When applying the hatch reamer to the inclined maxillary sinus.
For example, if the 4.5mm stopper is inserted and reamed and it does not open when checked with a shock gauge, do you know that it is not an elastic maxillary sinus, but a hard bone?
In this state (without the bones) you can change it with a 6mm stopper and ream it until the hatch opens.
You don't put a bone and put a 6mm stopper and ream?
A little confused
