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使用自调式锉器械进行根管解剖结构的保存，比较使用20/0.02手动锉与20/0.04旋转锉预备的引导通路。

Preservation of root canal anatomy using self-adjusting file instrumentation with glide path prepared by 20/0.02 hand files versus 20/0.04 rotary files.

作者信息

Jain Niharika, Pawar Ajinkya M, Ukey Piyush D, Jain Prashant K, Thakur Bhagyashree, Gupta Abhishek

机构信息

Department of Conservative Dentistry and Endodontics, Hitkarini Dental College and Hospital, Jabalpur, Madhya Pradesh, India.

Department of Conservative Dentistry and Endodontics, D Y Patil Dental School, Pune, Maharashtra, India.

出版信息

J Conserv Dent. 2017 Mar-Apr;20(2):81-85. doi: 10.4103/0972-0707.212231.

DOI:10.4103/0972-0707.212231
PMID:28855752
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC5564249/
Abstract

OBJECTIVES

To compare the relative axis modification and canal concentricity after glide path preparation with 20/0.02 hand K-file (NITIFLEX) and 20/0.04 rotary file (HyFlex™ CM) with subsequent instrumentation with 1.5 mm self-adjusting file (SAF).

MATERIALS AND METHODS

One hundred and twenty ISO 15, 0.02 taper, Endo Training Blocks (Dentsply Maillefer, Ballaigues, Switzerland) were acquired and randomly divided into following two groups ( = 60): group 1, establishing glide path till 20/0.02 hand K-file (NITIFLEX) followed by instrumentation with 1.5 mm SAF; and Group 2, establishing glide path till 20/0.04 rotary file (HyFlex™ CM) followed by instrumentation with 1.5 mm SAF. Pre- and post-instrumentation digital images were processed with MATLAB R 2013 software to identify the central axis, and then superimposed using digital imaging software (Picasa 3.0 software, Google Inc., California, USA) taking five landmarks as reference points. Student's -test for pairwise comparisons was applied with the level of significance set at 0.05.

RESULTS

Training blocks instrumented with 20/0.04 rotary file and SAF were associated less deviation in canal axis (at all the five marked points), representing better canal concentricity compared to those, in which glide path was established by 20/0.02 hand K-files followed by SAF instrumentation.

CONCLUSION

Canal geometry is better maintained after SAF instrumentation with a prior glide path established with 20/0.04 rotary file.

摘要

目的

比较使用20/0.02手动K锉（NITIFLEX）和20/0.04旋转锉（HyFlex™ CM）进行滑行路径预备后，相对轴的改变和根管同心度，随后使用1.5 mm自调式锉（SAF）进行根管预备。

材料与方法

获取120个ISO 15、0.02锥度的根管训练模型（登士柏迈丽费，瑞士巴拉格），随机分为以下两组（每组 = 60）：第1组，使用20/0.02手动K锉（NITIFLEX）建立滑行路径，随后使用1.5 mm SAF进行根管预备；第2组，使用20/0.04旋转锉（HyFlex™ CM）建立滑行路径，随后使用1.5 mm SAF进行根管预备。使用MATLAB R 2013软件处理预备前后的数字图像以确定中心轴，然后使用数字成像软件（Picasa 3.0软件，谷歌公司，美国加利福尼亚州）以五个标志点为参考点进行叠加。采用学生t检验进行两两比较，显著性水平设定为0.05。

结果

与使用20/0.02手动K锉建立滑行路径后再使用SAF进行根管预备的训练模型相比，使用20/0.04旋转锉和SAF进行根管预备的训练模型在根管轴线上的偏差更小（在所有五个标记点处），代表着更好的根管同心度。

结论

在使用20/0.04旋转锉建立初始滑行路径后再使用SAF进行根管预备，能更好地保持根管形态。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5cce/5564249/5e73fce1c55e/JCD-20-81-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5cce/5564249/98b4b9f32954/JCD-20-81-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5cce/5564249/e568ff41e2ee/JCD-20-81-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5cce/5564249/8155af3215ec/JCD-20-81-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5cce/5564249/5e73fce1c55e/JCD-20-81-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5cce/5564249/98b4b9f32954/JCD-20-81-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5cce/5564249/e568ff41e2ee/JCD-20-81-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5cce/5564249/8155af3215ec/JCD-20-81-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5cce/5564249/5e73fce1c55e/JCD-20-81-g005.jpg

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Meant to make a difference, the clinical experience of minimally invasive endodontics with the self-adjusting file system in India.旨在产生影响的印度使用自调式锉系统进行微创牙髓治疗的临床经验。
Indian J Dent Res. 2014 Jul-Aug;25(4):509-12. doi: 10.4103/0970-9290.142552.
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Evaluation of root canal transportation, centering ratio, and remaining dentin thickness associated with ProTaper Next instruments with and without glide path.
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