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[Clinical study of Twin-wires on anchorage on canine retraction]
Guo-hua Wang1, Ping Liu, Yang-ming Ou
1Department of Stomatology, Shanghai Putuo Central Hospital, Shanghai, China. drwanggh@126.com
Purpose:
The purpose of the study was to evaluate the effects of anchorage by Twin-wires on canine retraction.
Methods:
A sample of 15 patients with severe anterior crowding was selected (6 males, 9 females, age average: 13.7 years). All patients underwent removal of the four first premolars during orthodontic treatment. Retraction of canine was achieved by using 0.018 stainless steel wire and NiTi wire. Anchorage reinforcement as a result of this movement was evaluated. The length and width of the dental arch models were measured. Self-control t test was used for data analysis.
Results:
The length and width of the dental arches, the canine and molar relationships remained unchanged after orthodontic treatment.
Conclusion:
Application of Twin-wires leads to canine retraction and sufficient anchorage consolidation.
