Horizontal transmission of streptococcus mutans in schoolchildren

被引：25

作者：

Baca, Pilar ^{[1
]}

Castillo, Ana-M ^{[2
]}

Liebana, M-Julia ^{[1
]}

Castillo, Francisca ^{[1
]}

Martin-Platero, Antonio ^{[2
]}

Liebana, Jose ^{[2
]}

机构：

[1] Univ Granada, Dept Prevent Dent, E-18071 Granada, Spain

[2] Univ Granada, Dept Microbiol, E-18071 Granada, Spain

来源：

MEDICINA ORAL PATOLOGIA ORAL Y CIRUGIA BUCAL | 2012年 / 17卷 / 03期

关键词：

Streptococcus mutans; Horizontal transmission; AP-PCR; genotyping; BRAZILIAN NURSERY CHILDREN; DENTAL-CARIES; GENOTYPIC DIVERSITY; SOBRINUS GENOTYPES; PRESCHOOL-CHILDREN; COLONIZATION; ACQUISITION; ENUMERATION; STRAINS; SALIVA;

D O I：

10.4317/medoral.17592

中图分类号：

R78 [口腔科学];

学科分类号：

1003 ;

摘要：

Objetive: The aim of this study was to analyze possible horizontal transmission patterns of S. mutans among 6-7-yr-old schoolchildren from the same class, identifying genotypes and their diversity and relationship with caries disease status. Study Design: Caries indexes and saliva mutans streptococci and lactobacilli counts were recorded in 42 schoolchildren. Mutans streptococci colonies were identified by means of biochemical tests and all S. mutans strains were genotyped by arbitrarily primed polymerase chain reaction. A child was considered free of S. mutans when it could not be isolated in 3 samples at 1-week intervals. Results: S. mutans was isolated in 30 schoolchildren: 20 having one genotype and 10 two genotypes. Higher mutans streptococci and caries index values were found in those with two genotypes. Five genotypes were isolated in more than 1 schoolchild and one of these was isolated in 3 schoolchildren. Our results suggest that horizontal transmission may take place. Conclusion: Schoolchildren aged 6-7 yrs may be the source of mutual transmission of S. mutans.

引用

页码：E495 / E500

页数：6

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