中国组织工程研究

中国组织工程研究 ›› 2013, Vol. 17 ›› Issue (42): 7402-7407.doi: 10.3969/j.issn.2095-4344.2013.42.010

• 组织工程口腔材料 tissue-engineered oral materials • 上一篇    下一篇

高压蒸汽灭菌法对两种末端切断钳影响的比较

王  婧1，曹  帅1，王  璞1，张凯亮2，曹宝成1   

  1. 兰州大学口腔医学院，1口腔正畸科，2颌面外科，甘肃省兰州市  730000
  • 收稿日期:2013-04-10 修回日期:2013-04-19 出版日期:2013-10-15 发布日期:2013-10-31
  • 通讯作者: 曹宝成，副教授，兰州大学口腔医院正畸科，甘肃省兰州市 730000 caobch@lzu.edu.cn
  • 作者简介:王婧★，女，1986年生，甘肃省白银市人，汉族，兰州大学口腔医学院在读硕士，主要从事正畸常用合金耐腐蚀性能研究。 RanWong1986@gmail.com
  • 基金资助:

    中央高校基本科研业务费专项资金(lzujbky-2012-161)*；甘肃省自然科学基金(1208RJZA236)*

Effect of high-pressure steam sterilization on two kinds of orthodontic distal end cutters

Wang Jing1, Cao Shuai1, Wang Pu1, Zhang Kai-liang2, Cao Bao-cheng1   

  1. 1Department of Orthodontics, 2Department of Maxillofacial Surgery, School of Stomatology, Lanzhou University, Lanzhou  730000, Gansu Province, China
  • Received:2013-04-10 Revised:2013-04-19 Online:2013-10-15 Published:2013-10-31
  • Contact: Cao Bao-cheng, Associate professor, Department of Orthodontics, School of Stomatology, Lanzhou University, Lanzhou 730000, Gansu Province, China caobch@lzu.edu.cn
  • About author:Wang Jing★, Studying for master’s degree, Department of Orthodontics, School of Stomatology, Lanzhou University, Lanzhou 730000, Gansu Province, China RanWong1986@gmail.com
  • Supported by:

    the Natural Science Funds for Science and Technology in Gansu Province, No. 1208RJZA236*; the Special Funds of Fundamental Research for Central Universities, No. lzujbky-2012-161*

PDF

521

被引次数

4

摘要：

背景：虽然蒸汽灭菌法是口腔临床常用的一种消毒方法，但其是否会对消毒器械产生更明显的影响学术界一直存在着争议。
目的：对比分析高压蒸汽灭菌后两种常用正畸用末端切断钳剪切力值及腐蚀程度的变化，以明确高压蒸汽灭菌法对两种品牌末端切断钳的影响。
方法：取天天、3M牌末端切断钳各15把，均随机分为3组，分别进行高压蒸汽灭菌，高压蒸汽灭菌联合口外剪切，高压蒸汽灭菌联合口内剪切。测量经0，20，40，60次消毒后末端切断钳的剪切力，拍摄金相片并对两种切断钳钳喙进行X射线能谱分析。
结果与结论：随着消毒次数增加，6组切断钳的剪切力值均随之增大，天天末端切断钳3组剪切力的增大程度明显大于对应的3M末端切断钳3组(P < 0.05)。随着消毒次数的增加，两种末端切断钳钳喙均出现了不同程度的腐蚀及磨损，但天天末端切断钳腐蚀范围较大，甚至出现了钳喙缺损。天天末端切断钳中碳元素含量明显高于3M天天末端切断钳(P < 0.05)，铬元素含量低于3M天天末端切断钳(P  < 0.05)；铝、钛元素仅在3M天天末端切断钳中存在。表明高压蒸汽灭菌法对末端切断钳剪切效果及腐蚀均有不良影响，两种品牌相比，3M末端切断钳所受影响较小。

关键词: 生物材料, 组织工程口腔材料, 高压蒸汽灭菌法, 末端切断钳, 剪切力, 腐蚀, 省级基金

Abstract:

BACKGROUND: Steam sterilization is a commonly used oral clinical method of disinfection, but whether it would produce more significant impact on equipments waiting for sterilization has been controversial.
OBJECTIVE: To investigate the effect of autoclave on two kinds of orthodontic distal end cutters by comparing shearing force and corrosion after sterilization.
METHODS: Tiantian (n=15) and 3M (n=15) distal end cutters commonly used in orthodontic treatment were chosen for testing and divided into three groups, respectively. Three groups for each kind of cutter were treated with high-pressure steam sterilization, steam sterilization+extraoral shear, and steam sterilization+intraoral shear, respectively. The shearing force and metallography of the distal end cutters were recorded after 0, 20, 40, and 60 cycles of sterilization. An energy dispersive spectrometer was used to scan the surfaces of the working edges of the distal end cutters after 60 cycles.
RESULTS AND CONCLUSION: It was found that with an increase in the number of sterilization cycles, the shear force and extent of corrosion increased in all six groups of distal end cutters, but the situation was worse for Tiantian cutters than for 3M cutters. It was found that the difference of shear force between the Tiantian autoclave group and 3M autoclave group was statistically significant (P < 0.05) after 20, 40, and 60 sterilization cycles. Meanwhile, the metallography showed that different degrees of discoloration and rust spots appeared on the work edges of the two brands of distal end cutters with an increase in the number of sterilization cycles, but the corrosion of the Tiantian distal-end cutter was more widespread, and even work-edge defects appeared. The carbon content of the Tiantian distal-end cutter was higher than that of the 3M cutter (P < 0.05), but the chromium content was higher in the 3M cutter (P < 0.05). In addition, aluminum and titanium elements only existed in the 3M cutter. The use of the autoclave affected the distal end cutters in terms of shearing force and corrosion, but the effect on 3M distal end cutters was obviously less than that on Tiantian cutters.

Key words: biocompatible materials, sterilization, shear strength, mouth

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