Comparison of infrazygomatic crest bone screw position using a postero-anterior cephalogram versus cone-beam computed tomography: a cross sectional study

Abstract Background The position of infrazygomatic crest bone screws is an important consideration in determining the success orthodontic treatment. aim this study was to compare (IZC) relation skeletal and dental parameters using postero-anterior (PA) cephalograms cone beam computed tomography (CBCT). Methods A CBCT scan a PA cephalogram were taken 19 patients (8 males; 11 females) after IZC screw placement. Each image reconstructed oriented CS 3D software (Carestream Dental LLC, Atlanta, USA) subsequently analysed. landmarks traced on cephalogram. angulation measured with respect three two compared between imaging modalities. paired t -test applied means different variables scan. Results results showed no statistically significant difference modalities four landmarks, i.e., inter-jugale plane, mid sagittal zygomatic arch perpendicular long axis 1st molar but small seen measurements from facial surface ( P ≤ 0.05). Conclusion are consistent may be used as substitute for reduce radiation exposure patients.