Abdelrahman A Abdelrahman, Ahmed M. Abd Alsamad And Nashwa Salah,

ABSTRACT


Introduction: Since Its Introduction In Dento-maxillofacial Applications, Cone Beam Computed Tomography (CBCT) Become A Very Promising Diagnostic Tool. CBCT Plays An Important Role In Not Only In Reaching A Proper Diagnosis But Also In Treatment Planning. Accuracy Of Linear Measurements Is Of Utmost Importance For Both Reaching A Diagnosis And Treatment Planning. This Study Was Conducted To Assess The Accuracy And Reliability Of Planmeca Promax 3D Mid? CBCT Machine As An Imaging Modality In Mandibular Linear Measurements Compared With Real Linear Measurement. Methods: This Study Was Performed On 30 Dry Mandibles. For Each Mandible, Three Sites Were Selected. In Each Site, Two Measurements Were Measured Using A Digital Caliper. Gutta-percha Markers Were Glued On The Marked Areas Labially/buccally And Lingually To Serve As Reference Points In The Software Measurements After CBCT Imaging. The Mandibles Were Scanned Using Planmeca ProMax 3D Mid? CBCT Machine. Measurements Were Done By Two Blinded Radiologists Independently In 2 Different Sessions. The Results Yielded Was Subjected To Intra- And Inter-observer Agreement Using Intra-Class Correlation Coefficient (ICC). Bland-Altman Plot (differences-vs-means Plot) Is Used To Test The Agreement Between Real And CBCT Measurements By Studying The Mean Difference And Constructing Limits Of Agreement.

Results: The Results Showed Excellent Agreement Between Measurements Obtained From CBCT Images Of Planameca Promax 3D Mid? Machine And Real Measurements In Both Vertical And Horizontal Direction. There Was Excellent Inter And Inter Observer Reliability. Conclusion: Mandibular Linear Measurements Driven From CBCT Images Of Planameca Promax 3D Mid? Machine Are Accurate, Reproducible And Reliable In Both The Horizontal And Vertical Directions.