The concept of retrievablity was something that seemed very important in the "beginnings" of implantology.
Back then everyone was saying that being able to get a crown off was important for possible repairs. I stopped using crowns with holes in them to get access to the screw when patients complained: " I paid all this money for a crown with a hole in it." Then the problem occurs, the abutment is loose but the crown will not come off because the cement is too strong. Any thoughts on this issue and other retrievability topics (e.g Should the abutment have retention without a screw, or should the screw only give the retention)?