Yasmine A. Mortada Abd Elgelel, Nagwa M. Khattab And Amro M. Moness,
ABSTRACT
Aim: The Current Study Was Conducted To Evaluate The Effect Of Different Mechanical And Chemical Surface Preparation On Shear Bond Strength Of Composite Resin To Stainless Stain Crowns.
Materials and Methods: Sixty Stainless Steel Crowns Were Divided Into Two Main Groups: GI: Kids Crowns And GII: 3M Crowns. The Two Main Groups Were Divided Into Three Subgroups: Subgroup A (no Surface Treatment), Subgroup B (roughened By Diamond Bur) And Subgroup C (sandblasting With 50� AL2O3). The Three Subgroups Then Were Divided Into Two Subgroups According To Primer Application: Subgroup 1 (no Primer) And Subgroup 2 (primer). For All Groups And Sub Groups Shear Bond Strength Was Measured And Mode Of Failure Was Recorded.
Results: Sandblasting Surface Preparation Had Significant Higher SBS Than Roughening By Diamond Bur And No Surface Treatment, Primer Application Showed A Significant SBS Than No Primer And 3M Crowns Were Significant Higher Than Kids Crown.
Conclusion: Surface Treatment Of Stainless Steel Crowns And Primer Application Increase Bond Strength To Composite Resin.
