CAN A TOOTHACHE CAUSE A HEADACHEHow to do it: With this exercise, you may breathe by just one nostril at any given time. No breath will are available or out of one's mouth.Cavernous Sinus Thrombosis It is really rare, but an untreated dental problem can cause a serious, possibly lifetime-threatening affliction termed cavernous sinus thrombosis.Spir