An evaluation of root canal treatment in patients who have received irradiation to the mandible and maxilla.
OBJECTIVE
The purpose of this study was to evaluate the success and failure of root canal treatment performed in areas of previous irradiation and to examine any cases of osteoradionecrosis associated with such treatment.


METHODS
A retrospective analysis was done on 22 teeth that had root canal treatment after radiation therapy. Strict radiographic and clinical criteria were used to determine success and failure.


RESULTS
There was a mean follow-up period of 19 months. Of 22 cases, 20 (91%) were considered successful. Both failures occurred with a diagnosis of pulpal necrosis. There were no occurrences of osteoradionecrosis.


CONCLUSIONS
Our study showed that root canal treatment in previously irradiated patients may be successful. In addition, treatment approaches, as well as the criteria for success and failure, should be the same for irradiated patients as for those who have not received radiation treatment.
University of Iowa College of Dentistry, Department of Endodontics, Iowa, USA.
J P
JP
Lilly
D
D
Cox
M
M
Arcuri
K V
KV
Krell
D000328:Adult; D000368:Aged; D002294:Carcinoma, Squamous Cell / Q000532:radiotherapy; D003790:Dental Pulp Necrosis / Q000628:therapy; D005069:Evaluation Studies as Topic; D005260:Female; D005500:Follow-Up Studies; D006258:Head and Neck Neoplasms / Q000532:radiotherapy; D006801:Humans; D008297:Male; D008334:Mandible / Q000000981:diagnostic imaging / Q000528:radiation effects*; D008336:Mandibular Diseases / Q000209:etiology; D008437:Maxilla / Q000000981:diagnostic imaging / Q000528:radiation effects*; D008439:Maxillary Diseases / Q000209:etiology; D008875:Middle Aged; D010025:Osteoradionecrosis / Q000209:etiology; D010485:Periapical Periodontitis / Q000628:therapy; D011859:Radiography; D012189:Retrospective Studies; D012390:Root Canal Therapy; D014070:Tooth / Q000528:radiation effects; D017211:Treatment Failure; D016896:Treatment Outcome; D014945:Wound Healing