Nashwa Ali Saleh Ali, Attia Aly Elgendy, Mohamed Maamoun Elsheikh And Mohammed Abdel Khalek Sakr,

ABSTRACT
The Aim Of This Study Was To Analysis The Influence Of Abutment Angles And Implant Length On Stress Distribution Within Alveolar Bone In Anterior Region Of Maxillary Arch (esthetic Zone) By Using (3D) Finite Element Analysis.

Materials and Methods: Three Dimension Finite Element Models Were Designed Using 3D Digitizer And Implants With Similar Diameter Of 3.7mm But With Different Length 10, 13 And 16 Mm And Abutment With Different Angles As 0?, 10?and 20? Were Used In This Study . A Static 35N Vertical Force And Static 10N Horizontal Force Were Applied On The Implant. The Stress Generated Within Alveolar Bone Calculated Using Von Mises? Stress Criteria Which Represent The Distribution Of Stress Numerical And With Different Color Code.

Results: Von Mises? Equivalent Stress Value Within The Alveolar Bone Increase As Abutment Angles Increase From 0� To 20� At All Site Of Load Application Under Vertical And Horizontal Force .Increasing Fixture Length From 10 Mm To 16mm With The Use Of Straight Abutment And 10� Angled Abutment Changedthe Von Mises Equivalent Stressvalues From Increase To Decrease In All Site Of Load Application Under Vertical And Horizontal Force. With 20� Angled Abutment The Von Mises Stress Value Decrease As The Length Increase From 10mm To 16mm Within Alveolar Bone At All Site Of Load Application Under 10 N Horizontal Loads.