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.
Committees of Correspondence were the American coloniesâ first institution for maintaining communication with one another. They were organized in the decade before the Revolution, when the deteriorating relationship with Great Britain made it increasingly important for the colonies to share ideas and information.