ITCT980018U1 - END-BONE DCT (DOUBLE TRUNK-CONE) IMPLANT IN TITANIUM - Google Patents

Description

UTILITY MODEL DESCRIPTION

Title: DCT endo-osseous implant (double truncated cone in titanium

DESCRIPTION

The components consist of a maxillary endo-osseous implant to which it is screwed

the prosthetic abutment.

The endo-osseous implant consists of two elements:

a) an upper element or base or cylindrical neck (A) with a diameter of 4.5 mm. and height

3 mm .. Internally it has a thread for screwing the prosthetic abutment and a central point (I) of 1 mm. 3 mm in diameter and height.

b) a lower element (B) formed by a cylindrical central shaft of mm. 2.5 in diameter which supports a series (2 or 3) of bodies (C) consisting of two truncated cones with opposing base 2.5 mm high. and with a diameter of 2.5 mm. in the section

ne narrower and 4.5 mm. in the widest section (base); the machining angle.

of the trunk = cones is 45 °.

The base of the central cylindrical stem has a 1 mm groove. in height and 1 mm. wide. This space will be filled by the newly formed bone thus ensuring

functional and anti-rotational stability when screwing the prosthetic abutment to the implant.

The aforementioned bodies are placed at a distance of 0.5mm from each other.The cylindrical morphology of the base or neck avoids the concentration of occlusal functional pressures on the cervical cortical bone and also achieves primary stabilization of the

implant by means of the insertion method, in the operative phase, called Press-fit. The bodies with two truncated cones with opposing base and 45 ° convergence angles are guaranteed

at the level of the inclined planes, an optimal distribution on the bone of the occlusal functional forces both with respect to those with vertical direction (shear forces) and with respect to those with oblique or horizontal direction (torsion and compression forces). inclined (45 °) in reciprocity and parallel positions -

smo. Furthermore, said bodies determine a good retention from friction and therefore a good secondary functional stabilization is achieved.

The implant is constructed of pure titanium.

The microgeometry and roughness of the implant surfaces, after osseo-integration, enhance the adhesion and therefore the micro-retention and mechanical stabilization

endo-osseous implant.

The roughness of the axial surfaces is obtained both by additive techniques (strategic -

tification of titanium or hydroxyapatite powder (plasma spray either by subtraction techniques such as corrosion, sandblasting or with excimer laser.

After osseointegration, the prosthetic abutment is screwed onto the implant neck.

This consists of a lower element (B) with concave axial surfaces of 4.5 mm. in diameter and 3 mm. high plus a 3.5 mm threaded part. in diameter and

3 mm. in height and by an upper element (E) of truncated conical shape with a diameter of 3.5 mm. at the base and of variable height in three sizes: 4 - 5.5 - 7 mm. depending on the height of the clinical crown. The morphology with concave axial surfaces

of element D favors the direct adaptation of soft tissues and the modeling of an anatomically correct marginal gingiva and emergence profile by creating

thus the periodontal and aesthetic requirements of the neck area.

The components also consist of:

- from a healing abutment (F) morphologically equal to element D of the abutment

thesis;

- from a transfer (G) of 4.5 m. in diameter and 8 mm in height of octagonal shape; - from a laboratory analog (H) of 4.5 mm. in diameter and 13 mm. in length formed by a cylindrical sector 3 mm high. and by two truncated conical sectors 5 mm high;

- by a fixing screw of the prosthetic superstructure (L) screwed into element E. The transfer and the laboratory analog are made of copper. The healing screw F and the fixation screw of the prosthetic superstructure (L) are made of pure titanium.

Claims (1)

CLAIMS The lower element (Β) of the plant is formed by a cylindrical central stem which supports a series (two or three) of bodies (C) consisting of two truncated cones with opposed base at a convergence angle of 90 °, and machining of 45 °. Said geometric morphology achieves the following objectives: a) Given a given length and a given diameter of the implant, it amplifies the surface air at the level of the implant-bone interface, thus decreasing the specific pressure of the functional occlusal load forces per unit of surface. b) The presence of the inclined planes of the two trunk - cones with opposite base of the bodies (C) in opposite position of reciprocity and parallelism guarantees an optimal di¬ distribution of functional loads without concentration of tensions on the bone and realizes the necessary balance between the various factors making up the coupling dynamics implant-bone implantation; occlusal force exerted by the patient orthogonal component of the force applied on the inclined planes friction on the surfaces or retention, push away. This equilibrium occurs both with respect to the functional axial load forces and with respect to the angular and horizontal load forces. Furthermore, given the position with if opposed to the two truncated cones that make up the bodies (C), an optimal action. retentive and stabilizing also with respect to the extrusive forces acting on the implant. The trend of the vectors and moments of all the aforesaid forces has a centrifugal direction which achieves an optimal stabilization and secondary functional retention of the implant. The same geometric morphology with concave surface of the element (D) and of the healing screw (F) guarantees a correct modeling of the marginal gingiva and the respect the periodontal and aesthetic requirements of the emergence profile.