Abstract: A molar (1) shows a cusp (6), which occludes in a designated central fossa (7). The cusp (6) essentially shows even facets (8,12) of which each facet (9,11) has a coordinating central fossa (7). When biting down, there are at least two coordinating facets of the cusp and the central fossa that meet. At least one set of coordinating facets of the cusp (6) and the central fossa (7) are located outside/buccal (8,9) and/or in the back/distal (24,23) and have essentially a larger-scale surface, than the facets (12,26; 11,27) located in the slope of the opposing ridge. One of the larger facets (8; 9) preferably inclines essentially to the outside and the other one essentially to the back, while the smaller facets, preferably one (12; 11) essentially raises to the inside and the other one essentially to the front. This improves the stability of the denture and provides more space for the tongue.

Abstract: A resin injector is used to fill recesses created in plaster moulds containing teeth in the interior of muffles with resin, with a simple economic mechanical device which is attached to the muffle and is operated by a conventional press. An assembly of two cylindrical part (4,8) is adjusted to a wide inlet mouth cut in the muffle. The resin which is received in this assembly is projected towards the muffle through at least one hole, which can be opened or closed at will by means of a manually operated part.