Photoelastic analysis of stress generated by wires when conventional and self-ligating brackets are used: A pilot study
OBJECTIVE: By means of a photoelastic model, this study analyzed the stress caused on conventional and self-ligating brackets with expanded arch wires.METHOD: Standard brackets were adhered to artificial teeth and a photoelastic model was prepared using the Interlandi 19/12 diagram as base.Successive activations were made with 0.014-in and 0.018-in