Colonization of mutans streptococci in Costa Rican children from a high-risk population

Sylvia Gudiño, Norman Rojas, Cristina Castro, Marianela Rodríguez, Maritza Vega, Lydia M. López

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

Purpose: The aim of the study was to determine the colonization of mutans streptococci (MS) in dental biofilm and saliva of children from a high-risk population with low socioeconomic status from San José, Costa Rica. Methods: A total of 68 healthy babies from 8 to 20 months of age (mean age=13 months), with caries-free status and cariogenic feeding habits (eg, nursing bottle- or breast-feeding on demand) were examined. Children divided in two groups (<13 months and 14-20 months). Samples from dental biofilm and saliva from each subject were processed and plated in blood agar (BA) and Mitis-Salivarius-Bacitracin agar (MSB) to determine MS percentage. Statistical analysis included the analysis of variance test, and stratification by age of MS levels. Results: Detectable MS levels in dental biofilm and saliva were found in 75% and 72% of children, respectively. Counts higher than 20000 colony forming units (CFU) per ml were found in 4% of saliva and in 35% of biofilm samples. The two groups showed significant differences in MS levels for dental biofilm (P=.036) and saliva (P=.009). Children older than 17 months presented higher MS levels (P<.05). Analysis by MS levels (<0.1%; 0.1-1.0%; >1.0% of MS) The two groups showed an insignificant association with increasing mean age. MS density was associated with mean number of erupted primary molars. Conclusions: Mutans streptococci colonization of dental biofilm and saliva from high caries risk infants is associated with age and dental development.

Original languageEnglish
Pages (from-to)36-40
Number of pages5
JournalJournal of Dentistry for Children
Volume74
Issue number1
StatePublished - Jan 1 2007
Externally publishedYes

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Streptococcus mutans
Tooth
Biofilms
Saliva
Population
Bottle Feeding
Costa Rica
Breast Feeding
Social Class
Habits
Nursing

Keywords

  • Colonization
  • Dental biofilm
  • Dental caries
  • Mutans streptococci
  • Saliva

ASJC Scopus subject areas

  • Dentistry(all)
  • Medicine(all)

Cite this

Gudiño, S., Rojas, N., Castro, C., Rodríguez, M., Vega, M., & López, L. M. (2007). Colonization of mutans streptococci in Costa Rican children from a high-risk population. Journal of Dentistry for Children, 74(1), 36-40.

Colonization of mutans streptococci in Costa Rican children from a high-risk population. / Gudiño, Sylvia; Rojas, Norman; Castro, Cristina; Rodríguez, Marianela; Vega, Maritza; López, Lydia M.

In: Journal of Dentistry for Children, Vol. 74, No. 1, 01.01.2007, p. 36-40.

Research output: Contribution to journalArticle

Gudiño, S, Rojas, N, Castro, C, Rodríguez, M, Vega, M & López, LM 2007, 'Colonization of mutans streptococci in Costa Rican children from a high-risk population', Journal of Dentistry for Children, vol. 74, no. 1, pp. 36-40.
Gudiño S, Rojas N, Castro C, Rodríguez M, Vega M, López LM. Colonization of mutans streptococci in Costa Rican children from a high-risk population. Journal of Dentistry for Children. 2007 Jan 1;74(1):36-40.
Gudiño, Sylvia ; Rojas, Norman ; Castro, Cristina ; Rodríguez, Marianela ; Vega, Maritza ; López, Lydia M. / Colonization of mutans streptococci in Costa Rican children from a high-risk population. In: Journal of Dentistry for Children. 2007 ; Vol. 74, No. 1. pp. 36-40.
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