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使用气粉抛光清洁正畸托槽：对摩擦力和碎屑程度的影响

Cleansing orthodontic brackets with air-powder polishing: effects on frictional force and degree of debris.

作者信息

Leite Brisa Dos Santos, Fagundes Nathalia Carolina Fernandes, Aragón Mônica Lídia Castro, Dias Carmen Gilda Barroso Tavares, Normando David

机构信息

Student at the Multi residence in Maxillofacial Surgery and Traumatology Course, Universidade Federal do Rio de Janeiro (UFRJ), Rio de Janeiro, RJ, Brazil.

Masters degree in Dentistry, Universidade Federal do Pará (UFPA), Graduate Program in Dentistry, Belém, PA, Brazil.

出版信息

Dental Press J Orthod. 2016 Jul-Aug;21(4):60-5. doi: 10.1590/2177-6709.21.4.060-065.oar.

DOI:10.1590/2177-6709.21.4.060-065.oar
PMID:27653265
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC5029317/
Abstract

INTRODUCTION

Debris buildup on the bracket-wire interface can influence friction. Cleansing brackets with air-powder polishing can affect this process.

OBJECTIVE

The aim of this study was to evaluate the frictional force and amount of debris remaining on orthodontic brackets subjected to prophylaxis with air-powder polishing.

METHODS

Frictional force and debris buildup on the surface of 28 premolar brackets were evaluated after orthodontic treatment. In one hemiarch, each bracket was subjected to air-powder polishing (n = 14) for five seconds, while the contralateral hemiarch (n = 14) served as control. Mechanical friction tests were performed and images of the polished bracket surfaces and control surfaces were examined. Wilcoxon test was applied for comparative analysis between hemiarches at p < 0.05.

RESULTS

Brackets that had been cleaned with air-powder polishing showed lower friction (median = 1.27 N) when compared to the control surfaces (median = 4.52 N) (p < 0.01). Image analysis showed that the control group exhibited greater debris buildup (median = 2.0) compared with the group that received prophylaxis with air-powder polishing (median = 0.5) (p < 0.05).

CONCLUSION

Cleansing orthodontic brackets with air-powder polishing significantly reduces debris buildup on the bracket surface while decreasing friction levels observed during sliding mechanics.

摘要

引言

托槽-弓丝界面上的碎屑堆积会影响摩擦力。用气粉抛光清洁托槽会影响这一过程。

目的

本研究的目的是评估经气粉抛光预防性处理的正畸托槽上的摩擦力和残留碎屑量。

方法

在正畸治疗后，评估28个前磨牙托槽表面的摩擦力和碎屑堆积情况。在一侧半牙弓中，每个托槽接受5秒钟的气粉抛光（n = 14），而对侧半牙弓（n = 14）作为对照。进行机械摩擦测试，并检查抛光后的托槽表面和对照表面的图像。采用Wilcoxon检验对p < 0.05的半牙弓之间进行比较分析。

结果

与对照表面（中位数 = 4.52 N）相比，用气粉抛光清洁过的托槽摩擦力较低（中位数 = 1.27 N）（p < 0.01）。图像分析显示，对照组的碎屑堆积量（中位数 = 2.0）大于接受气粉抛光预防性处理的组（中位数 = 0.5）（p < 0.05）。

结论

用气粉抛光清洁正畸托槽可显著减少托槽表面的碎屑堆积，同时降低滑动力学过程中观察到的摩擦力水平。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/4461/5029317/51e857a4d36d/2176-9451-dpjo-21-04-00060-gf4.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/4461/5029317/0d79af8d9289/2176-9451-dpjo-21-04-00060-gf1.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/4461/5029317/f355c98968ba/2176-9451-dpjo-21-04-00060-gf2.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/4461/5029317/16941ca3910b/2176-9451-dpjo-21-04-00060-gf3.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/4461/5029317/51e857a4d36d/2176-9451-dpjo-21-04-00060-gf4.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/4461/5029317/0d79af8d9289/2176-9451-dpjo-21-04-00060-gf1.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/4461/5029317/f355c98968ba/2176-9451-dpjo-21-04-00060-gf2.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/4461/5029317/16941ca3910b/2176-9451-dpjo-21-04-00060-gf3.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/4461/5029317/51e857a4d36d/2176-9451-dpjo-21-04-00060-gf4.jpg

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