As regular readers will remember, we've been working with a new CAD/CAM material called Amber Mill Direct. It is a lithium disilicate that does not require a porcelain oven.
Lithium disilicate has been around for a few years now and is incredibly aesthetic. It is frequently the "go to" material for many doctors when working toward maximum aesthetics.
Unfortunately, the one drawback to the material has been that it is very light violet color until it is fired in a porcelain oven. That is not a problem for a case done traditionally in a dental lab, but for doctors working toward same day restorations, that was a problem. The oven part of the process added steps and time to delivery. That often meant that same day was difficult or not achievable.
Amber Mill Direct has changed that game! The material is the correct shade in the block stage. It is also easily polished using standard polishing techniques. It can certainly be fired in an oven if the operator prefers, but for same day cases a simple polish is all that is required.
Our clinical experience with Amber Mill Direct has been very good so far. The material is very hard which means our DGShape DWX-42W mill needs to have special burs to mill the material. That isn't a problem, but it is something you should be aware of.
Also, milling time seems to be a bit longer. These have been clocking in at perhaps 5 minutes more milling time. However, the aesthetics of the cases have been outstanding and well worth the investment. If you have an in-office CAD/CAM system and are looking for maximum aesthetics along with ease of use, definitely explore this material. You can find out more about Amber Mill Direct by following this link.
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