Ahmed Mohamed Zahran , Amr Hosny El Khadem And Mohamed Atef Abdel Rassoul,

ABSTRACT
Background: Implants In Dentistry Has Shown A Dramatic Increase In Recent Years As They Introduce A Successful Treatment Modality For Restoring Edentulism. As They Have Revealed High Survival Rates. Causes For Tooth Loss May Contain But Are Not Restricted To; Fractures, Periodontal Disease, Endodontic And Periapical Lesions. Teeth That May Have A Questionable Prognosis Such As Teeth Demanding Root Amputations, Hemi Sections Or Progressive Periodontal Techniques Should Be Considered Before Extraction, And The Patient Should Choose His Option, Whether To Preserve The Tooth Or Extract It. Aim; Evaluation Of The Volumetric Changes Of Oral Soft Tissue And Amount Of Crestal Bone Loss In Immediate Implant Placement In Mandibular Molars By Using Sealing Socket Abutment To Seal Close The Socket Versus Using Collagen Sponge. Methods: Patients Were Randomly Divided Into 2 Groups; The (Group A) (study Group) Received Sealing Socket Abutment While (Group B) (control Group) Received Collagen Sponge. Clinical Assessment; Patients Were Called For Follow-up 1-week Post-operative And Weekly For The Firstmonth, Then Monthly For Six Months, And Were Assessed For Healing And Implant Threads Exposures. Radiographic Assessment; Immediate Post-operative CBCT Was Ordered For All Patient To Act As Base Line For Radiographic Analysis. After 6 Months All Patients Were Recalled To Obtain CBCT To Assess Amount Of Bone Resorption Around Implant.

Results: The Mean Width Reduction Of Group A Is 0.68? 0.25 Compared To 1.59?0.51 In Group B. This Was Statistically Significantp<0.001; Being Higher In Group B. The Mean Bone Level Was 12.3?1.0 Mm For Group A And Was 12.4?0.8 In Group B. This Was Statistically Not Significantp=0.713. Conclusion: The Use Of Socket Sealing Abutment Showed Minimal Volumetric Width Reduction After Mandibular Molar Extraction With Ideal Implant Positioning. The Use Of Socket Sealing Abutment Showed Minimal Marginal Bone Loss With Immediate Implant. The Use Of Bone Graft In The Bony Sockets In Immediate Implant Placement As Space Fillingmaterial Showed Satisfactory Crestal Bone Level Stabilization. The Use Of Socket Sealing Abutment Showed Satisfactory Preservation Of Bone Graft Material And Enhanced Implant Success.