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The National Dental Service of Sweden was established in 1938. [4] The state of dental health was not well-studied at the time, and cavities were widespread. It was suspected high sugar diets caused tooth decay, but there was no scientific proof. In 1945, the Medical Board commissioned a study on the subject, which would then become the ...
A 1930s poster from the Work Projects Administration promoting oral hygiene. Tooth decay is the most common global disease. [14] Over 80% of cavities occur inside fissures in teeth where brushing cannot reach food left trapped after eating and saliva and fluoride have no access to neutralize acid and remineralize demineralized teeth, unlike easy-to-clean parts of the tooth, where fewer ...
In 1931, the United States Public Health Service established a Dental Hygiene Unit at the National Institutes of Health. Designated as the first dental research worker, Dr. H. Trendley Dean studied the communities affected by the oral disease known as mottled enamel. Following the implementation of a water fluoridation trial in Grand Rapids ...
The issue of sample size for Mokken scaling is largely unresolved. Work using simulated samples and varying the item quality in the scales (Loevinger's coefficient and the correlation between scales) suggests that, where the quality of the items is high that lower samples sizes in the region of 250–500 are required compared with sample sizes ...
While there is tentative benefit from the use of a tongue cleaner it is insufficient to draw clear conclusions with respect to bad breath. [1]Some studies have shown that it is the bacteria on the tongue which often produce malodorous compounds and fatty acids that may account for 80–85% of all cases of bad breath.
The following outline is provided as an overview of and topical guide to dentistry and oral health: . Dentistry – branch of medicine that is involved in the study, diagnosis, prevention, and treatment of diseases, disorders and conditions of the oral cavity, maxillofacial area and the adjacent and associated structures and their impact on the human body.
The recommended frequency of dental hygiene treatment can be made by a registered professional, and is dependent on individual patient needs. [41] Factors that are taken into consideration include an individual's overall health status, tobacco use, amount of calculus present, and adherence to a professionally recommended home care routine.
The following is a partial list of the "N" codes for Medical Subject Headings (MeSH), as defined by the United States National Library of Medicine (NLM).. This list continues the information at List of MeSH codes (N04).