Predominance of non-Streptococcus mutans bacteria in dental biofilm and its relation to caries progression
| Autor: | Sayed AbdulAzeez, Adel S. Alagl, Sarah Fita, J. Francis Borgio, Fahad A. Al-Harbi, Jehan AlHumaid, Marwa Madi, Doaa M AlEraky, Maha El Tantawi |
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| Rok vydání: | 2021 |
| Předmět: |
biology
QH301-705.5 business.industry Rothia Biofilm Streptococcus Mouth wash Dental Caries biology.organism_classification 16S ribosomal RNA Streptococcus mutans Microbiology Streptococcus sanguinis Medicine Original Article Biology (General) 16S rRNA Antibiotic use General Agricultural and Biological Sciences business Rothia mucilaginosa Bacteria |
| Zdroj: | Saudi Journal of Biological Sciences Saudi Journal of Biological Sciences, Vol 28, Iss 12, Pp 7390-7395 (2021) |
| ISSN: | 1319-562X |
| Popis: | This study aims to assess differences in biofilm bacterial composition between patients with low and high caries. Patients without a medical problem and with no history of antibiotic use, mouth wash or fluoride application in the previous 3 months were recruited. Caries was recorded at cavitation level; score was calculated by a national mean (dmft of 4.8 and DMFT of 2.7). Pooled biofilm samples were collected from mesial, distal, buccal, lingual, and occlusal surfaces. Based on caries experience, individuals were classified into low and high caries and both groups were compared regarding bacteria identified using 16S rRNA gene sequencing, and molecular phylogenetic analysis of the isolates was performed. A total of twenty seven randomly selected samples with low (n = 13) and high (n = 14) caries. Identification of oral bacteria was performed using 16S rRNA sequence, Rothia mucilaginosa and R. aeria were identified in low caries individuals, while R. dentocariosa was detected in high caries individuals. Two Streptococcus spp. were identified only in low caries S. salivarius and S. gordonii whereas S. sanguinis, S. mitis, S. sinensis, S. rubneri, S. vestibularis, S. cristatus and S. massiliensis were identified only in individuals with high caries. This study revealed the absence of R. mucilaginosa in the high caries subjects and its coexistence with the low caries subjects. Streptococcus mutans was insignificant contributor of caries among samples, while, Streptococcus sanguinis was the main constituent of high caries Saudi patients. |
| Databáze: | OpenAIRE |
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