Muhammad Hamdy, Tarek I. Elfaramawi And Niveen Askar,

ABSTRACT
Objective: The Aim Of This Present Study Was To Evaluate The Relation Between Primary Implant Stability Of Delayed Implant Placement And Bone Density In Posterior Mandibular Area. Patients And Methods: 16 Implants Were Placed For 9 Patients (6 Females And 3 Males) That Had At Least A Missing One Mandibular Posterior Tooth. Bone Density Of Each Implant Site Was Measured Preoperatively Through Orthopantomograph. The Implant Osteotomy Was Done According To The Manufacture�s Instruction Under Copious Irrigation After The Replacement Of The Pilot Drill With A 2.0mm Trephine Bur To Obtain A Core Biopsy With A Fixed Starting Torque Of 15Nm2. For Each Implant Primary Implant Stability Was Measured Immediately Postoperatively By Resonance Frequency Analysis.

Results: For All The 16 Implants Sites, Bone Density Was D4. All The 16 Implants Were Stable With A Mean Primary Stability Of 69.9(+- 14.5) ISQ. Conclusion: There Is No Correlation Between Primary Implant Stability And Bone Density And Drilling Torque.