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Influence of glide path size and operating kinetics on time to reach working length and fracture resistance of Twisted File adaptive and Endostar E3 nickel-titanium file systems

Ramyadharshini T, Sherwood IA, Vigneshwar VS, Prince PE, Vaanjay M

Objectives: This study investigated the influence of glide path size and operating kinetics on the time to reach the working length and the fracture resistance of Twisted File (TF) and...
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Effects of reversing the coiling direction on the force-deflection characteristics of nickel-titanium closed-coil springs

Park HH, Jung SH, Yoon J, Jee KK, Han JH, Baek SH

OBJECTIVE: To investigate the effects of reversing the coiling direction of nickeltitanium closed-coil springs (NiTi-CCSs) on the force-deflection characteristics. METHODS: The samples consisted of two commercially available conventional NiTi-CCS groups and...
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The top 10 most-cited articles on the management of fractured instruments: a bibliometric analysis

Mishra L, Kim HC, Singh NR, Rath PP

OBJECTIVES: The purpose of this research was to identify the top 10 most-cited articles on the management of fractured or broken instruments and to perform a bibliometric analysis thereof. MATERIALS AND...
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Evaluation of the alignment efficiency of nickel-titanium and copper-nickel-titanium archwires in patients undergoing orthodontic treatment over a 12-week period: A single-center, randomized controlled clinical trial

Aydın B, Şenışık NE, Koşkan O

OBJECTIVE: The aim of this trial was to compare the alignment efficiency and intermaxillary arch dimension changes of nickel-titanium (NiTi) or copper-nickel-titanium (CuNiTi) round archwires with increasing diameters applied sequentially...
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Comparison of the shaping ability of novel thermally treated reciprocating instruments

Keskin C, Demiral M, Sarıyılmaz E

OBJECTIVES: The present study aimed to evaluate the shaping ability of 2 thermally treated nickel-titanium reciprocating systems in simulated curved canals. MATERIALS AND METHODS: Forty simulated canals were prepared to apical...
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The effect of root canal preparation on the surface roughness of WaveOne and WaveOne Gold files: atomic force microscopy study

Özyürek , Yılmaz K, Uslu G, Plotino G

OBJECTIVES: To examine the surface topography of intact WaveOne (WO; Dentsply Sirona Endodontics) and WaveOne Gold (WOG; Dentsply Sirona Endodontics) nickel-titanium rotary files and to evaluate the presence of alterations...
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Incidence of apical crack formation and propagation during removal of root canal filling materials with different engine driven nickel-titanium instruments

Özyürek , Tek V, Yılmaz K, Uslu G

OBJECTIVES: To determine the incidence of crack formation and propagation in apical root dentin after retreatment procedures performed using ProTaper Universal Retreatment (PTR), Mtwo-R, ProTaper Next (PTN), and Twisted File...
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Comparison of apical extrusion of intracanal bacteria by various glide-path establishing systems: an in vitro study

Dagna A, El Abed R, Hussain S, Abu-Tahun , Visai L, Bertoglio , Bosco F, Beltrami R, Poggio C, Kim HC

OBJECTIVES: This study compared the amount of apically extruded bacteria during the glide-path preparation by using multi-file and single-file glide-path establishing nickel-titanium (NiTi) rotary systems. MATERIALS AND METHODS: Sixty mandibular first...
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The effects of autoclave sterilization on the cyclic fatigue resistance of ProTaper Universal, ProTaper Next, and ProTaper Gold nickel-titanium instruments

Özyürek , Yılmaz K, Uslu G

OBJECTIVES: It was aimed to compare the cyclic fatigue resistances of ProTaper Universal (PTU), ProTaper Next (PTN), and ProTaper Gold (PTG) and the effects of sterilization by autoclave on the...
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Effect of surface treatment on the mechanical properties of nickel-titanium files with a similar cross-section

