Badr A. Abdelatif, Ahmed S. Hashem, Mostafa I Shendy And Wael M. Refai,

ABSTRACT
Objective: To Assess The Reliability Of 3D Virtual Simulation In Prediction Of Orthognathic Surgery Cases.

Materials and Methods: This Was A Prospective Study Which Conducted Over Ten Patients Were Planned To Do Orthognathic Surgeries And Already Underwent Their Presurgical Orthodontic Treatment. CBCT Scans Were Taken One Month Before Surgery And Three Months Later After The Surgery At (T0) And (T1) Respectively. Surgical Procedures Were Simulated Using Dolphin 3D Software, And The Virtual Plan Was Transferred To The Operation Room Using 3D-printed Splints. Differences Of The 3D Measurements For The Hard And Soft Tissues Between The Virtual Plan And (Actual) Postoperative Outcome Were Assessed. Data Will Be Gathered And Tabulated For Statistical Analysis.

Results: The Overall Results Were Deemed Accurate, And Differences Among 11 Of The 14 Parameters Were Considered Non-significant. Results Showed That No Significant Difference Between All Hard Tissue Predicted And Actual Measurements, Although Significant Differences Appeared In 3 Measurements Of Soft Tissue. Significant Differences Were Reported For LsLi-NsSn (p Value = 0.01), N?-Ba-Me? (p Value = 0.03) And Li-Esthetic (p Value = <0.001).

Conclusions: The Study Shows That The Software Program Used In The Study Is Reliable For 3D Planning In Hard Tissue Predictions And UN Reliable In Soft Tissue Predictions.