Orthodontic attachments and chlorhexidine-containing varnish effects on gingival health.

OBJECTIVE To compare the severity of clinical inflammation parameters and the level of the inflammatory mediator interleukin (IL)-1beta during orthodontic treatment by using brackets and bands. In addition, the effect of a chlorhexidine-containing varnish was investigated. MATERIALS AND METHODS This prospective randomized controlled trial included 40 healthy children who required an orthodontic treatment of mild crowding. Either brackets or bands were randomly allocated to the premolars with a split-mouth design. Twenty of the children received a chlorhexidine-containing varnish during the treatment (0, 12, 24 weeks), while the remaining children served as a control group. Prior and until 24 weeks after the insertion, data were recorded regarding the pocket depth (PD), the gingival appearance (gingival index [GI]), and the plaque accumulation (plaque index [PI]). Gingival crevicular fluid was collected as well. A quantitative enzyme-linked immunoassay technique was used to detect differences in IL-1beta. RESULTS The PDs and the gingival index of teeth with brackets showed significantly lower values in comparison with teeth treated with bands (P = .0001). The IL-1beta levels confirmed these findings. In contrast, the PI showed higher values for the teeth with brackets (P = .0001). The teeth that received a chlorhexidine-containing varnish showed significantly lower values in the follow-ups for most of the evaluated parameters (PD Band, PI Band, PI Bracket, GI Band, GI Bracket; P < .015). CONCLUSION The clinically observed parameters as well as the IL-1beta levels reflected the higher impact of bands on gingival health. These values showed a significant decrease after application of a chlorhexidine-containing varnish. However, the PI showed higher values for the teeth with brackets.

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