Mobin Mitra, Borba Cíntia De M, Filho Carlos A M, Tapety Fabrício I, Noleto Iraci De M S, Teles João B M
University of Human Health Sciences and Technology of Piauí - NOVAFAPI, Teresina, PI, Brazil.
Acta Odontol Latinoam. 2011;24(1):86-91.
The aim of this study is to determine the fungal species in the toothbrushes of residents of a neighborhood on the east side of Teresina - PI, and to assess the efficiency of a disinfection method based on 2% sodium hypochlorite. Fifty toothbrushes were divided into two groups: group A comprised 30 toothbrushes used by the residents and group B (control group) 20 new toothbrushes. Fungal evaluation was conducted in Sabouraud culture medium containing chloramphenicol and CHROMagar Candida. Later group A was divided into two subgroups (A1 and A2), which were submitted to disinfection by immersion in 2% sodium hypochlorite and once again screened for the presence of fungi. Seventeen fungal species were identified in group A before the disinfection. Fungal growth was not observed in subgroups A1 and A2, or group B after disinfection. All fungal species isolated from the toothbrushes were considered opportunistic and may cause health problems mainly in immunocompromised patients. The species most frequently found were: Candida albicans, Aspergillus niger, Penicillium citrinum, Geotrichum candidum, Aspergillus fumigatus and Cladosporium oxysporum. Fungal growth did not occur after toothbrush disinfection with 2% sodium hypochlorite, suggesting this is an efficient, low-cost method that can therefore be used by low income populations.
本研究的目的是确定特雷西纳-皮奥伊市东侧一个社区居民牙刷中的真菌种类，并评估基于2%次氯酸钠的消毒方法的效果。五十支牙刷被分为两组：A组由居民使用的30支牙刷组成，B组（对照组）由20支新牙刷组成。在含有氯霉素的沙氏培养基和科玛嘉念珠菌显色培养基中进行真菌评估。之后，A组被分为两个亚组（A1和A2），将其浸入2%次氯酸钠中进行消毒，然后再次筛查真菌的存在情况。消毒前，A组鉴定出17种真菌。消毒后，A1和A2亚组以及B组均未观察到真菌生长。从牙刷中分离出的所有真菌种类均被认为是机会致病菌，主要可能对免疫功能低下的患者造成健康问题。最常见的种类有：白色念珠菌、黑曲霉、桔青霉、念珠地丝菌、烟曲霉和尖孢枝孢菌。用2%次氯酸钠对牙刷进行消毒后未出现真菌生长，表明这是一种高效、低成本的方法，因此低收入人群也可以使用。
