ES2217990B1 - IMPROVEMENTS INTRODUCED IN THE OBJECT OF THE MAIN PATENT N 200200087 FOR "DEVICE FOR THE SETTING OF DENTAL PROTESIS". - Google Patents

Abstract

The improvements introduced in the object of the main patent nº 200200087 by "Device for the fixation of dental prostheses" comprise a new design of the housing comprising two cylindrical zones that precede and follow the area in the form of a straight rectangular dodecagonal prism, a pillar transmucosal that has an outer surface in the form of a straight polygonal prism that fits in the area in the form of a straight dodecagonal prism of the aforementioned device for fixing dental prostheses, as well as a retaining and joining screw with a conical area in its head. This conical zone is conjugated with an inner conical zone of the aforementioned transmucosal pillar.

Description

Improvements introduced in the object of the Patent main nº 200200087 by "Device for fixing dentures".

The present invention relates to improvements made for the purpose of main Patent No. 200200087 by "Device for fixing dentures" that provides Sensitive advantages

The improvements object of the present invention they come from the industrial practice of the main patent, as well as of the tests performed, allowing to improve implantation Dental and reliability and durability of both the device under the main patent and as of the dental insertions with it made.

The main patent is characterized by consisting in a device for fixing dentures that It comprises a body with an external thread, incorporated into the bone maxillary, which typically has accommodation in its upper part in the form of a rectangular rectangular prism dodecagonal. Said type of device, usually called an implant in the sector, is completed with another element that is housed in the aforementioned implant housing and is usually called a pillar, on which the dental prosthesis is placed. Implant and abutment remain joined by a retaining screw.

The improvements of this application consist of some improvements introduced the upper area of the device which, in combination with the incorporation of a pillar and a screw of certain characteristics that are also subject of this invention, improve the functional behavior of the set, facilitating a more comfortable surgery for the specialist and safer for the patient, further improving the characteristics of behavior against multidirectional efforts derived of chewing, thus reinforcing the prosthesis implanted

More specifically, the improvements introduced include:

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a new configuration of the device object of the main patent in its upper internal zone, which presents, consecutively, a straight cylindrical surface, a prism-shaped surface rectangular rectangular dodecagonal and other cylindrical surface straight.

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a transmucosal pillar with a prism-shaped outer surface rectangular rectangular polygonal, which is embedded within the aforementioned dodecagonal rectangular rectangular prism shaped area device object of the main patent, so that both pieces combine perfectly and prevent relative rotation between yes. The aforementioned pillar also has a through hole with an area tapered to make contact with the top of a retaining screw

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a retaining screw with a conical area on top that It is complemented by the aforementioned conical area of the pillar. This type of conical head screw is also the subject of this application and also represents a novelty in the state of the technique of this sector.

Preferably, said pillar surface in the form of a polygonal straight prism will be a surface in the form of straight hexagonal prism.

The cone on the top of the screw retention adjusts and avoids the pressure of lateral forces on the whole implanted dental prosthesis.

The conical area of the retaining screw performs the aforementioned function of preventing damage to the prosthesis due to lateral forces in a more efficient way than the conical area present at the entrance of the device object of the Patent principal, in such a way that it is possible to dispense, in embodiments preferred, of the latter, replacing the former cited cylindrical surface that precedes the surface in the form of straight rectangular dodecagonal prism.

For better compression, it is attached as explanatory but not limiting example some drawings of a preferred embodiment of the present invention.

Figure 1 shows a perspective view, partially sectioned, of the disassembled components of a device according to the present improvements;

Figure 2 is a plan view of a pillar of agreement with the present improvements;

Figure 3 is a sectioned front view of the pillar of figure 2;

Figure 4 shows a front view in section of an implant in accordance with the present improvements;

Figure 5 shows a plan view of the implant of figure 4.

Figure 6 is a sectional view of a one dental prosthesis, implanted in a patient, according to the present improvements;

Figure 7 is a sectional view according to the cutting plane VII-VII indicated in figure 6.

The present improvements on the device or implant (1) object of said main patent, comprise a transmucosal abutment (2) and a retaining screw (3), as well as a modified design of the inside surface of the device aforementioned.

As seen in figure 1, the implant (1) It has an external threaded surface (4) for implantation in the maxillary bone (100), and an internal housing with a threaded area internally (5), conjugated with the threaded surface (6) of the retaining screw (3). Characteristically for this invention, the housing has an internal surface in shape of rectangular rectangular prism dodecagonal (8). According to present improvements, this area in the form of a rectangular straight prism Dodecagonal is both preceded and followed by two zones in the form of a straight cylinder (13) and (14).

In accordance with the present improvements, in this surface (8) perfectly fits the area in the form of a straight prism polygonal (9) that has the pillar (2) in the area of union with the implant (1). In the particular case of the embodiment shown in the Figure 8, said surface (9) is in the form of a straight prism hexagonal.

Thanks to the combination of both surfaces (8) and (9), rotation between implant (1) and abutment (2) is avoided, contributing in this way to avoid possible loosening of the retaining screw (3).

In an innovative way for this type of dental insertions, the present improvements also consist of a retaining screw (3) that has a top conical zone (10).

The pillar (2) also has a suitable area to make a seat with the pillar (11) and a through hole with a conical zone (7) intended to make contact with the cone (10) of the retaining screw (3).

Thanks to this combination between both zones conical (10) and (11) the implant behavior is improved against to horizontal efforts, while hindering an eventual loosening the retaining screw (3).

In figure (6) a device can be seen in accordance with the present invention and improvements introduced, with its corresponding prosthesis, already placed in a denture. It can see how the implant (1) with its outer threaded surface (4) is incorporates the maxillary bone (100). On the implant (1), it is placed the abutment (2), and the connection is made using the screw (3), the surfaces (10) and (11) being in contact. To facilitate the threaded retaining screw (3), its head has a accommodation (12) suitable for receiving a tool.

In general, everything that does not affect, alter, change or modify the essence of the described improvements, it will be variable to effects of the present invention

Claims (2)

1. Improvements introduced in the object of the main patent nº 200200087 for "Device for the fixation of dental prostheses" characterized in that the device has a housing with an area in the form of a rectangular rectangular prism dodecagonal that is comprised between two areas, a superior and a lower one, both with a straight cylindrical shape, in which a transmucosal pillar is housed, without the possibility of turning with respect to the latter, said transmucosal pillar comprising an outer surface generally conjugated with the housing, with an area in the form of straight polygonal prism that fits within the area in the form of a rectangular rectangular prism dodecagonal of the aforementioned device, presenting the transmucosal abutment, in addition, a through hole where a retaining and joining screw of the device and the abutment are housed, said screw presenting an area conical in its upper part conjugated with a conical area of the through hole of the transmucosal pillar. 2. Improvements introduced in the object of the main patent nº 200200087 for "Device for fixing dental prostheses", according to the preceding claim, characterized in that said surface of the abutment in the form of a polygonal straight prism is a surface in the form of a straight prism hexagonal.