Case Report
The modified two-by-one fixed orthodontic appliance for bodily movement of canine: a case report
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* Corresponding author: Ricky WK Wong fyoung@hkucc.hku.hk
1 Orthodontics, Faculty of Dentistry, the University of Hong Kong, 2/F, 34 Hospital Road, Sai Ying Pun, Hong Kong SAR, PR China
2 Hamad Medical Corporation, Dental Department, P.O.Box 3050, Doha-Qatar
3 24-1 Jalan Metro Perdana 8, Taman Usahawan Kepong, 52100 Kepong, Kuala Lumpur, Malaysia
Cases Journal 2009, 2:211 doi:10.1186/1757-1626-2-211
Published: 19 November 2009Abstract
Background
Orthodontic management of an ectopically erupted canine requires substantial amount of bodily movement which is difficult to perform and often results in root resorption.
Case presentation
A 9 year old girl presented with Class I malocclusion with crowding and ectopically positioned upper left canine (23). Treatment involved extraction of all first premolars. The alignment of the upper left canine was achieved by the modified 2 by 1 appliance.
Conclusion
The design of this modified 2 by 1 appliance allows individualized bodily tooth movement of canine, it provides light and continuous force for physiological orthodontic movement with minimal root resorption.