ArticleThe Saudi dental journal2025
Correlation of probiotic consumption with plaque index, salivary pH, and streptococcus mutans: A clinical experimental study.
Article in The Saudi dental journal, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
backgroundSeventy-two percent of 12-year-old children in Indonesia experience dental caries, among 10-14-year-olds is 73%, and in 15-year-olds is 68.5%. Islamic boarding schools (pesantren) are one of the educational institutions in Indonesia, and dental caries status among the school students is moderate to severe. A preventive approach according to ecological balance has been proposed to prevent oral cavity disorders, especially dental caries.
objectivesThis study aimed to investigate the correlation of Lactobacillus reuteri probiotic consumption with plaque index, salivary pH, and Streptococcus mutans quantification.
methodThis research has been done at the Ibnu Hajar boarding school. A total of 40 research subjects aged 12-15 years were allocated into two groups (treatment and control), each consist of 20 subjects. Children in the treatment group took one Lactobacillus reuteri probiotic lozenge daily. Saliva samples of the subjects were taken at baseline and 7th days. Plaque index, salivary pH, and Streptococcus mutans quantification measurements were done before and after consumption of the Lactobacillus reuteri probiotic. Statistical analyses used the T-test and Spearman correlation test.
resultsThere was a significant difference in plaque index, saliva pH, and an insignificant difference in Streptococcus mutans quantification after consuming the probiotics. The correlation coefficient between Lactobacillus reuteri probiotics consumption and plaque index is 0.672, between probiotic consumption and salivary pH is r = 0.433 (p < 0,05), while between probiotic consumption and Streptococcus mutans quantification is 0.162 (p > 0,05).
conclusionA significant correlation between Lactobacillus reuteri probiotic consumption with plaque index and salivary pH was found, but the correlation with Streptococcus mutans quantification was found insignificant.
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