In endodontic treatment planning, which factor supports staging treatment over multiple visits?

• A. Presence of acute infection or flare-up; patient comfort limitations; need for intracanal medicament; need to reassess radiographic and clinical response before obturation.
• B. All cases should be completed in a single visit.
• C. Staging is only dictated by clinician preference.
• D. Staging is never necessary.

Answer: (A)