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Zirconia abutments for single-tooth implant restorations: a 10-to 11-year follow-up study

Journal article
Authors A. Ekfeldt
B. Furst
Gunnar E Carlsson
Published in Clinical Oral Implants Research
Volume 28
Issue 10
Pages 1303-1308
ISSN 0905-7161
Publication year 2017
Published at Institute of Odontology, Section 2
Pages 1303-1308
Language en
Links dx.doi.org/10.1111/clr.12975
Keywords (patient assessed) aesthetics, complications, long-term study, oral hygiene, patient satisfaction, peri-, controlled clinical-trial, all-ceramic crowns, posterior regions, peri-implantitis, edentulous jaw, titanium, performance, reconstructions, metaanalysis, anterior, Dentistry, Oral Surgery & Medicine, Engineering
Subject categories Dentistry

Abstract

ObjectivesTo evaluate the clinical outcome of custom-made zirconia abutments for implant-supported single-tooth restorations 10-11years after insertion. Material and methodsThe study comprises a clinical examination of 23 patients with 30 restorations placed 10-11years ago. Oral surgeons placed the implants. The prosthodontic treatment was provided at a prosthodontic specialist clinic. The restoration was either an all-ceramic crown for cementation or a screw-retained one-piece restoration with the veneering porcelain baked directly to the zirconia abutment. Besides the clinical and radiographic examination at the 10- to 11-year follow-up, the patients' records were scrutinized regarding clinical and radiographic data from insertion of the restoration up to the last visit at the clinic. ResultsThe zirconia abutments performed well. Both technical and biological complications were rare; most patients were in general extremely satisfied with the restorations. No all-ceramic crowns fractured during the observation period. One implant was lost after 51/2years in service. There were no significant differences for changes in any of the soft tissue registrations or the peri-implant marginal bone level between the conventional two-piece abutment-crown restoration and the one-piece restoration. The peri-implant bone level changes from placement to the clinical examination 10-11years later were small (mean 0.26mm, SD 0.6mm). ConclusionsZirconia abutments for single-implant crowns demonstrated excellent technical and biological results over 10-11years of function, and most patients were extremely satisfied with the aesthetics and the function of their single-implant restorations.

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