A 27-year-old patient visits a dentist for the first time. Clinical examination reveals only one remaining lower incisor root (subgingival). What is the most appropriate radiographic examination for this new patient?

For a new patient with an isolated retained root, the radiographic plan should combine: (1) an OPG for a comprehensive overview of all remaining dental structures, alveolar bone, TMJ, and identification of any other pathology; and (2) a periapical radiograph specifically for the retained incisor root to assess root length, root morphology, periapical pathology, and bone levels in detail. OPG alone does not provide sufficient resolution for accurate periapical assessment of the anterior teeth. Bitewing radiographs assess interproximal caries and crestal bone but are not needed in a patient with essentially no remaining teeth. An occlusal radiograph is less indicated for this purpose.