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혼합치열기 어린이에서 mutans streptococci에 대한 자일리톨 껌의 항균효과에 관한 연구

The anticariogenic effects of xylitol on mutans streptococci in children with mixed dentition

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주제분류치의학

초록

Xylitol 껌의 mutans streptococci(MS)에 대한 항균효과를 평가하기 위하여 6세.11세 사이의 혼합치열기 어린이 62명을 선정하였다. 4개월 동안 1개의 xylitol 껌을 하루 3회 씹는군, 2개의 xylitol 껌을 하루 3회 씹는 군과 xylitol 껌을 씹지 않는 대조군으로 나누어 하루 3번 식후 최소 5분간 껌을 씹게 한 후 1개월 간격으로 자극성타액을 채취하여 선택배지(mitis salivarius kanamicin bacitracin agar)에 배양한 후 MS 군락 수의 감소를 평가하였다. 1회 1개의 xylitol 껌을 씹는 군에서는 MS의 감소를 보이지 않았고, 1회 2개의 xylitol 껌을 씹는 군에서 4개월째 MS의 유의한 감소를 보였다(P < 0.05). 따라서 혼합치열기 어린이의 경우 하루 3회, 총 10g 정도의 xylitol을 4개월 이상 꾸준히 사용하였을 경우 치아우식증에 대한 예방효과가 있을 것으로 사료된다.

Abstract

The purpose of this study was to investigate the effect of xylitol chewing gums on mutans streptococci (MS) counts in saliva. Sixty two children 6 to 11 years old were randomly assigned into one of three groups. Stimulated saliva specimens were plated in duplicate on conventional selective culture (mitis salivarius kanamycin bacitracin agar) for mutans streptococci. Polymerase chain reaction (PCR) amplication was performed to identify MS. After the 4-month period a significant decrease of the MS counts occurred in the group B (two gum 3 times a day; P < 0.05) but not in group A (one gum 3 times a day) and control group (didn’t receive xylitol gum). According to qualitative evaluations, xylitol use did reduce the levels of MS in mixed dentition children. It has been suggested that a daily intake of 2 tablet for 3 times a day (about 10g) is needed in order to obtain a clinical anticariogenic effect.

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