摘要:

Twenty 17-year-old schoolchildren were selected for the study because of high salivary counts of Streptococcus mutans 106 CFU/ml) and a frequent intake of sugars between meals. After a baseline determination of the numbers of S. mutans and lactobacilli in saliva, and of S. mutans in interdental plaque, the subjects were asked to avoid sugar-containing between-meal products, e. g. sweets, chewing gum, soft drinks and confectionery, and to eat a maximum of 4–5 meals/day. After 6 weeks of sugar restriction, the participants were allowed to return to their former food habits and were then followed for a further 6-week period. Seven subjects, also with high salivary counts of S. mutans and a frequent sugar consumption, served as control group. The results showed a statistically significant decrease of mean salivary S. mutans counts from 1.5 × 106 to 0.3 × 106 CFU/ml (p < 0.001) during the sugar restriction period. The mean number of lactobacilli in saliva decreased from 2.3 × 104 to 0.2 × 104 CFU/ml (p < 0.001). Regarding the interdental plaque samples, the number of tooth surfaces with detectable S. mutans were reduced from 52 to 32% (p < 0.001). When the subjects returned to their former food habits, the S. mutans and lactobacillus values almost reached the baseline level again. No obvious changes were found in the control group for any of the studied variables. To conclude, the 6-week period with sugar restriction reduced the number of S. mutans both in saliva and in interproximal spaces. Also the lactobacillus counts in saliva decr

ISSN:0008-6568    

DOI:10.1159/000261005

出版商:S. Karger AG    

年代:1987

数据来源: Karger

摘要:

The purpose of the present study was to quantify changes in the size of approximal carious lesions in order to find out the effect of sucrose or xylitol consumption on the rate of caries progression. The projections of approximal lesions on bite-wing radiographs were analysed planimetrically. Evaluation of the data showed a highly significant increase of approximal lesion size in the sucrose group; in the xylitol group lesion sizes remained unchanged. The corresponding difference in lesion size between the xylitol and sucrose groups after the 2-year study period was highly significant (p < 0.001). It is concluded that sucrose consumption ad libitum enhances the further progress of carious lesions, whereas xylitol consumption favours the arrest and decrease of the lesions.

ISSN:0008-6568    

DOI:10.1159/000261006

出版商:S. Karger AG    

年代:1987

数据来源: Karger

ISSN:0008-6568    

DOI:10.1159/000261007

出版商:S. Karger AG    

年代:1987

数据来源: Karger

ISSN:0008-6568    

DOI:10.1159/000261008

出版商:S. Karger AG    

年代:1987

数据来源: Karger