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Temporary anchorage screws are intended to provide a fixed anchorage point for attachment of orthodontic appliances to facilitate the orthodontic movement of the teeth. It is used temporarily and is removed after orthodontic treatment has been completed.

The OBS/Biokey Anchorage Screw, consisting of stainless steel (SUS-316LVM) and titanium alloy (Ti-6Al-4V ELI), is a self-tapping screw with various sizes for applications in the orthodontic field. It is intended to serve as a fixed anchorage point for the attachment of orthodontic and pre-prosthetic appliances, in order to facilitate the orthodontic movement of teeth. The OBS/Biokey Anchorage Screw and associated accessories are supplied non-sterile and should be sterilized before use. The devices are used temporarily with the intention to be removed after orthodontic treatment. The average temporary implantation period for the anchorage screw is six months. Screws are intended for single-use only. The purpose of this submission is to implement six additional specification models: BM, AT, AY, CH, FH, and HH. The BD model was previously cleared under K152297. The intended use, materials, manufacturing process, and sterilization method of the OBS/Biokey Anchorage Screw for BD, BM, AT, AY,CH, FH, and HH are the same. The differences are the type and dimensions (diameter and length). Different kinds of OBS/Biokey Anchorage Screw are manufactured to meet market needs. The BD model is available in diameters of 1.5. 2mm and lengths of 6. 8. 10. 12. 14mm. The BM and AT models are available in diameters of 1.6, 2mm and lengths of 6, 8, 10, 12, 14mm. The AY model is available in diameter of 1.4mm and lengths of 6, 8, 10mm. The CH, FH, and HH models are available in diameters of 1.4, 1.6, 2mm and lengths of 6, 8, 10, 12, 14mm.