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Mouth Diseases




I have had a canker sore on my tongue in the exact same place on my tongue for the last three or four years. My dentist doesn`t know what the problem is. I finally made an appointment with a oral surgeon. Is this rare for it to be in the same place?


If the sore has been present constantly in the same place, that would not be consistent with a diagnosis of aphthous ulcer ("canker sore"), and a biopsy would probably be appropriate. If the sore last 7-10 days, then heals completely, then it could be an aphthous ulcer. Aphthous ulcers infrequently will affect the same place in the mouth each time (although usually they tend to develop in different areas of the mouth with each episode).

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Response by:

Carl M Allen, DDS, MSD Carl M Allen, DDS, MSD
Professor Emeritus of Oral Pathology
College of Dentistry
The Ohio State University