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.