I have a great dental cysts, matured in many years. is it dangeroys? how must it be treated?

Dental exam: Start with a dental exam. From that visit the dentist may treat you himself or refer you to an oral surgeon.

Surgically removed?: I can only give you some general guidelines since i cannot clinically see you nor the x-rays of your teeth and jaws & specifically the "dental cysts" in question. Cysts generally enlarge over time and need to be surgically removed. As they get larger over time, may become infected, effect other teeth, & destroy bone & other tissues, should not generally be left untreated. Consult with a local os.