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Volume 25 , Issue 5
September/October 2012

Pages 480-483

A 5-Year Retrospective Study of Cobalt-Chromium–Based Single Crowns Inserted in a Private Practice

Anders Örtorp, DDS, PhD/Aron Ascher/Per Svanborg, CDT

PMID: 22930770

The aim of this retrospective study was to evaluate the clinical performance of cobalt-chromium (Co-Cr) single crowns. Ninety restorations were placed in 55 patients, and follow-up examinations were performed annually for 5 years. Six patients (8 crowns) were regarded as dropouts. During the follow-up period, 15 (17%) crowns/abutment teeth experienced some type of complication; 8 (9%) of these were regarded as failures. The cumulative survival rate was estimated at 90.3% over 5 years, though only 3 (3%) crowns had complications that could be related to the crown material. The results suggest that Co-Cr single crowns are a promising alternative to other alloys used in fixed prosthodontics. Int J Prosthodont 2012;25:480–483.

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