Alterations in plaque accumulation and gingival inflammation promoted by treatment with self-ligating and conventional orthodontic brackets

Mauricio de Almeida Cardoso, Patrícia Pinto Saraiva, Liliana Ávila Maltagliati, Fernando Kleinübing Rhoden, Carla Cristina Alvarenga Costa, David Normando, Leopoldino Capelozza Filho, Mauricio de Almeida Cardoso, Patrícia Pinto Saraiva, Liliana Ávila Maltagliati, Fernando Kleinübing Rhoden, Carla Cristina Alvarenga Costa, David Normando, Leopoldino Capelozza Filho

Abstract

Objective: The aim of the present study was to evaluate, comparatively, the periodontal response during orthodontic treatment performed with self-ligating and conventional brackets.

Methods: Sixteen Caucasian individuals of both sexes, aged between 12 and 16 years old and in permanent dentition were selected. Eight individuals were treated with conventional brackets installed on the lower dental arch and self-ligating brackets on the upper arch. Another eight individuals received self-ligating brackets in the lower arch and conventional brackets in the upper arch. The subjects received material and instructions for oral hygiene. Visible plaque index (VPI), gingival bleeding index (GBI) and clinical attachment level (CAL) were evaluated just after installation of orthodontic appliances, and 30, 60 and 180 days later. Mann-Whitney test was used to compare differences between groups (self-ligating and conventional), two-way ANOVA followed by Tukey's test was used to assess CAL at each site of each tooth. Significance level was set at 5%.

Results: No significant changes were found with regard to the assessed parameters (VPI, GBI and CAL) in either one of the systems.

Conclusion: No significant changes were found with regard to the periodontal response to orthodontic treatment for the variables assessed and between subjects receiving passive self-ligating and conventional brackets. All individuals had received oral hygiene instructions and had their periodontal conditions monitored.

Conflict of interest statement

» The authors report no commercial, proprietary or financial interest in the products or companies described in this article.

Figures

Figure 1 -. Intraoral photos of a…
Figure 1 -. Intraoral photos of a patient in Group 1 (self-ligating brackets in the upper arch and conventional brackets in the lower arch) (A) and Group 2 (conventional brackets in the upper arch and self-ligating brackets in the lower arch) (B).
Figure 2 -. Conventional brackets received metallic…
Figure 2 -. Conventional brackets received metallic ligatures used to tie the arch to the slots (A), always carefully bending them perpendicular to the leveling arch (B) in order to reduce plaque retention
Figure 3 -. Passive self-ligating brackets present…
Figure 3 -. Passive self-ligating brackets present a nickel titanium slot locking mechanism (A), even when a rectangular wire is used (B). The handling for opening and closing the clip was done with the probe #5 (C).

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