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Zarauz, Cristina; Pitta, Joao; Pjetursson, Bjarni; Zwahlen, Marcel; Pradies, Guillermo; Sailer, Irena (2021). Esthetic Outcomes of Implant-Supported Single Crowns Related to Abutment Type and Material: A Systematic Review. International journal of prosthodontics, 34(2), pp. 229-249. Quintessence Publ. 10.11607/ijp.6314
