J Clin Periodontol. 2023 Feb 7. doi: 10.1111/jcpe.13787. Online ahead of print.
ABSTRACT
AIMS: To evaluate the influence of the abutment material (zirconia vs. titanium) on the long-term aesthetic and clinical outcomes of implant-supported restorations.
MATERIALS AND METHODS: In 30 patients, a single implant-supported restoration with either a zirconia or a titanium abutment was placed in the anterior maxilla (incisors, canines, and bicuspids). Aesthetic (Implant Crown Aesthetic Index-ICAI), clinical, radiographic and patient-centred outcomes were recorded at baseline (1-month after final restoration), 1 year and 5 years of follow-up. This study was registered in ClinicalTrials.gov (NCT02315794).
RESULTS: 25 subjects completed the follow-up visits at 1 and 5 years. Using ICAI values demonstrated statistically significant better aesthetic outcomes when zirconia abutments were used compared to titanium abutments. Between 1 to 5 years, the aesthetic sub-analysis of the crown component worsened, however the mucosal sub-analysis improved. There were no significant changes in bone levels, but the plaque index, bleeding on probing and probing depths worsened in both groups.
CONCLUSION: At 5 years, standard zirconia abutments achieved better aesthetic outcomes, although with similar clinical behaviour.
PMID:36748305 | DOI:10.1111/jcpe.13787
