Prevalência das fissuras orofaciais diagnosticadas em um servi？o de referência em casos residentes no estado de Mato Grosso do Sul

introduction: the orofacial fissures are among the congenital malformations more frequent and present a clinic diversity, carring a serious sequel series that follow the porter during his life. objective: to consider the prevalence of congenital malformations fissure types, diagnosed in a reference service in mato grosso do sul, in a period from january 2003 to december 2007. method: it was done an observed retrospective transversal cut study, where the data in the handbooks of hopital de reabilita？？o de anomalias craniofaciais(hrac/usp/sp). for the prevalence calculus were used the data of born life(sinasc). results: in synthesis, occurred 271 diagnosed cases in the refferenceservice where predominated the unilateral incisive transforaminal fissures predominate for the left side and happened with more frequency in male gender and white ethnicity. the mother's media age was 25years old and education of 9 to 11 years with story of pregnancy complications and without prior for fissure. conclusion: in the present study was possible to estimate the fissure prevalence in the data from the hospital and sinasc, but future studies concerning the orofacial fissures epidemiology in mato grosso do sul and center-west region, using uniform terminology for a classification are necessary to compare and follow the prevalence secular evolution.