Objective: The aim of the study was to determine the influence of a season on bond failures of metal brackets using a modified method of direct bonding over a period of 12 months.\nMethods: The clinical study involved thirty patients, 8 men and 22 women, who had a total of 600 metal orthodontic brackets 022\" (Mini Sprint®, Forestadent, Germany) placed. Transbond XTTM (Transbond XT™ Paste and Primer, 3M, Monrovia, CA, USA) adhesive material was applied. All brackets and tubes were placed using a modified direct bonding method. Bond failures were monitored within 12 months from the initial bonding.\nResults: The results showed that out of the total number of the placed brackets, 10 (1.67%) brackets fell off. The highest number of bond failures, 3 (3%) cases, occurred if they were placed in February and March, respectively, while 4 (3.33%) cases of debonding occurred in October. In the period from May to September, as well as in January and November, there was no bond failures.\nConclusion: The results showed a difference in the number of bond failures depending on the season, where the largest number of failed brackets was in the winter period, i.e. in October and December.