우유병 우식증 아동에서 불소와 chlorhexidine양치액의 S.mutans와 Lactobacillus 억제 효과에 관한 실험적 연구 = INHIBITORY EFFECT OF FLUORIDE AND CHLORHEXIDINE MOUTHRINSES ON S.MUTANS AND LACTOBACILLUS IN PRESCHOOL CHILDREN WITH NURSING CARIES

다국어 초록 (Multilingual Abstract)

Nursing caries is a specific form of rampant caries in preschool children. It is characterized by the initiation of upper anterior teeth, the development of primary molars while the usual absence of decay of lower anterior teeth. A causative factors are necessary for nursing caries to occur - host, substrate, microorganism and time.
Removal of this causative factors is mostly effective to prevent nursing caries. The purpose of this study was to evaluate the anticariogenic action toward Streptococcus mutans and Lactobacillus between 3 and 4-year old children with nursing caries. Fifteen subjects (male 8, female 7) were selected, ordered mouthrinsing once a day before going to bed with 0.05% fluoride and 0.1% chlorhexidine solution and plaque from their tooth surface were cultured and the colony was counted.
The results of this study were as follows :
1. Comparing with pretreatment count, in the chlorhexidine-treated and the fluoride-reated group, S.mutans were reduced significantly in the carious and white spot lesion (p＜0.05). While S.mutans level of fluoride-treated group was not significantly different from that of sound tooth surface. (p＞0.05).
2. In the chlorhexidine-treated and the fluoride-treated group, S.mutans levels were recovered to original status after ceasing treatment.
3. In all groups, Lactobacillus were reduced during experimental periods in the carious and sound tooth surface while those of chlorhexidine-treated and fluoride-treated group had a tendency to increase after ceasing treatment.
4. The use of chlorhexidine and fluoride is effective to short-term reduction of S.mutans and lactobacillus in "high risk" children.