Erratum to: Cutting efficiency of nickel–titanium rotary and reciprocating instruments after prolonged use

Gambarini, Gianluca; Rubini, Alessio Giansiracusa; Sannino, Gianpaolo; Giorgio, Gianni Di; Piasecki, Lucila; Al-Sudani, Dina; Plotino, Gianluca; Testarelli, Luca

doi:10.1007/s10266-014-0193-y

Cited by 2 publications

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“…Adaptive motion and continuous rotation have similar cutting ability. [21] This might be an explanation for the results of the present study.…”

Section: Discussionsupporting

confidence: 59%

Effect of movement kinematics on canal transportation: reciprocation with different angles, adaptive motion, and continuous rotation

Karataş¹

2016

Turk Endod J

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C leaning and shaping are the most important steps of a root canal treatment that aims removing debris and microorganisms which are responsible for endodontic pathosis from the root canals. [1] Root canal preparation should present a flare shape from apical to coronal, maintaining the apical foramen in its original spatial relationship to the periapical tissues and to the root surface, and not changing the original canal curvature. [2] However, in curved canals, iatrogenic errors, such as ledges, zips, perforations, and root canal transportation, might occur because there is a tendency for all preparation techniques and instruments to divert the prepared canal away from its original axis. [3,4] Canal transportation increases the risk of blockage, perforation, and ledge creation, may weaken the root structure, and may compromise the obturation of the root canal system, resulting in a poor apical seal. [5] Objective: The aim of this study was to compare canal transportation in mesiobuccal root canals of extracted human mandibular molars instrumented with Twisted File Adaptive instruments with different kinematics.Methods: A total of 60 extracted human permanent mandibular first molars with curved mesial root canals (250.05). The data for the centering ratio showed that there was no significant difference among the tested groups after instrumentation in each section of the root canal (p>0.05). Conclusion:The TF Adaptive instruments produced similar canal transportation and centering ratio when used with different movement kinematics.

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“…Adaptive motion and continuous rotation have similar cutting ability. [21] This might be an explanation for the results of the present study.…”

Section: Discussionsupporting

confidence: 59%

Effect of movement kinematics on canal transportation: reciprocation with different angles, adaptive motion, and continuous rotation

Karataş¹

2016

Turk Endod J

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“…Different from traditional NiTi instruments processed and formed in the A style, Wave One and Reciproc files are processed and formed in the M style. The 3-mm tip has a larger taper and the upper taper is smaller, which enhances metal elasticity and fatigue resistance (2). Besides this, different from the continuous rotation movement in 360 degrees of traditional NiTi instruments, the reciprocating motion in which the clockwise rotation angle is more significant than the counterclockwise rotation enhances the fatigue resistance of the metal, reducing the risk of breaking during working, and also leads the file to the tooth's apex (14,15).…”

Section: Discussionmentioning

confidence: 99%

“…Traditionally, hand tools such as the H file are used to remove gutta-percha. Further developments include the mechanical Mtwo R and Reciproc files, nickeltitanium (NiTi) endodontic instruments used for singlefile root canal preparation (2,3). The Mtwo R files were designed for gutta-percha removal (4).…”

Section: Introductionmentioning

confidence: 99%

The efficacy of different instruments combined with Nd:YAP in endodontic retreatment

Zhu¹

2021

Ann Transl Med

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Background: To evaluate the efficiency of endodontic retreatment using different instruments and observe whether the Nd:YAP laser can assist.Methods: Eighty premolars were selected, of which the root canals were prepared, and were filled with both gutta-percha and AH plus. The teeth were randomly divided into eight groups, respectively using and not using the Nd:YAP laser with the use of H files, Reciproc files, Mtwo R files, and Mtwo R + H files to remove the root-canal filling material. The retreatment time of each sample was recorded, and the amount of residual gutta-percha was calculated by Image J.Results: (I) In the four no-Nd:YAP laser groups, the Mtwo R group and Reciproc group took the least time, and there was no statistical difference between them (P>0.05). The Mtwo R + H file group took longer than the Mtwo R group and Reciproc group (P<0.05). The H file group took the longest time (P<0.05). (II)In the Nd:YAP laser group, the H file group took the longest time (P<0.05), and there were no significant statistical difference between the other three groups (P>0.05). (III) The Nd:YAP laser groups took a longer time than the no-Nd:YAP laser groups (P<0.05). (IV) All of the groups had residues. (V) The residues in the Mtwo R + H files group and the Reciproc group were the least among the four groups (P<0.05), and the residues in the Mtwo R group were the most (P<0.05). (VI) The residues in the Mtwo R and H file groups of the Nd:YAP laser groups were less than those of the no-Nd:YAP laser groups (P<0.05), and the residues in the Reciproc and the Mtwo R + H file groups of the Nd:YAP laser group showed no statistical difference with that of the no-Nd:YAP laser group (P>0.05).Conclusions: None of the experimental methods could altogether remove the root-filling material.The Nd:YAP laser could assist, but the procedure still took a long time and the efficiency of endodontic retreatment was limited. Using the Mtwo R + H or Reciproc file was the most efficient.

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Erratum to: Cutting efficiency of nickel–titanium rotary and reciprocating instruments after prolonged use

Cited by 2 publications

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Effect of movement kinematics on canal transportation: reciprocation with different angles, adaptive motion, and continuous rotation

Effect of movement kinematics on canal transportation: reciprocation with different angles, adaptive motion, and continuous rotation

The efficacy of different instruments combined with Nd:YAP in endodontic retreatment

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