Hanan Mohsen Alasad, Marwa Ezzat Sabet And Hebatallah Tarek Mohamed,

ABSTRACT
Objective: The Aim Of This Study Was To Compare Stresses Induced In Different Attachment Systems For Single Implant Retained Mandibular Overdenture By Using Strain Gauge Analysis.

Materials and Methods: One Clear Acrylic Model Was Constructed Representing Completely Edentulous Lower Ridge. A Single Implant Was Placed In The Midline Region Of This Model And Four Identical Experimental Overdentures Were Constructed. The First Overdenture Was Fitted To Single Implant Through A Ball & Socket Attachment, While The Second Was Fitted To Implant Through A Locater Attachment, The Third Was Fitted To Single Implant Through A Magnet Dome Attachment And The Fourth One Was Fitted To The Implant Through A Magnet Flat Shape Attachment. Two Strain Gauges Were Installed In The Right And Left Sides Of Single Midline Implant. A Special Loading Device (universal Testing Machine) Was Used To Apply Standardized Static Vertical And Oblique Loads With A Magnitude Of 100 N At The Right First Molar Tooth On The Occlusal Surface Of Each Experimental Overdenture.

Results: Comparing The Four Design Abutments That Were Studied, The Differences Were Statistically Significant, Post Hock Test Showed Significant Difference Between Ball & Socket And Other Attachment Groups.

Conclusions: Within The Limitation Of This Study, It Could Be Concluded That: Ball And Socket Attachment Is The Most Favourable Attachment To Be Used In Case Of Single Implant Retained Mandibular Overdenture.