Mohamed A. Bassyouni, Ahmed El Barbary And Amr Zahran,

ABSTRACT
Objective: To Compare The Amount Of Periimplant Defect Reduction (VDD And HDD) And Buccolingual Dimension Reduction With And Without The Placement Of Beta Tricalcium Phosphate Into The Buccal Periimplant Defect Following Implant Installation Into Fresh Extraction Socket. Materials And Methods:16 Implants Were Placed Into 16 Patients, 8 Implants In The Test Group (grafted) And 8 Implants In The Control Group (non-grafted). Buccolingual Dimension Was Measured On The Preoperative CBCT, While The Horizontal And The Vertical Defect Dimension Were Measured Clinically Using A UNC Periodontal Probe Following Immediate Implant Placement. After 6 Months Of Healing, A Second CBCT Was Taken For The Evaluation Buccolingual Dimension Reduction And The Implants Were Exposed Using ��M�� Flap Technique For Direct Bone Measurements. In The Test Group, The Defects Were Completely Filled While In The Control Sites, There Was Variability In The Amount Of Bone Fill. Results : Regarding The Change In The Buccolingual Dimension, Results Showed That There Was Statistically Significant Difference Between Groups. The Reduction In The Vertical (VDD) And Horizontal (HDD) Defect Dimension Was Statistically Significant In Each Group Between The Baseline And The Re-entry After 6 Months And Between Groups After 6 Months. Conclusion: Although The Placement Of Biosorb (?-TCP) In The Buccal Peri-implant Defect Did Not Counteract The Bone Dimensional Alteration After Tooth Extraction And Immediate Implant Installation, It Contributed To Decreasing The Magnitude Of Buccolingual Dimension Reduction. Both Treatment Approaches Produced Significant Reduction In The Vertical As Well As The Horizontal Periimplant Defect Dimension. However, The Placement Of The Bone Graft Into The Buccal Peri-implant Defect Produced Better Bone Fill Compared To Spontaneous Healing Of The Defect.