Abstract：
AIM:The main goal of this prospective clinical study was to evaluate the outcome of inlay-retained fixed dental prostheses (FDPs) made from heat-pressed lithium-disilicate glass-ceramic. METHODS:Forty-five FDPs were placed in 42 patients (21 women, mean age 36.1 years and 21 men, mean age 42.0 years). The FDPs replaced 4 premolars and 19 molars in the maxilla and 4 premolars and 18 molars in the mandible. Preparations were performed in accordance with general principles for ceramic inlay restorations. Five of the 45 FDPs were hybrid-retained restorations, i.e. one abutment tooth with an inlay retainer and one with a full crown retainer. All FDPs were pressed in one piece using lithium-disilicate ceramic (IPS e.max Press, Ivoclar Vivadent). The minimum dimensions for the proximal connector were 4mm in height and 4mm in width (16 mm(2)) with a minimum occlusal ceramic thickness of 1.5mm. The surfaces of the inlay retainer were conditioned by etching with hydrofluoric acid 5% and silane application. Standard adhesive luting techniques were performed using a dentin adhesive (Syntac Classic, Ivoclar Vivadent) and a resin composite (Variolink II, Ivoclar Vivadent). Clinical follow-up examinations were performed annually. RESULTS:The mean observation periods were 70 months (minimum 4, maximum 123 months). Twenty-seven FDPs (60%) failed during the observation period and had to be replaced. The Kaplan-Meier survival rate for inlay-retained FDPs was 57% after 5 years and 38% after 8 years, while for hybrid-retained FDPs it was 100% after 5 and 60% after 8 years. CONCLUSIONS:Inlay-retained FDPs made from lithium-disilicate ceramic present a high clinical failure rate and therefore cannot be recommended.
journal_name
J Dentjournal_title
Journal of dentistryauthors
Harder S,Wolfart S,Eschbach S,Kern Mdoi
10.1016/j.jdent.2010.07.012subject
Has Abstractpub_date
2010-11-01 00:00:00pages
875-81issue
11eissn
0300-5712issn
1879-176Xpii
S0300-5712(10)00194-6journal_volume
38pub_type
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journal_title：Journal of dentistry
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更新日期：2012-03-01 00:00:00
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更新日期：2007-07-01 00:00:00
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更新日期：2011-07-01 00:00:00
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journal_title：Journal of dentistry
pub_type： 杂志文章
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更新日期：2004-11-01 00:00:00
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更新日期：2016-04-01 00:00:00
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journal_title：Journal of dentistry
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更新日期：2017-10-01 00:00:00
