Maternal transmission of mutans streptococci in severe-early childhood caries

Academic Article


  • Purpose: This study utilized multiple genetic analyses to detect evidence of maternal MS acquisition in children with S-ECC. Methods: Twenty-seven mother/child pairs were selected from children with S-ECC preceding dental rehabilitation under general anesthesia. Plaque samples were collected from the mother, child, and the child's carious lesion. Arbitrarily primed-polymerase chain reaction (AP-PCR) genotyped 6-8 MS isolates from each plaque sample, and unique genotypes were identified. Representative MS isolates with unique genotypes were characterized by pulsed-field gel electrophoresis (PFGE). Cluster analysis using the Dice band-based similarity coefficient was used to generate dendrograms from gel banding patterns. A Dice coefficient >70% indicated similarity or match among PFGE genotypes. Results: In 26% (7/27) of mother/child pairs, all of the child's isolates matched the mother. In 15% (4/27), some of the child's genotypes matched the mother, and in 59% (16/27), no isolates matched the mother. Maternal transmission was a mode of MS acquisition in 41% (11/27) of mother/child pairs, while acquisition from non-maternal sources occurred in 74% (20/27). Conclusions: MS genotypes that did not match maternal strains were identified in the majority of children (74%) within this S-ECC population. Evidence of maternal transmission was detected in 41% of mother/child pairs.
  • Published In

    Author List

  • Mitchell SC; Ruby JD; Moser S; Momeni S; Smith A; Osgood R; Litaker M; Childers N
  • Start Page

  • 193
  • End Page

  • 201
  • Volume

  • 31
  • Issue

  • 3