 2019; 108:174-179. [PMID: 31446499 DOI: 10.1007/s10266-019-00450-6] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2019] [Accepted: 07/31/2019] [Indexed: 10/26/2022]
Abstract
The aim was to compare the shaping ability of different rotary nickel-titanium instruments in simulated S-shaped canals. One hundred S-shaped canals in resin blocks were prepared to an apical size 25 using F6 SkyTaper (Komet), Silk Files .04, Silk Files .06, Prototypes .04, and Prototypes .06 (all Mani) (20 canals/group). Material removal was measured at 20 measuring points, beginning 1 mm from the endpoint of preparation. Incidence of canal aberrations, preparation time, and instrument failures were also recorded. Statistical analyses were performed using ANOVA, Student-Newman-Keuls and Chi-square test. Pooled data of all measuring points revealed that canals instrumented with Prototypes .04 were significantly better centered than those prepared with all other instruments, while Prototypes .06 and both Silk Files performed significantly better than F6 SkyTaper (p < 0.05). The preparation time differed significantly between all groups and Prototypes .04 allowed the fastest preparation (p < 0.05). There was no statistically significant association between type of instrument and incidence of aberrations (p > 0.05). The cross-sectional design had a marked impact on the shaping ability of the instruments, and less tapered instruments maintained the original canal curvature better than instruments having greater tapers.
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Bennett J, Chung KH, Fong H, Johnson J, Paranjpe A. Analysis of Surface Characteristics of ProTaper Universal and ProTaper Next Instruments by Scanning Electron Microscopy. J Clin Exp Dent 2017; 9:e879-e885. [PMID: 28828154 PMCID: PMC5549585 DOI: 10.4317/jced.54049] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2017] [Accepted: 05/27/2017] [Indexed: 11/28/2022] Open
Abstract
Background Many new rotary files systems have been introduced, however, limited research has been conducted related to the surface irregularities of these files and if these have any effects on the files themselves. Hence, the aim of the present study was to analyze surface irregularities of the ProTaper® Universal rotary files (PTU) and the ProTaper Next™ rotary files (PTN) before and after instrumentation in curved canals. The main objective was to investigate the nature of these irregularities and how they might influence the use and fracture of rotary files during root-canal treatments. Material and Methods The files were examined pre-operatively using a stereomicroscope and scanning electron microscopy(SEM) to analyze surface imperfections and the presence of particles. Mesial roots of forty extracted mandibular molars were selected. Each instrument was used to prepare one of the mesial canals. The files were then rinsed with alcohol, and autoclaved and analyzed again. Results Of the 80 files used in this study, five files fractured, five files unwound and seven files were curved or bent and they all belonged to the PTU group. Irregularities and debris could be visualized with the SEM on both unused PTU and PTN files. Most of the debris was found associated with deeper milling grooves and defects on the surface of the metal. Surface analysis of the files that were used and sterilized were performed and the SEM images demonstrated organic debris, metal flash, and crack formation and initiation of fractures for both file types. All files showed machining grooves, metal flash, debris, and defects on cutting edges. Conclusions These irregularities appear to be critical in the accumulation of debris and initiation of fatigue and crack propagation within the NiTi alloy. The accumulation of debris could be a concern due to the potential exchange of organic debris between patients. Key words:ProTaper® Universal, ProTaper Next™, surface characteristics, SEM.
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Affiliation(s)
- Jeffery Bennett
- Department of Endodontics, University of Washington, Seattle
| | - Kwok-Hung Chung
- Department of Restorative Dentistry, University of Washington, Seattle
| | - Hanson Fong
- Department of Material Science and Engineering, University of Washington, Seattle
| | - James Johnson
- Department of Endodontics, University of Washington, Seattle
| | - Avina Paranjpe
- Department of Endodontics, University of Washington, Seattle
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Alrahabi M. Shaping ability of several nickel–titanium systems in double-curved simulated canals. GIORNALE ITALIANO DI ENDODONZIA 2017. [DOI: 10.1016/j.gien.2017.04.004] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
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Yilmaz A, Kucukay ES, Istektepe M, Sisli SN, Ersev H, Karagoz-Kucukay I. Comparison of the Shaping Ability of WaveOne Reciprocating Files with or without Glide Path in Simulated Curved S-shaped Root Canals. J Int Soc Prev Community Dent 2017; 7:S13-S17. [PMID: 28713762 PMCID: PMC5502546 DOI: 10.4103/jispcd.jispcd_32_17] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2017] [Accepted: 05/16/2017] [Indexed: 11/04/2022] Open
Abstract
OBJECTIVES The aim was to compare the shaping ability of WaveOne reciprocating files with or without glide path in simulated curved S-shaped root canals. MATERIALS AND METHODS Forty ISO #15, 0.02 taper, clear resin Endo Training Bloc-S blocks were studied. The simulated curved S-shaped canals were dyed using ink, preinstrumentation images were scanned, and resin blocks were prepared and divided into Group A: PathFile and WaveOne and Group B: WaveOne. All canals were postoperatively scanned. Pre- and postoperative images were superimposed and evaluated at 12 defined measuring points. The efficacy of the systems was compared based on the amount and direction of canal transportation, centering ability, amount of material removed, and presence of canal aberrations. Mann-Whitney U-test and independent t-test were used for statistical comparison. RESULTS Both systems produced transportation at all levels and straightened the curved S-shaped canals. No significant differences in the amount and direction of transportation and amount of material removed were observed between the groups at each level (P > 0.05). However, Group A had significantly greater centering ability at the coronal straight zone (P = 0.018) and apical curvature (P = 0.014) levels than did Group B. Moreover, Group B showed more canal aberrations than did Group A. CONCLUSION Within the limitations of the present study, the creation of a glide path with the PathFile system improved the centering ability of the WaveOne reciprocating file in the apical and straight coronal portions of the simulated curved S-shaped root canals and reduced the incidence of canal aberrations.
