###Human: Why am I having a painless flap for three weeks in cheek near saliva hole? ###Assistant: Hi. In the absence of pain, it seems to be a case of fibroma, a non-benign lesion and you need not worry about that. This can be due to trauma, bite or sharp tooth or broken tooth in the area.  However, I need to rule out the possibility of stone in duct and tooth. Can you answer these questions: Do you feel any pain on chewing or during eating in any part of the mouth or gland? Is there any pain when you bite? Do you have any carious tooth in the region? Do you have any history of biting in that region? Any other problem for which you are taking medicines?