الفهرس 
AcknowledgementOnly 14 pages are availabe for public view
 |  | from | 114 |  |  |
| | | from | 114 | | |
Abstract
This investigation was carried out to study the fluoride release property of three high viscous glass-ionomer restorative materials at six time intervals which left to set without ultrasound application or subjected either to 20s or 40s of ultrasound application (UA) during setting.
Materials and Methods: A total of 90 specimens were prepared from three different glass-ionomer restorative materials (GIRMs) (30 specimens each): Ketac-Molar Aplicap, Fuji IX GP Fast and ChemFil Rock. Specimens of each group were further subdivided into three subgroups, 10 specimens each, according to the time of ultrasound application during setting. One acting as a control subgroup (not subjected to ultrasound application) and the other two were subjected to either 20s or 40s of ultrasound application representing U2 and U3 subgroups, respectively. All specimens were planned to be tested for fluoride release property and the same specimen is re-evaluated at the proposed storage periods. T1- T6 represents different time intervals at which specimens were measured corresponding to 1, 2, 3, 7, 14 and 28 days, respectively.