User blog comment:Shishio san/The Zero Squad/@comment-1405658-20121114080959/@comment-5606268-20121114085121

Kurotsuchi clearly stated that a broken Bankai does not revert to its original state even when repaired with exception of Komamura Bankai. Now whether Ichigo's is another exception we don't know but what we do know is that, Ichigo knows very little about his Quincy abilities so how he will repair his Bankai may not have anything to do with those abilities