An Indirect Torque Loss Evaluation in Ceramic Brackets

Torque is essential in establishing the correct buccolingual positioning of the tooth, inter-arch relationship, proper esthetic smile line and anterior guidance [3-5]. However, some factors may influence torque expression, such as, the amount of force applied, the size and slot geometry, arch wire dimensions, like, the height, width and the edge bevel [1,5-16]. Thus, leading to a lack of contact between the wire and the bracket slot resulting in a loss, which is called “torque loss” or “torque play” [1,2,4,8,13,15-17].

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