Sikora CL et al.: Wear and Corrosion Interactions at the Titanium/Zirconia Interface: Dental Implant Application.
Study objectives: The authors investigated the combined effect of both wear and corrosion on the materials at the implant and abutment interface in vitro. Using a simulated oral environment, Titanium V (Ti) and Zirconia (Zr) abutment materials were slid against Titanium V and Roxolid implant alloys plates. The four couplings (Ti/Ti, Ti/Rox, Zr/Ti, Zr/Rox) were selected for the tests
Results and conclusions: As compared to Titanium V (plate)/Titanium V (ball) interface, Zirconia (ball), in combination with Roxolid (plate) showed ~85% less wear and ~22% less corrosion, making this two one of most optimal combinations of implant and abutment. The authors conclude that: 1. Degradation processes at the implant/abutment interface are caused/triggered by the combined interaction of wear and corrosion in the oral environment. 2. Zirconia abutment groups had significantly less volume loss compared to the titanium V group. 3. Roxolid implant alloy demonstrated superior corrosion resistance.