Abstract: A non-removable bridge dental prosthesis includes an artificial tooth to be inserted into a region from which a tooth has been lost, a bridge tightly fixed to the rear surfaces of the teeth on either side of the region from which the tooth was lost, and a coupling member for coupling the artificial tooth to the bridge. The coupling member is integrally installed on the rear surface of the artificial tooth, and has a catching piece and a coupling projection. A coupling hole is formed in the bridge in a shape corresponding to the coupling projection and is located at a position where the coupling projection of the coupling member is formed. The coupling projection is inserted in the coupling hole of the bridge and simultaneously, the catching piece is caught on the top end of the bridge.

Abstract: Dental prosthesis to be fixed on implants (103) is arranged in a dental arch (100), completely or partially edentulous. The prosthesis (1) includes a primary structure (200) which is configured to be screwed on the implants (103) of the dental arch (100) and which has primary inserts (410, 420, 430, 440); and a secondary structure (300) which is configured to support a reproduction (104) of the teeth and of the gum of the dental arch (100) and which has secondary inserts (510, 520, 530, 540). The primary inserts (410, 420, 430, 440) and the secondary inserts (510, 520, 530, 540) are configured to work in collaboration and allow the coupling of the secondary structure (300) on the primary structure (200) through a vestibular insertion.

Abstract: The present invention relates to a dental prosthesis, and more particularly, to a screw-engagement type dental prosthesis which enables non-preparation of the natural tooth because it is manufactured by division into two pieces or three pieces, which can be simply installed, and in which the occlusal pressure can be uniformly dispersed. Also, the present invention relates to a method of casting a screw-engagement type dental prosthesis by using a bolt made of carbon or ceramics. Furthermore, a keeper and a body are engaged with each other via a bolt in a state where thin and semi-conical maintaining portions formed on inner inclination surfaces of abutment teeth of both sides with a small preparation are accurately engaged with keys formed on inner inclination surfaces of the keeper and the body in correspondence to the maintaining portions.

Abstract: Dental prosthesis to be fixed on implants (103) is arranged in a dental arch (100), completely or partially edentulous. The prosthesis (1) includes a primary structure (200) which is configured to be screwed on the implants (103) of the dental arch (100) and which has primary inserts (410, 420, 430, 440); and a secondary structure (300) which is configured to support a reproduction (104) of the teeth and of the gum of the dental arch (100) and which has secondary inserts (510, 520, 530, 540). The primary inserts (410, 420, 430, 440) and the secondary inserts (510, 520, 530, 540) are configured to work in collaboration and allow the coupling of the secondary structure (300) on the primary structure (200) through a vestibular insertion.

Abstract: The present invention relates to a dental prosthesis, and more particularly, to a screw-engagement type dental prosthesis which enables non-preparation of the natural tooth because it is manufactured by division into two pieces or three pieces, which can be simply installed, and in which the occlusal pressure can be uniformly dispersed. Also, the present invention relates to a method of casting a screw-engagement type dental prosthesis by using a bolt made of carbon or ceramics. Furthermore, a keeper and a body are engaged with each other via a bolt in a state where thin and semi-conical maintaining portions formed on inner inclination surfaces of abutment teeth of both sides with a small preparation are accurately engaged with keys formed on inner inclination surfaces of the keeper and the body in correspondence to the maintaining portions.

Abstract: Shaping cap made of ceramic, metal or plastic material, which is suitable as a solid constituent of dental pin structures.

Abstract: A module useful for forming a foundation for a dental prosthesis, the module including at least one each of (a) a post and (b) an extension unit, the post having a threaded end adapted to anchor the post into rigid dental materials such as tooth stubs or bone matrix, and a second retaining end for engaging the extension unit. The extension unit comprises an engaging end to engage the retaining end of the post, and one or two leaves extending from the engaging end transversely from the post. The engaging end is so sized and shaped as to maintain a sloppy fit with the retaining end of the post. The sloppy fit permits a minor, constrained degree of rotation of the extension unit with respect to the post. At least two such modules can be used to form the foundation for a rigid prosthetic dental bridge; at least one of the extending leaves on each module is so formed as to be capable of coupling with one of the extending leaves on a second such module.

Abstract: Device for producing quick couplings for dental prostheses, of the type which includes at least one substantially spherical male element, which is intended to be monolithically integrated with a fixed part of the prosthesis, and a female element, whose inner shape is complementary to the shape of the male element, which is correspondingly provided on a removable part of said prosthesis, includes a pair of auxiliary bars, made of a calcinable plastic material, which are connectable one on top of the other, and which cooperate so as to define at least one compartment whose shape is complementary to the outside shape of a cap which defines the female element, the bars being arrangeable about the male element in order to obtain a model of a metallic piece of the removable part of the prosthesis to be produced by lost-wax casting.