Roller Bracket allows the friction reduction compared to the conventional bracket
a finite element analysis
DOI:
https://doi.org/10.35699/Palavras-chave:
orthodontic brackets, orthodontic friction, orthodontics, dental technology , tooth movement techniquesResumo
Aim: This study aimed to present the Roller Bracket, an invention for reducing the friction between the archwire and the bracket slot floor/edges.
Methods: The Roller Bracket considers the incorporation of sliding spheres on the intermediate bracket base. The geometry was determined and analyzed by constructing a three-dimensional computer-aided design (CAD) model using SolidWorks software. The morphology of the models was based on conventional brackets and archwires available on the market. Then, the created structure was discretized in finite elements using an Abaqus software. The elements were defined by coordinates in space (nodes) and in interconnected form functions. In these models, linear triangular (CPS3) and square linear (CPS4R) elements were used. A convergence analysis allowed defining the ideal mesh.
Results: When the Roller Bracket test was performed considering the presence of a lubrication by the saliva or by a solid material, the frictional force reached a value of 1.3 g, which represents a reduction of 41% in relation to the Roller Bracket without lubrication and 48% in relation to the conventional bracket.
Conclusion: The present study demonstrated that the design of the Roller Bracket adds several advantages over the state of the art and may lead to more satisfactory results in orthodontic treatments considering the reduction of friction during the sliding mechanics.
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