The occlusion morphology of the lower posterior teeth stands in relation to the condyle path so that the inclination of the cusp measures 30° for protrusion and 20° for laterotrusion. The inclination of the occlusional plane (Spee,  Wilson) can be arranged individually and reliably with the Bonartic® II NFC+. It is the most important stabilizing element for every prosthetic restoration. The teeth were optimized in terms of a natural tooth to the two-tooth relationship. The anatomical-ly designed cusp incline allows the perfect interplay between the incisal and grinding effects.