interdental
adjective
in·ter·den·tal
ˌin-tər-ˈden-tᵊl 
1
: situated or intended for use between the teeth
2
: formed with the tip of the tongue between the upper and lower front teeth
Examples of interdental in a Sentence
Recent Examples on the Web
Several studies, including a 2018 review of 22 clinical trials, found that interdental brushes were better than floss or other tools at reducing gum inflammation.
—
Elizabeth Cohen, NBC news, 24 Aug. 2025
When used correctly, other types of interdental cleaning techniques can also complement the effects of conventional manual toothbrushing in reducing plaque, according to the ADA.34
According to the ADA, one method of interdental cleaning isn't right for everyone.
—Anna Giorgi, Verywell Health, 21 Aug. 2025
That means brushing your teeth twice a day with fluoride toothpaste and regularly cleaning between your teeth with interdental brushes or floss.
—Katherine Hignett, Forbes, 18 Sep. 2024
In 2017, Waterpik became the first-ever interdental cleaner brand to gain a seal of approval from the ADA for the product’s ability to help remove up to 99 percent of plaque.
—Nicole Saunders, NBC News, 14 Oct. 2020
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Elizabeth Cohen, NBC news, 24 Aug. 2025
When used correctly, other types of interdental cleaning techniques can also complement the effects of conventional manual toothbrushing in reducing plaque, according to the ADA.34
According to the ADA, one method of interdental cleaning isn't right for everyone.
—Anna Giorgi, Verywell Health, 21 Aug. 2025
That means brushing your teeth twice a day with fluoride toothpaste and regularly cleaning between your teeth with interdental brushes or floss.
—Katherine Hignett, Forbes, 18 Sep. 2024
In 2017, Waterpik became the first-ever interdental cleaner brand to gain a seal of approval from the ADA for the product’s ability to help remove up to 99 percent of plaque.
—Nicole Saunders, NBC News, 14 Oct. 2020
Cite this Entry
“Interdental.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/interdental. Accessed 27 Oct. 2025.
Copy CitationMedical Definition
interdental
adjective
in·ter·den·tal
ˌint-ər-ˈdent-ᵊl
: situated or intended for use between the teeth
floss the interdental spaces
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