Worldwide, severe gum (periodontal) disease is estimated to affect more than:
Answermore than 1 billion
Poor oral hygiene and tobacco use are the main risk factors.
Source: World Health Organization (2025) who.int
Health · Facts & sources
Dentist facts & stats
5 sourced facts about dental health and dentists, each with the context behind the number. 4 more are in today's round and appear here after it closes.
Going deeper
In the U.S., about what share of adults aged 20–64 have at least one untreated cavity?
Answer21%
Untreated tooth decay remains common even in a high-income country like the U.S.
Source: CDC (2020) cdc.gov
Expert level
Globally, about what share of people aged 60 or older have lost all their natural teeth?
Answer23%
Complete tooth loss is usually the end point of a lifetime of untreated oral disease.
Source: World Health Organization (2025) who.int
In 2022, about how many new cases of oral cavity and lip cancer were diagnosed worldwide?
Answer389,846
Tobacco, alcohol, and areca nut use are among the leading risk factors.
Source: World Health Organization (2022) who.int
Untreated dental disease costs the U.S. about how much in lost productivity each year?
Answerover $45 billion
That estimate covers missed work and reduced productivity linked to dental pain.
Source: CDC (2020) cdc.gov
Think you'd have guessed them?Today's round is four stats like these plus one opinion poll. Your streak and level follow you to every site.Play today's round