Esthetic outcomes of single-tooth implant-supported restorations using metal-ceramic restorations with zirconia or titanium abutments: A randomized controlled clinical study

1. Baldini, N.
2. D'Elia, C.
3. Clementini, M.
4. de Albornoz, A.C.
5. Sanz, M.
6. de Sanctis, M.