RESUMEN Introduccion: El sindrome de dolor y disfuncion temporomandibular (SDDTM) se ha identificado como una de las principales causas de dolor no dental en la region orofacial. Objetivo: Describir la prevalencia del SDDTM y factores asociados en los estudiantes de la Facultad de Odontologia de la Universidad Cooperativa de Colombia (UCC), sede Envigado. Materiales y metodos: estudio observacional, descriptivo y transversal. Se evaluaron 98 estudiantes seleccionados aleatoriamente. Se realizo una encuesta, examen clinico, indice de Helkimo, test emocional de ansiedad y angustia. Se realizo un analisis univariado y bivariado (Chi2, p-0,05). Resultados: El 66% fueron mujeres. La edad promedio fue 21 anos (DE±3). El 26,5% presento habito de apretamiento dental, 26,5% onicofagia y 18,4% bruxismo. El 31,6% refirio ruido articular, 30,6% cefalea-dolor de cuello, 18,4% dolor en articulacion temporomandibular (ATM) y 12,2% rigidez mandibular. Clinicamente 44,5% presento masticacion unilateral. El 62,2% desviacion durante la apertura y al cierre el 81,6%. El 42,9% presento trastorno de ansiedad y en menor proporcion trastornos de angustia. El 74,7% presento SDDTM leve. No se encontro diferencia con significacion estadistica entre la prevalencia del SDDTM por sexo (Chi2, p=0,255), ni asociacion con los trastornos de ansiedad (Chi2, p=0,060), ni angustia. Conclusion: El SDDTM leve fue el mas frecuente entre la poblacion estudiantil, se identificaron habitos de apretamiento, onicofagia y masticacion unilateral. No se encontro diferencia por sexo, ni asociacion con trastorno de ansiedad ni de angustia. Llama la atencion la alta prevalencia de masticacion unilateral y del trastorno de ansiedad, son importantes estudiar. Palabras clave: Sindrome de dolor y disfuncion temporomandibular, factores de riesgo e indice de Helkimo. SUMMARY Background: Temporomandibular joint dysfunction and pain syndrome (TMJD) has been identified as one of the principle causes of non-dental pain in the orofacial region. Objective: To describe the prevalence of TMJD and associated factors in the students of the faculty of odontology of the University Cooperativa de Colombia (UCC), Envigado campus Materials and methods: Observational, descriptive and cross-sectional study. 98 randomly selected students were evaluated. A survey, clinical examination, Helkimo index, emotional distress and anxiety test was performed. Univariate and bivariate analysis was performed (Chi2, p-0,05). Results: 66% were women. The average age was 21 years (SD±3). 26,5% had dental clenching habit, 26,5% and 18,4% onicofagia bruxism. 31,6% reported joint click, 30,6% headache or neck pain, 18,4% pain in the temporomandibular joint (TMJ) and 12,2% mandibular stiffness. Clinically, 44,5% presented unilateral chewing. 62,2% showed deviation on opening and 81,6% on closing. 42,9% had anxiety disorder and to a lesser extent panic disorder. 74,7% had mild TMJD. No difference was found with statistical significance between the prevalence of sex TMJD. (Chi2, p=0,255) or any association with anxiety disorders (Chi2, p =0,060), and distress. Conclusions: Mild TMJD was most frequent among the student population. Clenching habits, nail biting and unilateral chewing were identified. No difference was found by gender or any association with anxiety disorder or anxiety. Particularly striking is the high prevalence of unilateral chewing and anxiety disorder, which are important to study. Key words: Temporomandibular joint dysfunction and pain syndrome, risk factors and helkimo index.