Stomatology Hospital, School of Stomatology, Zhejiang University School of Medicine, Dental Materials and Devices for Zhejiang Provincial Engineering Research Center, Zhejiang Provincial Clinical Research Center for Oral Diseases, Key Laboratory of Oral Biomedical Research of Zhejiang Province, Cancer Center of Zhejiang University, Hangzhou, China.
PeerJ. 2023 Feb 20;11:e14868. doi: 10.7717/peerj.14868. eCollection 2023.
To systematically evaluate the disinfection efficacy of the two most frequently used disinfectants, sodium hypochlorite and glutaraldehyde, and their effects on the surface properties of four different dental impression materials.
A systematic literature search was performed in four databases until May 1st, 2022 to select the studies which evaluated disinfection efficacy of disinfectants or surface properties of dental impressions after chemical disinfection.
A total of 50 studies were included through electronic database searches. Of these studies, 13 studies evaluated disinfection efficacy of two disinfectants, and 39 studies evaluated their effects on the surface properties of dental impressions. A 10-minute disinfection with 0.5-1% sodium hypochlorite or 2% glutaraldehyde was effective to inactivate oral flora and common oral pathogenic bacteria. With regard to surface properties, chemical disinfection within 30 min could not alter the dimensional stability, detail reproduction and wettability of alginate and polyether impressions. However, the wettability of addition silicone impressions and the dimensional stability of condensation silicone impressions were adversely affected after chemical disinfection, while other surface properties of these two dental impressions were out of significant influence.
Alginate impressions are strongly recommended to be disinfected with 0.5% sodium hypochlorite using spray disinfection method for 10 min. Meanwhile, elastomeric impressions are strongly recommended to be disinfected with 0.5% sodium hypochlorite or 2% glutaraldehyde using immersion disinfection method for 10 min, however, polyether impression should be disinfected with 2% glutaraldehyde.
系统评价两种最常用消毒剂（次氯酸钠和戊二醛）的消毒效果及其对四种不同牙科印模材料表面性能的影响。
系统检索四个数据库，截至 2022 年 5 月 1 日，选择评估消毒剂消毒效果或化学消毒后牙科印模表面性能的研究。
通过电子数据库搜索共纳入 50 项研究。其中，13 项研究评估了两种消毒剂的消毒效果，39 项研究评估了它们对牙科印模表面性能的影响。10 分钟 0.5-1%次氯酸钠或 2%戊二醛消毒可有效灭活口腔菌群和常见口腔致病菌。就表面性能而言，30 分钟内的化学消毒不会改变藻酸盐和聚醚印模的尺寸稳定性、细节再现性和润湿性。然而，加成型硅橡胶印模的润湿性和缩合型硅橡胶印模的尺寸稳定性在化学消毒后受到不利影响，而这两种牙科印模的其他表面性能没有受到显著影响。
强烈建议使用 0.5%次氯酸钠通过喷雾消毒法对藻酸盐印模进行 10 分钟消毒。同时，强烈建议使用 0.5%次氯酸钠或 2%戊二醛通过浸泡消毒法对弹性体印模进行 10 分钟消毒，然而，聚醚印模应使用 2%戊二醛进行消毒。
