The stabilization disc (SD) is a recent innovation for orthodontic mini-implants, intended to strengthen anchorage and lower the risk of implant mobility. This device is flat with four extensions and made from biocompatible metals such as titanium or stainless steel. It provides extra mechanical support by distributing forces more evenly and reducing localized stress at the insertion site. This investigation evaluates the biomechanical properties of mini-implants equipped with an SD compared to conventional mini-implants, with a focus on their ability to maintain stability under orthodontic loads. A finite element analysis (FEA) model was constructed for a commercially available mini-implant (2.0 mm diameter, 12 mm length). The mandibular anatomy was reconstructed in 3D from CT scans using SpaceClaim 2023.1. Orthodontic forces of 10 N were applied at a 30° angle to simulate clinical conditions. The study retrospectively assessed the impact of SDs on implant displacement and stress distribution, measuring von Mises stress, cortical bone deformation, and implant micromotion under load. The inclusion of the SD reduced maximum total displacement by more than 41% and led to a more uniform distribution of von Mises stresses across both the implant and surrounding bone. Cortical bone stress and deformation decreased with the SD, indicating improved biomechanical stability. The SD enhances mini-implant performance by reducing deformation and optimizing stress dispersion without altering the implant permanently. Its adaptability to varying bone densities and high orthodontic forces makes it a promising tool for anchorage management in clinical orthodontics.
