Case Report

The modified two-by-one fixed orthodontic appliance for bodily movement of canine: a case report

Vicky WK Tsui¹ , Hessa A Alkhal² , Huie M Hou³ , Ricky WK Wong¹ and A Bakr M Rabie¹

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

author email corresponding author email

Cases Journal 2009, 2:211doi:10.1186/1757-1626-2-211

Published:	19 November 2009

Abstract

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.