... view of maxillary sinuses.• Cephalometric projections: (1) Antero Posterior (AP), (2) Latero Lateral (LL),(3) Carpus, (4) ... Sub-Mento Vertex (SMV) in AP mode.• Accessories for positioning: bite block, chin rest, optional ... view of maxillary sinuses.• Cephalometric projections: (1) Antero Posterior (AP), (2) Latero Lateral (LL),(3) Carpus, (4) ... machine/ dental x ray machine using software