Buccolingual single torque spring

Marden Bastos

INTRODUCTION: Correction of unitary tooth inclination is frequent in orthodontics and can be solved by individual torque on rectangular wires or by buccolingual individual torque springs, also known as Goodman springs, patented by Alan J. Sosnay, among other ways. The individual torque in rectangular wires satisfactorily solves the problem, but requires training, being difficult to quantify the torsion, as well as to insert the wire into the bracket of the tooth requiring correction, in addition to the high load/deflection rate, requiring care in its use. In the case of esthetic brackets, fracture at the time of wire insertion is common, delaying the consultation and often contraindicating the use of individual torque on rectangular wires. In these cases, the buccolingual single torque spring is an efficient alternative. These springs can be made by the orthodontist or purchased preformed from various commercial brands. OBJECTIVE: This article reports the fabrication and installation of the buccolingual single torque spring as well as the installation of the aforementioned prefabricated spring, and partially presents two clinical cases that demonstrate the efficiency of the spring. CONCLUSION: The buccolingual single torque spring is an effective aid for the correction of unitary tooth inclination in cases of difficulty in making individual torque and in esthetic brackets, which can be prefabricated or made by the orthodontist, and must be adapted for cervical for positive torque, and for occlusal for negative torque, respecting the direction of the helicoids, for greater efficiency.

Keywords: Orthodontic appliances, fixed. Torque.

How to cite: Bastos M. Buccolingual single torque spring. Clin Orthod. 2022 Fev-Mar;21(1):32-40.

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