In the quiet precision of dental medicine, a question has long lingered at the threshold of diagnosis and treatment: must every measurement be taken anew, or can the image already captured carry more than one burden? A study of sixty patients has found that cone-beam computed tomography scans, when measured along the curved path of the root canal, agree with electronic apex locators at a rate of 0.94 — a figure that invites clinicians to reconsider how much useful work a single scan can do. The finding does not displace established tools so much as it asks whether the journey to treatment migh