L'Orthodontie Française
MENUCranio-Facial 3D Biometry: Complete analysis of a case of class II “limit surgery” Volume 91, issue 1-2, Juin 2020 - Numéro spécial 93e réunion scientifique Lille 2022 : Le diagnostic en orthodontie : actualités et perspectives
Figures
Tables
- Key words: 3D Biometry, Cephalometric medium profile in Class II, Basic Class II, Descriptive statistics, t test, r correlation coefficients, Compensating positions in Class II, Clinical case
- DOI : 10.1684/orthodfr.2020.16
- Page(s) : 115-28
- Published in: 2020
Introduction: With the conventional 2D exam of clinical cases, the diagnosis is penalized by the lack of data, not only for vertical or transverse or asymmetrical problems, but for classical cases of anteroposterior dysharmonies. In these cases, the effectively used parameter, ANB angle, seems insufficient. So the authors elaborated a 3D biometry tool. The program of morphological analysis is able to deliver a complete description of dysharmony, supported by Cone Beam data capture. Materials and Methods: In the first part of this article the authors present the foundation of the model : anatomical reference, skeletal landmarks, teeth location by inertia matrix calculus, parameters, diagnosis and aid to treatment plan. Results: The second part is the presentation, step by step, of the program in function, analyzing a great case of Class II hyperdivergent, border line surgery. All along the diagnosis way, the authors make the assistant discover all the documents given by the computer about complete 3D diagnosis and aid to treatment plan.