Soft drink consumption has steadily increased in recent decades in both western and developing countries. The trend is most apparent among children and adolescents. This rise in soft drink consumption has raised concerns among health care professionals, including dental practitioners. Accordingly, the effects of soft drinks on dental health have been investigated. Several studies have shown that dental problems, such as caries, enamel erosion, and corrosion of dental materials, may be associated with soft drink consumption. Because orthodontic appliances restrict toothbrush access, patients undergoing orthodontic treatment need special oral care and advice. This article reviews the risks and implications of soft drink consumption for orthodontic patients. World J Orthod 2009;10:33–40.