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Evaluation of the peri-implant tissues in the esthetic zone with prefabricated titanium or zirconia abutments: A randomized controlled clinical trial with a minimum follow-up of 7 years

Zirconia AbutmentsPeri-implant TissuesDental BiomechanicsEsthetic ZoneWound HealingSurgeryImplantable DeviceMedicineOrthopaedic SurgeryProsthesis