Images prior to root canal treatment. (A) Clinical photograph during endodontic treatment of teeth #31 and #41, demonstrating standard operative field setup; (B) Preoperative periapical radiograph showing pulp chamber morphology prior to instrumentation.
Figure 2.
Gas accumulation before and after treatment. (A) Axial non-contrast cranial CT scan obtained on September 19 demonstrates intracranial gas accumulation (arrows); (B) Follow-up CT 24 h post-HBOT reveals complete resolution of intracranial air collections. CT, computed tomography; HBOT, hyperbaric oxygen therapy.