Observational studyScientific reports2025
A prospective observational study regarding host-derived immunological parameters around zirconia implants in comparison to natural teeth following flap surgery.
Observational study in Scientific reports, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
With the increasing use of dental implants in patients undergoing extensive mandibular reconstructions, it is crucial to understand how soft tissues react in different implantation contexts. The aim was to compare the behavior of the soft tissues surrounding zirconia implants to that of the soft tissues surrounding natural teeth in terms of cytokine levels in patients who had undergone various microvascular flap procedures for jaw reconstruction. Due to anatomical deviations after flap surgery, such as thick skin paddles, the possibility of fixed implant dentures in patients with bony flaps is rare. Therefore, these patients are often treated with removable dentures. In this prospective observational study ten patients with a total of six fibula flaps and four deep circumflex iliac artery (DCIA) flaps underwent reconstruction in the lower and upper jaws using vascularized bone flaps, and were treated with a total of 41 zirconia implants. The cytokine levels in the crevicular fluid were analyzed in terms of the interleukin-1 beta (IL-1b) and matrix metalloproteinase-8 (MMP-8) levels up to one-year follow-up. The implant survival and success rates were also investigated up to one year. No significant differences in IL-1b were found between natural teeth and ceramic implants. After six months, MMP-8 levels of the natural teeth of a patient treated with DCIA flaps were once significantly lower when compared to the ceramic implants inserted into fibula flaps (p = 0.001). The overall survival and success rates were 100 and 76.83%, respectively. For the fibula group, the survival and success rates were 100 and 72.55%, respectively, and for the DCIA group, they were 100 and 81.12%. Zirconia implants and natural teeth showed comparable cytokine levels in the crevicular fluid. Nevertheless, implant treatment with extensive microvascular jaw reconstructions affected the success rates in the present study.
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