Three‐dimensional prediction of roots position through cone‐beam computed tomography scans‐digital model superimposition: A novel method

• DOI: 10.1111/ocr.12252
• Publication Date: 2018-11-18T10:53:52Z
• Authors: Edoardo Staderini; Federica Guglielmi; Marie A. Cornelis; Paolo M. Cattaneo
• Keywords: Superimposition; Position (finance); Digital radiography

To introduce a new, fast, reliable, and free from software-related bias method to predict three-dimensionally the root position angulation during after orthodontic treatment. The final goal is keep minimum use of ionizing radiation by eliminating necessity multiple exposure for checking alignment.Pre- post-treatment digital models cone-beam computed tomographic (CBCT) scans patient were retrieved.The model (post-model) was set as reference; pre- CBCT pre-aligned post-model with point registration; iterative closest algorithm then employed adjustments. accuracy proposed assessed comparing average distance between expected setup true roots, CBCT.After crown superimposition, 3D colour maps showed that prediction below 0.1 mm.The workflow allows in an accurate truly three-dimensional way when initial available, without need extra X-ray examination at end limitation mid- X-rays accordance ALARA (As Low As Reasonably Achievable) principle it even more relevant growing patients.