Finite Attachments Show Superior Torque Control Over Vertical OMAT: Study
A new systematic review published in the Orthodontie Française journal by Nogueira and colleagues has reported that finite attachments (FAs) appear to offer superior torque and rotation control compared to vertical orthodontic mini-anchorage techniques (OMAT).
The review assessed available clinical and experimental studies comparing both systems and found that while OMAT can provide reliable anchorage, its effectiveness varies depending on design, patient factors, and force application. In contrast, finite attachments demonstrated more predictable results in controlling tooth movement, although the evidence remains limited due to the small number of high-quality studies available.
According to the authors, the mechanical advantage of finite attachments lies in their ability to distribute orthodontic forces more evenly and allow for finer adjustments in torque, which is essential in achieving precise tooth alignment. Vertical OMAT systems, though commonly used, often present challenges such as variable insertion angles and reduced control over the direction of applied forces. The review emphasized that these differences in biomechanics could influence long-term stability and treatment outcomes, particularly in complex orthodontic cases requiring precise rotational control. The researchers concluded that while current evidence suggests finite attachments provide better control over torque and rotation, further randomized controlled trials are necessary to establish standardized protocols and confirm these advantages. They also noted that treatment success depends on several factors including clinician expertise, patient compliance, and individual anatomical variations. The findings encourage orthodontists to consider finite attachments as a viable alternative to vertical OMAT, especially in cases where high precision is needed.
Keywords: finite attachments, orthodontic mini-anchorage techniques, torque control, rotation, orthodontic biomechanics, Orthodontie Française
Reference: Nogueira, A. M., Silva, R. T., & Dupont, J. (2025). Finite attachments versus vertical orthodontic mini-anchorage techniques: A systematic review of torque and rotation control. Orthodontie Française, 96(2), 115–124. https://doi.org/10.1016/j.orthfr.2025.02.006
