Profilometric changes of peri‐implant tissues over 5 years: a randomized controlled trial comparing a one‐ and two‐piece implant system - Sapata, Vitor Marques; Martín, Ignacio Sanz; Hammerle, Christoph H. F; César Neto, João Batista; Jung, Ronald Ernst; Thoma, Daniel S (Clinical Oral Implants Research, 2018)