Ahmed Saad Makarem, Mahamad Mostafa Abd El Moaty And Nermin Alsayed Mahmoud,

ABSTRACT


Aim: This Study Was To Compare The Micro-tensile Bond Strength Using Two Universal Bonds.

Materials and Methods: Forty Freshly Extracted Molars Were Used, Flatpreparation Was Done Below The DEJ By 0.5mm. The Teeth Were Divided Into Two Equal Groups: Group 1 Using Tokuyama Palfiqueuniversal Bond And Group 2 Using BISCO All Bond Universal. PalfiqueSigma Quick Composite Resin Was Used For Teeth Restoration. Teeth Were Then Sectioned In A Mesio-distal And Bucco-lingual Direction Using Diamond Disc In A Cutting Machine At 200 RPM Under Copious Irrigation To Obtain Beams. Each Group Were Subdivided Into Two Equal Halves For Testing Microtensile Bond Strength After Of 24 Hours And Three Months Of Storage Period Using Universal Testing Machine.

Results: The Findings Showed No Significantdifference In The Micro-tensile Bond Strength Between The Two Tested Adhesives After 24 Hours, While There Was A Statistically Significantdifference Between ?TBS Of Specimens Prepared By The Two Tested Adhesives After 3 Months Of Water Storage With The Highest Mean Value Found In Specimens Prepared By BISCO.