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KMID : 1023820150070040329
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The Journal of Advanced Prosthodontics
2015 Volume.7 No. 4 p.329 ~ p.337
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Clinical outcome of double crown-retained implant overdentures with zirconia primary crowns
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Sven Rinke
Ralf Buergers
Dirk Ziebolz
Matthias Roediger
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Abstract
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PURPOSE : This retrospective study aims at the evaluation of implant-supported overdentures (IODs) supported by ceramo-galvanic double crowns (CGDCs: zirconia primary crowns + galvano-formed secondary crown).
MATERIALS AND METHODS : In a private practice, 14 patients were restored with 18 IODs (mandible: 11, maxilla: 7) retained by CGDCs on 4 - 8 implants and annually evaluated for technical and/or biological failures/complications.
RESULTS : One of the 86 inserted implants failed during the healing period (cumulative survival rate (CSR) implants: 98.8%). During the prosthetic functional period (mean: 5.9 ± 2.2 years), 1 implant demonstrated an abutment fracture (CSR-abutments: 98.2%), and one case of peri-implantitis was detected. All IODs remained in function (CSR-denture: 100%). A total of 15 technical complications required interventions to maintain function (technical complication rate: 0.178 treatments/patients/year).
CONCLUSION : Considering the small sample size, the use of CGDCs for the attachment of IODs is possible without an increased risk of technical complications. However, for a final evaluation, results from a larger cohort are required.
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KEYWORD
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Clinical trial, Telescopic crown, Overdenture, Zirconia, Survival, Success
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