中国组织工程研究 ›› 2017, Vol. 21 ›› Issue (2): 171-176.doi: 10.3969/j.issn.2095-4344.2017.02.002

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

不同消毒剂消毒口腔印模效果检测及其对印模尺寸稳定性的影响

武红梅,李长春,江  浩,冯贺强
  

  1. 天津市第五中心医院,天津市  300450
  • 收稿日期:2016-12-13 出版日期:2017-01-18 发布日期:2017-02-27
  • 作者简介:武红梅,女,1971年生,山西省人,汉族,2008年山西医科大学毕业,硕士,主任医师,研究方向为口腔正畸。
  • 基金资助:

    天津市滨海新区卫生局科技项目(2013BWKY008)

Disinfection efficiency of different disinfectants on dental impressions and the dimensional stability of impressions after disinfection

Wu Hong-mei, Li Chang-chun, Jiang Hao, Feng He-qiang
  

  1. the Fifth Central Hospital of Tianjin, Tianjin 300450, China
  • Received:2016-12-13 Online:2017-01-18 Published:2017-02-27
  • About author:Wu Hong-mei, Master, Chief physician, the Fifth Central Hospital of Tianjin, Tianjin 300450, China
  • Supported by:

    the Science and Technology Project of the Binhai New Area Health Bureau of Tianjin, No. 2013BWKY008

摘要:

文章快速阅读:

 


文题释义:
口腔印模
:是用于记录或重现口腔软硬组织外形以及关系的。口腔印模在制取过程中会直接接触到患者的唾液、牙菌斑、甚至血液, 表面可能吸附大量病原微生物, 如消毒不彻底就可能成为乙型肝炎、艾滋病等传染性疾病的感染源, 其污染程度与口腔器械相同。消毒剂应该是有效对抗微生物,对印模尺寸精确度等性能无影响。印模消毒效果评价以灭菌率为指标评价,灭菌率达到99.99%认为消毒合格。
藻酸盐印模材的稳定性:藻酸盐印模是一种弹性不可逆件水胶体印模材料,具有渗润(凝胶因吸收水分而产生的膨胀现象)和凝溢(凝胶因失水而产生的裂隙现象)的特性,而渗润和凝溢都会改变印模的尺寸大小,因此藻酸盐印模材料凝固后的稳定性较差,而消毒后印模的表面精度及体积稳定是临床治疗成败的关键,依照美国牙医协会(American Dental Association,ADA)标准规定,在2%变异范围内认为是临床上可接受的。

背景:在临床工作中,制取口腔印模时必然与患者的唾液、黏膜甚至血液直接接触,印模表面经常附有多种病原微生物,因此,对印模进行消毒灭菌处理不容忽视。
目的:检测戊二醛、二氧化氯、氧化电位水对印模的消毒效果,研究消毒对印模材尺寸稳定性的影响,为建立标准、合理的消毒方法提供依据。
方法:应用戊二醛、二氧化氯、氧化电位水分别对体外人工染菌的藻酸盐印模进行不同时间(5,10,15 min)的浸泡消毒,通过细菌培养、菌落计数检测消毒效果,比较各消毒剂浸泡不同时间的消毒效果,消毒液浸泡后翻制超硬石膏模型,通过高精度结构光扫描,重建三维数字化模型,进行全局偏差测量分析和指标测量,比较不同消毒方法对模型表面精度及尺寸稳定性的影响。
结果与结论:2%碱性戊二醛浸泡5 min对实验菌达到100%杀菌率,浸泡10 min对乙肝病毒有效杀灭;600 ppm二氧化氯浸泡15 min对实验菌达到99%以上杀灭,同时对乙肝病毒有效杀灭;氧化电位水浸泡15 min杀菌率不足99%,对乙肝病毒不能有效杀灭。3种消毒剂浸泡印模不同时间后灌注石膏模型,重建后的三维数字化模型,各组间尺寸变化无统计学差异。提示2%碱性戊二醛浸泡10 min和600 ppm二氧化氯浸泡15 min可以对藻酸盐印模特定染菌达到有效消毒,且消毒对印模尺寸稳定性没有明显影响。

关键词: 生物材料, 口腔生物材料, 消毒, 藻酸盐印模, 戊二醛, 二氧化氯, 氧化电位水, 细菌培养, 石膏模型, 尺寸稳定性

Abstract:

BACKGROUND: The surface of dental impression is inevitable to carry various bacteria caused by direct contact with the patient saliva, mucosa and blood during preparation; therefore, disinfection of the dental impression is necessary.
OBJECTIVE: To evaluate the disinfection efficiency of glutaraldehyde, chlorine dioxide and electrolyzed oxiding water on dental impressions and to investigate the dimensional stability of impressions after disinfection, thus providing basis for establishing a standard and reasonable disinfection method.
METHODS: Alginate impression materials were contaminated in vitro, and then immersed in glutaraldehyde, chlorine dioxide and electrolyzed-oxiding water for 5, 10 and 15 minutes, respectively. The colonies were counted after germiculture to compare the disinfection efficiency of three disinfectants. The impressions were poured in die stone after immersion, the dental models were structured-light scanned and three-dimensional digital dental models were reconstructed. All the data were globally registered, and linear dimensions were measured on the digital models to deduce the influence of disinfection on surface accuracy and dimensional stability of the impressions.
RESULTS AND CONCLUSION: The disinfecting rate reached 100% through immersion in 2% alkaline glutaraldehyde for 5 minutes, and the disinfection of killing the hepatitis B virus was effective after 10-minute immersion. The disinfecting rate of 600 ppm chlorine dioxide for 15 minutes killing experimental bacteria reached 99% and effective for killing the hepatitis B virus. While the disinfecting rate of killing experimental bacteria was less than 99% through immersion in electrolyzed oxiding water for 15 minutes, and was not effective for hepatitis B virus. The three-dimensional digital dental models did not differ significantly. These results suggest that immersion in 2% alkaline glutaraldehyde for 10 minutes or 600 ppm chlorine dioxide for 15 minutes can effectively disinfect alginate impressions and make no significant effect on the dimensional stability.

Key words: Dental Impression Materials, Glutaral, Disinfection, Tissue Engineering

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