Two long-term clinical studies delivered the only clinical proof that the results for Cercon zirconia bridges were comparable to those of metal-ceramic bridges, the gold standard (Sailer et al. 2009). 40-month survival rates were 100%.
Clinical studies on cantilever bridges (Wolfart et al. 2009) and widespan Cercon bridges (Schmitter et al. 2009) have demonstrated high levels of safety for Cercon in different indications.
Cercon is the only zirconia material for which the systemic safety of ceramic veneers has been scientifically studied. Extant studies include in vitro and clinical research, but also naturalistic observations (Rinke, IADR 2010).