If the decay has progressed deep enough to affect the pulp(nerve) of a primary tooth a pulpotomy is performed. The nerve tissue in the pulp chamber (crown segment) is cleaned out and the remaining vital tissue in the root canals is preseved. An agent is placed in the pulp chamber to prevent bacterial growth followed by a resorbable material for a primary tooth. A permanent molar receives a material in the pulp chamber which maintains pulp vitality and allows continued and full root development.
A pulpectomy is required when the entire pulp of the tooth is invloved (due to trauma and/or infection). The diseased nerve tissue is completely removed from the crown and root. The canals are cleaned, disinfected and for a primary tooth filled with a resorbable material. A permanent tooth receives a non-resorbable material.