A root canal might be needed if the cause of the toothache is determined to be an infection of the tooth's nerve. Bacteria that have worked their way into the inner aspects of the tooth cause such an infection. An antibiotic may be prescribed if there is fever or swelling of the jaw.
Definition of correspondence for Students. 1  1 : communication by means of letters or e-mail : the letters or e-mail exchanged. 2  2 : agreement between certain things Sometimes there is little correspondence between the spelling and the pronunciation of a word.
Students are not required to be together at the same time. Mail correspondence, which is the oldest form of distance education, is an asynchronous delivery technology, as are message board forums, e-mail, video and audio recordings, print materials, voicemail, and fax. The two methods can be combined.