Maxillary first premolar inclination in 8- to 11-year-old children: An observational cross-sectional study on panoramic radiographs. - Alessandri-Bonetti G; Incerti-Parenti S; Garulli G; Gatto MR; Visconti L; Paganelli C (American journal of orthodontics and dentofacial orthopedics : official publication of the American Association of Orthodontists, its constituent societies, and the American Board of Orthodontics, 2016)