Mohamed Seleem Elabd, Magdy Mohamed Ali, Mohamed Medhat Katia, Sherif Farouk Elgayar And Elham A. Hassan,

ABSTRACT
Objective: To Evaluates Histologically Apical Closure Of Autogenously Transplanted Immature Permanent Dog Teeth Treated With 3 Different Revascularization Protocols. Study Design: Sixty Single-rooted Maxillary Incisor Teeth From Ten Healthy Mongrel Dogs Aged 5 Months Were Randomly Divided Into 3 Experimental Groups Of 20 Teeth Each. Group I: Autotransplantation Without Regenerative Endodontic Procedures. Group II: Autotransplantation With Regenerative Endodontic Group III: Autotransplantation After Removing Pulp Tissue From The Apical Side With Regenerative Endodontic. The Animals Were Sacrificed, Histologic Sections Were Prepared And Three Groups Were Evaluated For Apical Closure.

Results: 37.9% Of Teeth Showed Histological Apical Closure, With Significant Differences Between The Three Groups (p=0.008). Group I Showed The Maximal Percentage (66.7 %) Group II The Minimum (20%). When The Experimental Groups Were Compared, There Were Significant Differences Between Groups I And II (p = 0.004), And Groups I And III (p =0.024). While With Group II And III; No Statistical Significant Difference Was Found (p=0.465). Conclusion: These Results Suggest That Autotransplantation Procedures Better Done Without Removal Of The Original Pulp Tissue Or Further Regenerative Endodontic Procedures.