If it's been shown to reduce plaque but not been shown to improve outcomes, is that positive evidence that it won't improve outcomes? Or is it more that noticing plaque reduction is fast while noticing outcome improvements would take a while? In other words, is this a case of "it's shown not to be efficacious, so wtf approval?" or is this more a case of "jury's out, so release it in the meantime"?
If it's been shown to reduce plaque but not been shown to improve outcomes, is that positive evidence that it won't improve outcomes? Or is it more that noticing plaque reduction is fast while noticing outcome improvements would take a while? In other words, is this a case of "it's shown not to be efficacious, so wtf approval?" or is this more a case of "jury's out, so release it in the meantime"?