It is also possible to use a disposable plastic impression tray as shown below. There are different lengths though.Īsk for acrylic, 3mm spacing, perforations and a stepped handle. One big advantage of the Neoss system is that there is only one screwdriver. You will need an implant replica for each implant but they come in the pack with the impression coping. The ones you need for this look like the one on the right. You need to order the ones that say 'impression coping' but not 'impression coping open tray'. These are no good for the closed tray technique. The newer Neoss impression copings have a retentive block around the shaft and look like this one on the left. You would only need the 8mm or 18mm if the adjacent teeth are exceptionally short or long. The 11mm impression coping will be good for pretty well all your impressions. You will need an impression coping for each implant, They come in different lengths, 8mm, 11mm and 18mm but they are all the same width. However, the closed tray technique can be a useful alternative. In my opinion, the open tray technique is the most accurate and my first choice wherever this is possible. You just order an impression coping and you know that it will be the right diameter. They're all the same and this makes things very much easier. This means that, unlike other systems, you don't have to use different sized components for different widths of implants. This is how it works:Īs you can see, the top bit, the restorative platform, is always the same at 4.1mm. With one exception ( the very narrow 3.25mm implant) all the Neoss implants have the same width of restorative platform regardless of the width of the implant itself. This example will show the impression for Neoss implants. These are often called "fixture head impressions". This page shows how to take a closed tray implant level impression.
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