Digital workflow in the simplified assembly of lingual brackets

Vol. 13 – Number 52 – 2020 Digital Dentistry in Science Notebook Page 129-135 Digital workflow in the simplified assembly of lingual brackets Silvana Allegrini Kairalla1 Cláudia Allegrini Kairalla2 Angelo Vicentini Loiola3 Ronaldo Henrique Shibuya4 Abstract Introduction: In lingual orthodontics technique the brackets are positioned on the teeth lingual surface, and for this reason it is known as a difficult technique due to the complexity of brackets positioning. During the evolution of this technique many forms of lingual appliance assembly were developed. The most used technique recommended to make an orthodontic set-up model and later to transfer the appliance to the patient’s mouth using trays or jigs in order to perform the bonding itself. Subsequently, another and more simplified lingual appliance form emerged, in which the bonding would be performed directly, that is, on the lingual surface of the enamel, but it required greater skill from the professional. Also, it could be done on the cast model of malocclusion, without making the set-up model. Objectives: To facilitate the technique using technological resources with as a scanner and a software replacing some analogical steps in the assembly of the lingual device. Material and Method: Intraoral digitizing is performed by a scanner where the models are obtained in STL files, that inserted in the software together with the STL files of the lingual brackets will be positioned on the virtual surface of the digital models. A virtual transfer tray will be made of resin in a 3D printer where the metal brackets will be inserted for the actual bonding. Conclusion: The assembly of the simplified lingual device can be performed with excellence by digital means in almost all steps. Descriptors: Orthodontics, aesthetics, dental technology. 1 Head and Neck Otorhinolaryngology – UNIFESP. 2 Dentistry – USP. 3 Orthodontics – EAP-APCD. 4 Orthodontics – Sphere Odonto.