3/1/2024 0 Comments Cerec tessera reviewSay you’ve controlled for everything else, then the final step of ceramic selection is key in determining how smooth the margins can achieve after milling. This is bad news for everyone.įurthermore, we also have to keep an eye on the amount of reduction too little reduction compromises ceramic strength, while too much reduction increases risk of debonding and tooth sensitivity. Not enough ceramic thickness means that the CAD/CAM block cannot withstand the forces of grinding or milling, and end up losing bits and pieces of itself in a process called chipping. This is because they are made up of both concave and convex angles, some of which needs to be smooth and round to prevent over-mill, while others need to be sharp to ensure proper ceramic thickness along the margins. Here’s the real problem: although inlay preparations are typically less aggressive, they are oftentimes the most technically demanding. Without the resources to troubleshoot these problems, it’s understandable why some would conclude that CEREC isn’t accurate enough, or that dental CAD/CAM is simply not yet mature. Warning: smooth margins don’t always translate into reality. More often than not, the rookie digital dentist would either be unable to totally seat the restoration, or end up finding that dreaded gap along the margins with a dental probe. However, inlays are finicky by nature, and the slightest imperfections means saying goodbye to that snug fit. So when most dentists begin their journey of CEREC chairside CAD/CAM, one of the first treatments that they try is the inlay restoration. In this part of the world, we see a lot of class II cavities in our patients. Scanned inlay preparation with a see-through restoration.
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