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Relationship between Interdental Spacing and Colonization by Streptococcus mutans in Children
Takuro Yonezu1, Seikou Shintani1
1Department of Pediatric Dentistry, Tokyo Dental College.
The Bulletin of Tokyo Dental College
|July 21, 2017
Summary
Children with upper incisor spacing had lower Streptococcus mutans colonization. Early cessation of breast/bottle feeding also reduced S. mutans, suggesting key factors for early childhood oral health.
Area of Science:
- Pediatric Dentistry
- Microbiology
- Public Health
Background:
- Streptococcus mutans is a primary agent in early childhood caries.
- Understanding factors influencing S. mutans colonization is crucial for prevention.
Purpose of the Study:
- To examine the association between upper incisor interdental spacing and S. mutans colonization in young children.
- To investigate other factors like diet and feeding habits related to S. mutans colonization.
Main Methods:
- Study included 47 children aged 24-36 months without cavities.
- Interdental spacing was assessed using models.
- Saliva samples were analyzed for S. mutans presence.
Main Results:
- S. mutans was detected in 29.8% of children.
- Children with interdental spacing showed significantly less S. mutans colonization (15.8%) compared to those without (39.3%).
- Early cessation of breast/bottle feeding (by 15 months) was linked to lower S. mutans rates.
Conclusions:
- Upper incisor interdental spacing may be a protective factor against S. mutans colonization.
- Weaning by 15 months is associated with reduced S. mutans colonization.
- These findings offer insights into early childhood caries prevention strategies.

