Five-year clinical prospective evaluation of zirconia-based Denzir 3-unit FPDs
2008 (English)In: International Journal of Prosthodontics, ISSN 0893-2174, E-ISSN 1139-9791, Vol. 21, no 3, 223-227 p.Article in journal (Refereed) PublishedText
Purpose: The aim of this prospective study was to evaluate the clinical performance of fully sintered hot isostatic pressed yttria-partially-stabilized zirconia (Denzir) 3-unit fixed partial dentures (FPDs).
Materials and Methods: Nineteen 3-unit FPDs were placed in 18 patients. Ten FPDs were placed in the maxilla and 9 in the mandible. Two calibrated examiners evaluated the FPDs independently 1 week (baseline), 1 year, 3 years, and 5 years after placement using the California Dental Association quality evaluation system.
Results: All FPDs were intact at the 5-year examination. One FPD lost retention after 12 months but remained intact; it was recemented and is still in function after 5 years. All FPDs were rated satisfactory over 5 years. No changes were seen in terms of color and anatomic form. The number of slightly rough or pitted occlusal surfaces increased approximately 30% over 5 years. Visible evidence of ditching along the margin increased over time, but only for those FPDs luted with zinc phosphate cement.
Conclusion: The 5-year results indicate that yttria-partially-stabilized zirconia 3-unit FPDs with anatomically designed frameworks are promising prosthetic alternatives, even in the premolar and molar regions. However, for all-ceramic FPDs with more units in function, further studies are necessary.
Place, publisher, year, edition, pages
Hanover Park: Quintessence Publishing , 2008. Vol. 21, no 3, 223-227 p.
fixed partial dentures, all-ceramic crowns, fracture-resistance, posterior FPDs, follow-up, bridges, performance, lifetime
IdentifiersURN: urn:nbn:se:umu:diva-117500ISI: 000256156000008PubMedID: 18548960OAI: oai:DiVA.org:umu-117500DiVA: diva2:908506