Global Disease Population Statistics · Teeth & oral health · 2026-10-18

Oral health: untreated caries & periodontal disease

Click a country on the map or in the ranking to see its prevalence, estimated number of people, and how many know they have it, are treated and are controlled.

Global oral disease population

all ages; caries, periodontal disease, tooth loss, oral cancer combined · 2019 · estimate

Untreated caries, permanent teeth2.5 billion
Severe periodontal disease>1 billion
Complete tooth loss, 60+≈23%
Living in LMICs3 in 4

WHO Global Oral Health Status Report 2022 (based on GBD 2019): almost half the world (45%, about 3.5 billion people) live with oral diseases, up by 1 billion over 30 years; untreated caries of permanent teeth affects about 2.5 billion people — the most common health condition worldwide; severe periodontal disease affects over 1 billion; about 23% of people aged 60+ have lost all their teeth. Country figures (map) are 2019 modelled estimates from WHO GHO oral health country profiles; Taiwan is shown from MOHW oral health surveys with different definitions, so not directly comparable.

Sources: WHO Global oral health status report 2022 · WHO Fact sheet: Oral health (2025-03-17)

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Colour = Untreated caries (permanent teeth):<25%25–32%>32%· Grey = no WHO data for that country (not estimated)

Care gap

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Population prevalence in that country (not shares among patients): untreated caries of deciduous teeth in children aged 1–9, and severe periodontal disease in people 15+ (WHO GHO oral health country profiles, GBD 2019 modelled estimates).

Definition and age band

Prevalence (%) of untreated caries of permanent teeth in people aged 5+; GBD 2019 modelled estimates, WHO Global Oral Health Status Report 2022 country profiles. Taiwan is outside the WHO system and is shown from the MOHW 2021–2023 adult and older-adult oral health survey, which uses different indicators (DMFT, CPI) — not directly comparable.

Sources

Country figures come from the WHO Global Health Observatory (GHO) public API and are modelled estimates (NCD-RisC, WHO hepatitis programme) with differing years; Taiwan is outside the WHO system and is entered manually from HPA/CDC publications, flagged as such. GHO data fetched: 2026-10-18. WHO GHO · ORALHEALTH_UNTREATEDCARIESPERMANENT · ORALHEALTH_UNTREATEDCARIESDECIDUOUS · ORALHEALTH_SEVEREPERIODONTALDISEASE

This page summarises epidemiological statistics and is not individual medical advice; discuss your personal risk with your care team. The content of this article is personal reflection and experience sharing only, and is not medical advice. For any questions about your health, illness or physical care, please seek help through professional medical channels and consult your physician.

Country/territory	Untreated caries (permanent teeth)	Estimated people	Untreated caries, deciduous teeth (1–9 y)	Severe periodontal disease (15+)	Year
Saudi Arabia	38.8%	—	53.2%	10.8%	2019
Turkey	38.6%	—	43.8%	18.9%	2019
France	36.8%	—	29.2%	16.2%	2019
Spain	34%	—	33.2%	6.7%	2019
Russia	32.9%	—	46.9%	19.4%	2019
Germany	31.7%	—	29.1%	27.4%	2019
United Kingdom	30.6%	—	19.5%	10.6%	2019
Egypt	30.4%	—	44.1%	14.2%	2019
Italy	29.6%	—	36.1%	18.2%	2019
Australia	29.5%	—	38.9%	14.5%	2019
Philippines	29.4%	—	45%	3.2%	2019
South Korea	29.3%	—	45.9%	18.2%	2019
India	28.8%	—	43.3%	21.8%	2019
Indonesia	28.8%	—	46.9%	19.6%	2019
Singapore	28.5%	—	41.7%	17.9%	2019
South Africa	27.9%	—	41%	24.8%	2019
Thailand	27%	—	44.7%	19.1%	2019
Brazil	25.9%	—	46.4%	17.5%	2019
Japan	25.8%	—	39.5%	20.6%	2019
Canada	25.1%	—	38.9%	24.7%	2019
Mainland China	24.6%	—	47.2%	17.5%	2019
United States	24.3%	—	42.6%	15.7%	2019
Nigeria	23.9%	—	35.5%	25.1%	2019
Mexico	23.6%	—	44%	22.7%	2019
Malaysia	22.8%	—	44.1%	9.2%	2019
Taiwan ※	—	—	—	—	2021–2023

※ Different definition/age band — not directly comparable with other countries on the map

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