Self-ligating brackets: an update

Department of Orthodontics and Dentofacial Orthopedics, Priyadarshini Dental College and Hospital, Thiruvallur Taluk, Pandur 631203, Tamilnadu, India.
Journal of clinical orthodontics: JCO 04/2012; 46(4):235-41.
Source: PubMed
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Available from: Nazeer Ahmed Meeran, Sep 29, 2015
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    ABSTRACT: A number of laboratory studies have shown very low levels of archwire friction for self-ligating brackets when compared to conventional ligation methods. However, justifiable reservations have been expressed as to the in vivo relevance of these findings. This study was designed to compare treatment efficiency with conventional fully programmed brackets and Damon SL self-ligating brackets. Thirty consecutively finished cases treated by the author with Damon SL brackets were compared with 30 matched cases treated by the author with conventional brackets. Parallel studies quantified the incidence of technical problems with Damon SL brackets and with conventional ligatures and also the chairside time required for ligation/slide closure and ligature removal/slide opening with these two bracket types. The Damon SL cases required an average of four fewer months and four fewer visits to be treated to an equivalent level of occlusal regularity as measured by the PAR scores.
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    ABSTRACT: To explore whether the use of self-ligating brackets is associated with better values for periodontal indices because of the lack of elastomeric modules and concomitantly, reduced availability of retentive sites for microbial colonization and plaque accumulation. Private practice of the first author. Patients were selected using the following inclusion criteria: age range 12-17 years, fixed appliances on both arches, aligned mandibular arch, and absence of oral habits and anterior crossbites. Prospective cohort investigation. Participants were grouped for bracket type, thus 50 patients formed the conventional bracket cohort and 50 patients the self-ligating bracket cohort. Both cohorts were followed with the purpose to examine periodontal status. Average length of follow-up was 18 months. This time period was considered adequate for a proportion of study participants to experience the outcome of interest. Outcome variables were plaque index, gingival index, calculus index, and probing depth for the two bracket cohorts. No difference was found in the indices recorded between the two bracket cohorts studied. Under the conditions as applied in this study, the self-ligating brackets do not have an advantage over conventional brackets with respect to the periodontal status of the mandibular anterior teeth.
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