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Affiliation(s)
- Ayca Yilmaz
- Department of Endodontics, Faculty of Dentistry, Istanbul University, Istanbul, Turkey
| | | | | | - Selen Nihal Sisli
- Department of Endodontics, Baskent University, Adana Teaching and Research Center, Adana, Turkey
| | - Handan Ersev
- Department of Endodontics, Faculty of Dentistry, Istanbul University, Istanbul, Turkey
| | - Isil Karagoz-Kucukay
- Department of Endodontics, Faculty of Dentistry, Okan University, Istanbul, Turkey
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Forghani M, Hezarjaribi M, Teimouri H. Comparison of the shaping characteristics of Neolix and Protaper Universal systems in preparation of severely-curved simulated canals. J Clin Exp Dent 2017; 9:e556-e559. [PMID: 28469822 PMCID: PMC5410677 DOI: 10.4317/jced.53476] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2016] [Accepted: 02/01/2017] [Indexed: 11/15/2022] Open
Abstract
Background The aim of this in vitro study was to compare the shaping characteristics of two types of nickel-titanium endodontic file systems with regard to the following parameters: Canal straightening, Canal deviation and Instrumentation time. Material and Methods Fifty severely curved canals simulated in resin blocks were prepared to an apical size 25 using Protaper Universal orNeolix systems (n=25 canals/group). The angle of canal curvature was determined before and after instrumentation. Pre- and post-operative images were superimposed to determine any canal deviation. The instrumentation time was also recorded. The data were statistically analyzed by using independent sample t-test and the Mann-Whitney U-test. Results There were no significant differences between the groups in terms of the change in canal angle (P > 0.05). The Neolix system produced less canal deviation at 7 of the 12 measuring points (p<0.05). The Neolix system also required less instrumentation time (p<0.05). Conclusions Both rotary systems were capable of maintaining the original curvature of the root canal; however, the Neolix system resulted in less canal deviation as well as shorter instrumentation time. Key words:Apical foramen,canal transportation, nickel-titanium instruments, Protaper Universal, root canal preparation.
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Affiliation(s)
- Maryam Forghani
- Dental Materials Research Center, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Maryam Hezarjaribi
- Postgraduate student of Operative Dentistry, Dental Research Center, Mashhad University of Medical Sciences, Mashhad, Iran
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Venino PM, Citterio CL, Pellegatta A, Ciccarelli M, Maddalone M. A Micro–computed Tomography Evaluation of the Shaping Ability of Two Nickel-titanium Instruments, HyFlex EDM and ProTaper Next. J Endod 2017; 43:628-632. [DOI: 10.1016/j.joen.2016.11.022] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2016] [Revised: 11/16/2016] [Accepted: 11/24/2016] [Indexed: 10/20/2022]
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Yahata Y, Masuda Y, Komabayashi T. Comparison of apical centring ability between incisal-shifted access and traditional lingual access for maxillary anterior teeth. AUST ENDOD J 2017; 43:123-128. [PMID: 28084663 DOI: 10.1111/aej.12190] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The aim of this study was to compare the apical centring ability of incisal-shifted access (ISA) with that of traditional lingual access (TLA). Fifteen three-dimensional printed resin models were prepared from the computed tomography data for a human maxillary central incisor and divided into ISA (n = 7), TLA (n = 7) and control (n = 1) groups. After access preparation, these models were shaped to the working length using K-files up to #40, followed by step-back procedures. An apical portion of the model was removed at 0.5 mm coronal to the working length. Microscopic images of each cutting surface were taken to measure the preparation area and the distance of transportation. TLA created a larger preparation area than ISA (P < 0.05). The distance of transportation (mean ± standard deviation) was 0.4 ± 0.1 mm for ISA and 0.7 ± 0.1 mm for TLA (P < 0.05). Access cavity preparation has a significant effect on apical centring ability. ISA is beneficial to maintaining apical configuration.
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Affiliation(s)
- Yoshio Yahata
- Department of Endodontics, School of Dentistry, West Virginia University, Morgantown, West Virginia, USA.,Division of Endodontology, Department of Conservative Dentistry, School of Dentistry, Showa University, Tokyo, Japan
| | - Yoshiko Masuda
- Division of Endodontology, Department of Conservative Dentistry, School of Dentistry, Showa University, Tokyo, Japan
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