Abstract
Objective: The aim of this finite element study was to assess the effect of mechanical vibration force on tooth movement, stress distribution and velocity. Methods: A 3D model was created using CBCT image of a patient with class 2 malocclusion. Three different analyses were performed on a single model where upper first premolars were extracted. At canine distalization stage; 150 gf, 150 gf and 30 Hz (0.2 N), 150 gf and 111 Hz (0.06 N) were applied to canine. The first moment effect of force and vibration were evaluated using the Algor Fempro finite element analysis program. Stress and displacement distribution were investigated comparatively. Results: It was observed that the maximum displacement occurred in the second analysis (150 gf-30 Hz), while lower displacement was seen in the third analysis (150 gf-111 Hz), and the lowest amount of displacement was in the first analysis (150 gf). While only force application caused extrusion of the tooth, linear and vibration forces together caused intrusion. In the first analysis canine rotated in the distovestibule direction, but in the second and third analysis, canine showed distopalatal rotation. Conclusion: It was concluded that in a certain range, mechanical vibration force may have accelerated tooth movement.
Highlights
IntroductionAesthetics and technology are the most important concepts in the 21st century
Speed, aesthetics and technology are the most important concepts in the 21st century
Many clinical and animal research studies have been published about accelerated tooth movement effects of vibration, there is no article has compared the biomechanical effects on tooth and surrounding tissues
Summary
Aesthetics and technology are the most important concepts in the 21st century. Nishimura et al showed that cyclical vibration force could increase RANKL value and accelerate the rate of tooth movement; with no damage on periodontal tissue in rats.[11]. Organized fibers, reduced alveolar bone volume and slowed down the movement of tooth because of cyclical vibration force application were observed in the animal study which was done by Kalajzic at al.[13]. Finite element analysis (FEA) is a useful mathematical instrument for orthodontics and it can determine the amount of stress, strain, and displacement in the dentoalveolar complex after different loading conditions of force.[20] the aim of this study was to determine the biomechanical effect of vibration force on tooth movement at canine distalization phase using. FEM analysis, and compare the stress distribution between application of force only, and combined application of force and vibration
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