Five‐year results of a randomized controlled clinical trial comparing zirconia and titanium abutments supporting single‐implant crowns in canine and posterior regions
1. Division of Fixed Prosthodontics, University of Berne, , Berne, Switzerland;2. Clinic of Fixed and Removable Prosthodontics and Dental Material Science, Center for Dental Medicine, University of Zurich, , Zurich, Switzerland