Publication: Prevalence of five biofilm-related oral streptococci species from plaque
Issued Date
2011-01-01
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ISSN
10534628
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2-s2.0-84860616378
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Mahidol University
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SCOPUS
Bibliographic Citation
Journal of Clinical Pediatric Dentistry. Vol.36, No.2 (2011), 161-166
Suggested Citation
Kemthong Mitrakul, Yuwadee Asvanund, Kudkao Vongsavan Prevalence of five biofilm-related oral streptococci species from plaque. Journal of Clinical Pediatric Dentistry. Vol.36, No.2 (2011), 161-166. doi:10.17796/jcpd.36.2.d7r750u227j85813 Retrieved from: https://repository.li.mahidol.ac.th/handle/123456789/11838
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Title
Prevalence of five biofilm-related oral streptococci species from plaque
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Abstract
Objective: To examine the prevalence of five oral streptococci species of severe early childhood caries (S-ECC) and caries-free (CF) groups. Study design: Supra gingival plaque samples were obtained from 198 Thai children with ages ranging from one to six years old. Eighty-seven subjects had no caries (dmft=0), and 111 had S-ECC. After DNA extraction, S. mutans, S. sobrinus, S. sanguinis, S. oralis, and S. gordonii were identified by standard PCR using species-specific primers. Statistical analysis determined the differences among prevalence rates of each species using Pearson chi-square test. The relationship among dmft score, age, sex and caries status within each group was analyzed by logistical regression (p 0.05). Results: Sex was not correlated with any of the species detected in both groups (mean age =3.09, mean±SD of dmft=11.04±7.89). S. mutans was found at greatest prevalence in both groups followed by S. oralis. S. gordonii was detected at a high prevalence, but S. sobrinus and S. sanguinis were lower in S-ECC when compared with those from the CF group. Conclusion: S. mutans was associated significantly with S-ECC (p 0.05). Caries prevalence was highest (56.5%) in subjects infected by S. mutans alone. S. sanguinis prevalence was higher in the CF group, but not statiscally different. Infection with MS did not show higher caries prevalence.