Furcation involvement occurs in teeth with how many roots?

• A. One-rooted teeth
• B. Multi-rooted teeth
• C. Only incisors
• D. Only canines

Answer: (B)

Furcation involvement requires a space where the roots divide—the furcation itself. That means you need more than one root. Teeth with a single root don’t have a furcation region to be involved, so they can’t show furcation involvement. Multi-rooted teeth, like molars (and some premolars), have two or three roots and the furcation area between them is where this involvement occurs. So the correct idea is that furcation involvement happens in multi-rooted teeth, not in single-rooted teeth such as most incisors and canines.