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Table of Contents
Vol. 37, No. 5, 2003
Issue release date: September – October
Section title: Original Paper
Caries Res 2003;37:374–380
(DOI:10.1159/000072171)

Detection of Streptococcus mutans and Streptococcus sobrinus on the Permanent First Molars of the Mosuo People in China

Wu H.a · Fan M.a · Zhou X.b · Mo A.b · Bian Z.a · Zhang Q.a · Chen Z.a
aDepartment of Endodontics, School and Hospital of Stomatology, Wuhan University, Wuhan, and bDepartment of Endodontics, West China College of Stomatology, Sichuan University, Chengdu, PR China

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Article / Publication Details

First-Page Preview
Abstract of Original Paper

Received: September 04, 2002
Accepted: March 19, 2003
Published online: August 27, 2003
Issue release date: September – October

Number of Print Pages: 7
Number of Figures: 2
Number of Tables: 3

ISSN: 0008-6568 (Print)
eISSN: 1421-976X (Online)

For additional information: http://www.karger.com/CRE

Abstract

Streptococcus mutans and Streptococcus sobrinus are associated with the development of dental caries. The purpose of this study was to differentiate these bacteria by morphology, biochemical characteristics and PCR, and to compare their occurrence with the prevalence of dental caries in the Mosuo people. Plaque samples were collected from the permanent first molar in 126 Mosuo people (83 females, 43 males, aged 25–55 years, average age 36.1 ± 7.73). Dental status was recorded as DMFT by WHO caries diagnostic criteria. Males had a significantly lower prevalence of caries and DMFT than females: 11.4 vs. 86.9% and 1.65 vs. 6.95, respectively (p < 0.001). Morphological and biochemical tests gave unreliable results. The prevalence of S. mutans and S. sobrinus was 75.4 and 57.1%, respectively. 26.5% of females and 53.5% of males were positive for S. mutans alone, 18.1% of females and 16.3% of males were positive for S. sobrinus alone, while 50.6% of females and 18.6% of males were positive for both S. mutans and S. sobrinus and4.8% of females and 11.6% of maleswere negative for bothspecies. The DMFT scores of subjects positive for both S. mutans and S. sobrinus were significantly higher than of those positive for either S. mutans or S. sobrinus alone. These results indicate that subjects harboring both S. mutans and S. sobrinus have a significantly higher prevalence of dental caries than those with S. mutans or S. sobrinus alone.

© 2003 S. Karger AG, Basel


Article / Publication Details

First-Page Preview
Abstract of Original Paper

Received: September 04, 2002
Accepted: March 19, 2003
Published online: August 27, 2003
Issue release date: September – October

Number of Print Pages: 7
Number of Figures: 2
Number of Tables: 3

ISSN: 0008-6568 (Print)
eISSN: 1421-976X (Online)

For additional information: http://www.karger.com/CRE


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