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旋转角度对单根Reci器械力学行为的影响。

Influence of the rotation angles on the mechanical behavior of the one reci instrument.

作者信息

Giess Renaud, Mortier Éric, Delanoë Marie, Hocquel Romain, Martrette Jean-Marc, Balthazard Rémy, Vincent Marin

机构信息

Départment de dentisterie restauratrice et endodontie, Faculté d'odontologie de Lorraine, Université de Lorraine, F-54000, Nancy, France.

ERPI, Université de Lorraine, F-54000, Nancy, France.

出版信息

BDJ Open. 2025 Apr 12;11(1):37. doi: 10.1038/s41405-025-00327-7.

DOI:10.1038/s41405-025-00327-7
PMID:40216749
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC11992025/
Abstract

AIMS

The reciprocity is a complex endodontic kinematic involving many parameters. The most important of these is undoubtedly the selection of clockwise and counterclockwise rotation angles. In this context, the aim of this study was to determine the influence of clockwise and counterclockwise rotation angles on the mechanical properties of 25/0.06 One Reci reciprocity instruments.

METHOD

For this purpose, 5 groups of 10 25/0.06 One Reci instruments were used and each group was associated with a pair of counterclockwise/clockwise rotation angles (CCW/CW). In order to study only one variable at a time, one of the two angles was fixed and the second was increased or decreased. The distribution of angles was as follows: Group 1: 170°/60°; Group 2: 150°/60°; Group 3: 170°/30°; Group 4: 170°/90°; Group 5: 210°/60°. Thanks to a load/unload endodontic protocol carried out on a tensile bench, we quantified for each tested pair of angles (i) the cutting efficiency, (ii) the screwing effect and (iii) the generated torque.

RESULTS

Increasing or decreasing one of the two rotation angles influences the mechanical behavior of the instruments, as does the resulting range. Therefore, our results showed a direct influence of rotation angles on the mechanical behavior of endodontic instruments.

CONCLUSION

This study analyzes the influence of clockwise and counterclockwise rotation angles on the mechanical properties of 25/0.06 One Reci reciprocity instruments. The results of this work tend to demonstrate a direct influence of rotation angles on the mechanical behavior of 25/0.06 One Reci instruments.

摘要

目的

往复运动是一种涉及多个参数的复杂根管治疗运动学过程。其中最重要的无疑是顺时针和逆时针旋转角度的选择。在此背景下，本研究的目的是确定顺时针和逆时针旋转角度对25/0.06 One Reci往复运动器械力学性能的影响。

方法

为此，使用了5组，每组10支25/0.06 One Reci器械，每组与一对逆时针/顺时针旋转角度（CCW/CW）相关联。为了每次仅研究一个变量，将两个角度中的一个固定，另一个角度增大或减小。角度分布如下：第1组：170°/60°；第2组：150°/60°；第3组：170°/30°；第4组：170°/90°；第5组：210°/60°。通过在拉伸试验台上执行的加载/卸载根管治疗方案，我们对每对测试角度量化了（i）切割效率、（ii）旋入效应和（iii）产生的扭矩。

结果

两个旋转角度中的一个增大或减小会影响器械的力学行为，其结果范围也是如此。因此，我们的结果表明旋转角度对根管治疗器械的力学行为有直接影响。

结论

本研究分析了顺时针和逆时针旋转角度对25/0.06 One Reci往复运动器械力学性能的影响。这项工作的结果倾向于证明旋转角度对25/0.06 One Reci器械的力学行为有直接影响。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/a950/11992025/e61e74553c04/41405_2025_327_Fig11_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/a950/11992025/677e93c8e761/41405_2025_327_Fig1_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/a950/11992025/178cf0143420/41405_2025_327_Fig2_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/a950/11992025/4c968d925e54/41405_2025_327_Fig3_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/a950/11992025/c08eda854e76/41405_2025_327_Fig4_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/a950/11992025/c236dac5a2e3/41405_2025_327_Fig5_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/a950/11992025/39d159034134/41405_2025_327_Fig6_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/a950/11992025/d2b1d98d05b1/41405_2025_327_Fig7_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/a950/11992025/658c8ea8f088/41405_2025_327_Fig8_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/a950/11992025/fea8baebf6ad/41405_2025_327_Fig9_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/a950/11992025/6da6312bae3b/41405_2025_327_Fig10_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/a950/11992025/e61e74553c04/41405_2025_327_Fig11_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/a950/11992025/677e93c8e761/41405_2025_327_Fig1_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/a950/11992025/178cf0143420/41405_2025_327_Fig2_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/a950/11992025/4c968d925e54/41405_2025_327_Fig3_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/a950/11992025/c08eda854e76/41405_2025_327_Fig4_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/a950/11992025/c236dac5a2e3/41405_2025_327_Fig5_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/a950/11992025/39d159034134/41405_2025_327_Fig6_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/a950/11992025/d2b1d98d05b1/41405_2025_327_Fig7_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/a950/11992025/658c8ea8f088/41405_2025_327_Fig8_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/a950/11992025/fea8baebf6ad/41405_2025_327_Fig9_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/a950/11992025/6da6312bae3b/41405_2025_327_Fig10_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/a950/11992025/e61e74553c04/41405_2025_327_Fig11_HTML.jpg

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本文引用的文献

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Evaluation of the rotary kinematics between actual and set speeds of X-Smart Plus, VDW.Silver and iRoot motors.评估 X-Smart Plus、VDW.Silver 和 iRoot 机槭在实际转速和设定转速之间的旋转运动。
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Experimental Analysis of the Influence of Heat Treatments on the Flexibility of NiTi Alloy for Endodontic Instruments Manufacturing.
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Materials (Basel). 2023 Apr 28;16(9):3437. doi: 10.3390/ma16093437.
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Reciprocating Kinematics of X-Smart Plus, VDW Silver and, iRoot Endodontic Motors: A Comparison Between Real and Set Values.X-Smart Plus、VDW Silver 和 iRoot 根管马达的往复运动学：实际值与设定值的比较。
Braz Dent J. 2022 Nov-Dec;33(6):28-35. doi: 10.1590/0103-6440202204855.
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