1. Equity and orthodontic treatment: a study among adolescents in Northern Ireland;Breistein;Am J Orthod Dentofacial Orthop,1998
2. Orthodontic treatment need in Peruvian young adults evaluated through dental aesthetic index;Bernabé;Angle Orthod,2006
3. Malocclusion and uptake of orthodontic treatment in Taranaki 12-13-year-olds;Foster Page;N Z Dent J,2005
4. Prevalence and factors related to malocclusion and orthodontic treatment need in children and adolescents in Italy;Nobile;Eur J Public Health,2007
5. Subjective need and orthodontic treatment experience in a middle east country providing free orthodontic services: a questionnaire survey;Kerosuo;Angle Orthod,2002