Kwak SW, Lee JY, Goo HJ, Kim HC

OBJECTIVES: The aim of this study was to compare the mechanical properties of various nickel-titanium (NiTi) files with similar tapers and cross-sectional areas depending on whether they were surface-treated. MATERIALS AND...
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Screw-in forces during instrumentation by various file systems

Ha JH, Kwak SW, Kim SK, Kim HC

OBJECTIVES: The purpose of this study was to compare the maximum screw-in forces generated during the movement of various Nickel-Titanium (NiTi) file systems. MATERIALS AND METHODS: Forty simulated canals in resin...
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Preference of undergraduate students after first experience on nickel-titanium endodontic instruments

Kwak SW, Cheung GS, Ha JH, Kim SK, Lee H, Kim HC

OBJECTIVES: This study aimed to compare two nickel-titanium systems (rotary vs. reciprocating) for their acceptance by undergraduate students who experienced nickel-titanium (NiTi) instruments for the first time. MATERIALS AND METHODS: Eighty-one...
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Effect of repetitive pecking at working length for glide path preparation using G-file

Ha JH, Jeon HJ, Abed RE, Chang SW, Kim SK, Kim HC

OBJECTIVES: Glide path preparation is recommended to reduce torsional failure of nickel-titanium (NiTi) rotary instruments and to prevent root canal transportation. This study evaluated whether the repetitive insertions of G-files...
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Buckling resistance, bending stiffness, and torsional resistance of various instruments for canal exploration and glide path preparation

Kwak SW, Ha JH, Lee W, Kim SK, Kim HC

OBJECTIVES: This study compared the mechanical properties of various instruments for canal exploration and glide-path preparations. MATERIALS AND METHODS: The buckling resistance, bending stiffness, ultimate torsional strength, and fracture angle under...
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Cyclic fatigue resistance tests of Nickel-Titanium rotary files using simulated canal and weight loading conditions

Cho OI, Versluis A, Cheung GS, Ha JH, Hur B, Kim HC

OBJECTIVES: This study compared the cyclic fatigue resistance of nickel-titanium (NiTi) files obtained in a conventional test using a simulated canal with a newly developed method that allows the application...
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Comparison of the centering ability of Wave.One and Reciproc nickel-titanium instruments in simulated curved canals

Lim YJ, Park SJ, Kim HC, Min KS

OBJECTIVES: The aim of this study was to evaluate the shaping ability of newly marketed single-file instruments, Wave.One (Dentsply-Maillefer) and Reciproc (VDW GmbH), in terms of maintaining the original root...
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Influence of glide path on the screw-in effect and torque of nickel-titanium rotary files in simulated resin root canals

Ha JH, Park SS

  • KMID: 2316826
  • Restor Dent Endod.
  • 2012 Nov;37(4):215-219.
OBJECTIVES: The purpose of this study was to investigate the screw-in effect and torque generation depending on the size of glide path during root canal preparation. MATERIALS AND METHODS: Forty Endo-Training...
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A survey of experience-based preference of Nickel-Titanium rotary files and incidence of fracture among general dentists

Lee W, Song M, Kim E, Lee H, Kim HC

  • KMID: 2316824
  • Restor Dent Endod.
  • 2012 Nov;37(4):201-206.
OBJECTIVES: The purpose was to investigate the preference and usage technique of NiTi rotary instruments and to retrieve data on the frequency of re-use and the estimated incidence of file...
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Influence of taper on the screw-in effect of nickel-titanium rotary files in simulated resin root canal

Sung HJ, Ha JH, Kim SK

OBJECTIVES: The introduction of nickel-titanium alloy endodontic instruments has greatly simplified shaping the root canal systems. However, these new instruments have several unexpected disadvantages. One of these is tendency to...
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Influence of root canal curvature on the screw-in effect of nickel-titanium rotary files in simulated resin root canal

Son JY, Ha JH, Kim YK

OBJECTIVES: Nickel-titanium (Ni-Ti) rotary instruments have some unexpected disadvantages including the tendency to screw-in to the canal. The purpose of this study was to evaluate the influence of root canal...
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