Views: 232 Author: Wendy Publish Time: 2023-08-25 Origin: Site
For single unit implant restorations, closed tray impressions are the best option. If the units are parallel, this method can be used to several ones. For the closed tray process, standard impression trays are utilized. The closed tray approach can result in the impression locking into the patient's mouth if the implants are not parallel. If the impression coping is not properly reinserted into the impression before creating models for the case, the closed tray may be erroneous.
When restoring multiple implants, the open tray approach is recommended. This method enables diverging angled implants by using a stock or bespoke tray with holes corresponding to the implant sites. Although this method requires a little more work, it helps prevent mechanical locking and eventually saves you time, worry, and effort. To increase accuracy, doctors can resin-splint the impression copings before taking an impression. When used correctly, the open tray technique produces models that are more precise because the coping locks into the impression material and is not removed.
Select a suitable closed tray impression coping to fit onto the fixture head after removing the healing abutment to reveal the fixture head.
If you're not sure about how it should be placed, take a radiograph to make sure.
Attempt in the pre-made or custom tray. It must completely encircle the arch. Make that the imprint coping and the impression material have enough vertical space.
Around the implant and the surrounding soft tissue, inject low-viscosity, light-bodied impression material. Fill the remaining space in the tray with high-viscosity or heavy-bodied impression material. A successful implant imprint requires firmness, which light-bodied impression material lacks. Avoid using too much of it.
Following the setting of the material, carefully remove the impression, leaving the coping in the mouth.
Take the impression coping out of your mouth and place it in the impression again, making sure it successfully relocates. There frequently is a "click" that can be felt or heard.Change out the healing abutment.
A portion or window is cut through a custom-made tray to cover the implant.
Fit an imprint coping and then take out the healing abutment. Splint many copings together in the mouth if required to increase stability.
Check the imprint coping in the custom-tray to see if it is level with the window. While still guaranteeing that the impression material supports the copings effectively, the placement of the impression copings makes removal simple.
Wax the window to seal it. The impression coping tips should be detectable through the wax.
Take an impression with the right impression substance, then let it dry.
Access and unscrew the impression copings through the window after they have been installed. With the impression copings in place, remove the impression from the mouth.
Replace the healed abutments last.
Inspect the implant impression after you've taken it to make sure all the teeth are noted for articulation so the technician can precisely match the tooth outlines. The analogs and the impression coping need to be firmly in place. Before casting, implant replicas are fastened to the coping.
