A retaining device for a dental workpiece includes a retaining ring for receiving the dental workpiece, and a clamping device for clamping the dental workpiece on the retaining ring. The clamping device has a bearing surface for the dental workpiece, and the bearing surface is mounted or formed on the retaining ring and protrudes radially in the direction of the central axis. At least one clamping element is mounted movably on the retaining ring, and in a clamping position, the dental workpiece can be clamped between the clamping element and the bearing surface. The retaining ring has an inner ring element, on which the bearing surface is mounted or formed and on which the clamping element is movably mounted, an outer ring element, and a fixing device for releasably fixing the inner ring element to the outer ring element.

A handheld vise for dental crowns includes a vise block, an elongated handle extending from the vise block, a linear screw embedded in the vise block, and first and second jaws. The second jaw may be arcuate on a gripping surface thereof to conform to the shape of a dental crown. The handheld vise is sized for quickly and readily securing a dental crown such as a stainless-steel dental crown for use in pediatric dentistry. An elastomeric material may be used on the gripping surfaces of the vise. A radius of curvature of the gripping surface of the second jaw may be between about 25-35 mm. A height of the jaws may be between about 2-5 mm, and a distance between the first jaw and a vertex of the second jaw may range from about 3-10 mm. A method and kit for forming crowns including the handheld vise are disclosed.

A handheld vise for dental crowns includes a vise block, an elongated handle extending from the vise block, a linear screw embedded in the vise block, and first and second jaws. The second jaw may be arcuate on a gripping surface thereof to conform to the shape of a dental crown. The handheld vise is sized for quickly and readily securing a dental crown such as a stainless-steel dental crown for use in pediatric dentistry. An elastomeric material may be used on the gripping surfaces of the vise. A radius of curvature of the gripping surface of the second jaw may be between about 25-35 mm. A height of the jaws may be between about 2-5 mm, and a distance between the first jaw and a vertex of the second jaw may range from about 3-10 mm. A method and kit for forming crowns including the handheld vise are disclosed.

A dental model gripping system can include a dental model and a dental model gripper. The dental model can include a replica set of teeth and a flat bottom surface there beneath that can include first and second vertical openings spaced apart by an opening distance. The dental model gripper can have a flat top surface and first and second pins extending vertically therethrough that can slide toward and away from each other. The first and second pins can be slid to an engaging position where they are spaced apart by the opening distance and are insertable into the vertical openings of the dental model, can be slid away from each other to a gripping position while inserted into the vertical openings, and can press against internal surfaces within the vertical openings to grip firmly the bottom surface of the dental model against the top surface of the dental model gripper.