**1. Introduction**

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Malocclusions are defined by different clinical signs, dental, aesthetic, functional and skeletal parameters. Numerous local factors can interfere with the adequate maxillary and mandible growth, which it can induce to the development of dentoskeletal alterations (Migale et al., 2009).

The Orthodontic or Orthopedic treatment is the indicated option to solve these problems; placement of fixed appliances in mouth increases risk of enamel demineralization; the braces, archwires, ligatures and other orthodontic appliances complicate the use of conventional oral-hygiene measures.

It is important to identify the changes in the oral environment in patients undergoing orthodontic treatment with fixed appliances, because in some cases involving long treatment duration and the clinicians are committed to preserving the oral health of the patient.
