Prevention

Is mouthwash necessary?

Reviewed by Dr. Samuel Bacon, DDS (dentist). Last reviewed November 3, 2026.

Status: Approved

Short answer: It's not a must. The ADA says mouthwash isn't a replacement for brushing and flossing, but it may be a helpful addition for some people. Therapeutic rinses can help reduce plaque, gingivitis, cavities or bad breath. Cosmetic rinses only freshen breath for a while. Ask your dentist whether a rinse would help you, and look for the ADA Seal.

Two kinds of mouthwash

The ADA describes two types:

  • Therapeutic rinses have active ingredients that can help reduce plaque, gingivitis, cavities or bad breath. Fluoride rinses help prevent tooth decay.
  • Cosmetic rinses control bad breath for a short time and leave a pleasant taste, but they don't lower your risk of cavities or gum disease.

Common active ingredients

The ADA lists cetylpyridinium chloride, chlorhexidine, essential oils, fluoride and peroxide. Chlorhexidine rinses are available by prescription only.

Who might benefit

Some people may get extra help from a rinse, for example if they're prone to cavities or gum problems. Your dentist can tell you whether one fits your needs and which type to use.

Children

The ADA says mouthwash isn't recommended for children under 6, who may swallow it. Swallowing large amounts can cause nausea, vomiting and, with alcohol-containing rinses, intoxication.

Bad breath that won't go away

A rinse can mask bad breath, but it won't fix the cause. See What causes bad breath?

At Indy Smile Group

Your dentist or hygienist can tell you at your next visit whether a rinse makes sense for you. See our teeth cleaning pages for Fishers, Carmel and North Indy.

Next step

Ready to talk it through with a dentist? Book online or call the office closest to you.

Frequently asked questions

Can mouthwash replace flossing?
No. The ADA says mouthwash isn't a replacement for brushing and flossing.

Does alcohol mouthwash cause oral cancer?
The ADA says a review of the research didn't find a link between alcohol-containing mouthrinse and oral cancer. Alcohol can be drying, so ask your dentist about an alcohol-free rinse if you have dry mouth.

Can mouthwash reach where my brush can't?
The ADA says mouthwash, like floss and water flossers, can get in between teeth. It still isn't a replacement for brushing and flossing.

Sources

  1. ADA MouthHealthy – Mouthwash
  2. ADA – Oral Health Topics: Mouthrinse (Mouthwash)

Last reviewed: November 3, 2026
Reviewed by: Dr. Samuel Bacon, DDS (dentist)

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