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ceramic implants - international magazine of ceramic implant technology No. 1, 2017

interview | < 500 N < 400 N < 270 N Fig. 1: Investigation report: dynamic and static examination according to ISO 14801. there is only one zircon worldwide that does not contain aluminium. I do not know whether Canadian zircon meets these standards, as all the deposits known in Canada have natural admixtures of aluminium in zircon. I do not know of any deposit in the whole American region which is free from chemically questionable admixtures. Only Ja- pan and Australia have deposits from which dental zircon products can be made. I have conducted in-depth re- search on zircon for about 15 years. Dr Kolbe: I am, by now, convinced by zircon implants. They clearly guarantee inflammation-free integration. However, it must be said that that these implants either integrate or are lost very soon after implantation—as has been pointed out by a scientific group working with Andrea Mombelli at the University of Geneva. The loss of an implant usually happens without much “collateral damage”, hence, without any further inflammation. What could be the cause of those early losses that occur without any signs of inflammation? Dr Kolbe: According to our experience, one reason or cause for such “spontaneous” implant failures could be the fact that past focal infections and interferences had not healed properly in the preliminary stages in the area designated for implantation. This applies to the bone as well as to the soft tissue. By the way, this as- sessment is in line with the approach of our colleague Nischwitz. In well over 90 per cent of these cases, I found out that there had previously been a serious inci- dent of this kind in the bone, and that it still showed, de- spite its alleged healing, a defence reaction. In this kind of implantation area, metabolic processes occur which the tissue matrix cannot regulate in a “draining” manner. The so-called sol-gel transformation, as described in 2001 by Thomas Gyöngyösi, is the ability of cells and implants 1 2017 47

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