Master's Program in Occupational Health Sciences Safety and Hygiene, ENMH Instituto Politécnico Nacional (Mr Quintal-Méndez, Dr López-Hernández, Dr Sánchez-Monroy); Molecular Biomedicine Laboratory I, ENMH Instituto Politécnico Nacional (Dr Sánchez-Monroy), Department of Research of the National Institute of Respiratory Diseases (Dr Soledad), Mexico City, Mexico.
J Occup Environ Med. 2020 Nov;62(11):930-936. doi: 10.1097/JOM.0000000000001995.
To evaluate the pulmonary alterations in workers from a dental prosthesis laboratory and explore dust and bacterial dissemination generated in the laboratory.
Spirometry and computerized axial tomography were performed on 67 workers. Dust in workplace air was determined using the filtration-gravimetric method, and bacterial detection was explored using 16S rDNA gene sequencing.
Pulmonary alterations were detected in 37% of the workers. Airborne dust concentrations were determined to be higher than the maximum permissible exposure limit, and bacterial detection analysis revealed 23 bacterial genera. The most frequently detected bacterial genus was Sphingomonas sp., which has been described as microbiota associated with disease of the oral cavity.
The results of this study highlight the importance of the implementation of biosecurity measures, improvement of ventilation systems, and routine disinfection of dental impressions.
评估义齿实验室工人的肺部变化，并探讨实验室产生的粉尘和细菌传播。
对 67 名工人进行了肺功能检查和计算机轴向断层扫描。使用过滤重量法测定工作场所空气中的粉尘，并用 16S rDNA 基因测序法探索细菌检测。
37%的工人出现了肺部改变。空气中的粉尘浓度被确定高于最高允许暴露限值，细菌检测分析显示了 23 个细菌属。最常检测到的细菌属是鞘氨醇单胞菌属，它被描述为与口腔疾病相关的微生物群。
本研究结果强调了实施生物安全措施、改善通风系统以及常规消毒牙印的重要性。
