Related Experiment Video
Updated: Aug 12, 2026

Oral Biofilm Sampling for Microbiome Analysis in Healthy Children
Published on: December 31, 2017
Dental health of national servicemen in Umeå
Abstract:
The aim of the study was to examine dental health in three groups of national servicemen in Umeå, Västerbotten, to compare the dental health of the groups and to evaluate need for treatment. The material consisted of 282 recruits, 79 from Stockholm County (STHLM group) 96 from the urban parts of the County of Västerbotten (V-urban group) and 107 from the rural parts (V-rural group) of that county. The examination included registration of caries and restorations, gingival status, presence of calculus, pathological pockets and alveolar bone loss. Questions about oral hygiene measures, knowledge about and attitudes to dental health were also included. The results showed that the mean values for DFT and DFS were 13.7 and 24.0 respectively. The mean DFS-value was significantly lower in the V-urban group than in the STHLM group (P less than 0.01) and the V-urban group (P less than 0.001). The mean GBI% was 38.3 in the STHLM group, 32.9 in the V-urban group and 40.4 in the V-rural group. The mean value for surfaces in need of operative treatment was 2.9, with the highest value for the STHLM group (3.5). The mean number of surfaces with initial approximal caries lesions was 2.7. A more prophylactic approach by the military dental services would be desirable, and in future planning the need for dental hygienists should be considered.
Related Concept Videos
Teeth
In the bud stage, the tooth germ (an aggregation of cells) starts to form in the developing jawbone. During the cap stage, the tooth germ differentiates into enamel organ, dental papilla, and dental sac, which will later develop into the tooth's enamel, dentin and...
Tooth Anatomy
The Crown, Neck, and Root
The visible part of the tooth is referred to as the crown. It's covered by enamel, the hardest substance in the human body. The crown is uniquely shaped for each type of tooth, allowing for different functions such as cutting, tearing, or grinding food.
Tonsillitis II: Management
Assessment of the Mouth
Mouth Inspection
The inspection begins with visually examining the mouth for symmetry, color, and size.
The Oral Microbiota

