What are the objectives of furcation therapy:
The objectives of furcation therapy are to

Facilitate maintenance
Prevent further attachment loss and
Obliterate the furcation defects as a periodontal maintenance problem. The selection of therapeutic mode varies with the class of furcation involvement, the extent and configuration of bone loss, and other anatomic factors.
Facilitate maintenance.
Prevent further attachment loss.
Obliterate the furcation defects as a periodontal maintenance problem.
All of the above.