Objective: We have developed a non-invasive implant “i-station” that is easy to insert as miniscrew and resistant to detachment as miniplate. The implant is capable of applying any force system including intrusion, extrusion, distalization, mesialization, expansion, and contraction. We herein report two cases treated with this device.
Methods: The first case was a right first molar missing in maxilla accompanying lip protrusion with angle Class I and skeletal Class II. Treatment consisted of extracting the maxillary left first molar and performing distal movement of the anterior-premolar teeth with i-station inserted in maxilla. Both mandibular third molars were extracted and moved distally with miniplates. The second case was skeletal mandibular right deviation with 7 mm distance between the maxillary and mandibular midlines, accompanying crossbite in right molars and open bite in the anterior teeth. Molar relationships were Class I on the right and Full Class III on the left. The third molar and first premolar in the right maxilla were extracted, and intrusion and expantion of the right molars, intrusion of the left molars, and right movement of the maxillary midline were performed with i-station. In the mandible, both first premolars were extracted and the anterior teeth were distally moved with miniscrews.
Results and Conclusions: The new implant allowed simultaneous force application of intrusion, distal movement, expansion. Application of all force systems not only of the above but also extrusion, mesial movement, contraction is possible with the “i-station”, which proves effective in challenging cases requiring simultaneous application of multiple forces.