title: Response to letter by dr. Santana-Penin.
authors.affiliation: Temporomandibular Disorders Clinic, Department of Maxillofacial Surgery, University of Padova, Padua, Italy.
authors.forename: Daniele
authors.initials: D
authors.lastname: Manfredini
authors.forename: Luca
authors.initials: L
authors.lastname: Guarda-Nardini
mesh_terms: D005260:Female; D006801:Humans; D008297:Male; D013706:Temporomandibular Joint Dysfunction Syndrome / Q000503:physiopathology*