Impact of new cross-sectional designs on the shaping ability of rotary NiTi instruments in S-shaped canals

Donnermeyer, David; Viedenz, Anne; Schäfer, Edgar; Bürklein, Sebastian

doi:10.1007/s10266-019-00450-6

Cited by 19 publications

(29 citation statements)

References 24 publications

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“…The use of Jizai resulted in the significantly lowest canal straightening compared to all other instruments (p < 0.05; Table 2), which is in agreement with recently published findings [15]. This excellent shaping ability may be due to unique features of these instruments.…”

Section: Discussionsupporting

confidence: 90%

“…This excellent shaping ability may be due to unique features of these instruments. Firstly, they are manufactured using a proprietary heat treatment [15]. It is well known that heat treatment of NiTi alloys may result in marked improvements of the properties of NiTi instruments [22], such as improved cyclic fatigue resistance [23].…”

Section: Discussionmentioning

confidence: 99%

“…The Silk-files are available in two sequences of instruments, the Silk-Standard (instruments with a constant taper of 6%) and the Silk-Complex (instruments with a constant taper of 4%), whereas the Jizai-instruments have a constant taper of either 4% or 6%. All these instruments are made using a proprietary heat treatment and exhibit unique cross-sectional designs [15] ( Figure 1). The design and the properties of these instruments have been described in detail previously [15].…”

Section: Introductionmentioning

confidence: 99%

“…All these instruments are made using a proprietary heat treatment and exhibit unique cross-sectional designs [15] ( Figure 1). The design and the properties of these instruments have been described in detail previously [15].…”

Section: Introductionmentioning

confidence: 99%

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Shaping Ability and Debris Extrusion of New Rotary Nickel-Titanium Root Canal Instruments

Bürklein¹,

Donnermeyer²,

Hentschel

et al. 2021

Materials

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The aim was to evaluate the canal straightening and the amount of apically extruded debris associated with five rotary nickel-titanium when preparing curved root canals. A total of 100 root canals in extracted human teeth (angles of curvatures 20°–30°; radii 5.9–13.5 mm) were divided into five groups (n = 20/group). The groups were balanced with respect to the angle and the radius of canal curvature. The root canals were prepared using conventional austenite 55-NiTi alloy instruments F360, F6 SkyTaper (both Komet, Lemgo, Germany), and the heat-treated NiTi Jizai, Silk-Complex and Silk-Standard instruments (all Mani, Tochigi, Japan) to an apical size 25. The amount of extruded debris was assessed with a micro balance. Statistical analysis was performed using Kruskal–Wallis test with Bonferroni correction at a significance level of p < 0.05. During canal preparation, neither instrument fractures nor procedural preparation errors were noticed. Regarding canal straightening, the use of Jizai instruments resulted in the significantly lowest straightening (p < 0.05), while no significant differences were obtained between all other groups (p > 0.05). Regarding the amount of apically extruded debris, no significant differences between all groups were obtained (p > 0.05). Within the limitations of this study, all instruments performed well, and especially the Jizai instruments showed an excellent shaping ability.

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Section: Discussionsupporting

confidence: 90%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Shaping Ability and Debris Extrusion of New Rotary Nickel-Titanium Root Canal Instruments

Bürklein¹,

Donnermeyer²,

Hentschel

et al. 2021

Materials

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“…In this study a stereomicroscope was used similar to other studies in this filed (24,25,26,27) . Stereomicroscopy was preferred over other methods because of its low cost, availability, simplicity of use and no risk of radiation exposure.…”

Section: Discussionmentioning

confidence: 99%

The Effect of Different Preparation Times on The Taper and Shape of Simulated Root Canals Using The XP-Endo Shaper Rotary File

kedra¹

2021

Al-Azhar Journal of Dental Science

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Objective: This study evaluated the effect of different preparation times on the taper and shape of simulated root canals using the XP-endo Shaper rotary file. Materials and methods: A total of 54 resin blocks made of clear polyacrylic resin with simulated root canals were used in this study. They were photographed using a built-in camera of a stereomicroscope. They were prepared using the XP-endo Shaper instrument up to the working length (WL) according to the manufacturer's recommendation for 30 seconds (s), 60 s and 90s. Postoperative photographs were performed after canal preparation at each time-point. Then, the registered pre and postoperative datasets were examined to evaluate the canal taper and apical tip diameter. Repeated measures general linear model was used to compare the differences in either the increase or the reduction of the parameters amongst the time-points. Alpha-error was set at 5%. Results: Extending the period of XP-endo Shaper active instrumentation at WL significantly influenced several parameters such as apical tip diameter (P < 0.05) and canal taper (P < 0.05) of the instrumented canal. Conclusions: Extending the activation time of XP endo Shaper instruments at WL resulted in a more comprehensive root canal preparation, increasing the canal taper and the apical tip diameter.

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Bioceramic Materials for Management of Endodontic Complications

Drukteinis

2020

Bioceramic Materials in Clinical Endodontics

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Impact of new cross-sectional designs on the shaping ability of rotary NiTi instruments in S-shaped canals

Cited by 19 publications

References 24 publications

Shaping Ability and Debris Extrusion of New Rotary Nickel-Titanium Root Canal Instruments

Shaping Ability and Debris Extrusion of New Rotary Nickel-Titanium Root Canal Instruments

The Effect of Different Preparation Times on The Taper and Shape of Simulated Root Canals Using The XP-Endo Shaper Rotary File

Bioceramic Materials for Management of Endodontic Complications

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