Mucocele
It's natural to be a little worried when a new lump or bump forms on your body. If you or your child develops a soft swelling in the mouth, it may just be a mucocele -- a harmless cyst. It's still a good idea to get it checked out, though, especially if it's bothersome.
Symptoms
Mucoceles often show up on the inside of your lower lips, your gums, the roof of your mouth, or under your tongue. Those on the floor of the mouth are called ranulas. These are rare, but because they are larger, they can cause more problems with speech, chewing, and swallowing.
Mucoceles may have these characteristics:
Moveable and painless
Soft, round, dome-shaped
Pearly or semi-clear surface or bluish in color
2 to 10 millimeters in diameter
Treatment
Mucoceles often go away without treatment. But sometimes they enlarge. Don't try to open them or treat them yourself. See your doctor, your child's pediatrician, or your dentist for expert advice.
These are the two types of treatment a doctor or dentist most commonly uses:
Removing the gland. The dentist or doctor may use a scalpel or laser to remove the salivary gland. Local anesthesia numbs the pain.
Helping a new duct to form. Called marsupialization, this technique helps a new duct form and helps saliva leave the salivary gland
