Mini-Implant such as miniscrew and miniplate is used as a stabilizer in stable the crack occurs at the mandibular bone and maxillary bone for recovery. Reducing the screw loosening may reduce the trauma of insertion and removal that able to increase the rates of osseointegration. This paper presents the investigation of stress transfer between the interaction mini-implant and bone during applied in insertion and removal torque regards to stress distribution between mini-implant and bones. The finite element simulation involves three different materials mini-implant such as Titanium Alloy, (TiA), Stainless Steel, (SS) and Magnesium Alloy, (MgA). The result identified that the best material of mini-implant used to insert at mandibular bone is Titanium, (TiA) with the moment of 90 Nmm to perform high 0.70 STP value and average SEDTP of 2.60 compared to other materials. Whereas, for the material of mini-implant used to inserted at maxillary bone is Magnesium Alloy, (MgA) with the moment of 100 Nmm to perform high 1.11 STP value and average SEDTP of 1.20.
