A three year follow-up of posterior doxadent restorations

A new direct restorative material, a calcium aluminate cement, was introduced in the year 2000 and sold under the name Doxadent (Doxa AB, Uppsala, Sweden). The aim of this study was to evaluate Doxadent used in class I and II cavities. A total of 63 restorations were evaluated clinically, according to sligthly modified USPHS criteria, at baseline, after 6 mths, 1, 2 and 3 yrs. Four of the patients reported post-operative sensitivity. At 3 yrs, 62 restorations were evaluated. At 6 mths 9.5% non-acceptable Doxadent restorations were observed, 17.5% at 12 mths, 24.2% at 2 yrs and 21% at 3 yrs, which resulted in a cumulative failure frequency of 72.6% at the end of the 3-years for the new restorative material. Main reasons for failure were material or tooth fracture. It can be concluded that Doxadent showed a non-acceptable clinical failure rate as a posterior restorative, especially in class II cavities.