Temporary anchorage devices (TADs) are widely used in hyperdivergent Class II cases with retrognathic mandibles. In such cases, biomechanical considerations have been discussed in some evidence-based literature. 2D is still the mainstream for analysis and evaluation. However, when we change the perspective from 2D to 3D, treatment results are evaluated differently. Reports of three-dimensional facial analysis are increasing but still not common. In this lecture, we will also demonstrate geometric morphometry and use multivariate statistics to objectively quantify or visually change the facial appearance of orthodontic treatment by comparing treatment effects based on differences in FMA.
Learning Objectives:
After this session, attendees will be able to:
Discuss biomechanical considerations of typical hyperdivergent Class II cases with retrognathic mandibles.
Recognize that treatment results will be evaluated differently when we change the perspective from 2D to 3D.
Discuss handling 3D shape analysis of craniofacial structures in a more sophisticated way.
