الفهرس 
INTRODUCTIONOnly 14 pages are availabe for public view
 |  | from | 110 |  |  |
| | | from | 110 | | |
Abstract
One of tt serious defects of soft lining materials is their poor adhesion to d cidaure base. So, in this study we tried to find the effect of different curing methods on the bond strength of heat cured acrylic resin and heat cured acylic soft liner.
Sixty specimens were prepared, thirty for shear test, and thirty for tensile test. Each of them were subdivided equally into three groups according to different curing methods, microwave oven, conventional curing bath and domestic P.C. Half of the specimens were stored in distilled water for 2 days and the remainder for 30 days.
The force required for failure by separation of soft liner was measured using Lloyd universal testing machine at cross heat speed 22 mm/mm.
Results and conclusion:
The result of this investigation found that the highest bonding strength was obtained when using domestic P.C. either after storage for 2 days or after 30 days storage in distilled water.
While the bond strength of soft lining material cured by conventinoal curing bath and microwave oven was less than that cured by domestic P.C. also there was a reduction of this bond strength after 30 days storage in distilled water.
The microwave group showed the least value of bond strength.
There was no significant difference between the bond strength of the mirowave group and conventioial group after 2 days storage while there was significant difference between them after 30 days storage.