1. Johnston C, Burden D, Morris D. Clinical guidelines: Orthodontic retention. London: Royal College of Surgeons;2008. Revised November 2008.
2. Renkema AM, Sips ET, Bronkhorst E, Kuijpers-Jagtman AM. A survey on orthodontic retention procedures in The Netherlands. Eur J Orthod. 2009; 31:432–437.
Article
3. Littlewood SJ, Millett DT, Doubleday B, Bearn DR, Worthington HV. Retention procedures for stabilising tooth position after treatment with orthodontic braces. Cochrane Database Syst Rev. 2006; (1):CD002283.
Article
4. Keim RG, Gottlieb EL, Nelson AH, Vogels DS 3rd. 2002 JCO study of orthodontic diagnosis and treatment procedures. Part 1. Results and trends. J Clin Orthod. 2002; 36:553–568.
5. Wong PM, Freer TJ. A comprehensive survey of retention procedures in Australia and New Zealand. Aust Orthod J. 2004; 20:99–106.
6. Pratt MC, Kluemper GT, Hartsfield JK Jr, Fardo D, Nash DA. Evaluation of retention protocols among members of the American Association of Orthodontists in the United States. Am J Orthod Dentofacial Orthop. 2011; 140:520–526.
Article
7. Valiathan M, Hughes E. Results of a survey-based study to identify common retention practices in the United States. Am J Orthod Dentofacial Orthop. 2010; 137:170–177.
Article
8. Kish L. Survey sampling. New York: John Wiley and Sons;1965. p. 45–52.
9. Singh P, Grammati S, Kirschen R. Orthodontic retention patterns in the United Kingdom. J Orthod. 2009; 36:115–121.
Article
10. Meade MJ, Millett D. Retention protocols and use of vacuum-formed retainers among specialist orthodontists. J Orthod. 2013; 40:318–325.
Article
11. Vandevska-Radunovic V, Espeland L, Stenvik A. Retention: type, duration and need for common guidelines. A survey of Norwegian orthodontists. Orthodontics (Chic.). 2013; 14:e110–e117.
Article
12. Lai CS, Grossen JM, Renkema AM, Bronkhorst E, Fudalej PS, Katsaros C. Orthodontic retention procedures in Switzerland. Swiss Dent J. 2014; 124:655–661.
13. Arnold SN, Pandis N, Patcas R. Factors influencing fixed retention practices in German-speaking Switzerland: A survey. J Orofac Orthop. 2014; 75:446–458.
Article
14. Reitan K. Clinical and histologic observations on tooth movement during and after orthodontic treatment. Am J Orthod. 1967; 53:721–745.
Article
15. Edwards JG. A study of the periodontium during orthodontic rotation of teeth. Am J Orthod. 1968; 54:441–461.
Article