PURPOSE:the aim of this study is to determine the intrinsic factors affecting the production of the voice of teachers in basic primary.METHODS:conducted an investigation of quantitative approach, correlational non experimental design of cross-section type. Applied an instrument consisting of a questionnaire for self-registration, and the other filled out by the evaluator to 90 teachers belonging to the public school network. The statistical analysis was performed using SPSS software.RESULTS:it was observed that intrinsic factor that influences the vocal production is laryngitis. Other agents are recognized as associated factors, i.e., by if alone do not cause vocal disorders.CONCLUSIONS:teachers are a population of difficult access and little interested in their vocal health. This study allowed identifying cofactors in the pathogenesis of vocal disorders and establishes priority intervention thereof, i.e. the approach should be aimed at the Elimination of triggers and the associated mitigation.