Shaping ability of a new heat-treated NiTi system in continuous rotation or reciprocation in artificial curved canals

Rebeiz, Jad; Hachem, Claire El; Osta, Nada El; Habib, Marc; Rebeiz, Tamara; Zogheib, Carla; Kaloustian, Marc Krikor

doi:10.1007/s10266-021-00600-9

Cited by 7 publications

(12 citation statements)

References 35 publications

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“…However, the REvision system showed interesting results in removing filling materials without sonic activation, with 14.02% remnants in the apical third, 8.66% in the middle third, and 19.17% in the coronal third. This may be credited to the cutting efficiency of the Endostar Azure instruments with an S-shaped section [ 11 ], and to their metallurgic properties that combine the enhanced flexibility and controlled memory of martensitic files with the stiffness and hardness of austenitic files. This may also be attributed to anatomical variations.…”

Section: Discussionmentioning

confidence: 99%

“…The Endostar REvision system (Poldent, Warsaw, Poland) is a newly marketed heat retreatment system consisting of three blue files, the 30/.08, 25/.06, and 20/.04, characterized by a modified S-shaped cross-section with two cutting edges. The system has undergone a heat treatment process provided by particularly advanced technology, Azure HT technology, that offers extreme flexibility and great resistance to fracture [ 11 ]. So far, the effectiveness of REvision in the removal of filling materials from oval canals has not yet been evaluated.…”

Section: Introductionmentioning

confidence: 99%

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Effectiveness of the REvision System and Sonic Irrigation in the Removal of Root Canal Filling Material from Oval Canals: An In Vitro Study

et al. 2022

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This study aimed to evaluate the effectiveness of the Endostar REvision system (Poldent, Warsaw, Poland) in the removal of filling materials from oval root canals using sonic irrigation as an additional cleaning method. Thirty human-extracted mandibular premolars with oval canals were prepared using the ProTaper Universal system (Dentsply Maillefer, Ballaigues, Switzerland) up to instrument F1 (20/.07), and then filled by the continuous wave vertical compaction technique using pulp canal sealer EWT (Sybron Dental Specialties, Orange, CA, USA). The teeth were randomly divided into two groups (n = 15) according to the instrumentation system and the additional cleaning method, as follows: REvision (30/.08, 25/.06) with EQ-S sonic activation (Meta Biomed, Chungcheongbuk-do, Korea), REvision (30/.08, 25/.06) without additional activation. All specimens were sectioned longitudinally at 3 and 7 mm from the apex, and analyzed using digital microscopy (KEYENCE, Osaka, Japan) to measure the total area of the residual obturation materials, followed by SEM analysis. The data on the percentage of remaining filling material were analyzed by Kruskal–Wallis one-way Analysis of Variance on ranks. None of the retreatment protocols completely removed the filling material from the root canals (p > 0.05); the retreatment technique using sonic activation showed statistically less residual filling materials than the retreatment technique using irrigants without activation at the coronal third (p < 0.05), whilst no significant difference was found between both tested groups at the apical and middle thirds (p > 0.05). The REvision system showed promising results in the removal of filling materials from oval canals.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Effectiveness of the REvision System and Sonic Irrigation in the Removal of Root Canal Filling Material from Oval Canals: An In Vitro Study

et al. 2022

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“…Simulated resin canals were employed in the present study to standardize the analysis by excluding morphological differences inherent in natural root canals [27]. In particular, simulated resin canals are more suitable for providing standardized evaluation with direct visual comparison of the centering ratio compared with natural root canals [18,28]. Thus, many studies have used resin canals as a valid alternative to natural root canals to investigate torque/force generation [29,30] and canal transportation [31,32] during root canal instrumentation.…”

Section: Discussionmentioning

confidence: 99%

Impact of Radial Lands on the Reduction of Torque/Force Generation of a Heat-Treated Nickel-Titanium Rotary Instrument

et al. 2022

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This study investigated the impact of a one-sided radial-landed cross-sectional design of a heat-treated nickel-titanium rotary instrument (JIZAI, MANI, Japan; JZ) on torque/force generation and canal-shaping ability, using an experimental non-landed instrument (non-landed JZ) for comparison. Both instruments had tip sizes of 25 and 0.04 or 0.06 taper and were similar in metallurgy and geometry, except for the presence/absence of a radial land. Twenty J-shaped simulated resin canals were instrumented in a two-instrument single-length sequence using an automated root canal instrumentation device with a torque/force analyzing unit. Pre- and post-instrumentation images of the resin canals were analyzed for canal-centering ability at 0–3 mm from the apex. The mean centering ratio was not significantly different between JZ and non-landed JZ (p > 0.05). In the 2nd instrumentation, JZ showed a significantly smaller torque compared with the non-landed JZ (p < 0.05). Regardless of instrumentation sequence, JZ showed a significantly smaller maximum upward force, representing screw-in force (p < 0.05), and a larger maximum downward force (p < 0.05) than the non-landed JZ. JZ generated smaller screw-in forces and had similar canal-centering ability compared with the non-landed JZ.

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“…The following criteria were used to determine canal transportation and centering ratio [17]: Three situations were possible:…”

Section: Image Processing and Data Analysismentioning

confidence: 99%

Influence of two kinematics on canal transportation and centering ability of WaveOne Gold and One Curve files

Almazedi,

Al‐Zaka

2023

Aust Endodontic J

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This research examines canal transportation and centering ability of single‐file systems when operated in continuous rotation or reciprocation. Sixty J‐shaped resin blocks were used. The specimens were divided into two main groups (n = 30). Then, based on the motion used to operate the instruments, each group was subdivided into two subgroups (n = 15). Group A1: One Curve/rotation, Group A2: One Curve/clockwise reciprocation, Group B1: WaveOne Gold/Reciprocation, Group B2: WaveOne Gold/counter‐clockwise rotation. Pre‐ and post‐instrumentation images were obtained using digital microscope. Canal transportation was measured at five levels. A non‐significant difference (p > 0.05) resulted between two motions at all levels. However, group A1 showed significantly less transportation at levels 3 and 4 (p ≤ 0.05), also more centered preparation at level 4 (p ≤ 0.05) than group B1. Within the limitations of this study, the apical transportation and centering ability of single‐file systems are unaffected by different kinematics.

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Shaping ability of a new heat-treated NiTi system in continuous rotation or reciprocation in artificial curved canals

Cited by 7 publications

References 35 publications

Effectiveness of the REvision System and Sonic Irrigation in the Removal of Root Canal Filling Material from Oval Canals: An In Vitro Study

Effectiveness of the REvision System and Sonic Irrigation in the Removal of Root Canal Filling Material from Oval Canals: An In Vitro Study

Impact of Radial Lands on the Reduction of Torque/Force Generation of a Heat-Treated Nickel-Titanium Rotary Instrument

Influence of two kinematics on canal transportation and centering ability of WaveOne Gold and One Curve files

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