Hossam Hassan Soliman Hassan, Amal Hessein Mubarak, Fatema El Zahraa Awad Sayed, Ahmed Mohamed Osama And Sherihan Mohamed Eissa Ali,

ABSTRACT
Background: Fracture Strength And Hardness Could Be Found To Be Sensitive To The Curing Techniques Of The Polymerized Resins; The Hardness Is An Efficient Technique To Judge The Polymerisation Depth Of Resin Materials.

Aim: Compare The Effect Of Curing Techniques On The Fracture Resistance Of Implant Retained Acrylic Resin Overdenture Bases. Method: Acrylic Resin Denture Bases Had Been Divided Into Three Groups According To The Technique Of Polymerization (group I: Heat Cured Acrylic Resin, Group II: Microwave Cured Acrylic Resin, Group III: Light Cured Acrylic Resin). Universal Testing Machine Had Been Used To Measure Fracture Strength And Vicker`s Hardness Tester Had Been Used To Measure Vicker�s Hardness.

Results: Light Cured (Eclipse) Denture Base Resin Revealed Significantly Higher Fracture Strength And Hardness Properties, As Compared To The Water Bath And Microwave Polymerization Methods. Conventional Heat Cured Resin Demonstrated Significantly Higher Fracture Strength And Hardness Properties, As Compared To Microwave Polymerized Resin. Conclusion: High Strengths Exhibited By Eclipse Is Also Concerning The High Degree Of Polymerization And Crystalline Nature Of The Formulation Moreover As Less Voids Among The Material