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Simulated canine retraction with different sizes of stainless steel archwires (An in-vitro study) | ||
| Journal of baghdad college of dentistry | ||
| Article 1, Volume 24, Issue 1, 2012, Pages 146-150 | ||
| Author | ||
| Yassir A. Yassir | ||
| Abstract | ||
| Background: This study aimed to assess five different sizes of archwires regarding canine retraction and distopalatal rotation in an invitro model. Materials and method: A total of 50 acrylic canine teeth were fabricated as a replica to a natural tooth, to which 0.022×0.030 inch slot standard edgewise brackets were bonded. They were ligated to straight .018 inch, 0.016×0.022 inch, 0.017×0.022 inch, 0.018×0.022 inch, and 0.019×0.025 inch stainless steel archwires using loose steel ligature wire. The teeth were moved through softened wax (at 50°C) along the archwires using NiTi closed coil springs then the amount of tooth movement, and the degree of rotation were measured. Results: The descriptive statistics showed that the maximum distance of canine retraction and rotation was with 0.018 inch wire, while the minimum was with 0.019×0.025 archwire. For canine retraction only a non-significant differences between 0.016×0.022 and 0.017×0.022 archwires and between 0.018×0.022 and 0.019×0.025 archwires were found, while for canine rotation the non-significant differences were between 0.017×0.022 and 0.018×0.022 archwires and between 0.018×0.022 and 0.019×0.025 archwires as detected by ANOVA test and post hoc Scheffe test. Pearson correlation coefficient test revealed non-significant correlation between the distance moved by the canine and its degree of rotation. Conclusion: The greatest amount of canine retraction and rotation achieved with 0.018 inch stainless steel archwire, while the opposite occurred with 0.019×0.025 inch wire. 0.017×0.022 inch archwire combined properties acceptable both regarding canine retraction and rotation. | ||
| Keywords | ||
| Archwire; brackets; stainless steel; tooth movement | ||
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