Oral Health News
The latest science and news on bad breath, oral hygiene, and dental health. New posts are added as fresh research comes out. For our in-depth reference guides, see the articles.
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Zinc Rinse Beat Probiotic Lozenges for Bad Breath, a Trial Finds
In a 4-week randomized trial of 117 adults with chronic bad breath, a zinc mouthrinse cut odor gases most, probiotic lozenges next, and advice alone least.
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Bad Breath and Bleeding Gums Rise and Fall Together, a Large Study Finds
A 2026 Journal of Breath Research study of nearly 1,000 people found mouth odor rose alongside gum inflammation — and better hygiene cut both together.
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Bad Breath's Emotional Toll Doesn't Track How Bad It Actually Smells
A 2026 Journal of Breath Research study found the distress bad breath causes only loosely matches measured odor — self-perception plays a big role.
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Better Oral Hygiene Eased Bad Breath and Its Social Toll, a Small Trial Finds
A small 2026 randomized trial found that a strict 45-day oral hygiene routine reduced self-reported bad breath and improved quality of life in people with gum disease.
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Do Braces or Aligners Cause Bad Breath? A New Study Weighs In
A 2026 study found people in fixed braces had more bad breath than clear-aligner users — but the real drivers were plaque, tongue coating and dry mouth, not the brackets.
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Can a Short Fasting Diet Calm Gum Disease? An Early Trial Says Maybe
A small King's College London trial found a 5-day fasting-mimicking diet lowered gum-disease inflammation after periodontal treatment. Early, promising, not a breath cure.
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Can an Oral Bacteria Transplant Cure Chronic Bad Breath? A UW Trial Asks
University of Washington dentists have begun a first-of-its-kind trial transplanting oral bacteria from a healthy donor to rebalance the microbiome behind chronic bad breath.
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Tongue Brushing Plus Probiotics Cut Bad Breath Most, New Trial Finds
A 2026 randomized trial found that pairing daily tongue brushing with an oral probiotic reduced bad-breath gases more, and for longer, than either habit on its own.