Efficacy of keratinized mucosal augmentation with a collagen matrix concomitant to the surgical treatment of peri-implantitis: A dual-center randomized clinical trial

1. Solonko, M.
2. Regidor, E.
3. Ortiz-Vigón, A.
4. Montero, E.
5. Vilchez, B.
6. Sanz, M.