Operculum: The tissue covering the wisdom tooth as it erupts is called the operculum. This may be a sign that the tooth needs extraction.
Answered 9/14/2013
4.9k views
Swollen gum tissue: Swollen gum tissue behind your back tooth is called an operculum. It can be redundant, excess tissue, tissue left over following removal of a wisdom tooth, or the flap of tissue covering an erupting wisdom tooth. Visit your dentist to have him/her check it out for you.
Answered 9/15/2013
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