The main aim of this study was to identify periodontal problems before orthodontic treatment, determine the correct treatment plan to ameliorate these problems, and sequence the orthodontic and periodontal therapy correctly to enhance the patient's periodontal health. This article describes the responsibilities of orthodontists for diagnosing periodontal problems and discusses the interdisciplinary management of several periodontal problems requiring orthodontic intervention. The aim of this article is to review oral care products to maintain oral health during orthodontic treatment. The proper selection of hygiene products is one of the most important questions. Nowadays, the amount of hygiene products is extremely large. Annually, dental companies present new products of oral hygiene. The main tool for removing plaque is a toothbrush. Manual, electric, ultrasonic brushes allow cleaning even «hard-to-reach» tooth surfaces. Fabricant E.G. [15] found that the use of a toothbrush with the small working part (width of 10 mm and a length of 22 mm) allows achieving the highest level of oral hygiene. Key words: orthodontic and periodontal therapy, Floss