Clinical performance of implant crowns with customized zirconia abutments: A prospective cohort study with a 4.5‐ to 8.8‐year follow‐up

Objective To assess the clinical and esthetic outcomes patient satisfaction of screw-retained one-piece implant crowns fabricated with zirconia abutments after a 4.5- to 8.8-year follow-up. Material methods Thirty-two patients (12 women 20 men), who received 40 single in anterior premolar sites, were included this prospective study. All restorations based on ceramic hand-veneered customized CAD/CAM abutments. The follow-up consisted radiological examinations. pink score–white score (PES-WES) was used evaluate outcome. Patients’ assessed via visual analog scale (VAS). Results Implant prosthetic survival rates 100% 97.5%, respectively. Mean marginal bone loss −0.17 mm (SD 1.16 mm). Probing depth ≤4 98.7% 5 1.3% sites; 8.3% them bleeding probing positive. No technical or biological complications observed except for one abutment fracture. mean PES-WES scores 7.0 7.1, VAS (10-point) 9.41 function 9.26 esthetics showed high satisfaction. Conclusion After observation period 6 years 7 months, veneered conical connection very good performance may be recommended replacement missing teeth. (ClinicalTrials.gov # NCT04370314).