RESUMEN
An investigation was conducted to study the relationship and the angulation of the artificial occlusal plane as related to the maxillary plane, Cook's plane, Frankfort horizontal plane and the cephalometric occlusal plane. Twenty completely edentulous patients were selected for this study. Lateral cephalometric radiograph was taken for each patient and the cephalometric films were traced. The result obtained indicated that the cephalometric occlusal plane determined by the quadrilateral analysis was the only plane which tends to be parallel with the artificial occlusal plane. The statistical analysis showed that there was no significant correlation between the artificial occlusal Cook's plane angle and the artificial occlusal-Frankfort horizontal plane angle