Factors associated with orthodontic brackets debonding

Vol. 13 – Number 51 – 2020 Original article Page 75-81 Factors associated with orthodontic brackets debonding Alexandre Henrique de Melo Simplício1 Ananda Souza Pereira2 Mayana Monteiro de Carvalho3 Priscila Ferreira Torres4 Marcoeli Silva de Moura5 Abstract Introduction: Orthodontic brackets debonding is common in clinical practice. The knowledge of the factors associated to bracket debonding is relevant for greater clinical effectiveness in tooth movement. Objective: This study aimed to evaluate the occurrence of brackets debonding and associated factors in patients who completed orthodontic treatment. Material and Methods: The records of 205 orthodontic patients from a private clinic treated by a single operator between 2000 and 2013 were analysed, the same type of bracket and adhesive system were used for the bonding. For univariate analysis, tables of frequency and average of central tendency and dispersion were used. In the bivariate analysis were used double-entry tables and Chi-square test or Fisher’s exact test. Results: There was no bonding failure of brackets in 45.9% of the patients during the entire orthodontic treatment. Of the 54.1% patients with bonding failure, 46.3% occurred in one to five brackets. There was an association between debonding and treatment time. The tooth with the highest bracket debonding frequency was the lower premolar (44.7%). Conclusions: Orthodontic brackets bonding failure occurred in 54.1% of patients throughout the orthodontic treatment and was associated with treatment time. Descriptors: Orthodontics, dental debonding, orthodontic appliances. 1 Associate Professor IV of the Department of Pathology and Dental Clinic – UFPI, Coordinator of the Specialization Course in Orthodontics – UFPI. 2 Master in Dentistry – Graduate Program in Dentistry – UFPI. 3 Specialist in Orthodontics – UFPI. 4 Specialist in Orthodontics – UFPI, Master in Dentistry – Graduate Program in Dentistry – UFPI. 5 Full Professor, Department of Pathology and Dental Clinic – UFPI.