Scientific article
Open access

13-year follow-up of a randomized controlled study on zirconia and titanium abutments

Published inClinical oral implants research, vol. 34, no. 9, p. 911-919
Publication date2023-09
First online date2023-06-20

Objectives: To assess survival rates and compare technical, biological, and esthetic outcomes of customized zirconia and titanium abutments at 13 years post loading.

Materials and methods: Initially, 22 patients with 40 implants in posterior regions were included. The sites were randomly assigned to 20 customized zirconia abutments with cemented all ceramic crowns (ACC) and 20 customized titanium abutments with cemented metal ceramic crowns (MCC). At a mean follow-up of 13.4 years, patients were examined and implants/restorations assessed for survival and technical complications, as well as biological and esthetic outcomes (pocket probing depth [PPD], bleeding on probing [BOP], plaque control record [PCR], bone level [BL], papilla index [PAP], mucosal thickness, and recession (distance of the margo mucosae [MM]/margo gingivae MG)). Descriptive analyses were performed for all outcome measures.

Results: Fifteen patients with 21 abutments (13 zirconia, 8 titanium) were examined at 13 years. The drop-out rate was 25% (patient level). The technical survival rate of the abutments was 100%. The survival rate on the restorative level (crowns) was 100%. The assessed biological outcomes (PPD, PCR, BOP, BL) and esthetic outcomes (MG, PAP) were similar.

Conclusions: Zirconia and titanium abutments supporting single implant-borne restorations rendered a high survival rate and minimal differences in terms of technical, biological, and esthetic outcomes at 13 years of follow-up.

  • Ceramic abutments
  • Complications
  • Implant abutments
  • Implant crowns
  • Survival
  • Technical
  • Titanium
  • Zirconia
  • Humans
  • Ceramics
  • Follow-Up Studies
  • Dental Implants, Single-Tooth
  • Dental Abutments
  • Dental Restoration Failure
  • Crowns
  • Zirconium
Citation (ISO format)
HUMM, Viviane Laura et al. 13-year follow-up of a randomized controlled study on zirconia and titanium abutments. In: Clinical oral implants research, 2023, vol. 34, n° 9, p. 911–919. doi: 10.1111/clr.14117
Main files (1)
Article (Published version)
ISSN of the journal0905-7161

Technical informations

Creation09/21/2023 12:37:36 PM
First validation09/25/2023 1:52:15 PM
Update time09/25/2023 1:52:15 PM
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