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J Korean Acad Pediatr Dent. 2006;33(3): 388-400.
A STUDY ON THE INFECTION LEVEL OF S. MUTANS AND LACTOBACILLUS AND ITS RELATIVITY WITH CARIES RISK FACTORS IN 18 MONTH-OLD INFANTS
안진공1, 정진2, 정태성1, 김신1
1부산대학교 치과대학 소아치과학교실
2부산대학교 치과대학 구강미생물학교실
Corresponding Author: 김신 ,
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ABSTRACT
The time 18 months after birth is very important for the prevention of early childhood caries because this time is proper to assure the completion of weaning and to perform the diet counseling, and caries process is initiated or actively aggravated under the total influence of feeding pattern from this period. For the purpose of examining the infection status of Streptococcus mutans and Lactobacillus of 18 month old infants and their mothers, and analyzing the correlation between infection status versus various caries-risk factors, this study was performed on the 60 infants of 18 months old and their mothers through the microbiological screening of saliva samples and direct questionnaire to mothers about the caries risk factors. And the results were as follows, 1. The higher the mother's infection level of S. muntans, the higher the infant's infection level and transmission rate. 2. Compared with non-caries group, higher infection level of S. mutans in both infants and mothers and transmission rate were revealed in caries group. 3. The higher the infant's infection level of S. mutans, the higher the caries prevalence and deft values, the less the monthly income of the parents, the longer the period of breast feeding, and the higher the consumption rate of sugared snacks. 4. Most of Lactobacillus infected infants were revealed to be infected also with S. mutans and to have caries. 5. The higher deft value, less parents' monthly income, more frequent daily nursing and more irregular snacking patterns were found among Lactobacillus infected group compared with not-infected group.
Keywords: 18 month-old infant | Mother | Streptococcus mutans | Lactobacillus | Caries risk factors
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