Oral health research
Nicotine pouches and oral health: gums, mouth lesions and the evidence
Studies have reported changes to the mouth lining at sites where nicotine pouches are placed. Those observations warrant attention, but they do not give a reliable lifetime risk of gum disease or oral cancer. A mouth lesion, a symptom report and a confirmed disease diagnosis are different findings, and the distinction matters when reading this research.
What the earlier review could establish
A 2024 systematic review searched the literature through February 2024 and included three studies with 190 participants. The reviewers judged all three studies to have a high risk of bias. Reported findings included mouth-lining changes at placement sites, dry mouth, soreness and other oral symptoms. [1]
The review provides an account of the evidence available at its search date. It does not establish that every pouch user develops those symptoms, and its small evidence base cannot support a precise estimate for the wider population.
Understand the tissue being discussed
The oral mucosa is the tissue lining the mouth. Gingiva means the gums around the teeth. A change in the mucosa is not automatically a diagnosis of periodontal disease, which concerns the supporting tissues of the teeth. Papers that measure different tissues and outcomes should not be treated as if they measured the same condition.
What a five-person case series adds
Miluna-Meldere and colleagues reported clinical and microscopic findings in five selected nicotine-pouch users in 2024. The researchers described white lesions at placement sites, with epithelial changes and inflammation in tissue samples. The publication includes a January 2025 correction to a figure. [2]
A case series can document a finding in detail. It cannot tell us the percentage of all users who will develop it: the five people were selected for investigation, not drawn as a representative sample of every user. The report also cannot determine the future behaviour of a lesion in a different person.
A white patch is an observation that needs assessment
Appearance alone does not establish the cause or diagnosis. A reader cannot match a patch to a photograph online and rule out a problem. Clinical examination and, where appropriate, further investigation answer questions that a general illustration or article cannot.
A larger clinical study published in 2026
Daneshian and colleagues examined participants aged 18 to 30 recruited from nine dental clinics: 126 nicotine-pouch users, 63 users of oral tobacco-derived pouches and 83 non-users. The July 2026 abstract reports oral lesions in 79% of the nicotine-pouch group and 89% of the oral tobacco-derived pouch group. [3]
These percentages apply to the recruited groups. They are not national prevalence estimates. The study was cross-sectional, so it assessed people at a point in time rather than following an initially unaffected group to measure new cases.
The abstract also reports no observed increase in caries or periodontal disease for use of up to six years. That result does not establish lifetime safety or erase the mucosal findings. The summary here is limited to the published abstract; it is not an independent reanalysis of participant data. [3]
Keep the research outcomes separate
| Finding | Question that remains |
|---|---|
| A reported symptom | Was the mouth examined, and was a diagnosis confirmed? |
| A visible lesion | What tissue is affected, and what did the examination establish? |
| Microscopic tissue changes | Which changes were identified, and what follow-up is available? |
| No detected difference in a disease measure | Was the sample and follow-up adequate to exclude a meaningful difference? |
The cited studies do not supply a dependable numerical estimate of lifetime oral-cancer risk from nicotine pouches. Equally, a lack of such an estimate should not be used to advertise the products as harmless. Longer follow-up, clear exposure histories and suitable comparison groups would help answer questions the present studies leave open.
When a mouth symptom needs professional attention
The U.S. National Institute of Dental and Craniofacial Research advises seeing a dentist or doctor for mouth symptoms lasting more than two weeks, including a sore, irritation, lump, thickened area or white or red patch. [4] This is general symptom guidance, not a claim that every persistent patch is cancer or that pouches caused it.
At an appointment, describe when the change began, whether it has changed and which tobacco or nicotine products you have used. Bring a package photograph if it helps identify the product. Record symptoms rather than assigning yourself a diagnosis from online images.
A dental professional can examine the area, consider other causes and decide whether follow-up or additional tests are needed. Persistent symptoms deserve that assessment even when discomfort is mild.
Frequently asked questions
Does the 79% figure mean that 79% of all nicotine-pouch users develop lesions?
No. It describes the nicotine-pouch group recruited for one 2026 dental-clinic study. It is not a representative estimate for every user or every market.
Do mouth-lining changes prove oral cancer?
No. A lesion is an observed abnormality, not automatically a cancer diagnosis. Persistent changes need examination; the cited pouch studies do not establish a lifetime cancer-risk percentage.
Can a normal-looking mouth prove that pouch use has no health effects?
No. Visual appearance cannot establish all local or systemic health outcomes. Research findings must be interpreted using the outcomes actually measured.
References
Sources checked on 29 October 2026. Data years and study populations are stated in the text. This is a focused educational summary, not an exhaustive systematic review.
- Rungraungrayabkul et al. What is the impact of nicotine pouches on oral health: a systematic review. BMC Oral Health, 2024;24:889. DOI: 10.1186/s12903-024-04598-8.
- Miluna-Meldere et al. Oral mucosal changes caused by nicotine pouches: case series. Diagnostic Pathology, 2024;19:127. Figure correction published in January 2025.
- Daneshian et al. Oral Lesions and Dental Status in Individuals Using Oral Tobacco-Free Nicotine Pouches. Oral Diseases, online 1 July 2026. DOI: 10.1111/odi.70409. Abstract consulted.
- National Institute of Dental and Craniofacial Research. Oral Cancer: symptoms and diagnosis.