In 2016 I had 6 anterior crowns placed. I have had problems with bleeding between 8&9 (the front two teeth) and sloughing of skin. I asked for a certificate of the alloys used but received no real information as to the composition of alloys used. I did note, however, that e.max was not referenced in this “certificate” but instead GC LiSi Impress. I have tried researching the materials in this product but quite honestly the only thing I can find, besides the marketing from the company, is a thread started by lab technicians. Can you tell me anything about this product?
Carol from Huntsville, AL
(See Dr. Hall’s answer below.)
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I’m assuming that all the crowns were made from the same material. So, if you were allergic to the crowns you would be having inflammation and discomfort around all of them, not just between the front two. Also, I have not heard of an allergy to dental work causing bleeding. This sounds more like there is some problem with catching food particles or some other functional problem between those front two teeth—a margin that has an overhang or something in the shape of the crowns that causes food particles to get trapped there. My recommendation would be to be sure you floss there. And then, if you floss, notice if there is a ledge under the gum that catches your floss—this would indicate an overhang that your dentist needs to correct.
As far as the material in the crowns, it sounds like it’s GC LiSi Press. The reason your dentist couldn’t give you an identalloy certificate is that certificate shows the metals in the crown, and these crowns are metal-free. GC LiSi Press is a high-density lithium disilicate. I haven’t heard any reports of allergy to lithium disilicate, and researching it right now I can’t find any credible reports of documented allergy.
– Dr. Hall
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About David A. Hall
Dr. David A. Hall was one of the first 40 accredited cosmetic dentists in the world. He practiced cosmetic dentistry in Iowa, and in 1990 earned his accreditation with the American Academy of Cosmetic Dentistry. He is now president of Infinity Dental Web, a company in Mesa, Arizona that does advanced internet marketing for dentists.