In the lingual orthodontic technique, there are two paradigms regarding the type of wire used. Regardless of the material or gauge, some orthodontists choose to use the straight wire and resin and bond it to the surface of the tooth; they call it compensations. Other orthodontists prefer to bend the wire, giving it a mushroom shape. There is no specific indication for the use of each type of wire, so orthodontists use them according to their criteria. The present study establishes the bases so that it is possible to find the indications for each type of wire. A clinical trial of a lingual orthodontic patient was used. To carry out the comparative study, a straight arch was placed in his right arch and a mushroom arch in the left arch. Using 3D imaging, a high-biofidelity biomodel of the patient’s mandible was generated, with which the FEM analysis was performed, which allowed comparing the reactions of the mandibular bone and appliances with the different arches. It was found that, on the side with the straight arch, there were greater deformations, and in the mushroom arch, there were greater stresses. With this, it is possible to find which clinical cases in each type of wire are indicated.

中文翻译：

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两种正畸钢丝矫正技术的有限元比较数值分析

在舌头正畸技术中，关于所用导线的类型有两种范例。不论材料或规格如何，一些牙齿矫正医生都会选择使用直丝和树脂并将其粘结到牙齿表面。他们称其为补偿。其他牙齿矫正医生更喜欢弯曲金属丝，使其呈蘑菇状。没有针对每种类型的线材的使用的具体指示，因此，牙齿矫正医生会根据其标准使用它们。本研究建立了基础，以便有可能找到每种导线的适应症。正畸患者使用舌头正畸的临床试验。为了进行比较研究，在他的右弓上放置了一个直弓，在左弓上放置了一个蘑菇形弓。使用3D成像，生成了患者下颌骨的高生物保真度生物模型，进行有限元分析，可以比较下颌骨和矫治器对不同弓形的反应。结果发现，在具有直拱形的一侧，变形较大，而在蘑菇形拱形中，则具有较大的应力。这样，可以发现每种类型的线中都指出了哪些临床病例。