Abstract
Objectives
This study aims to evaluate the 4-year clinical performance of tooth versus implant-supported single-unit zirconia crowns (LAVA™) placed on posterior region.
Materials and methods
Twenty-four patients (10 men and 14 women) who had received 48 single crowns (24 implant-supported and 24 tooth-supported) from January 2007 to December 2009, were included. California Dental Association (CDA) quality assessment system, plaque and gingival index scores were used to evaluate the performance of the crowns at baseline and at all follow-up examinations.
Results
During the follow-up period, no fracture of zirconia coping has occurred. Major complication was chipping in three patients that required a new crown fabrication. Except for the failure ones, all crowns in both groups were rated as satisfactory at the follow-up examinations based on the CDA quality assessment criteria. There were no statistically significant differences between tooth and implant-supported crowns in terms of periodontal parameters.
Conclusions
The present 4-year follow-up clinical study demonstrates that single-unit tooth- and implant-supported zirconia crowns have similar prosthetic and periodontal outcomes.
Clinical relevance
Single-unit implant or tooth-supported zirconia crowns may be considered acceptable treatment modalities for restoration of either missing or compromised posterior teeth
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Mustafa Barış Güncü declares that he has no conflict of interest. Umut Cakan declares that he has no conflict of interest. Guliz Aktas declares that she has no conflict of interest. Güliz Nigar Güncü declares that she has no conflict of interest. Şenay Canay declares that she has no conflict of interest.
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Funding information is not available.
Ethical approval
The study protocol was approved by the Committee on Research Ethics of Hacettepe University (GO 14/72-19).
Informed consent
Informed consent was obtained from all participants prior to treatment.
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Güncü, M.B., Cakan, U., Aktas, G. et al. Comparison of implant versus tooth-supported zirconia-based single crowns in a split-mouth design: a 4-year clinical follow-up study. Clin Oral Invest 20, 2467–2473 (2016). https://doi.org/10.1007/s00784-016-1763-x
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DOI: https://doi.org/10.1007/s00784-016-1763-x