This work is part of a bigger study on the convergence between the report of the dentist about anxiety of their patients and patientsi responses to two scales of anxiety referent to dental treatment, conducted with a sample of 132 dentists and their 913 patients in BogotAE, Colombia. We present the data from the responses of the patients to two self report measures about anxiety before dental treatment. Both the scale MDAS (Modified Dental Anxiety Scale) and the SDAI (Dental Anxiety Inventoryis shortened version), helped identify a similar distribution at different levels of severity in the sample of this study. Additionally, it was noted that the contexts that generate more anxiety which include syringes and needles (47,2%), the anticipation of a tooth extraction (34,7%) and the anticipation of the use of dental drill (25, 4%). Moreover, there were anxiety levels slightly higher in females than in males, this aspect is evident both in the outcome of the