Endodontic therapy

Osteoradionecrosis

Dentistry

Orthodontics

Radiation therapy

Maxillary first molar

Surgery

Molar

Root canal

Maxillary molar

Medicine

Journal of Endodontics

The treatment of calcified root canals is challenging in endodontic practice. A 63-year-old man was referred to the postgraduate endodontic clinic at the University of Maryland School of Dentistry, Baltimore, MD, for the treatment of tooth #3. Because of the patient’s history of head and neck radiation and the high risk of developing osteoradionecrosis, a nonsurgical endodontic approach was found to be the most reasonable treatment option despite the questionable prognosis of the tooth. During the endodontic treatment, the distobuccal canal appeared to be partially calcified and was not possible to be located freehand even with use of the dental operating microscope and cone-beam computed tomographic approximated approach.

Guided Endodontic Access in a Maxillary Molar Using a Dynamic Navigation System