Filho, Omar Gabriels da SilvaGraziani, Guilherme FernandesLauris, Rita de Cássia Moura CervalhoLara, Tulio Silva [UNESP]2014-05-272014-05-272008-03-01Revista Dental Press de Ortodontia e Ortopedia Facial, v. 13, n. 2, p. 124-131, 2008.1415-54191980-5500http://hdl.handle.net/11449/70333Objective: the current study aims at following up radiographically the evolution of the midpalatal suture during the expansion procedure since the opening of the suture until bone formation. Methods: the sample comprised 38 patients in the mixed dentition stage submitted to the rapid palatal expansion protocol of the Hospital for Rehabilitation of Craniofacial Anomalies. Results: it was observed an individual variation on the period of bone ossification of the midpalatal suture, which justifies the radiographic follow-up as determinant for the appliance removal. Due to long-term post-treatment stability, the expander should be removed after the new suture is completely formed. Conclusions: the findings show that it is necessary more than three months for the complete reorganization of the midpalatal suture during the passive phase of the rapid palatal expansion.124-131porDiagnostic imagingOrthodonticsRapidly maxillary expansionSutureArtigo10.1590/S1415-54192008000200014S1415-54192008000200014Acesso aberto2-s2.0-448491048152-s2.0-44849104815.pdf