---
title: "Fun and Interesting Facts about Dentistry & Teeth"
url: "https://www.newmouth.com/resources/facts-about-dentistry/"
description: "Facts at a Glance Wondering what's actually true about dental health? These quick-hit facts summarize the state of mouths across the U.S. and around the world. Tooth decay affects 2.5 billion people globally as of 2022. Just 32% of U.S. 8-year-olds have protective sealants on their molars. 13.8% of U.S. adults..."
---

## 2026 Facts at a Glance

Wondering what’s actually true about dental health? These quick-hit facts summarize the state of mouths across the U.S. and around the world.

-   Tooth decay affects 2.5 billion people globally as of 2022.
-   Just 32% of U.S. 8-year-olds have protective sealants on their molars.
-   13.8% of U.S. adults aged 65 and up have lost all their natural teeth.
-   Only 44.2% of Americans visited a dentist in 2021.
-   Dental hygienists earned a median salary of $94,260 in 2026.
-   Women made up nearly 40% of all practicing U.S. dentists in 2026.
-   Water fluoridation still helps—but less than it used to.
-   The FDA added warning labels to amalgam fillings in 2025.

## What Counts as a Cavity?

-   Tooth decay is the most common health condition on Earth, impacting 2.5 billion people in 2022.
-   In 2020, 55% of U.S. eight-year-olds had already experienced tooth decay.
-   Untreated cavities affected 18% of eight-year-olds in that same survey year.
-   Cavities are caused by acid-producing bacteria that feed on sugars and weaken enamel over time.
-   The technical term for tooth decay is “dental caries”—they’re chronic, not just a kid thing.

## Gum Disease Facts

-   Gum disease begins with gingivitis and can progress to periodontitis, which damages bone.
-   In 2020, 13.8% of adults aged 65 and older had no natural teeth left, largely due to gum disease or decay.
-   Periodontitis is more common in smokers and people with diabetes.
-   Advanced gum disease has been linked to systemic conditions like heart disease and Alzheimer’s, though causation is unclear.
-   Most gum disease is preventable with daily brushing, flossing, and regular cleanings.

## Everyday Prevention Facts

-   Brushing twice a day with fluoride toothpaste reduces your risk of cavities by about 25%.
-   Flossing or using interdental brushes helps remove plaque that your toothbrush can’t reach.
-   Skipping meals may raise cavity risk by lowering saliva production, which helps neutralize acids.
-   Staying hydrated supports saliva production, which helps fight decay naturally.
-   Regular dental visits improve long-term oral health, especially when started young.

## Fluoridation and Sealants

-   Water fluoridation reduces cavities by about 25% in children and adults.
-   The U.S. Public Health Service recommends 0.7 mg/L fluoride in community water systems.
-   In 2020, only 32% of U.S. eight-year-olds had dental sealants, even though 77% needed them.
-   Sealants prevent about 80% of cavities in molars during the first two years after application.
-   Cochrane reviews found fluoridation’s benefits have shrunk since the 1970s, likely due to widespread toothpaste use.

## Who Does What in Dentistry?

-   In 2026, the U.S. had 202,485 professionally active dentists.
-   Women made up 39.6% of dentists that year, up from just 24% in 2005.
-   The average retirement age for dentists reached 68.7 in 2026.
-   94% of dental hygienists work in dental offices, with a median salary of $94,260.
-   Dental assistants numbered 381,900 in 2026 and typically earned around $47,300.
-   Certified dental assistants earned about $3.50 more per hour than non-certified peers in 2026.
-   One in five dentists reported working in a specialty like orthodontics or pediatric dentistry.

## Materials and Implants Facts

-   Dental implants have a five-year success rate above 90%, according to long-term studies.
-   Crowns, fillings, and veneers are now made from advanced ceramics and composites that can last over a decade.
-   In 2025, the FDA reclassified dental amalgam and whitening strips as higher-risk devices requiring stricter labeling.
-   Amalgam now carries warnings for pregnant people, children, and those with mercury sensitivities.
-   Whitening strips must now include safety instructions and enamel risk disclosures.
-   Custom mouthguards and dental materials must list all active and inactive ingredients under new FDA rules.

## History Bits and Records

-   George Washington’s dentures were made of ivory, metal, and human teeth—not wood.
-   In 1917, Irene Newman became the first licensed dental hygienist in the U.S.
-   Isaac Newton once had a tooth pulled and set in a gold ring—auctioned for today’s equivalent of $35,000.
-   Dental records remain one of the most reliable ways to identify human remains.
-   Forensic dentistry is used in disaster response and criminal investigations worldwide.