In short
- A common canker sore heals on its own within one or two weeks.
- If a sore won't heal in more than 2–3 weeks, it should be assessed.
- Warning signs: it grows, bleeds, hardens or doesn't hurt.
- Most are benign; the assessment confirms it with certainty.
- Early detection of any lesion changes everything.
01What's normal?
Canker sores and small sores from a bite, rubbing or stress are very common and heal on their own within one or two weeks. They usually hurt, feel soft and disappear without a trace.
As long as the sore heals in that time, there's usually no cause for concern.
02When to be concerned
A lesion should be assessed when it doesn't heal in more than two or three weeks, or shows signs such as: growing, bleeding easily, hardening, changing color (white or red patches) or, importantly, not hurting.
A sore that doesn't hurt and won't heal is exactly the one most worth checking, because the body isn't giving a clear warning.
A sore that won't heal and doesn't hurt is the one most worth checking. Most are benign; early detection changes everything.
03Factors to keep in mind
Tobacco, alcohol and a tooth or denture that constantly rubs raise the risk of sores that don't heal well. Identifying and removing that factor is part of treatment.
This doesn't mean every sore is serious —most aren't— but it is worth checking calmly and with judgment.
04The assessment and biopsy
In the consultation I examine the lesion and, when indicated, perform a biopsy for a reliable diagnosis. It's a simple procedure that gives certainty.
Oral pathology is precisely the specialty for this: detect early and resolve. When in doubt, it's always better to check.
·Frequently asked questions
How long should a mouth sore take to heal?
Common canker sores heal on their own within one or two weeks. If a lesion won't heal in more than two or three weeks, it should be assessed.
Is a sore that doesn't hurt more concerning?
It can be. A lesion that won't heal and doesn't hurt deserves a check, because the body isn't giving a clear warning. Most are benign, but it's worth confirming.
Does every sore that won't heal mean cancer?
No. The vast majority are benign. The assessment and, if appropriate, a biopsy are exactly what confirm the diagnosis with certainty.
What is an oral biopsy and does it hurt?
It's taking a small sample of the lesion to study it. It's done under local anesthesia, it's a simple procedure and it gives a reliable diagnosis.
Who do I see for a mouth lesion in Cancún?
An oral and maxillofacial surgeon, a specialist in oral pathology. In Cancún you can be assessed by Dra. Jessica López.
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Every case is different and deserves an assessment. Message me on WhatsApp: I reply personally and guide you with no obligation.
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