Bottom mid teeth tingling constantly past 4 days. no toothache. no gum pain or redness and no pain while eating. sensitivity toothpaste didnt help neither did one dose of ibuprofen (400mg). cavity or sensitivity?

If the tingling in your teeth is not related to the teeth or gums, (see your dentist regularly), it could be related to a nerve irritation or, most likely, to stress.

Most common cause of "tingling" is infection. There may, however, be other causes such as fractured tooth/teeth, gum disease, parafunctional habits, etc. What to do? See a Dentist, especially if it has been more than 6 months since your last examination.