Why is it that teeth treated with formocresol pulpotomy had earlier exfoliation than those with IPT ?

IPTs seems to have better success rates than FPs in recent studies.Why is it that teeth treated with formocresol pulpotomy had earlier exfoliation than those with IPT ?
Formocresol pulpotomy is a procedure done on baby teeth. Do you have a molar coming in funny?


If it is really bad they can extract it, implant a post, let it heal and attatch a ';tooth'; to it later, but that is pretty extreme.


If these are still your baby teeth, it's different, because adult teeth will grow in when you lose them.