When planning extraction of a multirooted tooth, which finding would most influence the technique and risk of damage to adjacent structures?

• A. Presence of calculus on the tooth.
• B. Crown height.
• C. Color of enamel.
• D. Furcation involvement between roots.

Answer: (D)

When planning an extraction of a multirooted tooth, the crucial factor is the status of the furcation—the area where the roots diverge and the surrounding bone between them. If there is furcation involvement, it means bone loss and complex root anatomy within that space. This changes how you approach the procedure: you’ll likely need to section the tooth so each root can be removed separately, and you must control the direction and magnitude of forces more carefully to avoid drifting or fracturing adjacent roots and surrounding bone. By adapting the technique to split the tooth and remove roots one by one, you reduce the risk of damaging neighboring structures and improve the chance of a clean extraction.

Other findings don’t shape the plan as much. Calculus on the tooth is a cleaning concern more than an extraction strategy. Crown height can influence leverage somewhat but doesn’t dictate the risk to nearby structures, and enamel color has no practical bearing on extraction technique.