超声用于清洁不锈钢和镍钛根管器械表面。

The use of ultrasound for cleaning the surface of stainless steel and nickel-titanium endodontic instruments.

作者信息

Filho M T, Leonardo M R, Bonifácio K C, Dametto F R, Silva A B

机构信息

Department of Endodontics, Araraquara School of Dentistry, University of the State of São Paulo, UNESP, Brazil.

出版信息

Int Endod J. 2001 Dec;34(8):581-5. doi: 10.1046/j.1365-2591.2001.00430.x.

DOI:10.1046/j.1365-2591.2001.00430.x

PMID:11762494

Abstract

AIM

The aim of this study was to evaluate the efficacy of ultrasound in cleaning the surface of stainless steel and Ni-Ti endodontic instruments.

METHODOLOGY

Twenty nickel-titanium instruments (10 Quantec files and 10 Nitiflex) and 20 stainless steel K-files (10 Maillefer-Dentsply and 10 Moyco Union Broach) were removed from their original packages and evaluated using a scanning electron microscope. Scores were given for the presence of residues on the surface of the instruments. The instruments were then cleaned in an ultrasonic bath containing only distilled water or detergent solution for 15 min, and re-evaluated, using scanning electron microscopy.

RESULTS

Before cleaning, a greater amount of metallic debris was observed on the nickel-titanium Quantec instruments (P < 0.05), when compared to those made of stainless steel. Statistical analysis showed that the use of ultrasound was effective for cleaning the instruments, regardless of the irrigating solution or the instruments type (P < 0.05).

CONCLUSIONS

The use of ultrasound proved to be an efficient method for the removal of metallic particles from the surface of stainless steel and Ni-Ti endodontic instruments.

摘要

目的

本研究旨在评估超声清洁不锈钢和镍钛根管器械表面的效果。

方法

从原包装中取出20支镍钛器械（10支Quantec锉和10支Nitiflex）以及20支不锈钢K锉（10支Maillefer - Dentsply和10支Moyco Union Broach），使用扫描电子显微镜进行评估。根据器械表面残留情况打分。然后将器械置于仅含蒸馏水或洗涤剂溶液的超声清洗槽中清洗15分钟，再用扫描电子显微镜重新评估。