ABSTRACT

There has been a simplification of contemporary orthodontics methodology in order to decrease treatment time without neglecting functional balance and aesthetics (Buonocore 1995, Newman 1965).

Direct bonding of brackets to the enamel surface became possible after Buonocore (1955) studies. This researcher showed that enamel conditioning with phosphoric acid solution, as a mechanical union method, promoted a significantly stronger bond between enamel and restorative material surfaces (Buonocore 1995).Afterwards, Newman (1965) introduced this adhesive technique in orthodontics. Therefore, enamel conditioning promotes a more efficient mechanical bonding of brackets, contributing not only to an improvement in the settlement of orthodontic appliances but also adding numerous advantages as superior aesthetics, less discomfort, technical simplicity, greater precision in positioning brackets, better hygiene, less risk of caries and minor periodontal problems (Newman 1965).