Restorative Dentistry & Endodontics

Research Articles

Root canal volume change and transportation by Vortex Blue, ProTaper Next, and ProTaper Universal in curved root canals: Hyun-Jin Park, Min-Seock Seo, Young-Mi Moon; Restor Dent Endod 2018;43(1):e3. Published online December 24, 2017; DOI: https://doi.org/10.5395/rde.2018.43.e3

Objectives

The aim of this study was to compare root canal volume change and canal transportation by Vortex Blue (VB; Dentsply Tulsa Dental Specialties), ProTaper Next (PTN; Dentsply Maillefer), and ProTaper Universal (PTU; Dentsply Maillefer) nickel-titanium rotary files in curved root canals.

Materials and Methods

Thirty canals with 20°–45° of curvature from extracted human molars were used. Root canal instrumentation was performed with VB, PTN, and PTU files up to #30.06, X3, and F3, respectively. Changes in root canal volume before and after the instrumentation, and the amount and direction of canal transportation at 1, 3, and 5 mm from the root apex were measured by using micro-computed tomography. Data of canal volume change were statistically analyzed using one-way analysis of variance and Tukey test, while data of amount and direction of transportation were analyzed using Kruskal-Wallis and Mann-Whitney U test.

Results

There were no significant differences among 3 groups in terms of canal volume change (p > 0.05). For the amount of transportation, PTN showed significantly less transportation than PTU at 3 mm level (p = 0.005). VB files showed no significant difference in canal transportation at all 3 levels with either PTN or PTU files. Also, VB files showed unique inward transportation tendency in the apical area.

Conclusions

Other than PTN produced less amount of transportation than PTU at 3 mm level, all 3 file systems showed similar level of canal volume change and transportation, and VB file system could prepare the curved canals without significant shaping errors.

Citations

Citations to this article as recorded by

Micro-Computed Tomographic Evaluation of the Shaping Ability of Vortex Blue and TruNatomyTM Ni-Ti Rotary Systems
Batool Alghamdi, Mey Al-Habib, Mona Alsulaiman, Lina Bahanan, Ali Alrahlah, Leonel S. J. Bautista, Sarah Bukhari, Mohammed Howait, Loai Alsofi
Crystals.2024; 14(11): 980. CrossRef
Evaluation of the Centering Ability and Canal Transportation of Rotary File Systems in Different Kinematics Using CBCT
Nupur R Vasava, Shreya H Modi, Chintan Joshi, Mona C Somani, Sweety J Thumar, Aashray A Patel, Anisha D Parmar, Kruti M Jadawala
World Journal of Dentistry.2024; 14(11): 983. CrossRef
Comparative evaluation of nickel titanium rotary instruments on canal transportation and centering ability in curved canals by using cone beam computed tomography: An in vitro study
Krishnaveni Krishnaveni, Nikitha Kalla, Nagalakshmi Reddy, Sharvanan Udayar
Journal of Dental Specialities.2023; 11(2): 105. CrossRef
Comparative Evaluation of Root Canal Centering Ability of Two Heat-treated Single-shaping NiTi Rotary Instruments in Simulated Curved Canals: An In Vitro Study
Preethi Varadan, Chakravarthy Arumugam, Athira Shaji, R R Mathan
World Journal of Dentistry.2023; 14(6): 535. CrossRef
A Comparison of Canal Width Changes in Simulated Curved Canals prepared with Profile and Protaper Rotary Systems
Aisha Faisal, Huma Farid, Robia Ghafoor
Pakistan Journal of Health Sciences.2022; : 55. CrossRef
Evaluation of the Respect of the Root Canal Trajectory by Rotary Niti Instruments (Protaper®Universal): Retrospective Radiographic Study
Salma El Abbassi, Sanaa Chala, Majid Sakout, Faïza Abdallaoui
Integrative Journal of Medical Sciences.2022;[Epub] CrossRef

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Effect of adaptive motion on cyclic fatigue resistance of a nickel titanium instrument designed for retreatment: Taha Özyürek, Koray Yılmaz, Gülşah Uslu; Restor Dent Endod 2017;42(1):34-38. Published online December 19, 2016; DOI: https://doi.org/10.5395/rde.2017.42.1.34

Abstract PDF PubReader ePub

Objectives

The aim of this study was to evaluate the cyclic fatigue resistance of the ProTaper Universal D1 file (Dentsply Maillefer) under continuous and adaptive motion.

Materials and Methods

Forty ProTaper Universal D1 files were included in this study. The cyclic fatigue tests were performed using a dynamic cyclic fatigue testing device, which had an artificial stainless steel canal with a 60° angle of curvature and a 5 mm radius of curvature. The files were randomly divided into two groups (Group 1, Rotary motion; Group 2, Adaptive motion). The time to failure of the files were recorded in seconds. The number of cycles to failure (NCF) was calculated for each group. The data were statistically analyzed using Student's t-test. The statistical significant level was set at p < 0.05.

