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Scripta Scientifica Medica


M. Milkov, G. Marinov, A. Tsenev


The authors shared their results from the validation in a guinea pig model of a new ossicular prosthesis with Targis/Vectris System (Ivoclar, Lichtenstein). During the previous two years, the biocompatibility of teflon, gold, and ceramics was assessed. The biocompatibility of Targis and Vectris materials does not exist anymore as they are used in dental practice since 9 years. Targis is a ceramic optimized polymer of the family of ceromers. Vectris is a high-technology material replacing the metal substructure. These materials were inserted into a new medium, in the middle ear of a guinea pig. The experiments were carried out for different periods of time - 29 days, 70 days and 260 days. The ossicular prostheses were histologically examined. Targis and Vectris implanted retroauricularily into guinea pig' middle ear cavity did not show any inflammatory- reaction signs when contacting the skin of the external auditory channel. They proved to be well biologically tolerated even after 260 days after implantation.


ossicular prosthesis; Targis; Vectris; biocompatibility; histology; guinea pig

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M. Milkov

G. Marinov

A. Tsenev

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