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Updated: Jun 18, 2026
The Establishment of a Murine Maxillary Orthodontic Model
Published on: October 27, 2023
The modified two-by-one fixed orthodontic appliance for bodily movement of canine: a case report
Vicky W K Tsui1, Hessa A Alkhal, Huie M Hou
1Faculty of Dentistry, University of Hong Kong, 2/F, 34 Hospital Road, Sai Ying Pun, Hong Kong SAR, PR China. drvickytsui@gmail.com
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.
