شماره پرونده : M.96_1207

Tips and techniques in placing infrazygomatic mini screw:
For placement of bone screws in the IZC (1st and 2nd molar region) initial point of insertion is inter-dentally between
the 1st and the 2nd molar and 2 mm above the muco-gingival junction in the alveolar mucosa.The self-drilling screw is directed at 90° to the occlusal plane at this point. After the initial notch in the bone is created after couple of turns to the driver, the bone screw driver direction is changed by 55°–70° toward the tooth, downward, which aid in bypassing the roots of the teeth and directing the screw to the infra-zygomatic area of the maxilla.The bone screw is screwed in till only the head of the screw is visible outside the alveolar mucosa. No pre-drilling, raising of flap or vertical slit in the mucosa is required for insertion of IZC screws. Immediate loading is possible and a force of up to 300–350 g can be taken up by a single bone screw.