Mohamed Ibrahem Mohamed And Hamed Mohamed Gad,

ABSTRACT


Introduction: Orthognathic Surgery Is The Art And Science Of Diagnosis, Treatment Planning And Execution Of Treatment By Combining Orthodontic And Oral &maxillofacial Surgery To Correct Musclo-skeletal Dento-osseous And Soft Tissue Deformities Of The Jaws And Associated Structures.To Achieve This Goal Different Techniques May Be Used According To The Treatment Plan Previously Prepared By The Orthognathic Team Work Like Le-forte I Osteotomy In Maxillary Correction & Bilateral Sagittal Split Osteotomy (BSSO) For Mandibular Correction. These Osteotomies Can Be Performed With Different Methods Like Lindman Bur , Surgical Saw Or Pezoelectric Device.Surgical Saw Is The Most Common And Widely Used Tool For Maxillary Osteotomy As It Has High Cutting Efficiencyand Continuous Clean Cut But It May Harm Soft Tissue And High Heat Generation Production Cause Marginal Bone Necrosis Which Affect Bone Healing. We Are Going To Evaluate A New Technique For Osteotomy Aiming More Valuable And Safety Measures In The Piezoelectric DeviceMethodology 10 Patients Were Recruted For Maxillary Orthognathic Surgery While Osteotomy Is Performed With Piezo In Right Maxilla And Saw Is Used For The Left Side. The Blood Loss For Each Osteotomy Side Was Calculated Separately And Compared.Results Saw Technique Showed Significantincrease In Blood Loss By 66.6% As Compared To Piezo Technique. Conclusion: The Use Of Piezoelectric Device In Maxillary Osteotomy Is More Safe Than Surgical Saw Cause Less Blood Loss As It Is Less Traumatic To Soft Tissue And Other Vital Structures .