Results

The cyclic fatigue resistance of the adaptive motion group was significantly higher than the rotary motion group (p < 0.05).

Conclusion

Within the limitations of the present study, the ‘Adaptive motion’ significantly increased the resistance of the ProTaper Universal D1 file to cyclic facture.

Citations

Citations to this article as recorded by

The Effect of Different Separated File Retrieval Strategies on the Biomechanical Behavior of a Mandibular Molar: A Finite Element Analysis Study
Anas Sira, Nawar Naguib Nawar, Shehabeldin Mohamed Saber, Hyeon-Cheol Kim
Journal of Endodontics.2025; 51(1): 64. CrossRef
Evaluatation of two nickle-titanium systems’ (Neolix and X Pro Gold) resistance to fracture after immersion in sodium hypochlorite.
Solmaz Araghi, Abbas Delvarani, Faeze dehghan, Parisa Kaghazloo
journal of research in dental sciences.2024; 21(1): 17. CrossRef
Assessment the impact of operator experience on cyclic fatigue resistance in reciprocating and rotary NiTi files: a comparative study between dental students and pediatric dentistry specialists
Hande Özyürek, Mesut Elbay, Taha Özyürek
Frontiers in Materials.2023;[Epub] CrossRef
Evaluation of gutta-percha removal from the dentinal tubules using different instrumentation techniques with or without solvent: An In vitro study
MukeshKumar Hasija, Babita Meena, Deepti Wadhwa, KulvinderKaur Wadhwani, Virender Yadav
Journal of the International Clinical Dental Research Organization.2020; 12(1): 27. CrossRef
Influences of Continuous Rotation and TF adaptive Motion on the Resistance of Different Retreatment File Systems to Deformation and Fracture: An In Vitro study
Divya Meena, Ramyadharshini LNU, V Nivedha, Anand Sherwood
Journal of Operative Dentistry & Endodontics.2018; 3(2): 71. CrossRef
Comparison of cyclic fatigue life of nickel-titanium files: an examination using high-speed camera
Taha Özyürek, Neslihan Büşra Keskin, Fatma Furuncuoğlu, Uğur İnan
Restorative Dentistry & Endodontics.2017; 42(3): 224. CrossRef

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Original Article

Comparison of shaping ability using various Nickel-Titanium rotary files and hybrid technique: Jung-Won Kim, Jeong-Kil Park, Bock Hur, Hyeon-Cheol Kim; J Korean Acad Conserv Dent 2007;32(6):530-541. Published online November 30, 2007; DOI: https://doi.org/10.5395/JKACD.2007.32.6.530

Abstract PDF PubReader ePub

Currently, various Nickel-Titanium rotary files are used in endodontic treatment, but there is no one perfect system that can be applied to any clinical situation. Therefore, the combined uses of various file systems which can emphasize the advantages of each system are introduced as hybrid instrumentation.

The ProTaper system is efficient in body shaping and apical pre-enlargement but is reported to have more possibility of transportation and produce more aberrations and deformation in more or less severe curved canals. Recently, new ProTaper system (ProTaper Universal) with different configuration and cross-sectional design to overcome the week points of ProTaper have been marketed.

The purpose of this study was to compare and evaluate the shaping abilities of ProTaper, ProTaper Universal system, and two hybrid methods using S-series of ProTaper Universal and Hero Shaper or ProFile.

The time lapses for instrumentation were measured and the used files were inspected for distortion. The pre- and post-instrumented root canals were scanned and superimposed to evaluate the aberrations and reduction of root canal curvature and change of radius of canal curvature. The increased canal width and apical centering ratio were calculated at 1, 2, 3, 4 and 5 mm levels from apical foramen.

Under the conditions of this study, the ProTaper Universal seems to have better shaping ability than ProTaper in terms of instrumented width and instrumentation time. It may be suggested that the ProTaper Universal system is efficient as much as hybrid instrumentation using ProTaper and other constant-tapered NiTi file systems in highly experienced operators.

Citations

Citations to this article as recorded by

A survey of experience-based preference of Nickel-Titanium rotary files and incidence of fracture among general dentists
WooCheol Lee, Minju Song, Euiseong Kim, Hyojin Lee, Hyeon-Cheol Kim
Restorative Dentistry & Endodontics.2012; 37(4): 201. CrossRef
Mechanical and geometric features of endodontic instruments and its clinical effect
Hyeon-Cheol Kim
Journal of Korean Academy of Conservative Dentistry.2011; 36(1): 1. CrossRef

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