口腔指南共识汇总

May 15, 2024

About Community Water Fluoridation

Key points

Community water fluoridation is the process of adjusting the amount of fluoride in drinking water to a level recommended for preventing cavities.

Community water fluoridation benefits all members of a community by preventing cavities, reducing oral health disparities, and saving money for everyone.

Overview

Notice‎

CDC does not mandate community water fluoridation. The U.S. Public Health Service (USPHS)

recommended fluoride level

is not an enforceable standard.

Community water fluoridation is a cornerstone strategy for prevention of cavities in the U.S. It is a practical, cost-effective, and equitable way for communities to improve their residents’ oral health regardless of age, education, or income.

1

CDC named fluoridation of drinking water one of

10 great public health interventions of the 20th century

because of the dramatic decline in cavities since community water fluoridation started in 1945.

Keep Reading:

Fast Facts: Community Water Fluoridation

How it works

Almost all water contains some naturally occurring fluoride, but usually at levels too low to prevent cavities. The recommended fluoride concentration in drinking water (also called the optimal level) is 0.7 milligrams of fluoride per liter of water.

2

This is about equal to 3 drops of water in a 55-gallon barrel.

State and local governments decide whether to implement water fluoridation. Often, voters themselves make the decision to adjust water fluoride to improve public health. Some states have laws that require water systems of a certain size to provide fluoridated water. In some areas, the level of naturally occurring fluoride in water is already at a level proven to prevent cavities.

Community water systems add fluoride as needed to reach the optimal level. Communities also might remove fluoride if the natural level is too high.

Fluoridated water bathes teeth with a low level of fluoride throughout the day. This helps strengthen a tooth's surface, making it more resistant to decay.

Did you know?‎

Foods and beverages are often processed in communities that have fluoridated water. This extends the benefits of water fluoridation to people who live outside the community. This secondary benefit is called the halo (or diffusion) effect.

What the research shows

Studies continue to show that widespread community water fluoridation prevents cavities and saves money, both for families and the health care system.

Drinking fluoridated water keeps teeth strong and reduces cavities by about 25% in children and adults.

3

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This results in less mouth pain, fewer fillings or teeth pulled, and fewer missed days of work and school.

Communities of 1,000 or more people see an average estimated return on investment (ROI) of $20 for every $1 spent on water fluoridation. The ROI for community water fluoridation increases as the community size increases, but even small communities save money.

5

Communities served by fluoridated water save an average of $32 per person a year by avoiding treatment for cavities.

5

What CDC is doing

CDC works to improve the oral health of the nation by encouraging the effective use of fluoride products and community water fluoridation.

Keep Reading:

What CDC Is Doing

What you can do

Use fluoride toothpaste and drink fluoridated water if it is available where you live. Fluoride's protection against cavities works at all ages.

If your drinking water is not fluoridated, ask your dentist, family doctor, or pediatrician if your child should take an oral fluoride supplement, such as drops, tablets, or lozenges. Visit a dentist regularly for checkups and cleanings.

Keep Reading:

About Fluoride

May 15, 2024

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Content Source:

National Center for Chronic Disease Prevention and Health Promotion (NCCDPHP)

;

CDC Division of Oral Health

References

Centers for Disease Control and Prevention. Achievements in Public Health, 1900-1999: Fluoridation of Drinking Water to Prevent Dental Caries.

JAMA

. 2000;283(10):1283–1286. doi:10.1001/jama.283.6.735

U.S. Department of Health and Human Services Federal Panel on Community Water Fluoridation. U.S. Public Health Service Recommendation for Fluoride Concentration in Drinking Water for the Prevention of Dental Caries.

Public Health Rep.

2015;130(4):318–331. doi: 10.1177/003335491513000408

Griffin SO, Regnier E, Griffin PM, Huntley VN. Effectiveness of fluoride in preventing caries in adults.

J Dent Res

. 2007;86(5):410–414.

Iheozor-Ejiofor Z, Worthington HV, Walsh T, et al. Water fluoridation for the prevention of dental caries.

Cochrane Database of Syst Rev

. 2015;(6). Art. No.: CD010856. doi: 10.1002/14651858.CD010856.pub2.

O'Connell JM, Rockell J, Ouellet J, Tomar SL, Maas W. Costs and savings associated with community water fluoridation in the United States.

Health Aff

. 2016.35(12):2224–2232. doi: 10.1377/hlthaff.2016.0881