Clogged salivary gland

I have a bumb on the inside of my bottom lip.  I went to a doctor and he told me it was a clogged salivary gland so he cut it out and check it for cancer and there was nothing.  So after that I went on to get braces.  Well my lip healed and then about a year later the clogged salivary gland came back.  The doctor told me this is because I had the braces and it was irretating the area.  Now I no longer have braces and the gland is back and annoying as ever.  

Is this information correct what the previous doctor told me about the braces bringing it back?  And whats to stop it from coming back after they remove it again?

[Steve Bader, DMD]

As Dr. Erfani stated, this is most likely a mucocele, a single clogged tiny salivary gland.  However, once surgically removed the SAME gland can never reclog, since it is gone.  Therefore, you have another one, even if it seems the exact same place.  You have thousands of tiny glands in your lip.  You may be best treated by another removal.  You could get another one later, but that would be unusual.  Good luck.

[Sam Delfino]

This is called Mucocele. This can come from lip biting, other habits, or on their own. There is not much you can do about it and they usually go away on their own even if not removed surgically.

[Bryanh]

I was hoping it would go away on it's own but it just sits here. So what do you think I should do?

[Bryanh]

Thank for the replies gentlemen.