BIOMECHANICS OF VERTICAL, HORIZONTAL AND ROTATIONAL TOOTH MOVEMENT IN ORTHODONTICS
Keywords:
orthodontics, tooth movement, vertical displacement, horizontal translation, rotation, biomechanics, orthodontic forcesAbstract
Orthodontic tooth movement is a biologically mediated process initiated by controlled mechanical forces applied to the dentofacial system. Depending on the direction and magnitude of applied force, teeth may undergo vertical, horizontal, or rotational displacement. Understanding the biomechanics of these movements is essential for achieving effective and stable treatment outcomes while minimizing adverse effects such as root resorption and periodontal damage. The aim of this study was to analyze the mechanical principles underlying vertical, horizontal, and rotational tooth movement and to evaluate their clinical characteristics and biomechanical requirements. A literature-based analytical review combined with clinical observations of 150 orthodontic patients was conducted. The results demonstrate that controlled force magnitude, moment-to-force ratio, and anchorage control are critical determinants of predictable movement. Vertical movement requires precise force control to avoid intrusion-related root resorption, horizontal translation demands balanced force systems, and rotational correction necessitates counter-moments to prevent relapse. The findings highlight the importance of biomechanical planning in orthodontic therapy.
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