The management of failure case resulting form mummification treatment Signs of successful treatment folloewing mummification are the absence of clinical complaints, the formation of secondary cement, and no periapical pathosis present. Treatment about amputation the infected pulp, which has been devitalized in the pulp chamber and leaving the necrotic pulp tissues in root canal is no longer in accordance with treatment tenet now a day. The remaining necrotic tissues is a focus of infection capable of disturbing biologic healing of tissues. Three cases of root canal treatment following pulp mummification which has been done causes complaints from discomfort to severe pain and the infections spread to periapical tissue in 2, 10, and 22 years afterwards. The results of the treatment are good and periapical radiolucency shawing signs of diminution and disappearance. Evaluation on each case was done in 3 months, 6 months and 2 years after the root canal treatment.