Summary: The growing success oforthodontic treatments in people of all ages have had a necessary reconsideration in oral healthactions and preventive education in patients who are using these appliances. Clinical evidencesrelate the use of fixed orthodontics with a clearly elevation in dental plaque amounts, followingwith a cascade of inflammatory and immunological responses involving all periodontal tissues.Implementation of new technologies in orthodontic appliances and oral health is an important topicthat must be included in the multidisciplinary approach of actual treatments. .Key words:Orthodontics. Fixed appliances. Dental plaque. Inflammation. Oral hygiene.