In a study by D. Fasbinder (School of Dentistry, University of Michigan) only two all-ceramic crowns had to be replaced in the course of ten years due to fracture. The survival rate of IPS e.max CAD was 93.3 %.
The aim of the study was to examine the clinical long-term performance of IPS e.max CAD crowns, which were placed in one appointment using three different cementation materials.
A self-etching luting composite (Multilink Automix, n = 23), an experimental self-adhesive cement (n = 39) and a self-adhesive composite cement (SpeedCEM) (n = 38) were used.
Two independent examiners evaluated the lithium disilicate crowns on the basis of modified USPHS criteria when they were placed.
Summary of the study Only two crowns had to be replaced due to fracture. The IPS e.max CAD crowns performed exceptionally well over a clinical observation period of up to ten years.
Summary of the clinical data IPS e.max has been scientifically monitored since its inception. The study results of notable experts from around the world have contributed to the compilation of an excellent data base. The average survival rate for both the lithium disilicate and the zirconium oxide product is 96 per cent.
Studies to consult The IPS e.max Scientific Report contains a summary of all the available in vivo and in vitro study results. Details of the study results of D. Fasbinder are also contained in this publication.