1. Department of Stomatology, Prosthodontics & Orofacial Pain Section, School of Dentistry, University of Granada, 18071 Granada, Spain
2. Department of Surgery and Medical-Surgical Specialties, Orthodontics Section, Faculty of Medicine, University of Oviedo, 33003 Oviedo, Spain
3. Department of Computational Science and Artificial Intelligence, School of Computer and Telecommunications Engineering, University of Granada, 18071 Granada, Spain