An in vitro investigation of peak insertion torque values of six commercially available mini-implants.

Dear Sir The paper in the European Journal of Orthodontics by Whang et al. (2011) investigates the torque values at which a range of selected mini-implants fracture. While it provides an overview of fracture issues, it is unfortunate that the consistency and density of the test materials are not described, there are multiple discrepancies between the torque values stated in Table 2 and parts of the text, and the diameter of the Infinitas® mini-implant version tested is incorrectly stated in the discussion …