{"title":"刷毛运动对 Reciproc Blue 仪器的动态循环抗疲劳性的影响：体外研究","authors":"","doi":"10.1016/j.joen.2024.06.013","DOIUrl":null,"url":null,"abstract":"<div><h3>Introduction</h3><p>This study aimed to evaluate the dynamic cyclic fatigue resistance of Reciproc Blue files subjected to brushing motion.</p></div><div><h3>Methods</h3><p><span>Twenty Reciproc Blue files (R25, VDW, Munich, Germany) were employed for chemical-mechanical preparation in root canals of 3D printed replicas of mandibular molars. The instruments were divided into two groups (</span><em>n</em> = 10): Group brushing motion, instrumentation with brushing motions; Group without brushing motion , instrumentation without brushing motions. Subsequently, the same instruments underwent cyclic fatigue testing using artificial canals consisting of a stainless-steel plate and an apical segment with a 45° curvature. Data regarding the time to fracture, number of cycles to fracture, and length of the fractured fragment were collected and subjected to statistical analysis using the t-test or Mann-Whitney test, with a significance level of 5%. Additionally, the fractured fragments were examined under a scanning electron microscope.</p></div><div><h3>Results</h3><p>No statistical differences were observed between the groups in terms of time to fracture (<em>P</em> < .05), number of cycles to fracture (<em>P</em> < .05) and length of the fractured fragment (<em>P</em> < .05).</p></div><div><h3>Conclusion</h3><p>The brushing motion did not affect the dynamic cyclic fatigue resistance of Reciproc Blue files.</p></div>","PeriodicalId":15703,"journal":{"name":"Journal of endodontics","volume":null,"pages":null},"PeriodicalIF":3.5000,"publicationDate":"2024-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Influence of the Brushing Motions on the Dynamic Cyclic Fatigue Resistance of the Reciproc Blue Instrument: In vitro Study\",\"authors\":\"\",\"doi\":\"10.1016/j.joen.2024.06.013\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><h3>Introduction</h3><p>This study aimed to evaluate the dynamic cyclic fatigue resistance of Reciproc Blue files subjected to brushing motion.</p></div><div><h3>Methods</h3><p><span>Twenty Reciproc Blue files (R25, VDW, Munich, Germany) were employed for chemical-mechanical preparation in root canals of 3D printed replicas of mandibular molars. The instruments were divided into two groups (</span><em>n</em> = 10): Group brushing motion, instrumentation with brushing motions; Group without brushing motion , instrumentation without brushing motions. Subsequently, the same instruments underwent cyclic fatigue testing using artificial canals consisting of a stainless-steel plate and an apical segment with a 45° curvature. Data regarding the time to fracture, number of cycles to fracture, and length of the fractured fragment were collected and subjected to statistical analysis using the t-test or Mann-Whitney test, with a significance level of 5%. Additionally, the fractured fragments were examined under a scanning electron microscope.</p></div><div><h3>Results</h3><p>No statistical differences were observed between the groups in terms of time to fracture (<em>P</em> < .05), number of cycles to fracture (<em>P</em> < .05) and length of the fractured fragment (<em>P</em> < .05).</p></div><div><h3>Conclusion</h3><p>The brushing motion did not affect the dynamic cyclic fatigue resistance of Reciproc Blue files.</p></div>\",\"PeriodicalId\":15703,\"journal\":{\"name\":\"Journal of endodontics\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":3.5000,\"publicationDate\":\"2024-09-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Journal of endodontics\",\"FirstCategoryId\":\"3\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S0099239924003947\",\"RegionNum\":2,\"RegionCategory\":\"医学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"DENTISTRY, ORAL SURGERY & MEDICINE\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of endodontics","FirstCategoryId":"3","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0099239924003947","RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"DENTISTRY, ORAL SURGERY & MEDICINE","Score":null,"Total":0}
引用次数: 0
摘要
简介：本研究旨在评估Reciproc® Blue锉在刷牙运动中的动态循环抗疲劳性：采用20支Reciproc® Blue锉（R25，VDW，德国慕尼黑）对3D打印的下颌磨牙复型根管进行化学机械预备。器械分为两组（n=10）：BM 组，带刷毛运动的器械；WBM 组，不带刷毛运动的器械。随后，使用由不锈钢板和45°弧度的根尖段组成的人工根管对相同的器械进行了循环疲劳测试。收集了有关断裂时间、断裂循环次数（NCF）和断裂碎片长度的数据，并使用 t 检验或 Mann-Whitney 检验进行统计分析，显著性水平为 5%。此外，还在扫描电子显微镜下对断裂碎片进行了检查：结果：在骨折时间方面，各组之间没有统计学差异（p）：刷牙运动不会影响 Reciproc Blue 锉刀的动态循环抗疲劳性。
Influence of the Brushing Motions on the Dynamic Cyclic Fatigue Resistance of the Reciproc Blue Instrument: In vitro Study
Introduction
This study aimed to evaluate the dynamic cyclic fatigue resistance of Reciproc Blue files subjected to brushing motion.
Methods
Twenty Reciproc Blue files (R25, VDW, Munich, Germany) were employed for chemical-mechanical preparation in root canals of 3D printed replicas of mandibular molars. The instruments were divided into two groups (n = 10): Group brushing motion, instrumentation with brushing motions; Group without brushing motion , instrumentation without brushing motions. Subsequently, the same instruments underwent cyclic fatigue testing using artificial canals consisting of a stainless-steel plate and an apical segment with a 45° curvature. Data regarding the time to fracture, number of cycles to fracture, and length of the fractured fragment were collected and subjected to statistical analysis using the t-test or Mann-Whitney test, with a significance level of 5%. Additionally, the fractured fragments were examined under a scanning electron microscope.
Results
No statistical differences were observed between the groups in terms of time to fracture (P < .05), number of cycles to fracture (P < .05) and length of the fractured fragment (P < .05).
Conclusion
The brushing motion did not affect the dynamic cyclic fatigue resistance of Reciproc Blue files.
期刊介绍：
The Journal of Endodontics, the official journal of the American Association of Endodontists, publishes scientific articles, case reports and comparison studies evaluating materials and methods of pulp conservation and endodontic treatment. Endodontists and general dentists can learn about new concepts in root canal treatment and the latest advances in techniques and instrumentation in the one journal that helps them keep pace with rapid changes in this field.
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