Singla Youginder, Pachar Renu B, Poriya Sangeeta, Mishra Aalok, Sharma Rajni, Garg Anshu
Department of Prosthodontics, Maharaja Ganga Singh Dental College & Research Centre, Sri Ganganagar, Rajasthan, India, Phone: +919814192252, e-mail:
Department of Prosthodontics, Maharaja Ganga Singh Dental College & Research Centre, Sri Ganganagar, Rajasthan, India.
J Contemp Dent Pract. 2018 Mar 1;19(3):296-300.
This study aims to determine the role of mixing techniques of polyether impression materials and efficacy of disinfection on microbial colonization of these impression materials.
Polyether impression material was mixed using two methods: First by hand mixing (group I) and second using an automixer (group II) with a total of 100 samples. Four microbial strains were studied, which included Escherichia coli, Staphylococcus aureus, Pseudomonas aeruginosa, and Candida albicans. After incubation, the bacterial colonies were counted, and then, disinfectant solution was applied. The effect of disinfection solution was evaluated for each specimen.
The surface of polyether impression materials mixed with an automixer has less number of voids and overall a smoother surface as compared with the hand-mixed ones. On comparing the disinfection procedures, i.e., specimens without any disinfection and specimens after disinfection, statistically highly significant difference was seen between all the groups.
We can conclude that impression mixing procedures are important in determining the surface characteristics of the impression and ultimately the colonization of bacteria and also determine the importance of disinfection on microbial colonization.
This study emphasises the deleterious role of nosocomial infections and specific measures that should be taken regarding the prevention of such diseases. Dental impressions are proved to be a source of such infections and may lead to transmission of such diseases. Thus, proper measures should be taken right from the first step of impression taking to minimizing and preventing such kind of contaminations in clinical practice.
本研究旨在确定聚醚印模材料的混合技术的作用以及消毒对这些印模材料微生物定植的效果。
聚醚印模材料采用两种方法混合：第一种是手工混合（第一组），第二种是使用自动混合器（第二组），共100个样本。研究了四种微生物菌株，包括大肠杆菌、金黄色葡萄球菌、铜绿假单胞菌和白色念珠菌。培养后，对细菌菌落进行计数，然后应用消毒溶液。对每个样本评估消毒溶液的效果。
与手工混合的聚醚印模材料相比，使用自动混合器混合的聚醚印模材料表面孔隙较少，总体表面更光滑。在比较消毒程序，即未进行任何消毒的样本和消毒后的样本时，所有组之间在统计学上存在高度显著差异。
我们可以得出结论，印模混合程序对于确定印模的表面特性以及最终细菌的定植很重要，并且还确定了消毒对微生物定植的重要性。
本研究强调了医院感染的有害作用以及应采取的预防此类疾病的具体措施。牙印模被证明是此类感染的一个来源，可能导致此类疾病的传播。因此，从取印模的第一步开始就应采取适当措施，以在临床实践中尽量减少和预防此类污染。
