Restoring Severely Compromised Anterior Teeth with Zirconia Crowns and Feather-Edged Margin Preparations: A 3-Year Follow-up of a Prospective Clinical Trial

Schmitt, Johannes; Wichmann, Manfred; Holst, Stefan; Reich, Sven
March 2010
International Journal of Prosthodontics;2010, Vol. 23 Issue 2, p107
Academic Journal
This prospective clinical trial sought to evaluate the 3-year clinical results of anterior teeth restored with 0.3-mm-thick zirconia copings and feather-edged marginal preparations. Ten patients received 19 single-tooth restorations in the anterior maxilla to restore severely decayed teeth. After a mean observation period of 39.2 months, no material fracture occurred and all crowns had acceptable surfaces. A survival and success rate of 100% was recorded, which suggests that the clinical method may be a reliable treatment modality for restoring severely compromised anterior teeth.


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