English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

The relationship of the salivary concentration ofStreptococcus mutans and host age to the colonization of this organism on erupting teeth was studied in humans. Plaques were obtained from fissures and buccal surfaces of erupting permanent first and second molars of children 6 to 7 and 11 to 14 years old, respectively. In subjects of both age groups with salivaryS. mutans concentrations below 5 × 102 colony-forming units per ml, the organism was detected on only a few of the tooth surfaces; at concentrations of 5 × 102 to 4.9 × 104 colony-forming units per ml more than half of the surfaces and at concentrations of 5 × 104 colony-forming units per ml or higher most of the surfaces were colonized byS. mutans . The frequency of detection and concentration ofS. mutans in plaque as well as its concentration in saliva were higher in the case of the older children. However, when younger and older children with similar salivaryS. mutans concentrations were compared,S. mutans was more frequently isolated from plaque from older children only in the case of children with below 5 × 102 colony-forming units per ml of saliva. Eleven of the 64 children studied had low or undetectableS. mutans levels in plaque and saliva. The salivaryS. mutans levels of the parents of these children were lower than those of parents of a group of children with normal oralS. mutans levels.

Colonization of Teeth in Humans by Streptococcus mutans as Related to Its Concentration in Saliva and Host Age