Hi dear , The symptoms you mention in query are probably due to nerve dysfunction . Sometimes nerves like glossopharyngeal nerve get injured or pinched during dental procedure and due to any other reason will cause such symptoms . But there can be other reasons also like canker sore , dry mouth (xerostomia) , side effects of any medicine or diabetic neuropathy . I would suggest you to consult oral surgeon for proper examination and to rule out above conditions . Doctor may prescribe medicine which has anti inflammatory effect on nerves and supplement like neurobion forte . Hope your concern has been resolved. get well soon. Best Wishes, Dr. Harry Maheshwari