Abstract: A game has a plurality of value pieces and playing pieces of different colors for different players, a surface having a boundary formed as a circle or a square and two lines inside and outside of the boundary so that players are positioned on the second line and throw the playing pieces to strike outwardly of the boundary, and structural elements placeable on the surface and each having a flexible elongated part to form the boundary formed as the circle or the square, the first line, and the second line, and each of the structural elements is provided with engaging formations introduceable into the surface to retain them.

Abstract: The invention is a dental articulator with an extended range of motion of the maxilla relative to the mandible The articulator includes a base and a mandibular assembly extending horizontally from that base. A mandibular plate is provided with a supporting structure, which is aligned with corresponding cavities in the mandibular base cast for easy removal and attachment. A base is further equipped with a vertical post slidingly positioned on a vertical shaft of that base. A maxillary assembly is retained on that post via a ball-and-socket arrangement and further via a horizontal shaft positioned in two semi-opened sockets and retained by a spring-biased pin. The maxillary assembly contains a plate supporting a removable base cast in a manner similar to that of the mandibular assembly. The articulator saves time and allows for easy positioning of the maxilla and mandible.

Abstract: The invention is a supporting structure for a dental model in a dental articulator. The supporting structure includes an articulator plate and a base of the dental model. The base of the dental is provided with at least one cavity extending internally into the base from its bottom surface. The shape of the cavity is determined by the mold forming the base. In one embodiment, the cavity has straight walls. In another embodiment, the cavity is barrel-shaped. The articulator plate is provided with an alignment structure, which may include a pair of straight-walled projections, for use in combination with the straight-walled cavity, or a pair of curved springs, for use in combination with barrel-shaped cavity. The articulator plate is secured to the base by inserting and retaining the alignment structure inside the provided cavities. The articulator plate is provided with a shaft for attaching the dental model to a dental articulator.

Abstract: The invention is a supporting structure for a dental model in a dental articulator. The supporting structure includes an articulator plate and a base of the dental model. The base of the dental is provided with at least one cavity extending internally into the base from its bottom surface. The shape of the cavity is determined by the mold forming the base. In one embodiment, the cavity has straight walls. In another embodiment, the cavity is barrel-shaped. The articulator plate is provided with an alignment structure, which may include a pair of straight-walled projections, for use in combination with the straight-walled cavity, or a pair of curved springs, for use in combination with barrel-shaped cavity. The articulator plate is secured to the base by inserting and retaining the alignment structure inside the provided cavities. The articulator plate is provided with a shaft for attaching the dental model to a dental articulator.

Abstract: The invention is a dental articulator with an extended range of motion of the maxilla relative to the mandible. The articulator includes a base and a mandibular assembly extending horizontally from that base. A mandibular plate is provided with a supporting structure, which is aligned with corresponding cavities in the mandibular base cast for easy removal and attachment. A base is further equipped with a vertical post slidingly positioned on a vertical shaft of that base. A maxillary assembly is retained on that post via a ball-and-socket arrangement and further via a horizontal shaft positioned in two semi-opened sockets and retained by a spring-biased pin. The maxillary assembly contains a plate supporting a removable base cast in a manner similar to that of the mandibular assembly. The articulator saves time and allows for easy positioning of the maxilla and mandible.