Evaluation of the Inter-Premolar Width Changes in the Mandible using Three Different Commercial Arch Wires: A Prospective Clinical Study


Objective: The aims of this study is to evaluate the inter-premolar width changes in the mandible using three different commercial orthodontic arch wires.

Subjects and methods: Thirty patients including both males and females have been allocated in this study. Three orthodontic wires including NiTi, copper NiTi, and Beta-Titanium wires had been used. A special observational technique including CBCT had been used to make an evaluation for the inter-premolar width before and after the aligning stage.

Results: The results showed a highly significant increase in post-treatment inter premolar width in CNA and NITI groups; compared to Cu NITI group; with highly significant statistical difference (p < 0.01 respectively).

Conclusion: The present study showed that there is a high significant increase in the inter-premolar width in the mandible, when comparing the wires in the groups (NiTi, CNA, and copper niti). Also, the gender of the patient does not seem to have an impact of the gender on post-treatment efficacy of each wire.

Keywords— Mandible, Commercial Arch Wires, NiTi, copper NiTi, Beta-Titanium wires.

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