Envelope flaps extend just past the furcation to expose the furcation on which rooted teeth?

• A. Single rooted
• B. Double rooted
• C. Multirooted
• D. Fully rooted

Answer: (C)

When performing flap access, you extend the flap to reach the furcation area, which is the point where roots divide. The furcation exists only on teeth with more than one root. To expose or treat that area, you extend the envelope flap just past where the roots split. Therefore, furcation exposure applies to multirooted teeth. Single-rooted teeth have no furcation to expose, and terms like “fully rooted” aren’t relevant here. So the correct idea is that the furcation is on multirooted teeth.