Does the bracket composition material influence initial biofilm formation?

Context: Orthodontic treatment has been reported to contribute to the development and accumulation of dental biofilm, which is commonly found on bracket and adjacent surfaces.

Aims: The aim of this work is to test the hypothesis if there are differences in dental biofilm formation on the surface of orthodontic brackets according to the type of composition material.

Subjects And Methods: Three bracket types (metallic, composite, and ceramic) had been evaluated.

In vitro analysis of shear bond strength and adhesive remnant index comparing light curing and self-curing composites.

Objective: To evaluate, in vitro, the shear bond strength of self-curing (ConciseTM - 3M and Alpha Plast - DFL) and light-curing composites (TransbondTM XT - 3M and Natural Ortho - DFL) used in orthodontics bonding, associated to Morelli metal brackets, with further analysis of adhesive remnant index (ARI) and enamel condition in scanning electron microscopy (SEM).

Methods: Forty human premolars, just extracted and stored in physiologic solution 0.9 % were used.

Evaluation of ionic degradation and slot corrosion of metallic brackets by the action of different dentifrices.

Objective: To evaluate the in vitro ionic degradation and slot base corrosion of metallic brackets subjected to brushing with dentifrices, through analysis of chemical composition by Energy Dispersive Spectroscopy (EDS) and qualitative analysis by Scanning Electron Microscopy (SEM).

Methods: Thirty eight brackets were selected and randomly divided into four experimental groups (n = 7). Two groups (n = 5) worked as positive and negative controls.