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Evidence: how we grade and cite sources
This page explains which sources the site uses and how claims are linked to them.
This is general information, not a diagnosis. It does not replace a check by a dentist or doctor. If you are worried, contact a dental professional.
Proposed source order (for the editor to confirm)
- International and national health bodies: WHO, THL, NHS, Terveyskylä, Käypä hoito (when available).
- Professional and scientific bodies: EFP, ADA (MouthHealthy), Oral Health Foundation, FDI.
- Systematic reviews and peer-reviewed studies, with DOI links.
- Regulator records for products: for example the FDA device databases.
Proposed rules
- Every factual claim links to a source on the same page.
- We paraphrase. We do not copy text.
- Numbers are only used if the source states them; we name the source and year.
- If evidence is weak or mixed, we say so.
- Each page shows the date sources were last checked.
Käypä hoito (the Finnish Current Care guidelines) and FDI pages could not be opened when these pages were written. They are not cited yet.
Related: Editorial policy
Sources
Paraphrased in plain words. Links checked and accessed 21 Oct 2026.
- World Health Organization. “Oral health – fact sheet”. https://www.who.int/news-room/fact-sheets/detail/oral-health (accessed 21 Oct 2026).
- European Federation of Periodontology. “What is periodontitis?”. https://www.efp.org/for-patients/what-is-periodontitis/ (accessed 21 Oct 2026).
- U.S. Food and Drug Administration. “Artificial intelligence-enabled medical devices”. https://www.fda.gov/medical-devices/artificial-intelligence-enabled-medical-devices/list-artificial-intelligence-enabled-medical-devices (accessed 21 Oct 2026).
- THL – Finnish Institute for Health and Welfare. “Suun ja hampaiden sairaudet (oral and dental diseases data)”. https://thl.fi/data-ja-tilastot/sairaudet-ja-hoidon-laatu/suun-ja-hampaiden-sairaudet (accessed 21 Oct 2026).