Oral malodor was measured using a portable sulphide monitor in 2,672 individuals aged 18 to 64 years. In addition, dental (DMFT) and periodontal conditions (CPITN and attachment loss), dental plaque, and tongue coating status were assessed. Before clinical examination, subjects were interviewed about their oral health habits, smoking habits, and medical history. Data on volatile sulphur compounds (VSC) were analyzed by gender, age group, and time of measurement. There were no significant differences observed in the VSC between males and females in any age group. In each age group, the measured values of oral malodor were highest in the late morning group (58.6 ppb in average), followed by the late afternoon group (52.1 ppb), while lowest values were shown in the early afternoon group (39.4 ppb). Significant correlation was observed only between the VSC value and periodontal conditions and tongue coating status. The results also suggest that oral malodor might be caused mainly by tongue coating in the younger generation and by periodontal diseases together with tongue coating in older cohorts in the general population. Age was not a risk factor for increasing VSC.
Summary. To establish a dental caries preventive programme in 4‐ and 5‐year‐old children, caries activity tests were used to assess salivary levels of mutans streptococci (using the Mucount® test, Showa Yakuhin, Japan) and the acidogenic ability of dental plaque bacteria (using the Cariostat® test, Sankin, Japan) in 260 kindergarten children. The relationships between the results of these two tests and the dental caries experience (dfs) of the children was evaluated. There was a significant positive correlation between the results of the Mucount and Cariostat tests in the total group of subjects. However, 91 subjects (35%) gave conflicting results with the two tests. These subjects were divided into two groups: one group (group B) included Mucount‐negative and Cariostat‐positive subjects, and the other group (group C) included Mucount‐positive and Cariostat‐negative subjects. Group B had a significantly higher mean dfs score than a group that was negative on both tests (group A). On the other hand, no significant difference in mean dfs score was observed between group C and group A. These findings suggested that mutans streptococci levels alone are an insufficient indicator for assessing dental caries activity of children at these ages and that the role of lactobacilli and other aciduric bacteria should be considered. It was concluded that assessment of caries activity using both Mucount and Cariostat tests is useful for a dental caries preventive programme for children of these ages. Resumé. Pour mettre en place un programme de prévention chez des enfants âgés de 4 et 5 ans, des tests d'activité carieuse ont été utilisés pour mesurer le taux de Streptocoques mutans (test Mucocount, Showa Yakuhin Japon) et le pouvoir acidogénique des bactéries de la plaque dentaire (test Cariostat, Sankin, Japon) chez 260 enfants d'écoles maternelles. La corrélation entre les réponses à ces deux tests et le nombre de caries a été étudiée. Cette corrélation était positive de façon significative entre les résultats aux tests Mucount et Cariostat pour les deux groupes. Mais 91 sujets (35%) ont donné des résultats discordants. Ces sujets ont été divisés en deux groupes; un groupe (groupe B) négatif au Mucount et positif au Cariostat et l'autre (groupe C) positif au Mucount et négatif au Cariostat Le groupe B avait obtenu une moyenne plus élevée de l'indice– dfs – de façon significative que le groupe A (négatif aux deux tests) mais aucune différence significative de la moyenne—dfs‐entre les groupes C et A. Ces résultats montreraient que le taux de Streptocoque mutans est un indicateur insuffisant de l'activité carieuse chez les enfants de cet âge et que le rôle des lactobacilles et d'autres bactéries acidogénes devrait être réévalué. En conclusion, les deux tests Cariostat et Mucount doivent être utilisês pour êtablir un programme de prévention chez les enfants de cet âge. Zusammenfassung. Kariesaktivitätproben an 260 Kindergarten Kinder, wurden benutzt, um den Speichelanteil an Mutans Streptokokken (durch Mucount test, Showa Yakuhin...
Aconsciousness survey concerning the demand for and supply of dental care was con ・ ducted among the inhabitants in Miyazaki city having an excess Qf dentists, in Kitagawa − cho having no dentist and in Nichinan city which is the intermediate type between the above two areas . As a result , the inhabitants in Miyazaki city were quantitatively satisfied with the provision of dental care , while there was an extremely high demand for the carc in Kitagawa − cho . In Nichinan city , the degree of satisfaction with the dental care tended to be the same as that in Miyazaki city .
Aconsciousness survey concerning the demand for and supply of dental care was con − ducted among the inhabitants in Nagasaki city having an excess of dentists , in Takashima − cho having no dentist and in Sasebo city which is the intermediate type between the above two areas . As a result , the inhabitants in Nagasaki city were quantitatively satisfied with the provlslQn of dental care , while there was an extremely high demand for the care in Taka − shima − cho . In Sasebo city , the degree of satisfaction with the dental care tended to be the same as that in Nagasaki city ,
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