Dr. L. asks:
I have been using closed tray impressions since I started restoring dental implants. I have used them for single as well as multiple units. My laboratory now wants me to start using open tray impressions where I have to unscrew the transfer impression coping when I remove the impression. I think closed tray impressions are fast and easy and comfortable for the patient. Have you noticed any difference in accuracy between the open and closed tray impressions?