title: Longevity and clinical performance of IPS-Empress ceramic restorations--a literature review.
abstract: A literature review of longevity and clinical performance of IPS-Empress restorations is presented. A MEDLINE search was conducted in fall 2000. Selection criteria were set so as to identify suitable clinical trials that were published in full and that had lasted more than 2 years. A total of 6 clinical trials on the performance of IPS-Empress inlays and onlays and a total of 3 clinical trials on the performance of IPS-Empress crowns were identified. Survival rates for IPS-Empress inlays and onlays ranged from 96% at 4.5 years to 91% at 7 years; most failures were due to bulk fracture. IPS-Empress crowns had a survival rate ranging from 92% to 99% at 3 to 3.5 years; crown failure was also mainly due to fracture. Dentists should inform their patients about these survival rates when offering such treatment. The use of IPS-Empress crowns in the posterior of the mouth is not recommended until the results of more long-term clinical trials are available.
authors.affiliation: Discipline of Restorative Dentistry, Department of Clinical Dental Sciences, Faculty of Dentistry, University of Toronto, Toronto, Ontario, Canada. oel.mowafy@utoronto.ca
authors.forename: Omar
authors.initials: O
authors.lastname: El-Mowafy
authors.forename: Jean-François
authors.initials: JF
authors.lastname: Brochu
mesh_terms: D000538:Aluminum Silicates; D001641:Bicuspid; D002986:Clinical Trials as Topic; D003442:Crowns; D003776:Dental Porcelain; D019232:Dental Restoration Failure; D006801:Humans; D007284:Inlays; D008963:Molar; D016019:Survival Analysis
chemical_list: D000538:Aluminum Silicates; C075815:IPS-Empress ceramic; D003776:Dental Porcelain