Text Lesson 7: After the implant insertion has been planned taking into account lengths and diameters, it is necessary to shift the drill to the desired depth in order to come as close as possible to the borders of the sinuses during drilling, but not to injure the Schneider’s membrane. The movement resolution is determined by the values in the manipulator window used to change steps. You can pop-up this window by right clicking on the movement arrows in the drill manipulator. The cutting edge of the drill is moved relative to the implant apex using the manipulator buttons or the drill-moving tool. The drill is quickly changed using the central manipulator buttons or the drill-resizing tool. When an implant of one side surface is in the bone tissue and the other in the maxillary sinus, it is necessary to trace on the axial slice whether the drill does not go a bit beyond the boundary of the bone tissue, because this is not always noticed in the cross-section view. Move the drill to the proper depth, making it to leave the zone of injury to the Schneider’s membrane. After final installation of the drilling depth, the optimal length of the drill is chosen and the inner surface of the template is checked whether the sleeve of the apical part goes beyond its boundary. Link to file high quality: www.cdi.ru/Lessons_IA/softsinuslift_big_eng.avi.zip