Conclusions
The present study implemented the novel approach of 4D motion capture using videostereophotogrammetry in orthodontic research. Within the limitations of this clinical trial, the following conclusion can be made:Implementation of videostereophotogrammetry in orthodontic-surgical treatment is feasible and allows the evaluation of facial movements.The magnitude of the expression maximum smile increases while that of lip purse decreases.This change in facial movements following orthodontic-surgical treatment was observed independently of skeletal classes, surgical movements, or type of surgical intervention in this preliminary study.