Cement failure loads of 4 provisional luting agents used for the cementation of implant-supported fixed partial dentures

The major disadvantage of cement-retained implant-supported fixed partial d entures (FPDs) is difficulty in retrievability. The retentive strengths of the provisional luting agents usually employed in these cases are therefore an important consideration. This study evaluated the cement failure loads of 4 provisional luting agents used for the cementation of FPDs supported b y 2 implants or 4 implants. Nogenol luting agent exhibited the lowest reten tive values in both types of FPD. ImProv proved to be the most retentive ce ment of all rested. Temp Bond NE and Temp Bond presented significantly diff erent values (P < .05) for the 2-implant FPD, but not for the 4-implant mod el. On the basis of the study results, it may be concluded that Nogenol app ears to be more appropriate for cementation of both 2- and 4-implant-suppor ted FPDs when removal of the provisionally cemented superstructure is antic ipated.